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

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

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

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

Adaptation and mitigation measures. In: Winter School on Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008

From the observations of increases in global average air and ocean temperature, it is now evident that warming of the climate system is unequivocal. The root cause of global warming is in the increasing concentration of greenhouse gases (GHG), particularly CO2, in the earth’s atmosphere in the period following the industrial revolution. Increases in GHG emissions in the atmosphere are largely because of fossil fuel use, with the energy, transport and industrial sectors accounting for nearly 60% of GHG emissions

Surfacing activity and food utilisation in the obligatory air-breathing fish Ophiocephalus striatus as a function of body weight

Reared in cylindrical aquaria containing different depths of water (2•5 to 70 cm) the obligatory air-breathing fish Ophiocephalus striatus, belonging to different weight classes (0. 1, 0.75, 10, 20and 41 g), was forced to swim vertically a longer or shorter distance per surfacing. Surfacing frequency was a depth-dependent.activity in individuals weighing less than 20 g in all weight classes, the frequency was nearly 2 times more in the series fed ad libitum on fish muscle, than in the one where the fish were starved