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Some characteristics of the mackerel fishery in India

The recent increases in the catch of mackerel from the deeper waters of the Calicut - Cochin area indicate that the fish move down to deeper areas during summer due to the thermocline. Spreading of trawling to deeper waters, with the opening up of export market for cephalopods, can be the reason for the increased catch of mackerel by trawls. The most successful period of recruitment to the mackerel fishery coincides with upwelling (Mackerel form large shoals to feed on the plankton that is abundant due to upwelling, making surface fishery highly successful.) which guarantees abundance of stock during the period. Intensity of upwelling increases catchability and can result in a decline in spawning stock and recruitment. This can be one of the reasons for wide annual fluctuations in the catch of this resource

On the mass stranding of dolphins at Vellapatty near Tuticorin in the Gulf of Mannar.

The mass stranding of dolphins is not a rare phenomenon along the Indian coast. On 28-06-99 a total of 42 no of dolphins stranded at Vellapatty near Tuticorin in the Gulf of Mannar. The dolphins were identified as Sousa chinnensis (Osbeck), the hump-back dolphin (28 Nos) and Stenella longtrostris Gray, the spinner dolphin (9 Nos)

Sea ranching of pearl oyster

Sea ranching of pearl oyste

Early development of <i>Podophthalmus vigil</i> (fabricius) in the laboratory and its fishery off porto novo

137-140After an incubation period of 12-13 days, the berried crab, P. vigil, releases the larvae hatched out mostly in prezoeal and a few in first zoeal stage. Descriptions of early larval stage of P. vigil and the salient features of corresponding stages of some Portunids are given. Contribution of P. vigil to a regular commercial fishery off Porto Novo waters has been stressed

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Not AvailableThe mass stranding of dolphins is not a rare phenomenon along the Indian coast. On 28-06-99 a total of 42 no of dolphins stranded at Vellapatty near Tuticorin in the Gulf of Mannar. The dolphins were identified as Sousa chinnensis (Osbeck), the hump-back dolphin (28 Nos) and Stenella longtrostris Gray, the spinner dolphin (9 Nos).Not Availabl

Not Available

Not AvailableThe mass stranding of dolphins is not a rare phenomenon along the Indian coast. On 28-06-99 a total of 42 no of dolphins stranded at Vellapatty near Tuticorin in the Gulf of Mannar. The dolphins were identified as Sousa chinnensis (Osbeck), the hump-back dolphin (28 Nos) and Stenella longtrostris Gray, the spinner dolphin (9 Nos).Not Availabl