ISSN:
1573-5117
Keywords:
Breeding biology
;
Sierrathrissa leonensis
;
Pellonula afzeliusi
;
sexual dimorphism
;
fecundity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Aspects of the reproductive biology of the two species of clupeids known to occur in Lake Kainji, Pellonula afzeliusi Johnels and Sierrathrissa leonensis Thys Van Den Audenaerde were studied for a period of twenty eight months. Mature individuals were found in both species all the year round but with a prolonged peak of activity from December to May, more distinct in P. afzeliusi than in S. leonensis. There were no significant length differences between mature males and females in both species. The smallest mature individuals were 28 mm standard length female; 27 mm standard length male in P. afzeliusi, while the corresponding figures for S. leonensis were 18 mm standard length female and 19 mm standard length male. No sexual dimorphism was observed. There was a simple correlation between fecundity and fish standard body length as well as weight in both species.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00018741
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