SPATIAL VARIATION IN GROWTH AND MORTALITY PARAMETERS OF THE MARBLED PARROTFISH, LEPTOSCARUS VAIGIENSIS ON VARIABLY PROTECTED REEFS IN KENYA

Show simple item record

dc.contributor.author Locham, A. G
dc.contributor.author Kaunda-Arara, B
dc.contributor.author Wakibia, JG
dc.contributor.author Muya, S
dc.date.accessioned 2017-06-22T11:32:59Z
dc.date.available 2017-06-22T11:32:59Z
dc.date.issued 2017-06-22
dc.identifier.isbn 9966 923 28 4
dc.identifier.uri http://journals.jkuat.ac.ke/index.php/jscp/article/view/1245
dc.identifier.uri http://hdl.handle.net/123456789/3358
dc.description.abstract Growth and mortality variations of Leptoscarus vaigiensis was studied among six reef sites exposed to different fishing pressure in coastal Kenya in order to test the hypothesis of phenotypic plasticity. Monthly fish samples were obtained from marine parks (protected no-take areas), marine reserves (partially protected areas) and non-protected reefs from May 2011 to April 2013, and were measured for total lengths (cm) and body weights (g). Growth (K, L∞) and mortality (Z, M, F) parameters of the species were determined using the ELEFAN I program and compared between sites. Results showed higher asymptotic length (L∞) estimate (~ 31 cm) for parrotfish from a reserve site and lowest estimate (26-27 cm) from a marine park site. Fish from park sites had equal but lowest growth rates (K yr-1) of 0.46 compared to 1.73 ± 0.11 and 1.36 ± 0.84 for fish from park and reserve sites, respectively. Total mortality estimates (Z yr-1) were lower for protected areas (1.69-1.96) and higher for reserve (2.87-9.15) and non-protected (4.39-5.30) sites. This study showed divergence of growth parameters of a coral reef fish exposed to different levels of fishing pressure, thereby providing insights into the possibility of utilizing the parameters as indicators of environmental stress. en_US
dc.description.sponsorship JKUAT en_US
dc.language.iso en en_US
dc.publisher JKUAT en_US
dc.relation.ispartofseries Proceedings of the 2015 JKUAT Scientific Technological and Industrialization Conference;No 1 (2015)
dc.subject Fishing pressure en_US
dc.subject marine protected areas en_US
dc.subject phenotypic plasticity en_US
dc.subject resilience en_US
dc.subject JKUAT en_US
dc.subject Kenya en_US
dc.title SPATIAL VARIATION IN GROWTH AND MORTALITY PARAMETERS OF THE MARBLED PARROTFISH, LEPTOSCARUS VAIGIENSIS ON VARIABLY PROTECTED REEFS IN KENYA en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search Repository


Browse

My Account