Distribution patterns of spawning stock of hake maturity stages in the Benguela ecosystem of Namibia
Journal Title: Journal of Research in Ecology - Year 2015, Vol 2, Issue 2
Abstract
Distribution of maturity stages within populations of M. capensis and M. paradoxus were investigated along the Namibian coast between 17 – 28°S latitudes and within 100 m to 600 m water depths. Sampling was conducted in summer, during the period of January-February 2012 with a bottom trawl on board the MFV Blue Sea research vessel. A total of 217 stations along the coast were sampled targeting the two species of hake. Results indicated significant differences in the distribution of active stage of M. capensis and in the ripe and running, ripe and inactive stages for M. paradoxus with regard to latitude. Whilst for depths significant differences were only observed in ripe, ripe and running maturity stages for M. capensis and the inactive stage for M. paradoxus. Maturity stages distribution between the two species differs significantly in the active stage with regard to latitude and in the active and inactive stages with regard to depth. There exists fluctuation in maturity stages of the two hake species and this can be due to feeding behavior, spatial distribution and differences in spawning locations
Authors and Affiliations
Nashima FP, Julies E, Samakupa A
Keywords
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