Oral incubation in marine catfishes of the family

Menon, N G (1991) Oral incubation in marine catfishes of the family. Indian Journal of Fisheries, 38 (1). pp. 30-34.


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Mouth breeding in several species of tachysurid catfishes was observed during 1970-76. In all tachysurids male is the brood-carrier. Large, yolked and ripe functiraial ova as well as small and non-yolked, non-functional ova were extruded at the time of spawning. After retaining the large functional ova in the mouth, the non-functional ova were probably eaten by the male parent. Efficiency in fertilization and transfer of eggs was brought about by enlarged pelvic fins of female. The oral cavity of the incubating male got enlarged to receive large number of eggs and the oral epithelium secreted large quantity of mucus for the safe carrying of eggs or embryos in the mouth. The incubating parent usually went without food, although the fry fed in the parent's mouth. Incubation in Tachyswus thalassinus lasted for 28-30 days.

Item Type: Article
Uncontrolled Keywords: Catfishes; oral incubation
Subjects: Demersal Fisheries
Divisions: CMFRI-Cochin > Marine Capture > Demersal Fisheries
Subject Areas > CMFRI Brochures > CMFRI-Cochin > Marine Capture > Demersal Fisheries
Depositing User: Dr. V Mohan
Date Deposited: 26 Mar 2010 07:04
Last Modified: 09 Sep 2015 15:06
URI: http://eprints.cmfri.org.in/id/eprint/266

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