SlideShare a Scribd company logo
1 of 38
Download to read offline
FOOD AND FEEDING HABITS OF
Labeo rohita(Ham.1822)
INTRODUCTION
• freshwater
• ponds
• lakes
• rivers and
streams.
HABITAT
• spindle-shaped
body.
• 1 metre - length
• weighs - 20 to
25kg
SHAPE,SIZE
• colour is blackish
on the dorsal side
• silvery on the
ventro-lateral
sides.
COLOUR
Kingdom : Animalia
Phylum : Chordata
Class : Actinopterygii
Order : Cypriniformes
Family : Cyprinidae
Subfamily : Labeoninae
Genus : Labeo
Species : rohita
Scientific classification
DISTRIBUTION
The rohu occurs in rivers throughout much
of northern and central and
eastern india,Bangladesh, Nepal and Myan
mar, and has been introduced into some of
the rivers of Peninsular India and Sri Lanka
omnivore
Specific food preferences at different life stages
 eats mainly zooplankton(EARLY STAGES OF LIFE CYCLE)
As it grows, eats more and more phytoplankton
 juvenile or adult is a herbivorous column feeder- eats mainly
phytoplankton and submerged vegetation
 It has modified, thin hair-like gill rakers, suggesting that it feeds
by sieving the water.
SM-2,5-spawning-mansoon
Spawn may be collected from rivers and reared in tanks and lakes
BIOLOGY
Paper-1
INTRODUCTION
The magnitude of fish population in a region is the function of food potentialities
and varies with the species, season, availability, food item preference, maturity stage
and spawning season of the fish
(Krishna et al., 2016
The qualitative and quantitative dietary analysis of fish in their natural habitats
enhances the under-standing of the growth, abundance, productivity of water body
(Nansimole et al.,
2014
OBJECTIVE
The present study was conducted to gather the information on
quality, quantity of food contents and feeding habit of rohu (L.
rohita) in large reservoir with reference to seasonal variation and
it would be helpful to prepare the management strategy and
policies for sustainable management of reservoir fishery.
MATERIALS AND
METHODS
RESULTS AND
DISCUSSION
Seasonal variation in gastrosomatic index of Labeo rohita in
Vallabhsagra reservoir
• Quantitative variation in food contends during the study was
observed and verified by the analysis of gastrosomatic index.
• It was minimum (3.932±0.2) during the breeding season and
maximum (5.378 ± 0.2) during the post breeding season whereas
annual mean of it was 4.537 ± 0.159.
• Result depict that during spawning season, feeding rate decreases
and increases immediately after spawning as the fish feeds
voraciously to compensate the energy loss during the breeding
(monsoon season).
• The seasonal changes in quality of food contents was not observed
but gut contents were dominated by phytoplankton and plant
material which indicates that fish is herbivorous
PAPER II
INTRODUCTION
Low survival rates of fish during larval stages constitute a major bottleneck in
the successful culture of many marine and some freshwater fish
Rao, 2003
A heavy larval mortality occurs especially during the time when they transit
from endogenous to exogenous mode of feeding
Labeo rohita, which accounts for 15% of the world’s freshwater aquaculture
production, reports on the feeding of rohu on natural organisms in semi-shallow
or shallow aquatic environments are few and scattered
OBJECTIVE
An attempt has been made to study the feeding habits
of Labeo rohita from ponds of Gho-Manhasa fish farm,
Jammu.
MATERIALS AND
METHODS
The categorization on the basis of sex was made to reveal the feeding
stratagem of animals under investigation right from larval stage to adult stage
and between males and females
The larger size groups however, were collected with the large drag net.
Labeo rohita were collected from the Gho-Manhasa fish farm ponds with the
help of mosquito net gently dragged along the sides of pond.
COLLECTION OF FISH SAMPLE
COLLECTION OF PLANKTON
Stereomicroscope with Reyne’s mount
Preserved in 5%of formalin
The plankton samples were collected from pond by filtering 100 litres of
surface water through silk bolting round mouth conical plankton net (50-
100μm meshsize)
Benthic sample
The preserved specimens were then brought to the wet lab measured for
their total length
The alimentary tracts were removed, weighed (nearest to 0.1grams) and
measured (nearest to 1.0 grams).
All the food items were examined using a stereomicroscope
Results and
Discussion
• A total of 420 specimens of Labeo rohita were analysed by categorizing them
into six categories based on size and sex.
• Out of total 420 specimens analysed 84 (20%)guts were found to be empty
while 336 (80%) contained food.
• Food items identified in the gut of Labeo rohita were categorized into 12 main
groups’ viz., protozoa,algae, rotifers, cladocerans, copepods, molluscs,
annelids,insects, macrophytes, unidentified matter (UM), sand/mud and detritus
• The results so obtained were used to compute percentage volume of the food
items in the gut (%V), percentage occurrence of the guts having the particular
food item (%O) and Index of Preponderance (IOP) of the food items in the gut
for L. rohita
Lrf I,II=40 guts Analyzed- Lrf III,IV=50 guts Analyzed- Lrf V,VI=120 guts
analyzed
• The low percentage of empty stomachs in Labeo rohita and high percentage of
stomach fullness recorded presently might be due to voracious feeding habit of
the fish and abundance of food in the study area.
• As a consequence of the present investigation, it was observed that early stages
of Labeo rohita feed exclusively on algae but the amount of algal intake
decreased with an increase in the size of fish.
• Corroborating the present observation, El Moghraby and El Rahman (1984)
categorized rohu as bottom feeder.
• Mookerjee and Ganguli (1949) described adults as herbivore and bottom
feeder.
• Moreover during the present observation, it was noticed that the plant matter
constitute a significant proportion with animal matter and detritus in the gut of
the fish thereby indicating herbi-omnivory mode of feeding of the Labeo
rohita.
• An increase in the feeding activity was noted in Labeo rohita (LrfV and
LrfVI) from September-December (post monsoon and early winter) with
remarkably less feeding rate from July to August (Monsoon) which
coincided with the spawning season of the species in the pond.
• Saikia et al (2013) reported Labeo rohita exhibited a greater diet breadth in
the closed area.
The RLG was found to increase with
the increase in plant matter
indicates a variation in the values Of RLG
Conclusion
• Present studies revealed L. rohita to be an omnivore-planktophage during its
early life history which subsequently showed preference for plant matter
(Herbi - omnivore)in later stages.
• The earlier research based on the gut content analysis revealed it to be a
zooplankton feeder ( Miah et al., 1984)or both a zoo and phytoplankton feeder
( Wahab et al .1994) or a periphyton feeder (NFEP 1997; Ramesh et al.1999;
Azim et al., 2001
REFERENCES
• On the food of young carp fry. J. Zoo. Soc Alikunhi, K. H. (1952. India, 4:77-84
• Studies on the fishery and biology of Tor tor (Ham.) Desai, V. R. (1970) from river
Narbada. J. Inland Fish. Soc., India.,2: 101-112
• On the fisheries of Orissa, Day, F. (1869), Pt.II, Pro. Zo-ol.Soc. Lond., pp. 372-387
• Maturation and spawning of Osteobrama bakeri- a threatened endemic
ornamental fish in Kerala, India. Euphrasia, C. J. and Kurup, B. M. (2008). Indian J.
Fish.,55(3): 273-280
• Food and feeding habits of Oreochromis mossambicus (Peters) from a subtropical
environment. Hatikakoty , G. and Biswas, S. P. (2003)J. Inland Fish. Soc. India.,
35(2):57-61
• Work Book on Limnology. Pratibha Publishers, Adoni, A. D. (1985). C-10, Gour
Nagar, Sagar. India. 216. K. H. (1957). Fish Culture in India. Alikunhi, Farm
Bulletin,20, 1-144.
• Parasitological Examinations and Food Composition in the Gut of Feral African
Carp, Labeo coubie in the Cross River,Southeastern, Nigeria. Ayotunde, E.O.,
Ochang, S.N. and Okey, I.B. (2007),African Journal of Biotechnology, 6,625-630.
• Food and feeding behavior of the golden catfish, Horabagrus brachysoma
(Gunther). Padmakumar K. G., Bindhu, L., Sreerekha, P. S. and Joseph, N.
(2009). Indian J. Fish., 56(2): 139-142
• Ecological impact of tilapia, Oreochromis mossambicus (Peters) on the
indigenous fish species in two reservoirs of Kerala. Panicker, A. C. (2000).
Ph.D. Thesis, University of Kerala, Trivandrum, India.
• A critique of the methods of study of food of fishes. Pillay, T. V. R. (1952).,J.
Zoo. Soc., India, 4: 185-200
• Food and feeding habit of Catla catla (Hamilton-Buchanan) from Daya
reservoir, Udaipur, Rajasthan. Kumar, R., Sharma, B. K. and Sharma, L. L.
(2007).,Indian J. Anim. Res., 41 (4): 266-269
• Food and feeding habits of fringe Lipped Carp, Labeo fimbriatus (Bloch) of
the Vanivilas Sagar Reservoir of Karnataka. Rajanna, K. B., Anjaneyappa H.
N., Benakappa S., Chethan N., Reddy H. R. V., Somashekar., Prabhudeva
K.N., Basavaraju Y. and Muttappa, K. (2015). Int. J. Rec. Sci. Res., 6(4)
:3431-3434
THANK U

