Culture-based fisheries and stock enhancement are the most common forms of resource enhancement used in Indian reservoirs. Culture-based fisheries involve controlling part of certain species' life cycles by transplanting or releasing their seed or fry into open waters, thereby increasing production. Stock enhancement can involve introducing new species, adjusting stock densities, or enhancing predators. Common practices for Indian reservoirs include stocking carps like catla and rohu, as well as predatory fish or prawns depending on the ecosystem. Pen culture is also used, involving cordoning off portions of shallow waterbodies for fish farming.
The early mortality syndrome (EMS) in shrimp has been ravaging production systems, spreading vertically in Asia and horizontally to countries as far away as Mexico since first reported in 2009.
The early mortality syndrome (EMS) in shrimp has been ravaging production systems, spreading vertically in Asia and horizontally to countries as far away as Mexico since first reported in 2009.
Any aquatic invertebrate animals having a cutaneous or calcareous shell surrounding there body and belonging to the phylum Mollusca, the class Crustacea (phylum Arthropoda), or phylum Echinodermata is known as shellfish. The term is often used for the edible species of the groups, especially those that are fished or raised commercially. The most commercially important shellfish are:
• Mollusk: Oysters, mussels, scallops and clams
• Crustacean: Shrimp, prawn, lobster, crab and crayfish
• Echinoderm: sea urchins and sea cucumbers
Shellfish hatchery is a place where shellfish seeds are produced in a controlled way. Hatchery management is a branch of science which deals with the activities including from collection of brood shellfish to seed production. Culturing of shellfish has occurred since ancient times. Although controlled rearing of young shell has long existed, hatchery production is a more recent advancement. Producing seed under controlled conditions in a hatchery will disconnect its production from environmental factors and provide a reliable supply of seed. Oysters, mussels and mud crabs are the most important groups of shellfish after shrimp and prawn. These are popular among the western countries and becoming more popular all over the world. So hatchery management of oyster, mussel and crab is crucial.
Growth, yield and economic returns of striped catfish (Pangasianodon hypophth...Md. Atick Chowdhury
The influence of stocking density plays one of the major roles in the final production for profitable aquaculture. This study was conducted to investigate the effect of stocking density on growth, yield and economic return of striped catfish (Pangasianodon hypophthalmus). The fish were reared in cages at three different stocking densities. Fishes were stocked at 19, 22 and 25 fish/m3 densities indicated as T1, T2 and T3. After 90 days of the experimental period, growth and yield parameters were studied and economic analysis regarding farm profitability was carried out. Fish growth performance significantly decreased with increasing stocking density. The mean yields were 12.27 ± 0.08, 14.00 ± 0.14 and 15.01 ± 0.20 kg/m3 in T1, T2 and T3, respectively and showed significant variations (P < 0.05) with increasing stocking density. RGR, SGR, PER between 19 and 22 fish/m3 were not significantly different, but they were significantly higher than 25 fish/m3. The FCR was significantly lower in 19 and 22 fish/m3 than the 25 fish/m3 stocked cages. Environmental parameters were within the acceptable range. The benefit-cost analysis revealed significantly higher BCR in 19 and 22 fish/m3. Overall, best farm profitability was achieved from the stocking density of 22 fish/m3 among three stocking densities experimented in the study.
Fish farming traditionally has many drawbacks. But it evolved after the ages to produce huge number of fishes in lesser space with Biofloc technology which has a competitive advantage over the traditional technique.
Current food needs in the world are growing due to population boom and the popularity of fish is drastically improved due to it, whereas the supply of fish becoming stagnant due to pollution, plastic and many factors, etc. To tackle this needs scientists have developed a technique to produce it commercially with less space, in lesser time with a less inorganic food requirement.
Mohan Tarp supply the best solution for Biofloc PVC Coated Fish Tank in Eastern India. Our PVC Tarpaulin Biofloc Fish Tank comes in 550 GSM and in Blue Colour.
This slide is about a pearl spot fish which includes about its habit, habitat ,morphology, food and feeding, breeding behaviour, hatching, larval rearing, embryonic development, nutritive values, farming practices, seed production and pond preparation...
