Development of Tuna Fisheries in Andaman and Nicobar Islands

The Andaman and Nicobar group of Islands consists of 572 islands, islets and rocky out crops and have an aggregate coastline of 1,912 km, which is about a fourth of the coastline of India. The continenta l she lf area is very limited with an estimated area of 16,000 sq. km and the sea is very deep within a few ki lometers from the shore. The Exclusive Economic Zone (EEZ) around the Islands encompasses around 0.6 sq. km, which is around 30% of the EEZ of India

Current status of tuna fisheries in India

Tuna fisheries in India have undergone significant changes in recent years. Though the coastal multi-species fishery is the mainstay for harvesting tunas and tuna-like fishes, targeted fishery for exploiting the high value tunas is emerging. Awareness has been created among the stakeholders that the continental shelf resources are more or less fully utilized and that further avenue for development lies in harvesting the oceanic tuna stocks. Fishing capacity from the shelf fishery is being diverted, with appropriate modifications, for harvesting the oceanic tuna resources. The production of tunas and tuna-like fishes has gone up to an all time high of 158,458 tonnes during the year 2008, out of which 24.2% was formed of oceanic tunas and 35% by neritic tunas. Exports of tunas and tuna products have shown remarkable growth with an all time high export figure of 37,302 tonnes in the year 2007-

Status of fisheries of Lakshadweep

The Union Territory of Lakshadweep (08 00'N and 12 30'N latitudes and 71 00'E and 74 00'E longitudes), consisting of eleven inhabited and 25 uninhabited islands, is scattered in the Arabian Sea at about 200- 400 km from the Malabar Coast.Lakshadweep sea is rich in fishery resources such as the tunas, billfishes Mar. Fish. Infor. Serv., T&E Ser., No. 187, 2006 2 pelagic sharks etc., and the other groups of food fishes, live baits and ornamental fishes.The estimated marine fishery resources potential in the Lakshadweep waters are about 63,000 to 1,40,000 tonnes of various groups of fish, whereas the present annual production is around 10,000 t (10% of the potential)

Coral reef fish abundance and diversity of seagrass beds in Kavaratti atoll, Lakshadweep, India

The community organization of coral reef fishes in the seagrass sub-habitat of Kavaratti toll, Lakshadweep, India was studied during the period from January 1991 to June 1992. Twenty-seven families represented by 65 species were recorded by the visual censes method. The community diversity for families and species was 2.49 and 3.14 respectively. Juveniles and sub-adults of the most adult reef fish, which inhabit other sub-habitats, were recorded here. The high species diversity in the seagrass beds is due to their roles as nurseries, shelter and foraging grounds for many species. Labridae, Chaetodontidae, Acanthuridae and Mullidae were the most speciose families. Ocurrence of siganids was highly seasonal. The cover that seagrass canopy provides conceals many species and perhaps influenced counts. The occurrence of balistids could be related to the presence of interstitial and patches and abundant invertebrate food. Scorpaenids subsisted on abundant invertebrates and juveniles fishes. High counts and pronounced variations make seagrass beds unstable habitats. However, monsoon assemblages were relatively stable perhaps due to lack of excessive new recruits and a habitat shift by most species

Recent Trends in Sea Surface Temperature and its Impact on Oil Sardine

The oil sardine is a coastal, pelagic schooling fish, forming massive fisheries in India. It has high population to doubling time of less than 15 months and is probably the largest stock in the Indian Ocean (www.fishbase.org). Like many other small pelagics, the oil sardine also has shown pbpulation crashes and sudden recoveries in the past. It is a tropical fish, governed by the vagaries of ocean climatic conditions. It is known for its restricted distribution in the Malabar upwelling region along the southwest coast. It attains a maximum total length of about 22 cm and plays a crucial role in the ecosystem as a plankton feeder and as food for large predators. The annual average production is 3.8 lakh tones (15% of all India total catch) valued at about Rs 350 crores. It is a cheap source of protein and forms a staple, sustenance and nutritional food for millions of coastal people

Biological productivity of the Indian Ocean

India has a long coast line of nearly 6,000 km with the Andaman and Nicobar Islands and the Laccadive Archipelago lying beyond her shores. The geographical position of India with the peninsular portion extending deep into the central part of the Indian Ocean gives her a locational advantage in marine fishing activities. At present though India contributes about 4096 of the fish landings of the Indian Ocean, when viewed against the world production of 76 million tannes oJ marine fish, her share is only 1.6 million tonnes represent ing less than 2%

Myctophid fishery along the Kerala coast with emphasis on population characteristics and biology of the headlight fish, Diaphus watasei Jordan & Starks, 1904

Myctophids form bycatch in deep sea shrimp trawls with an annual average catch of 2668 t during 2009 - 2011 in Kerala coast. Fishery occurred almost round the year with peak during November - February. Fishery and biology of the dominant species, Diaphus watasei was monitored. Peak spawning and recruitment of the species was during January-August. Growth parameters L∞ and K are estimated as 15.06 cm and 0.8 per year respectively. These values indicate that the species growth is relatively fast. Natural mortality estimate (M) is 1.21, total mortality (Z) 1.68 and fishing mortality (F) 0.47. The exploitation rate (E) is low being 0.279. These indicate that the stock is at its initial stage of exploitation and there is large scope for enhancing their commercial exploitation. The stock abundance, biomass and distribution of the resource need to be assessed. These factors have to be taken into consideration while planning for exploitation of myctophids in future

शूली महा चिंगटों के प्रजनन और स्फूटनशाला प्रौद्योगिकी के विकास में नई प्रगतियाँ

कृपया पूरा लेखा पढ

Current Status of fisheries for tunas and tuna-like fishes in India

The Indian tuna fishery comprises two distinct segments, the coastal fishery and the oceanic fishery. The main components of the coastal tuna fishery are the gillnet fishery around mainland India, in which different species of tunas and tunalike species occur, and the pole-and-line and troll line fisheries exploiting skipjack and young yellowfin tuna around the Lakshadweep Islands. The oceanic fishery uses exclusively longlines, targeting large deep-swimming yellowfin and bigeye tunas. The status of the coastal fishery was last reviewed by Pillai et al. (1995), and that of the oceanic fishery by Somvanshi and John (1995). The present paper gives an update of the national tuna fishery, both the coastal and oceanic segments, and its recent trends. All three groups of resources (tunas, billfishes and seerfishes) are covered

Demersal Fish Assemblages of the Southwest Coast of India

Demersal surveys from the southwest coast of India were analyzed to determine the general pattern of distribution of demersal species assemblages in the area. Season¬ality is pronounced, indicating three major periods, pre-monsoon, monsoon and post-monsoon. Each of the periods is characterized by different oceanographic circulation patterns that mainly determine the pattern of distribution of species assemblages. Spatial analysis confirmed that the Wadge Bank has the highest po¬tential for producing good quality fish. Region-wise analysis of data indicated that maximum effort and highest landings are from the known grounds along the south¬west coast, although certain northern areas were also found to be fairly productiv