On the occurrence of Megalopae of Atergatis integerrimus and A. Roseus in the Ennore estuary near Madras

James, D B (1991) On the occurrence of Megalopae of Atergatis integerrimus and A. Roseus in the Ennore estuary near Madras. Marine Fisheries Information Service, Technical and Extension Series, 107 . pp. 18-19.

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Abstract

The megalopae were absent in the collections during January to August, 1985andJanuary to May, 1986. Maximum number of megalopae were seen during September and October. The occurrence of megalopae is influenced by the lunar phase and the tidal ryhthm. Except on six occasions the megalopae were more during the high tide. Maximum number occurred during newmoon in September and October '85. In 1986 during full moon, the megalopae were abundant during September and October. Collections were made by fixed net for one hour during high and low tide of all four phases of the moon the megalopae enter the estuary in maximum numbers during the high tide on new moon and full moon nights. This pattern of abundance also shows that the breeding season for the crab Atergatis integerrimus and A. roseus is from June to December with peak in September and October.

Item Type:Article
Uncontrolled Keywords:megalopae; Atergatis integerrimus; A. roseus; prawn postlarvae
Subjects:Crustacean Fisheries > Prawn and Prawn fisheries
Divisions:CMFRI-Tuticorin
ID Code:4343
Deposited By:INVALID USER
Deposited On:09 Sep 2010 14:10
Last Modified:09 Sep 2010 14:10

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