Aquaculture reached a landmark in 2009, supplying greater than half of the total fish and shellfish for human consumption (Naylor et al. 2009). With global fisheries in decline and human population increasing, the gap between protein supply and protein demand is widening. Aquaculture must continue to expand to meet these growing needs, and it must do so in a safe, sustainable manner that decreases the world’s reliance on harvesting fish for fishmeal while still producing a high quality product. There are several difficult hurdles the aquaculture industry now faces if this needed growth is to occur.
Any aquatic invertebrate animals having a cutaneous or calcareous shell surrounding there body and belonging to the phylum Mollusca, the class Crustacea (phylum Arthropoda), or phylum Echinodermata is known as shellfish. The term is often used for the edible species of the groups, especially those that are fished or raised commercially. The most commercially important shellfish are:
• Mollusk: Oysters, mussels, scallops and clams
• Crustacean: Shrimp, prawn, lobster, crab and crayfish
• Echinoderm: sea urchins and sea cucumbers
Shellfish hatchery is a place where shellfish seeds are produced in a controlled way. Hatchery management is a branch of science which deals with the activities including from collection of brood shellfish to seed production. Culturing of shellfish has occurred since ancient times. Although controlled rearing of young shell has long existed, hatchery production is a more recent advancement. Producing seed under controlled conditions in a hatchery will disconnect its production from environmental factors and provide a reliable supply of seed. Oysters, mussels and mud crabs are the most important groups of shellfish after shrimp and prawn. These are popular among the western countries and becoming more popular all over the world. So hatchery management of oyster, mussel and crab is crucial.
Growth, yield and economic returns of striped catfish (Pangasianodon hypophth...Md. Atick Chowdhury
The influence of stocking density plays one of the major roles in the final production for profitable aquaculture. This study was conducted to investigate the effect of stocking density on growth, yield and economic return of striped catfish (Pangasianodon hypophthalmus). The fish were reared in cages at three different stocking densities. Fishes were stocked at 19, 22 and 25 fish/m3 densities indicated as T1, T2 and T3. After 90 days of the experimental period, growth and yield parameters were studied and economic analysis regarding farm profitability was carried out. Fish growth performance significantly decreased with increasing stocking density. The mean yields were 12.27 ± 0.08, 14.00 ± 0.14 and 15.01 ± 0.20 kg/m3 in T1, T2 and T3, respectively and showed significant variations (P < 0.05) with increasing stocking density. RGR, SGR, PER between 19 and 22 fish/m3 were not significantly different, but they were significantly higher than 25 fish/m3. The FCR was significantly lower in 19 and 22 fish/m3 than the 25 fish/m3 stocked cages. Environmental parameters were within the acceptable range. The benefit-cost analysis revealed significantly higher BCR in 19 and 22 fish/m3. Overall, best farm profitability was achieved from the stocking density of 22 fish/m3 among three stocking densities experimented in the study.
Fish farming traditionally has many drawbacks. But it evolved after the ages to produce huge number of fishes in lesser space with Biofloc technology which has a competitive advantage over the traditional technique.
Current food needs in the world are growing due to population boom and the popularity of fish is drastically improved due to it, whereas the supply of fish becoming stagnant due to pollution, plastic and many factors, etc. To tackle this needs scientists have developed a technique to produce it commercially with less space, in lesser time with a less inorganic food requirement.
Mohan Tarp supply the best solution for Biofloc PVC Coated Fish Tank in Eastern India. Our PVC Tarpaulin Biofloc Fish Tank comes in 550 GSM and in Blue Colour.
This slide is about a pearl spot fish which includes about its habit, habitat ,morphology, food and feeding, breeding behaviour, hatching, larval rearing, embryonic development, nutritive values, farming practices, seed production and pond preparation...
Aquaculture reached a landmark in 2009, supplying greater than half of the total fish and shellfish for human consumption (Naylor et al. 2009). With global fisheries in decline and human population increasing, the gap between protein supply and protein demand is widening. Aquaculture must continue to expand to meet these growing needs, and it must do so in a safe, sustainable manner that decreases the world’s reliance on harvesting fish for fishmeal while still producing a high quality product. There are several difficult hurdles the aquaculture industry now faces if this needed growth is to occur.
