Juvenile population dynamics of Oreochromis mossambicus in an intermittently open estuary at the limit of its natural distribution

Ellender, Bruce R; Weyl, Olaf L F; Shanyengange, M K; Cowley, Paul D

Title: Juvenile population dynamics of Oreochromis mossambicus in an intermittently open estuary at the limit of its natural distribution
Creator: Ellender, Bruce R
Creator: Weyl, Olaf L F
Creator: Shanyengange, M K
Creator: Cowley, Paul D
Subject: To be catalogued
Date Issued: 2008
Date: 2008
Type: text
Type: article
Identifier: http://hdl.handle.net/10962/446893
Identifier: vital:74568
Identifier: https://doi.org/10.1080/15627020.2008.11657245
Description: Juvenile Oreochromis mossambicus in the 25 ha, temperate, intermittently open, East Kleinemonde Estuary in the Eastern Cape, South Africa (33°32’S, 27°03’E), showed a seasonal shift in distribution, occupying all areas of the estuary in summer and, subsequently, being limited to the upper reaches in winter. The young of the year in the littoral zone were rapidly depleted and resultant estimates of the instantaneous rate of total mortality (Z) ranged from 5.4/yr to 6.9/yr. High annual rates of juvenile mortality and small adult populations imply that stock recovery after a reduction in adult population numbers, through activities such as fishing, may be slow. This work adds to the knowledge base of O. mossambicus ecology and population dynamics in temperate estuaries at the limit of its natural distribution.
Format: 7 pages
Format: pdf
Language: English
Relation: African Zoology
Relation: Ellender, B.R., Weyl, O.L.F., Shanyengange, M.K. and Cowley, P.D., 2008. Juvenile population dynamics of Oreochromis mossambicus in an intermittently open estuary at the limit of its natural distribution. African Zoology, 43(2), pp.277-283
Relation: African Zoology volume 43 number 2 277 283 2008 2224-073X
Rights: Publisher
Rights: Use of this resource is governed by the terms and conditions of the Taylor and Francis Online Terms and Conditions Statement (https://www.tandfonline.com/terms-and-conditions)

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Weyl, Olaf L F (Prof)

Cowley, Paul Denfer (Prof)

RU Department of Ichthyology and Fisheries Science

SDG 14. Life Below Water

RU South African Institute for Aquatic Biodiversity (SAIAB)

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