More Related Content

What's hot

Seed production of giant freshwater prawn fisheries ppt
Seed production of giant freshwater prawn fisheries pptSeed production of giant freshwater prawn fisheries ppt
Seed production of giant freshwater prawn fisheries pptAshish sahu
 
Aquarium plant: Utility and propagation
Aquarium plant: Utility and propagationAquarium plant: Utility and propagation
Aquarium plant: Utility and propagationKartik Mondal
 
Coldwater fisheries in India
Coldwater fisheries in IndiaColdwater fisheries in India
Coldwater fisheries in IndiaVaishaliC4
 
BREEDING AND CULTURE OF CARPS FISHES
BREEDING AND CULTURE OF CARPS FISHESBREEDING AND CULTURE OF CARPS FISHES
BREEDING AND CULTURE OF CARPS FISHESAshish sahu
 
Broodstock management for carp seed production ppt
Broodstock management for carp seed production pptBroodstock management for carp seed production ppt
Broodstock management for carp seed production pptSWAGATIKA SAHOO
 
Selective breeding in fish and conservation of genetic resources for aquaculture
Selective breeding in fish and conservation of genetic resources for aquacultureSelective breeding in fish and conservation of genetic resources for aquaculture
Selective breeding in fish and conservation of genetic resources for aquacultureWorldFish
 
Biology of Prawn (Macrobrachium rosenbergii)
Biology of Prawn (Macrobrachium rosenbergii)Biology of Prawn (Macrobrachium rosenbergii)
Biology of Prawn (Macrobrachium rosenbergii)ihn FreeStyle Corp.
 