The principle of integrated fish farming involves farming of fish along with livestock or/and agricultural crops.. This type of farming offers great efficiency in resource utilization, as waste or by product from one system is
effectively recycled. It also enables effective utilization of available farming space for maximizing production.
•The rising cost of protein-rich fish food and chemical fertilizers
as well as the general concern for energy conservation have created awareness in the utilization of rice and other crop fields and livestock wastes for fish culture. Fish culture in combination with agriculture or livestock is a unique and lucrative venture and provides a higher farm income, makes available a cheap source of protein for the
rural population, increases productivity on small land-holdings
and increases the supply of feeds for the farm livestock.
Scope of Integrated Fish Farming
The scope of integrated farming is considerably
wide. Ducks and geese are raised in pond, and pond- dykes are used for horticultural and agricultural
crop products and animal rearing.
The system provides meat, milk, eggs, fruits,
vegetables, mushroom, fodder and grains, in
addition to fish.
Hence this system provides better production, provides more employment, and improves socio- economic status of farmers and betterment of rural economy.
Classification of Integrated Fish Farming
Integrated fish farming can be broadly classified into two, namely Agriculture-fish and Livestock-fish systems
Agriculture-fish systems- Agri-based systems include rice-fish integration,
horticulture-fish system, mushroom- fish system, seri-fish system.
Livestock-fish systems- Livestock-fish system includes cattle-fish system, system, pig-fish system, poultry-fish system, duck-fish system, goat-fish system, rabbit-fish system.
Fish- livestock farming systems are recognized as highly assured technology where predetermined quantum of livestock waste obtained by rearing the live stock in the pond area is applied in pond to raise the fish crop without any other additional supply of nutrients. The main potential linkages between livestock and fish production concern use of nutrients, particularly reuse of livestock manures for fish production. The term nutrients mainly refer to elements such as nitrogen (N) and phosphorus (P) which function as fertilizers to stimulate natural food webs rather than conventional livestock nutrition usage such as feed ingredients. Both production and processing of livestock generate by-products that can be used for aquaculture. Direct use of livestock production wastes is the most widespread and conventionally recognized type of integrated farming. Production wastes include manure, urine and spilled feed; and they may be used as fresh inputs or be processed in some way before use.
Based on the type of livestock used for integration there are many combinations in livestock-fish systems. Some of the combination are listed and discussed below.
Cattle-Fish Culture
Manuring of fish pond by using cow dung is one of the common practices all-over the world. A healthy cow excretes over 4,000-5,000 kg dung, 3,500-4,000 lt urine on an annual basis. Manuring with cow dung, which is rich in nutrients results in increase of natural food organism and bacteria in fishpond. A unit of 5-6 cows can provide adequate manure for 1 ha of pond. In addition to 9,000 kg of milk, about 3,000-4,000 kg fish/ha/year can also be harvested with such integration.
Cowshed should be built close to fishpond to simplify handling of cow manure. A cow requires about 7,000-8,000 kg of green grass annually. Grass carp utilizes the left over grasses, which are about 2,500 kg. Fish also utilize the fine feed which consists of grains wasted by cows. In place of raw cow dung, biogas slurry could be used with equally good production. Twenty to thirty thousand kg of biogas slurry are recycled in 1 ha water area to get over 4000 kg of fish without feed or any fertilizer application.
Pig-Fish system
The waste produced by 30-40 pigs is equivalent to 1 tonne of ammonium sulphate. Exotic breeds like White Yorkshire, Landrace and Hampshire are reared in pig-sty near the fish pond. Depending on the size of the fishponds and their manure requirements, such a system can either be built on the bund dividing two fishponds or on the dry-side of the bund. Pigsties, however, may also be constructed in a nearby place where the urine and dung of pigs are first allowed to the oxidation tanks (digestion chambers) of biogas plants for the production of methane for household use. The liquid manure (slurry) is then discharged into the fishponds through small ditches running through pond bunds. Alternately, the pig manure may be heaped in localized places of fishponds or may be applied in fishponds.
