Microalgae culture media and glass ware

Microalgae culture with desired species of flagellates or diatoms is the basis of any finfish or shell fish larval rearing and culture system. Natural sea water is a complex culture medium containing more elements and organic compounds, and which supports mixture of all phytoplankton and zooplankton. But in the laboratory culture, monospecies culture of micro algae is being maintained to support different culture requirements. Natural sea water with added nutrients is recommended, because direct sea water may not provide the optimum nutritional requirement of specific algae. So enrichment of natural sea water is necessary with the addition of macro nutrients, micro nutrients, trace elements and vitamins. Each micro alga needs the specific culture media, with basic nutrients like nitrogen, phosphorous, vitamins and trace metals for better growth and multiplication

Epinephelus lanceolatus (Bloch, 1790)

The giant grouper is characterized by its huge adult size, robust body, body depth of about 2.3- 3.4 times of standard length (SL). Head length is 2.2-2.7 times in standard length, inter-orbital area is flat to slightly convex, preopercle is rounded. Eyes small; eye diameter 5.8-14 in head length; maxilla reaches past vertical at rear edge of eye; mid-lateral part of lower jaw is with 2 or 3 rows of teeth (for 20-25 cm SL fish) and increasing to 15-16 rows in a fish of 177 cm standard length. Gill rakers of juveniles are 8-10 on upper limb, 14-17 on lower limb; rudiments in adults are difficult to distinguish from the bony plates covering the gill arch

సముద్ర చేపల వేటపై ఆధారపడ్డ జల వ్యవసాయం (Capture Based Aquaculture)

Hatchery based rearing technology cannot be followed for the species that may not be currently spawned in captivity and also for the species, whose complete life cycle has only been completed at the research and development level. It means that insufficient “seed” material is available for commercial farming operations of these species due to controlled breeding techniques have not been perfected. Therefore, farmers have to depend on “seed” available from the wild for aquaculture operation

Training Manual on Cage Culture of Marine Finfishes 7-12 November, 2016

Training manual on “Cage Culture of Marine Finfishes” is published by the Central Marine Fisheries Research Institute, Visakhapatnam Regional Centre, Andhra Pradesh under finance assistance from All India Network Project on Mariculture (AINP-M), ICAR. This manual is published as reading material in the training programme on cage culture of marine finfishes held during 7-12th November, 2016 for fishermen, aquafarmers and entrepreneurs involved in mariculture activities. This manual is consisting of different chapters which describe various aspects related to open sea cages

సముద్రములో చేపల సాగుకు అవసరమైన మూరింగుకు యాంత్రిక పరిజ్ఞ్యానం (Engineering aspects of mooring for offshore cage farming of finfishes)

Cage culture has been demonstrated as a suitable tool to enhance marine fish production in coastal areas by Central Marine Fisheries Research Institute in recent years. Cage farming fully depends on the cage stability in the sea considering the rough weather conditions throughout the seasons which differs from place to place. The design and installation of offshore cage needs basic understanding on their behavior in actual sea conditions. As a cage system operates in open sea, it is subjected to currents, waves and winds. The mooring and anchoring system helps to keep the cage in sea against drifting

पर्यावरण अनुकूल ग्रूपर पालन प्रौघोगिकियाँ – नया आशा किरण

कृपया पूरा लेखा पढ

కేజు సాగు కొరకు స్థలం ఎంపిక మరియు నీటి నాణ్యత (Site selection and water quality requirements for cage culture)

Site selection and water quality is one of the most important factors that determine construction costs, operating costs, production and mortality. Before establishing a cage culture site make sure the water body chosen will support the increased biological demand. This can be done by prior knowledge on the environmental/ hydro-biological parameters of the site or by conducting a field survey

కేజు సాగు పై నివేదిక (Overview of cage culture)

Cage farming in brackish and inshore waters in Asia is relatively recent, being started in Japan. It is estimated that over 95 percent of marine finfish aquaculture is in cages. Cage farming is most dominant in East and Southeast Asia, but not in South Asian nations. In India, cage culture started recently by CMFRI and it has demonstrated along the Indian coast for culturing different species such as Sea bass (Lates calcarifer), Lobster, Cobia etc to the farmer

Selection of candidate species for cage culture in India

In recent years, cage culture has emerged as one of the most viable method of sea farming. This aquaculture farming system offers the farmer a chance to utilize existing water resources, which is not used for other purposes. At present, situations like increase in consumption of fish, decline in wild stock and poor return from other culture systems paved strong interest for the fish production through cage culture among the fish farmers. Selection of fish species is playing major role in cage culture operation. Therefore, while selecting the species the biological as well as economical criteria should be taken into consideration, which includes available source of fish seed either from wild or hatcheries, seasonal abundance of the fish seeds in wild, acceptance to artificial feeds, consumer acceptance to the fish, economic value of the fish in local and international market, regional preference, compatibility of the species to culture in various system, resistance to disease and stress, ability to breed and produce the seed in confined environments. By considering the above criteria, a variety of commercially important marine fish species are highly found suitable for cage farming. The important candidate species from different parts of the world includes cobia (Rachycentron canadum), seabass (Lates calcarifer), snappers (Lutjanus sp.), pompanos (Trachinotus sp.) and groupers (Epinephelus sp.), etc. Commercial level seed production technology for majority of these fishes has been developed in many of the South East Asian countries. In India, the seed production of cobia, silver pompano, seabass and orange spotted grouper has been achieved successfully by different fisheries research institutions

చేపలను కేజులో సాగు చేయు విధానం (Cage culture of finfishes). CMFRI Training Manual Series No. 8/2016.

Training manual on “Cage Culture of Finfishes - Telugu” is published by the Central Marine Fisheries Research Institute, Visakhapatnam Regional Centre, Andhra Pradesh. This manual is published as reading material in the training programme on cage culture of finfishes for fishermen, aquafarmers and entrepreneurs involved in mariculture activities in telugu. This manual is consisting of different chapters which describe various aspects related to open sea cages