Estuarine fisheries n.a.k.
Estuarine fisheries   n.a.k.Estuarine fisheries   n.a.k.
Estuarine fisheries n.a.k.Kashmeera N.A.
 
Paddy cum- fish culture
Paddy  cum- fish culture Paddy  cum- fish culture
Paddy cum- fish culture Mohit Dhukia
 
Fish locomotion Notes
Fish locomotion NotesFish locomotion Notes
Fish locomotion Notesericchapman81
 
Fresh water prawn breeding and culture
Fresh water prawn breeding and cultureFresh water prawn breeding and culture
Fresh water prawn breeding and cultureB. BHASKAR
 

What's hot (20)

Seed production of giant freshwater prawn fisheries ppt
Seed production of giant freshwater prawn fisheries pptSeed production of giant freshwater prawn fisheries ppt
Seed production of giant freshwater prawn fisheries ppt
 
Aquarium plant: Utility and propagation
Aquarium plant: Utility and propagationAquarium plant: Utility and propagation
Aquarium plant: Utility and propagation
 
indused breeding for fish
indused breeding for fishindused breeding for fish
indused breeding for fish
 
Coldwater fisheries in India
Coldwater fisheries in IndiaColdwater fisheries in India
Coldwater fisheries in India
 
BREEDING AND CULTURE OF CARPS FISHES
BREEDING AND CULTURE OF CARPS FISHESBREEDING AND CULTURE OF CARPS FISHES
BREEDING AND CULTURE OF CARPS FISHES
 
Broodstock management for carp seed production ppt
Broodstock management for carp seed production pptBroodstock management for carp seed production ppt
Broodstock management for carp seed production ppt
 
Selective breeding in fish and conservation of genetic resources for aquaculture
Selective breeding in fish and conservation of genetic resources for aquacultureSelective breeding in fish and conservation of genetic resources for aquaculture
Selective breeding in fish and conservation of genetic resources for aquaculture
 
Biology of Prawn (Macrobrachium rosenbergii)
Biology of Prawn (Macrobrachium rosenbergii)Biology of Prawn (Macrobrachium rosenbergii)
Biology of Prawn (Macrobrachium rosenbergii)
 
Ornamental fish culture
Ornamental fish cultureOrnamental fish culture
Ornamental fish culture
 
FISHERIES SAMPLE PAPER
FISHERIES SAMPLE PAPERFISHERIES SAMPLE PAPER
FISHERIES SAMPLE PAPER
 
Life cycle of prawn
Life cycle of prawnLife cycle of prawn
Life cycle of prawn
 
Estuarine fisheries n.a.k.
Estuarine fisheries   n.a.k.Estuarine fisheries   n.a.k.
Estuarine fisheries n.a.k.
 
Feeding habit in fish
Feeding habit in fishFeeding habit in fish
Feeding habit in fish
 
Paddy cum- fish culture
Paddy  cum- fish culture Paddy  cum- fish culture
Paddy cum- fish culture
 
Fish locomotion Notes
Fish locomotion NotesFish locomotion Notes
Fish locomotion Notes
 
Fresh water prawn breeding and culture
Fresh water prawn breeding and cultureFresh water prawn breeding and culture
Fresh water prawn breeding and culture
 
Ornamental fish breeding
Ornamental fish breedingOrnamental fish breeding
Ornamental fish breeding
 
QUESTION BANK OF HANDBOOK AQUACULTURE
QUESTION BANK OF HANDBOOK AQUACULTUREQUESTION BANK OF HANDBOOK AQUACULTURE
QUESTION BANK OF HANDBOOK AQUACULTURE
 
Fresh water prawn culture
Fresh water prawn cultureFresh water prawn culture
Fresh water prawn culture
 
Present status, Constraints, future prospects and different Aquaculture pract...
Present status, Constraints, future prospects and different Aquaculture pract...Present status, Constraints, future prospects and different Aquaculture pract...
Present status, Constraints, future prospects and different Aquaculture pract...
 

Similar to food and feeding habbits of rohu

Food and feeding habit of etroplus suretencis.harshath dg
Food and feeding habit of etroplus suretencis.harshath dgFood and feeding habit of etroplus suretencis.harshath dg
Food and feeding habit of etroplus suretencis.harshath dgHarshath DG
 
food and feeding habbits of tuna
food and feeding habbits of tunafood and feeding habbits of tuna
food and feeding habbits of tunaKavitha Cingam
 
Food and Feeding habits of yellowfin tuna
Food and Feeding habits of yellowfin tunaFood and Feeding habits of yellowfin tuna
Food and Feeding habits of yellowfin tunaSalmashaik26
 
Diversity and resource characteristics of tetraodontidae fishes from Andaman ...
Diversity and resource characteristics of tetraodontidae fishes from Andaman ...Diversity and resource characteristics of tetraodontidae fishes from Andaman ...
Diversity and resource characteristics of tetraodontidae fishes from Andaman ...Journal of Research in Biology
 
Marine Plankton of the Indian Ocean
Marine Plankton of the Indian OceanMarine Plankton of the Indian Ocean
Marine Plankton of the Indian OceanAkansha Ganguly
 
Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...
Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...
Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...Alexander Decker
 
Studies the physico-chemical parameters of water, soil and the nutritional va...
Studies the physico-chemical parameters of water, soil and the nutritional va...Studies the physico-chemical parameters of water, soil and the nutritional va...
Studies the physico-chemical parameters of water, soil and the nutritional va...ijtsrd
 
Rita rita assignment
Rita rita assignmentRita rita assignment
Rita rita assignmentGulfamALi17
 
polyculture of carps
polyculture of carpspolyculture of carps
polyculture of carpsShaxid160632
 
Salient biological characteristics of some selected carps: imran nagar
Salient biological characteristics of some selected carps: imran nagarSalient biological characteristics of some selected carps: imran nagar
Salient biological characteristics of some selected carps: imran nagarihn FreeStyle Corp.
 
Biology of fin fish (labeo rohita)
Biology of fin fish (labeo rohita)Biology of fin fish (labeo rohita)
Biology of fin fish (labeo rohita)MDAbuNomanZisan
 
Common carp introduction & Morphology and its behaviour characteristics
Common carp introduction & Morphology and its behaviour characteristicsCommon carp introduction & Morphology and its behaviour characteristics
Common carp introduction & Morphology and its behaviour characteristicsArubSultan
 
32. Sliver Pomfret, economic importance.1.pdf
32. Sliver Pomfret, economic importance.1.pdf32. Sliver Pomfret, economic importance.1.pdf
32. Sliver Pomfret, economic importance.1.pdfsalehaasawer
 
Introduction to Rohu and its meristic characters
Introduction to Rohu and its meristic charactersIntroduction to Rohu and its meristic characters
Introduction to Rohu and its meristic charactershajiraali2301
 
Labeo Rohita & Buffo
Labeo Rohita & BuffoLabeo Rohita & Buffo
Labeo Rohita & BuffoBishalNath13
 
Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...
Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...
Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...SYED ASSIM HAQ
 
The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...
The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...
The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...Alexander Decker
 
Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Kerala
Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, KeralaBiodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Kerala
Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Keralapaperpublications3
 

Similar to food and feeding habbits of rohu (20)

Food and feeding habit of etroplus suretencis.harshath dg
Food and feeding habit of etroplus suretencis.harshath dgFood and feeding habit of etroplus suretencis.harshath dg
Food and feeding habit of etroplus suretencis.harshath dg
 
food and feeding habbits of tuna
food and feeding habbits of tunafood and feeding habbits of tuna
food and feeding habbits of tuna
 
Food and Feeding habits of yellowfin tuna
Food and Feeding habits of yellowfin tunaFood and Feeding habits of yellowfin tuna
Food and Feeding habits of yellowfin tuna
 
Diversity and resource characteristics of tetraodontidae fishes from Andaman ...
Diversity and resource characteristics of tetraodontidae fishes from Andaman ...Diversity and resource characteristics of tetraodontidae fishes from Andaman ...
Diversity and resource characteristics of tetraodontidae fishes from Andaman ...
 
Marine Plankton of the Indian Ocean
Marine Plankton of the Indian OceanMarine Plankton of the Indian Ocean
Marine Plankton of the Indian Ocean
 
Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...
Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...
Food and feeding habits of the brackish river prawn (macrobrachium macrobrach...
 
Studies the physico-chemical parameters of water, soil and the nutritional va...
Studies the physico-chemical parameters of water, soil and the nutritional va...Studies the physico-chemical parameters of water, soil and the nutritional va...
Studies the physico-chemical parameters of water, soil and the nutritional va...
 
Rita rita assignment
Rita rita assignmentRita rita assignment
Rita rita assignment
 
polyculture of carps
polyculture of carpspolyculture of carps
polyculture of carps
 
Salient biological characteristics of some selected carps: imran nagar
Salient biological characteristics of some selected carps: imran nagarSalient biological characteristics of some selected carps: imran nagar
Salient biological characteristics of some selected carps: imran nagar
 
Biology of fin fish (labeo rohita)
Biology of fin fish (labeo rohita)Biology of fin fish (labeo rohita)
Biology of fin fish (labeo rohita)
 
Common carp introduction & Morphology and its behaviour characteristics
Common carp introduction & Morphology and its behaviour characteristicsCommon carp introduction & Morphology and its behaviour characteristics
Common carp introduction & Morphology and its behaviour characteristics
 
32. Sliver Pomfret, economic importance.1.pdf
32. Sliver Pomfret, economic importance.1.pdf32. Sliver Pomfret, economic importance.1.pdf
32. Sliver Pomfret, economic importance.1.pdf
 
Introduction to Rohu and its meristic characters
Introduction to Rohu and its meristic charactersIntroduction to Rohu and its meristic characters
Introduction to Rohu and its meristic characters
 
Azam
AzamAzam
Azam
 
Labeo Rohita & Buffo
Labeo Rohita & BuffoLabeo Rohita & Buffo
Labeo Rohita & Buffo
 
Tilapia culture
Tilapia cultureTilapia culture
Tilapia culture
 
Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...
Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...
Trophic ecology of fishes,polyculture, fish food analysis and fish deformitie...
 
The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...
The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...
The fecundity of brackish river prawn (macrobrachium macrobrachion, herklots,...
 
Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Kerala
Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, KeralaBiodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Kerala
Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Kerala
 

More from Kavitha Cingam

CRITICALLY ENDANGERED INDIAN MEDICINAL PLANTS
CRITICALLY ENDANGERED INDIAN MEDICINAL PLANTSCRITICALLY ENDANGERED INDIAN MEDICINAL PLANTS
CRITICALLY ENDANGERED INDIAN MEDICINAL PLANTSKavitha Cingam
 
experimental research design
experimental  research designexperimental  research design
experimental research designKavitha Cingam
 
TROPHIC RELATIONSHIP IN WETLAND ECOSYSTEM
TROPHIC RELATIONSHIP IN WETLAND ECOSYSTEMTROPHIC RELATIONSHIP IN WETLAND ECOSYSTEM
TROPHIC RELATIONSHIP IN WETLAND ECOSYSTEMKavitha Cingam
 
distribution,biology,seed collection,nursery rearing and culture techniques o...
distribution,biology,seed collection,nursery rearing and culture techniques o...distribution,biology,seed collection,nursery rearing and culture techniques o...
distribution,biology,seed collection,nursery rearing and culture techniques o...Kavitha Cingam
 
survey on allopathy and ayurvedic medicines
survey on allopathy and ayurvedic medicinessurvey on allopathy and ayurvedic medicines
survey on allopathy and ayurvedic medicinesKavitha Cingam
 
Concepts of disaster managemennt
Concepts of disaster managemenntConcepts of disaster managemennt
Concepts of disaster managemenntKavitha Cingam
 
Soft shell producttion
Soft shell producttionSoft shell producttion
Soft shell producttionKavitha Cingam
 
Response of aquatic fern(Azolla), to watercontamination
Response of aquatic fern(Azolla), to watercontaminationResponse of aquatic fern(Azolla), to watercontamination
Response of aquatic fern(Azolla), to watercontaminationKavitha Cingam
 
Coastal erosion and control measures
Coastal erosion and control measuresCoastal erosion and control measures
Coastal erosion and control measuresKavitha Cingam
 

More from Kavitha Cingam (11)

Two phase sampling
Two phase samplingTwo phase sampling
Two phase sampling
 
CRITICALLY ENDANGERED INDIAN MEDICINAL PLANTS
CRITICALLY ENDANGERED INDIAN MEDICINAL PLANTSCRITICALLY ENDANGERED INDIAN MEDICINAL PLANTS
CRITICALLY ENDANGERED INDIAN MEDICINAL PLANTS
 
experimental research design
experimental  research designexperimental  research design
experimental research design
 
Seperation techniques
Seperation techniquesSeperation techniques
Seperation techniques
 
TROPHIC RELATIONSHIP IN WETLAND ECOSYSTEM
TROPHIC RELATIONSHIP IN WETLAND ECOSYSTEMTROPHIC RELATIONSHIP IN WETLAND ECOSYSTEM
TROPHIC RELATIONSHIP IN WETLAND ECOSYSTEM
 
distribution,biology,seed collection,nursery rearing and culture techniques o...
distribution,biology,seed collection,nursery rearing and culture techniques o...distribution,biology,seed collection,nursery rearing and culture techniques o...
distribution,biology,seed collection,nursery rearing and culture techniques o...
 
survey on allopathy and ayurvedic medicines
survey on allopathy and ayurvedic medicinessurvey on allopathy and ayurvedic medicines
survey on allopathy and ayurvedic medicines
 
Concepts of disaster managemennt
Concepts of disaster managemenntConcepts of disaster managemennt
Concepts of disaster managemennt
 
Soft shell producttion
Soft shell producttionSoft shell producttion
Soft shell producttion
 
Response of aquatic fern(Azolla), to watercontamination
Response of aquatic fern(Azolla), to watercontaminationResponse of aquatic fern(Azolla), to watercontamination
Response of aquatic fern(Azolla), to watercontamination
 
Coastal erosion and control measures
Coastal erosion and control measuresCoastal erosion and control measures
Coastal erosion and control measures
 

Recently uploaded

CCXG global forum, April 2024, Luca Lo Re
CCXG global forum, April 2024,  Luca Lo ReCCXG global forum, April 2024,  Luca Lo Re
CCXG global forum, April 2024, Luca Lo ReOECD Environment
 
CCXG global forum, April 2024, Alban Kitous
CCXG global forum, April 2024,  Alban KitousCCXG global forum, April 2024,  Alban Kitous
CCXG global forum, April 2024, Alban KitousOECD Environment
 
Identifying ecologically or biologically significant marine areas: a national...
Identifying ecologically or biologically significant marine areas: a national...Identifying ecologically or biologically significant marine areas: a national...
Identifying ecologically or biologically significant marine areas: a national...pensoftservices
 
Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...
Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...
Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...pensoftservices
 
Little Green Ranger ESG Sustainability Report
Little Green Ranger ESG Sustainability ReportLittle Green Ranger ESG Sustainability Report
Little Green Ranger ESG Sustainability ReportKennethOng48
 
XO2 high quality carbon offsets and Bamboo as a Climate Solution
XO2 high quality carbon offsets and Bamboo as a Climate SolutionXO2 high quality carbon offsets and Bamboo as a Climate Solution
XO2 high quality carbon offsets and Bamboo as a Climate SolutionAlexanderPlace
 
CCXG global forum, April 2024, MJ Mace
CCXG global forum, April 2024,   MJ MaceCCXG global forum, April 2024,   MJ Mace
CCXG global forum, April 2024, MJ MaceOECD Environment
 