Unconventional Plant Protein Feed Resources in West Bengal for use in Aquacul...MdSharbar
In recent years, there has been a growing interest in utilizing unconventional plant protein sources for aquaculture due to their cost-effectiveness and sustainability.
This presentation focuses on exploring unconventional plant protein feed resources available in West Bengal, India, for use in aquaculture.
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Venturesgreendigital
Willie Nelson is a name that resonates within the world of music and entertainment. Known for his unique voice, and masterful guitar skills. and an extraordinary career spanning several decades. Nelson has become a legend in the country music scene. But, his influence extends far beyond the realm of music. with ventures in acting, writing, activism, and business. This comprehensive article delves into Willie Nelson net worth. exploring the various facets of his career that have contributed to his large fortune.
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Introduction
Willie Nelson net worth is a testament to his enduring influence and success in many fields. Born on April 29, 1933, in Abbott, Texas. Nelson's journey from a humble beginning to becoming one of the most iconic figures in American music is nothing short of inspirational. His net worth, which estimated to be around $25 million as of 2024. reflects a career that is as diverse as it is prolific.
Early Life and Musical Beginnings
Humble Origins
Willie Hugh Nelson was born during the Great Depression. a time of significant economic hardship in the United States. Raised by his grandparents. Nelson found solace and inspiration in music from an early age. His grandmother taught him to play the guitar. setting the stage for what would become an illustrious career.
First Steps in Music
Nelson's initial foray into the music industry was fraught with challenges. He moved to Nashville, Tennessee, to pursue his dreams, but success did not come . Working as a songwriter, Nelson penned hits for other artists. which helped him gain a foothold in the competitive music scene. His songwriting skills contributed to his early earnings. laying the foundation for his net worth.
Rise to Stardom
Breakthrough Albums
The 1970s marked a turning point in Willie Nelson's career. His albums "Shotgun Willie" (1973), "Red Headed Stranger" (1975). and "Stardust" (1978) received critical acclaim and commercial success. These albums not only solidified his position in the country music genre. but also introduced his music to a broader audience. The success of these albums played a crucial role in boosting Willie Nelson net worth.
Iconic Songs
Willie Nelson net worth is also attributed to his extensive catalog of hit songs. Tracks like "Blue Eyes Crying in the Rain," "On the Road Again," and "Always on My Mind" have become timeless classics. These songs have not only earned Nelson large royalties but have also ensured his continued relevance in the music industry.
Acting and Film Career
Hollywood Ventures
In addition to his music career, Willie Nelson has also made a mark in Hollywood. His distinctive personality and on-screen presence have landed him roles in several films and television shows. Notable appearances include roles in "The Electric Horseman" (1979), "Honeysuckle Rose" (1980), and "Barbarosa" (1982). These acting gigs have added a significant amount to Willie Nelson net worth.
Television Appearances
Nelson's char
Artificial Reefs by Kuddle Life Foundation - May 2024punit537210
Situated in Pondicherry, India, Kuddle Life Foundation is a charitable, non-profit and non-governmental organization (NGO) dedicated to improving the living standards of coastal communities and simultaneously placing a strong emphasis on the protection of marine ecosystems.
One of the key areas we work in is Artificial Reefs. This presentation captures our journey so far and our learnings. We hope you get as excited about marine conservation and artificial reefs as we are.
Please visit our website: https://kuddlelife.org
Our Instagram channel:
@kuddlelifefoundation
Our Linkedin Page:
https://www.linkedin.com/company/kuddlelifefoundation/
and write to us if you have any questions:
info@kuddlelife.org
Natural farming @ Dr. Siddhartha S. Jena.pptxsidjena70
A brief about organic farming/ Natural farming/ Zero budget natural farming/ Subash Palekar Natural farming which keeps us and environment safe and healthy. Next gen Agricultural practices of chemical free farming.
