Vol. 2, Issue 8 (2015)
Aspects of the Reproductive Strategy of Pseudotolithus Elongatus (Teleostei: Sciaenidae) in the Cross River Estuary, Nigeria
Author(s): Isangedighi I A, Ambrose EE
Abstract: Spawning and fecundity of Pseudotolithus elongatus were studied in the Cross River estuary, Nigeria. Spawning periodicity was based on the presence of ripe and running oocytes in each month. Fecundity was determined by weighing and subsampling. Breeding reached maximum during the dry season (December - February) and during the rains (July and August). Mean absolute fecundity was 90,519 + 59,310 eggs (range 38,500 – 226,720). It increased with fish standard/total length, total weight and ovary weight. The observed a-seasonality in breeding ensures the continuous replacement of individuals removed by heavy fishing pressure and other causes of mortality. Both the breeding pattern and the fecundity dynamics of P. elongatus are strategies adopted to enhance the optimization of its reproductive success.