CCXG global forum, April 2024, Annett Möhner
CCXG global forum, April 2024,  Annett MöhnerCCXG global forum, April 2024,  Annett Möhner
CCXG global forum, April 2024, Annett MöhnerOECD Environment
 
CCXG global forum, April 2024, Nino Tkhilava
CCXG global forum, April 2024,  Nino TkhilavaCCXG global forum, April 2024,  Nino Tkhilava
CCXG global forum, April 2024, Nino TkhilavaOECD Environment
 
CCXG global forum, April 2024, Adriana Bonilla
CCXG global forum, April 2024,  Adriana BonillaCCXG global forum, April 2024,  Adriana Bonilla
CCXG global forum, April 2024, Adriana BonillaOECD Environment
 
CCXG global forum, April 2024, Jo Tyndall
CCXG global forum, April 2024,  Jo TyndallCCXG global forum, April 2024,  Jo Tyndall
CCXG global forum, April 2024, Jo TyndallOECD Environment
 
CCXG global forum, April 2024, Thomas Spencer
CCXG global forum, April 2024,  Thomas SpencerCCXG global forum, April 2024,  Thomas Spencer
CCXG global forum, April 2024, Thomas SpencerOECD Environment
 
LCCXG global forum, April 2024, Lydie-Line Paroz
LCCXG global forum, April 2024,  Lydie-Line ParozLCCXG global forum, April 2024,  Lydie-Line Paroz
LCCXG global forum, April 2024, Lydie-Line ParozOECD Environment
 
CCXG global forum, April 2024, Mia Ryan
CCXG global forum, April 2024,  Mia RyanCCXG global forum, April 2024,  Mia Ryan
CCXG global forum, April 2024, Mia RyanOECD Environment
 
Planning and Designing Green buildings-.issues, options and strategies
Planning and Designing Green buildings-.issues, options and strategiesPlanning and Designing Green buildings-.issues, options and strategies
Planning and Designing Green buildings-.issues, options and strategiesJIT KUMAR GUPTA
 
CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...
CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...
CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...pensoftservices
 
Project for the production of electricity.docx
Project for the production of electricity.docxProject for the production of electricity.docx
Project for the production of electricity.docxproject .
 
The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...
The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...
The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...pensoftservices
 
CCXG global forum, April 2024, Marcia Rocha
CCXG global forum, April 2024,  Marcia RochaCCXG global forum, April 2024,  Marcia Rocha
CCXG global forum, April 2024, Marcia RochaOECD Environment
 
CCXG global forum, April 2024, Chiara Falduto
CCXG global forum, April 2024, Chiara FaldutoCCXG global forum, April 2024, Chiara Falduto
CCXG global forum, April 2024, Chiara FaldutoOECD Environment
 

Recently uploaded (20)

CCXG global forum, April 2024, Luca Lo Re
CCXG global forum, April 2024,  Luca Lo ReCCXG global forum, April 2024,  Luca Lo Re
CCXG global forum, April 2024, Luca Lo Re
 
CCXG global forum, April 2024, Alban Kitous
CCXG global forum, April 2024,  Alban KitousCCXG global forum, April 2024,  Alban Kitous
CCXG global forum, April 2024, Alban Kitous
 
Identifying ecologically or biologically significant marine areas: a national...
Identifying ecologically or biologically significant marine areas: a national...Identifying ecologically or biologically significant marine areas: a national...
Identifying ecologically or biologically significant marine areas: a national...
 
Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...
Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...
Discussing how the scientific mechanisms of the CBD work. CBD mechanisms, pro...
 
Little Green Ranger ESG Sustainability Report
Little Green Ranger ESG Sustainability ReportLittle Green Ranger ESG Sustainability Report
Little Green Ranger ESG Sustainability Report
 
XO2 high quality carbon offsets and Bamboo as a Climate Solution
XO2 high quality carbon offsets and Bamboo as a Climate SolutionXO2 high quality carbon offsets and Bamboo as a Climate Solution
XO2 high quality carbon offsets and Bamboo as a Climate Solution
 
CCXG global forum, April 2024, MJ Mace
CCXG global forum, April 2024,   MJ MaceCCXG global forum, April 2024,   MJ Mace
CCXG global forum, April 2024, MJ Mace
 
CCXG global forum, April 2024, Annett Möhner
CCXG global forum, April 2024,  Annett MöhnerCCXG global forum, April 2024,  Annett Möhner
CCXG global forum, April 2024, Annett Möhner
 
CCXG global forum, April 2024, Nino Tkhilava
CCXG global forum, April 2024,  Nino TkhilavaCCXG global forum, April 2024,  Nino Tkhilava
CCXG global forum, April 2024, Nino Tkhilava
 
CCXG global forum, April 2024, Adriana Bonilla
CCXG global forum, April 2024,  Adriana BonillaCCXG global forum, April 2024,  Adriana Bonilla
CCXG global forum, April 2024, Adriana Bonilla
 
CCXG global forum, April 2024, Jo Tyndall
CCXG global forum, April 2024,  Jo TyndallCCXG global forum, April 2024,  Jo Tyndall
CCXG global forum, April 2024, Jo Tyndall
 
CCXG global forum, April 2024, Thomas Spencer
CCXG global forum, April 2024,  Thomas SpencerCCXG global forum, April 2024,  Thomas Spencer
CCXG global forum, April 2024, Thomas Spencer
 
