Big head carp
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1. The document provides information about the bighead carp, including its physical characteristics like a large head, mouth, and eyes, and typical length of 60cm. 2. Bighead carp are native to large rivers and one of the most exploited fishes in aquaculture. They are primarily filter feeders that consume zooplankton, phytoplankton, and detritus. 3. Bighead carp have economic importance as a source of protein and breed well in captivity, making them an asset for aquaculture. They help control insect populations and water pollution through their feeding habits.
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The bighead carp is a large, scaleless freshwater fish native to large rivers in Asia and parts of Africa. It can reach lengths of 60cm. Scientifically known as Aristichthys nobilis, it is one of the most important aquaculture species due to its fast growth rate and ability to breed well in captivity. As a filter feeder that consumes zooplankton, phytoplankton, and detritus, it helps control water pollution and competing species while being an important source of protein for humans.
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What is biodiversity?
Father of biodiversity- E.O. Wilson.
The term ‘biodiversity’’ encompasses the variety of all life forms on earth.
Define biodiversity –
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• Simple words in can be defined as the biodiversity .
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Define fish diversity –
“Fish Species diversity is defined as the number of species and abundance of each species that live in a particular location”.
The number of species that live in a particular location is called species richness.
India is one of the 17 mega biodiversity countries having four biodiversity hotspots namely the Western Ghats, eastern Himalayas, Indo-Burma and Sundaland that are included amongst the top ten most important hotspots in the world.
It also has rich freshwater(rivers, irrigationcanals,tanks, lakes,reservoirs) fish diversity.
Which living organisms–
All living organism in world 7.4 billion.
Fish Biodiversity in world-
World harbour total of 33059 spp. 4258 genera, 482 families about 58 % Marine water, 41% Fresh water and 1% migrants.
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India blessed with huge aquatic resources with 29,000 km of rivers, 0.3 million ha of estuaries, 0.9 million ha of back waters and lagoons, 3.15 million ha of reservoirs, 0.2 million ha of floodplain wetlands, 0.72 million ha of upland lakes and 2.02 million km sq area of Exclusive Economic Zone (EEZ) surrounding the seas,8129 km of coast line, which includes those of Andaman and Nicobar and Lakshadweep Islands.
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What is biodiversity?
Father of biodiversity- E.O. Wilson.
The term ‘biodiversity’’ encompasses the variety of all life forms on earth.
Define biodiversity –
‘’ Biodiversity include of the particular area may be living organisms (plant and animal) called biodiversity ’’.
• Simple words in can be defined as the biodiversity .
“Variety, variability b/w genes, spp. and ecosystem”.
Define fish diversity –
“Fish Species diversity is defined as the number of species and abundance of each species that live in a particular location”.
The number of species that live in a particular location is called species richness.
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Which living organisms–
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The seas surrounding the country, 14 major rivers, 44 medium rivers and innumerable small rivers and other inland water bodies provide one of the richest faunastic resources of the world.
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This document discusses cold water fisheries in India. It describes the temperature range for cold water fisheries (5-25°C) and notes that states like Kashmir, Himachal Pradesh, and Uttarakhand are well-suited for cold water fisheries. It identifies important cold water fish species in India like various types of mahseer and trout. Mahseer can grow up to 1.5 meters long and breed from July to September. Trout generally feed on other fish and aquatic invertebrates. Cold water fisheries provide income, employment, and food for local populations and have significant potential to contribute to India's fisheries sector and economy.
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The area has been defined by the Fishery Survey of India (F. S. I) as that part of the sea bed between 76°. 30'E to 78°.00 E Long, and07°.00 to 8°. 20' N Lat.
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The area of the sea south of Cape Comorin has been generally known as the 'Wadge Bank'.
The area has been defined by the Fishery Survey of India (F. S. I) as that part of the sea bed between 76°. 30'E to 78°.00 E Long, and07°.00 to 8°. 20' N Lat.
The area is about 4000 Sq. Miles in area
The area of the sea south of Cape Comorin has been generally known as the 'Wadge Bank'.
The area has been defined by the Fishery Survey of India (F. S. I) as that part of the sea bed between 76°. 30'E to 78°.00 E Long, and07°.00 to 8°. 20' N Lat.
The area is about 4000 Sq. Miles in area
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This black-browed albatross has been hooked on a long-line.
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Overview :
Many fisheries are non-selective fishing gear catching animals that they did not intend to. This non-taget extra catch is known as ‘bycatch’.
Of these bycatch species, some have a commercial value and are brought back to land by fishers to be sold. However, a large proportion is unwanted and so is discarded-thrown back over the side of the boat.
