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Female Reproductive Biology and Spawning Periodicity of Two Species of King Prawns, Penaeus longistylus Kubo and Penaeus latisulcatus Kishinouye, from Queensland's East Coast Fishery

Courtney, A.J. and Dredge, M.C.L. (1988) Female Reproductive Biology and Spawning Periodicity of Two Species of King Prawns, Penaeus longistylus Kubo and Penaeus latisulcatus Kishinouye, from Queensland's East Coast Fishery. Australian Journal of Marine and Freshwater Research, 39 (6). pp. 729-741.

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Article Link(s): http://dx.doi.org/10.1071/MF9880729

Publisher URL: http://www.publish.csiro.au

Abstract

In the coastal region of central Queensland female red-spot king prawns, P. longistylus, and the western or blue-leg king prawns, P. latisulcatus, had high mean ovary weights and high proportions of advanced ovary development during the winter months of July and August of 1985 and 1986. On the basis of insemination, both species began copulating at the size of 26-27 mm CL, but P. longistylus matured and spawned at a smaller size than P. latisulcatus. Abundance of P. longistylus was generally three to four times greater than that of P. latisulcatus but the latter was subject to greater variation in abundance. Low mean ovary weight and low proportions of females with advanced ovaries were associated with the maximum mean bottom sea-water temperature (28.5ºC) for both species.
Population fecundity indices indicated that peaks in yolk or egg production (a) displayed a similar pattern for both species, (b) varied in timing from year to year for both species and (c) were strongly influenced by abundance. Generally, sample estimates of abundance and commercial catch rates (CPUE) showed similar trends. Differences between the two may have been due to changes in targeted commercial effort in this multi-species fishery.

Item Type:Article
Additional Information:Reproduced with permission from © CSIRO Publishing. Access to published version may be available via Publisher’s website.
Keywords:Red-spot king prawn; Penaeus longistylus Kubo; western king prawn; blue-leg king prawn; Penaeus latisulcatus Kishinouye; spawning.
Subjects:Aquaculture and Fisheries > Fisheries > Fishery for individual species
Aquaculture and Fisheries > Fisheries > By region or country
Deposited On:17 Jun 2004
Last Modified:07 Sep 2010 00:20

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