LCCXG global forum, April 2024, Lydie-Line Paroz
LCCXG global forum, April 2024,  Lydie-Line ParozLCCXG global forum, April 2024,  Lydie-Line Paroz
LCCXG global forum, April 2024, Lydie-Line Paroz
 
CCXG global forum, April 2024, Mia Ryan
CCXG global forum, April 2024,  Mia RyanCCXG global forum, April 2024,  Mia Ryan
CCXG global forum, April 2024, Mia Ryan
 
Planning and Designing Green buildings-.issues, options and strategies
Planning and Designing Green buildings-.issues, options and strategiesPlanning and Designing Green buildings-.issues, options and strategies
Planning and Designing Green buildings-.issues, options and strategies
 
CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...
CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...
CO-OP4CBD and its role in increasing Science – Policy Interface. Jorge Luis V...
 
Project for the production of electricity.docx
Project for the production of electricity.docxProject for the production of electricity.docx
Project for the production of electricity.docx
 
The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...
The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...
The KM-GBF monitoring framework –status & key messages. Joachim Töpper and Ha...
 
CCXG global forum, April 2024, Marcia Rocha
CCXG global forum, April 2024,  Marcia RochaCCXG global forum, April 2024,  Marcia Rocha
CCXG global forum, April 2024, Marcia Rocha
 
CCXG global forum, April 2024, Chiara Falduto
CCXG global forum, April 2024, Chiara FaldutoCCXG global forum, April 2024, Chiara Falduto
CCXG global forum, April 2024, Chiara Falduto
 