The mean of bycatch & discards
environmental & social Impacts
Some strategies & solutions
Some bycatch reduction devises in shrimp trawls :
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Relation between effort & bycatch
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Studies the physico-chemical parameters of water, soil and the nutritional va...
India is a high speed population growing country and present population of India is about 127 crores. Among them a huge number of our children have been suffering from mal-nutritional diseases. They need protein feed and molluscs meat especially cephalopods meat is a good source of protein. India harvested 1.73 lakh tones of cephalopods, 0.04 lakh tones of bivalves and 0.02 tones of gastropods from Indian marine resources like Arabian sea, Bay of Bengal and Indian Ocean in the year 2013-2014. The people of southern states of India consume molluscs meat in huge quantity as their everyday protein resource food. The local poor people at Digha eat occasionally only cephalopods meat. From our study for about last 4 years we get 12 bivalves species belonging to 5 orders, 6 families and 8 genera out of 54 available bivalves species, 2 gastropods species belonging to 2 orders, 2 families and 2 genera out of 35 available gastropods species and 4 cephalopods species belonging to 3 orders, 3 families and 4 genera out of 4 available cephalopods species are edible. Manotosh Das | Maity Joydev"Studies the physico-chemical parameters of water, soil and the nutritional values of edible cephalopods found at Digha coast, West Bengal, India" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-6 , October 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2253.pdf http://www.ijtsrd.com/other-scientific-research-area/other/2253/studies-the-physico-chemical-parameters-of-water-soil-and-the-nutritional-values-of-edible-cephalopods-found-at-digha-coast-west-bengal-india/manotosh-das
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This black-browed albatross has been hooked on a long-line.
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The document discusses the issue of bycatch in India's demersal trawl fisheries. It defines bycatch as unintended catch of non-target species and notes that it can have negative ecological impacts by depleting populations. The highest bycatch occurs from trawl fisheries and includes sea turtles, sharks, seabirds, and other species. Potential solutions discussed include using more selective fishing gear, implementing closed areas, and adopting fisheries management strategies to reduce bycatch and encourage sustainability. The conclusion emphasizes the need for more research on bycatch in tropical waters and adopting precautionary policies to reduce environmental impacts.
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Overview :
Many fisheries are non-selective fishing gear catching animals that they did not intend to. This non-taget extra catch is known as ‘bycatch’.
Of these bycatch species, some have a commercial value and are brought back to land by fishers to be sold. However, a large proportion is unwanted and so is discarded-thrown back over the side of the boat.
The mean of bycatch & discards
environmental & social Impacts
Some strategies & solutions
Some bycatch reduction devises in shrimp trawls :
TEDs
JTEDs
RES
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Fisheyes
Square mesh window
Relation between effort & bycatch
Effects of cod-end mesh size on the catch discarded
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Big head carp
- 1. Name :- Md. Ahasan Habib ROLL :- ASH1602008M Session:- 2015-16 Dept. of Fisheries and Marine Science Noakhali Science and Technology University
- 3. 1) The bighead carp is a species of freshwater fish. 2) The bighead carp has a large, scaleless head, a large mouth and eyes. 3) It is a large fish, typically it’s length is 60cm. 4) Bighead carp are native to the large rivers. 5) It is one of the most intensively exploited fishes in aquaculture.
- 5. Synonyms :Leuciscus nobilis Common name : Bighead carp Scientific classification: kingdom: Animalia phylum: chordata class: Actinopterygii Order: Cypriniformes Family: Cyprinidae Genus: Aristichthys Species: Aristichthys nobilis
- 6. 1. The bighead carp has a very fast growth rate. 2. Unlike the common carp, bighead carp are primarily filter feeders. 3. They are primarily consume zooplankton but also phytoplankton and detritus.
- 8. Economic importance: 1. Bighead carp is of considerable economic importance as source of protein. 2. This carp is a primary consumer and breeds well in captivity. 3. It is an additional aset in its culture. Distribution: Fresh and brakish waters of Bangladesh, India, Myanmers, Nepal, Pakistan, Srilanka, Malay Archipelago, Syria and West Africa.
- 9. 1. It control the population of harmful insects in the environmental through it’s feeding habit. 2. It also helps to control water pollution by eating detrius. 3. This species is a competitor for food and space to the indigenous Catla & Rohu.
- 10. • This species is available in Bangladesh and not listed as threatened in IUCN Red book of threatened fish of Bangladesh by IUCN Bangladesh (IUCN Bangladesh, 2000) Status and conservation: •Similar to the closely-related silver carpHypophthalmichthysmolitrix, the bighead carp is a filter feeder that prefers larger river habitats. In the united states bighead carp are frequently stocked into catfish culture ponds. Remarks: