591 research outputs found
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'
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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 тАУ 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
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
Climate change and marine ecosystems -Winter School on Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008
There is evidence that marine organisms and ecosystems are resilient to environmental change. The
biological components of marine systems are tightly coupled to physical factors, allowing them to respond
quickly to rapid environmental change and thus rendering them ecologically adaptable. Some species also
have wide genetic variability throughout their range, which may allow for adaptation to climate change
Effects of the Po2 on swimming activity and food utilization in ophiocephalus striatus
The obligatory air-breathing fish Ophiocephalus striatus fed on
goat- liver, surfaced 906 times, swimming 270 m/day in aerated
water (mean p02: 151 mm Hg) and 883 times, travelling 325
tn / day in non-aerated water (92 mm Hg); surfacing and swimming
activities increased below the p02 of 74 mOl Hg. Hanging
duration was more (8-4 hr / day) in the aerated series than that in
the non-aerated series (5.9 hr/day)
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