Vulnerability of corals to seawater warming -Winter School on Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008

Coral reefs are the most diverse marine habitat, which support an estimated 0.5 to 2.0 million species in the world oceans. They are among the most sensitive of all ecosystems to temperature changes, exhibiting bleaching (a phenomenon in which the symbiotic zooxanthellae are expelled by coral polyps) when stressed by higher than normal sea temperatures. The hypothesis that corals and associated reef organisms might be the first to show adverse effects of global warming has been widely recognized. Coral bleaching is by far the most damaging event in coral reefs and is currently viewed as a major threat to the long-term health of coral reef communities

Mapping fish research in India - Missed opportunity

Jayashree and Arunachalam have analysed the impact of fish re$earch in India among th e global scientific community and reported that majority of publications, particularly those from the central research laboratories, are published in non-Science Citation Index (SCI) and non-Journal Citation Reports (JCR) journals of low impact with poor visibility. They have concluded 'fish research in India appears to be mediocre in general'

समुद्री मात्स्यिकी संपदाओं का प्रबंधन सिद्धांत और प्रयोग

कृपया पूरा लेखा पढ

Madras Fisheries Harbour - A status report for 1995

Madras Fisheries Harbour is one of the largest fisheries harbours in the east coast ofIndia. It provides base for mechanised as well as indigenous fishing crafts. It is estimated that 480 trawlers, 20 mechanised gill netters, 25 motorised and 200 nonmotorised catamarans make use of this harbour. The annual fish landings in 1995 were 38.251 tonnes; the trawlers contributing 96.1% of the landings

Sustainable coastal fisheries for nutritional security

Fisheries constitute the only sector, which offers animal protein to a broad economic cross-section of the society, thereby is in an advantageous position to ensure nutritional security. However, the scope for increasing coastal fish production, which contributes about 50% to the total fish production in India, appears to be limited. Reliable stock estimates, assessment of the efficacy of the existing fishing regulations, present economic status of fishing operations, formulation of key management interventions, and above all, allocation of adequate funds are a few major issues that demand immediate attention to ensure sustainability of marine fisherie

Fisheries management techniques- Winter School on Towards Ecosystem Based Management of Marine Fisheries – Building Mass Balance Trophic and Simulation Models

Marine living resources are by no means inexhaustible, although some of them are extremely rich. In India, the production of marine fish increased by about 5.5 times in 55 years, from 0.5 million tonnes in 1948 to 2.7 m t in 2003. However, the catch rate is on the decline in many centers, and the scope for further increase in catch from the inshore waters is limited. To sustain marine fish production, a consistent fisheries management policy and implementation of management measures are needed. In recent years, considerable time and effort have been spent, discussing the need for and modalities of marine fisheries management involving the fisheries scientists, politicians, managers and fisherfolk

Need for ecosystem-based fisheries management for India

Ecosystem-based fisheries management (EBFM) can be an important complement to existing fisheries management approaches. EBFM calls for recognition of fi sheries management and exploitation as an integral part of the marine ecosystem. For moving toward EBFM, protocol has to be developed to deal with complex interactions of institutions and societies. Development of food web based model for each ecosystem is onc of the prerequisites. Delineation and implementat ion of no-fishing zones ofTer promise not only for fisheries sustainability but also for resource enhancement. Implementation ofEBFM by involving all stakeholders is a challenging, but not an impossible task, and is expected to yield immediate and long-term benefits

Ontogenetic development of surfacing behaviour in the obligatory air-breathing fish Channa (=Ophiocephalus ) Striatus

Two series of experiments were conducted to relate surfacing behaviour and post-embryonic development in the air-breathing fish Channa s(riatw;. When prevented surfacing, the duration of survival on aquatic breathing alone decreased from 15 .6 hr in 7 mg fry to 8.8 hr in 0.75 g fingerling; when given free access to air, the surfacing frequency was the most erratic ( 1235 ± 823 (SO) limes/day) in the former and became regular (1323 ± 114 times/day) in the latter

Impact of Climate Change in the Indian Marine Fisheries and the Potential Adaptation Options

Marine capture fisheries have very important roles for food supply, food security and income generation in India. About one million people work directly in this sector, producing 3 million t annually. The value of fish catch at production level is about USD 2.8 billion (CMFRI, 2007) and India earns USD 1.6 billion by exporting fish and fishery products. The country has a fishing fleet consisting of 58,911 mechanized craft, 75,591 motorized craft and 104,270 non-motorized craft (CMFRI, 2006). Due to overfishing, unregulated fishing, habitat destruction and pollution, production from marine fisheries is stagnant in the last ten years. Being open access to a large extent, there is intense competition among the stakeholders with varied interests to share the limited resources in the coastal waters

Effects of feeding on the swimming activity and growth of Ophiocephalus striatus

Swimming activity of the obligatory air-breathing fish Ophiocephalus striatus reared in cylindrical aquaria on different rations (0-43-3 mg/gjday) increased from 58 m/day for the starving group to 439 m/day for the group fed a maximum ratioo. Swimming speed also increased from 2•4 cm/sec in the former group to 5•2 cm/sec in the latter group. Owing to sustained swimming activity and the consequent fatigue, the test individuals' hung' to the surface for a definite interval