Size-dependent natural mortality of juvenile banana prawns Penaeus merguiensis in the Gulf of Carpentaria, Australia

Wang, Y-G. & Haywood, M. D. E. (1999) Size-dependent natural mortality of juvenile banana prawns Penaeus merguiensis in the Gulf of Carpentaria, Australia. Marine and Freshwater Research, 50(4), pp. 313-317.

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Natural mortality of marine invertebrates is often very high in the early life history stages and decreases in later stages. The possible size-dependent mortality of juvenile banana prawns, P. merguiensis (2-15 mm carapace length) in the Gulf of Carpentaria was investigated. The analysis was based on the data collected at 2-weekly intervals by beam trawls at four sites over a period of six years (between September 1986 and March 1992). It was assumed that mortality was a parametric function of size, rather than a constant. Another complication in estimating mortality for juvenile banana prawns is that a significant proportion of the population emigrates from the study area each year. This effect was accounted for by incorporating the size-frequency pattern of the emigrants in the analysis. Both the extra parameter in the model required to describe the size dependence of mortality, and that used to account for emigration were found to be significantly different from zero, and the instantaneous mortality rate declined from 0.89 week(-1) for 2 mm prawns to 0.02 week(-1) for 15 mm prawns.

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10 citations in Scopus
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11 citations in Web of Science®

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ID Code: 90500
Item Type: Journal Article
Refereed: Yes
Additional Information: ISI Document Delivery No.: 193VX
Times Cited: 11
Cited Reference Count: 25
Wang, YG Haywood, MDE
C s i r o publishing
Keywords: tiger prawns, mangrove estuary, recruitment, predation, esculentus, postlarval, survival, dynamics, growth, fishes
DOI: 10.1071/mf97229
ISSN: 1323-1650
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: © CSIRO Australia 1999
Deposited On: 18 Nov 2015 02:00
Last Modified: 18 Nov 2015 02:00

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