Micro RNA genes and their likely influence in rice (Oryza sativa L.) dynamic ...Open Access Research Paper
Micro RNAs (miRNAs) are small non-coding RNAs molecules having approximately 18-25 nucleotides, they are present in both plants and animals genomes. MiRNAs have diverse spatial expression patterns and regulate various developmental metabolisms, stress responses and other physiological processes. The dynamic gene expression playing major roles in phenotypic differences in organisms are believed to be controlled by miRNAs. Mutations in regions of regulatory factors, such as miRNA genes or transcription factors (TF) necessitated by dynamic environmental factors or pathogen infections, have tremendous effects on structure and expression of genes. The resultant novel gene products presents potential explanations for constant evolving desirable traits that have long been bred using conventional means, biotechnology or genetic engineering. Rice grain quality, yield, disease tolerance, climate-resilience and palatability properties are not exceptional to miRN Asmutations effects. There are new insights courtesy of high-throughput sequencing and improved proteomic techniques that organisms’ complexity and adaptations are highly contributed by miRNAs containing regulatory networks. This article aims to expound on how rice miRNAs could be driving evolution of traits and highlight the latest miRNA research progress. Moreover, the review accentuates miRNAs grey areas to be addressed and gives recommendations for further studies.
Characterization and the Kinetics of drying at the drying oven and with micro...Open Access Research Paper
The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.
WRI’s brand new “Food Service Playbook for Promoting Sustainable Food Choices” gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
1. AEM – 507
Management of
inland aquatic
ecosystems
Resource
enhancement
Presenter name
Meenatchi S
FRM-MB0-02
2. • Technical interventions in existing aquatic resource systems, which can substantially alter the
environment, institutional and economic attributes of the system
• ‘culture-based fisheries (stock and recapture)’
• ‘stock enhancement (enhanced capture fisheries)’
• ‘species enhancement (introduction of species)’
• ‘environmental enhancement (fertilizing water bodies)’
• ‘management enhancement (introducing new management options)’
• ‘enhancement through new culture systems (cage culture, pen culture, FADs, etc.)’
• The two most common forms of enhancement suitable for and followed in Indian reservoirs
are:
• culture-based fisheries
• stock enhancement
• Culture-based fishery is the most common mode of enhancement being followed in inland
water bodies in India
2
Enhancement
3. 3
Culture based fisheries increase
production in natural environments by
controlling a part of the life history of
certain species and transplanting or
releasing their seed or fry into open
waters
4. Species enhancement
• Inducting new species to broaden the catch
structure
• Stocking of right species at appropriate
proportion- key factor
• Plays very important role for the
augmentation of fish production from
reservoirs
• The combination and composition of species
to be selected is based on the available food
niche
• Species introductions into a reservoir system
area controversial issue on account of the
competition offered by the introduced species
at various levels to the endemic fishes of the
system
4
• Catla, rohu performed better in terms of
yield
• Transplanted catla established a breeding
population in most of the reservoirs
• High proportion of catla & rohu are
recommended for stocking in reservoirs
with high density of phytoplankton and
zooplankton
• The % 0f mrigal should be determined
based on benthic food niche and detritus
load
5. Species enhancement scenario of Indian reservoirs
Common carp-
suitable to many
reservoirs of
karnataka & tamil
nadu
Small reservoirs-
catfish fishery
ICAR-CIFRI promotes
the stocking of
freshwater prawn, in
small productive
reservoirs
Grass carps & silver
carp- unfavourable for
stocking in south
indian reservoirs
Ompok pabda,
O.bimaculatus, Mystus
cavasius – karnataka
reservoirs
Indian reservoirs are
mostly being stocked
with carps
5
6. Stock enhancement
Stock enhancement may be done either
by altering the species itself or by
altering the relative stock density
Types of stock enhancement:
• Single species enhancement
• Multiple species enhancement
• Predator enhancement
• Predator control
• Multispecies enhancement strategy
is usually applied across India
• Non-predator introductions in
reservoirs could be related to the
plasticity in feeding niches
• This would allow a greater degree of
niche-packing and restricts effects on
long-term stability of existing
communities
• Predator enhancement- to control
weed fish (tried in Tungabhadra
reservoir)
9. Pen culture
• Pens are portions of waterbody cordoned off by erecting a fence like
structure
• Hybrid between cage and pond culture
• Suitable for waterbodies with depth not more than 1.2 m
• Muddy clayed loamy soil- best utilised bottom
• Different shapes of pens:
• polygonal
• rectangular
• square
• circular
• Rectangular shaped pens were widely used in India
