Unusual fish mortality in Minicoy Lagoon

The article reports that except atherinids, all fishes other fishes were affected due to low oxygen level

Rational tangle surgery and Xer recombination on catenanes

The protein recombinase can change the knot type of circular DNA. The action of a recombinase converting one knot into another knot is normally mathematically modeled by band surgery. Band surgeries on a 2-bridge knot N((4mn-1)/(2m)) yielding a (2,2k)-torus link are characterized. We apply this and other rational tangle surgery results to analyze Xer recombination on DNA catenanes using the tangle model for protein-bound DNA.Comment: 20 pages, 23 figure

रीफ जंगल का शेर: भारतीय लायन फिश

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Gill net fishery off Veraval during 1982-1990

The fishery resources off Veraval are exploited intensively mainly by two gears, viz., trawl and gill nets. The gill net fishery has undergone changes by way of introduction of many out-board motorised canoes. Two types of crafts, wooden and FRP dugout canoes (with out-board engine) and plankbuilt boats are used for gill net fishing. Effort has remained almost constant during the 9 years. Fishes belonging to 10 groups formed about 98% of the gill net fishery

The Indian mackerel

The Indian mackerel forms the major pelagic resources along the Indian coast Its trend of production fiuctuates in space and time. Several scientists have conducted considerable research works on its biology, fishery and population structure from various parts of its distributional range at different periods of time. Its fishing pattern witnessed large changes in response to mechanisation, motorisation, innovative gear and synthetic nets, together with extension of fishing to deeper grounds. The paper reviews the status of mackerel fisheries research that were carried out in CMFRI since 1950 through regular monitoring programme for its sustainable harves

Record size Gizzard Shad and Titan Cardinalfish landed

The Indo-Pacific genus Holapogon universally known as titan cardinalfish is represented by a single species Holapogon maximus (Boulenger, 1888) which are purely marine, mostly found in 38 to 100 m depths. In recent years particularly during post monsoon

Revival of bleached Zoanthus sociatus (Ellis & Solander, 1786) in the intertidal waters of Thikkodi, Malabar coast, Kerala

Revival of SST induced bleached anthozoan; Zoanthus sociatus in the intertidal zone of Thikkodi, Calicut was investigated for a period of 67 days from May to July 2010. Regaining of chlorophyll pigments of symbiotic zooxanthellae in the bleached Zoanthus colonies was correlated with reduction in SST indicating a temperature linked bleachin

Rare Palmate octopus landed

In recent years, the octopus fishery is gaining importance due to the increase in the export demands. The catches of the same has been steadily increasing due to the expansion of the trawl fishing activities into the deeper waters. They are mainly landed as by-catch in the trawl landings. The octopus landings in Malabar are mainly supported by the species like Amphioctopus neglectus, A. marginatus, Octopus vulgaris, Cistopus indicus, Callistoctopus luteus etc. However, in the last week of August 2018 rare palmate octopus Tremoctopus gracilis were observed

राष्ट्रीय खाघ सुरक्षा केलिए उत्तरदायित्वपूर्ण मात्स्यिकी प्रबन्धन एक विकल्प

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