food and feeding habbits of rohu

  • 1. FOOD AND FEEDING HABITS OF Labeo rohita(Ham.1822)
  • 2. INTRODUCTION • freshwater • ponds • lakes • rivers and streams. HABITAT • spindle-shaped body. • 1 metre - length • weighs - 20 to 25kg SHAPE,SIZE • colour is blackish on the dorsal side • silvery on the ventro-lateral sides. COLOUR
  • 3. Kingdom : Animalia Phylum : Chordata Class : Actinopterygii Order : Cypriniformes Family : Cyprinidae Subfamily : Labeoninae Genus : Labeo Species : rohita Scientific classification
  • 4. DISTRIBUTION The rohu occurs in rivers throughout much of northern and central and eastern india,Bangladesh, Nepal and Myan mar, and has been introduced into some of the rivers of Peninsular India and Sri Lanka
  • 5. omnivore Specific food preferences at different life stages  eats mainly zooplankton(EARLY STAGES OF LIFE CYCLE) As it grows, eats more and more phytoplankton  juvenile or adult is a herbivorous column feeder- eats mainly phytoplankton and submerged vegetation  It has modified, thin hair-like gill rakers, suggesting that it feeds by sieving the water. SM-2,5-spawning-mansoon Spawn may be collected from rivers and reared in tanks and lakes BIOLOGY
  • 7. INTRODUCTION The magnitude of fish population in a region is the function of food potentialities and varies with the species, season, availability, food item preference, maturity stage and spawning season of the fish (Krishna et al., 2016 The qualitative and quantitative dietary analysis of fish in their natural habitats enhances the under-standing of the growth, abundance, productivity of water body (Nansimole et al., 2014
  • 8. OBJECTIVE The present study was conducted to gather the information on quality, quantity of food contents and feeding habit of rohu (L. rohita) in large reservoir with reference to seasonal variation and it would be helpful to prepare the management strategy and policies for sustainable management of reservoir fishery.
  • 10.
  • 12.
  • 13.
  • 14. Seasonal variation in gastrosomatic index of Labeo rohita in Vallabhsagra reservoir
  • 15. • Quantitative variation in food contends during the study was observed and verified by the analysis of gastrosomatic index. • It was minimum (3.932±0.2) during the breeding season and maximum (5.378 ± 0.2) during the post breeding season whereas annual mean of it was 4.537 ± 0.159. • Result depict that during spawning season, feeding rate decreases and increases immediately after spawning as the fish feeds voraciously to compensate the energy loss during the breeding (monsoon season).
  • 16. • The seasonal changes in quality of food contents was not observed but gut contents were dominated by phytoplankton and plant material which indicates that fish is herbivorous
  • 18. INTRODUCTION Low survival rates of fish during larval stages constitute a major bottleneck in the successful culture of many marine and some freshwater fish Rao, 2003 A heavy larval mortality occurs especially during the time when they transit from endogenous to exogenous mode of feeding Labeo rohita, which accounts for 15% of the world’s freshwater aquaculture production, reports on the feeding of rohu on natural organisms in semi-shallow or shallow aquatic environments are few and scattered
  • 19. OBJECTIVE An attempt has been made to study the feeding habits of Labeo rohita from ponds of Gho-Manhasa fish farm, Jammu.
  • 21. The categorization on the basis of sex was made to reveal the feeding stratagem of animals under investigation right from larval stage to adult stage and between males and females The larger size groups however, were collected with the large drag net. Labeo rohita were collected from the Gho-Manhasa fish farm ponds with the help of mosquito net gently dragged along the sides of pond. COLLECTION OF FISH SAMPLE
  • 22. COLLECTION OF PLANKTON Stereomicroscope with Reyne’s mount Preserved in 5%of formalin The plankton samples were collected from pond by filtering 100 litres of surface water through silk bolting round mouth conical plankton net (50- 100μm meshsize)
  • 24. The preserved specimens were then brought to the wet lab measured for their total length The alimentary tracts were removed, weighed (nearest to 0.1grams) and measured (nearest to 1.0 grams). All the food items were examined using a stereomicroscope
  • 26.
  • 27. • A total of 420 specimens of Labeo rohita were analysed by categorizing them into six categories based on size and sex. • Out of total 420 specimens analysed 84 (20%)guts were found to be empty while 336 (80%) contained food. • Food items identified in the gut of Labeo rohita were categorized into 12 main groups’ viz., protozoa,algae, rotifers, cladocerans, copepods, molluscs, annelids,insects, macrophytes, unidentified matter (UM), sand/mud and detritus • The results so obtained were used to compute percentage volume of the food items in the gut (%V), percentage occurrence of the guts having the particular food item (%O) and Index of Preponderance (IOP) of the food items in the gut for L. rohita
  • 28. Lrf I,II=40 guts Analyzed- Lrf III,IV=50 guts Analyzed- Lrf V,VI=120 guts analyzed
  • 29.
  • 30. • The low percentage of empty stomachs in Labeo rohita and high percentage of stomach fullness recorded presently might be due to voracious feeding habit of the fish and abundance of food in the study area. • As a consequence of the present investigation, it was observed that early stages of Labeo rohita feed exclusively on algae but the amount of algal intake decreased with an increase in the size of fish.
  • 31. • Corroborating the present observation, El Moghraby and El Rahman (1984) categorized rohu as bottom feeder. • Mookerjee and Ganguli (1949) described adults as herbivore and bottom feeder. • Moreover during the present observation, it was noticed that the plant matter constitute a significant proportion with animal matter and detritus in the gut of the fish thereby indicating herbi-omnivory mode of feeding of the Labeo rohita.
  • 32.
  • 33. • An increase in the feeding activity was noted in Labeo rohita (LrfV and LrfVI) from September-December (post monsoon and early winter) with remarkably less feeding rate from July to August (Monsoon) which coincided with the spawning season of the species in the pond. • Saikia et al (2013) reported Labeo rohita exhibited a greater diet breadth in the closed area.
  • 34. The RLG was found to increase with the increase in plant matter indicates a variation in the values Of RLG
  • 35. Conclusion • Present studies revealed L. rohita to be an omnivore-planktophage during its early life history which subsequently showed preference for plant matter (Herbi - omnivore)in later stages. • The earlier research based on the gut content analysis revealed it to be a zooplankton feeder ( Miah et al., 1984)or both a zoo and phytoplankton feeder ( Wahab et al .1994) or a periphyton feeder (NFEP 1997; Ramesh et al.1999; Azim et al., 2001
  • 36. REFERENCES • On the food of young carp fry. J. Zoo. Soc Alikunhi, K. H. (1952. India, 4:77-84 • Studies on the fishery and biology of Tor tor (Ham.) Desai, V. R. (1970) from river Narbada. J. Inland Fish. Soc., India.,2: 101-112 • On the fisheries of Orissa, Day, F. (1869), Pt.II, Pro. Zo-ol.Soc. Lond., pp. 372-387 • Maturation and spawning of Osteobrama bakeri- a threatened endemic ornamental fish in Kerala, India. Euphrasia, C. J. and Kurup, B. M. (2008). Indian J. Fish.,55(3): 273-280 • Food and feeding habits of Oreochromis mossambicus (Peters) from a subtropical environment. Hatikakoty , G. and Biswas, S. P. (2003)J. Inland Fish. Soc. India., 35(2):57-61 • Work Book on Limnology. Pratibha Publishers, Adoni, A. D. (1985). C-10, Gour Nagar, Sagar. India. 216. K. H. (1957). Fish Culture in India. Alikunhi, Farm Bulletin,20, 1-144. • Parasitological Examinations and Food Composition in the Gut of Feral African Carp, Labeo coubie in the Cross River,Southeastern, Nigeria. Ayotunde, E.O., Ochang, S.N. and Okey, I.B. (2007),African Journal of Biotechnology, 6,625-630.
  • 37. • Food and feeding behavior of the golden catfish, Horabagrus brachysoma (Gunther). Padmakumar K. G., Bindhu, L., Sreerekha, P. S. and Joseph, N. (2009). Indian J. Fish., 56(2): 139-142 • Ecological impact of tilapia, Oreochromis mossambicus (Peters) on the indigenous fish species in two reservoirs of Kerala. Panicker, A. C. (2000). Ph.D. Thesis, University of Kerala, Trivandrum, India. • A critique of the methods of study of food of fishes. Pillay, T. V. R. (1952).,J. Zoo. Soc., India, 4: 185-200 • Food and feeding habit of Catla catla (Hamilton-Buchanan) from Daya reservoir, Udaipur, Rajasthan. Kumar, R., Sharma, B. K. and Sharma, L. L. (2007).,Indian J. Anim. Res., 41 (4): 266-269 • Food and feeding habits of fringe Lipped Carp, Labeo fimbriatus (Bloch) of the Vanivilas Sagar Reservoir of Karnataka. Rajanna, K. B., Anjaneyappa H. N., Benakappa S., Chethan N., Reddy H. R. V., Somashekar., Prabhudeva K.N., Basavaraju Y. and Muttappa, K. (2015). Int. J. Rec. Sci. Res., 6(4) :3431-3434