Growth and age determination of the tropical Australian cubozoan Chiropsalmus sp.

Gordon, M., Hatcher, C., and Seymour, J. (2004) Growth and age determination of the tropical Australian cubozoan Chiropsalmus sp. Hydrobiologia, 530 (1). pp. 339-345.

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Abstract

Chiropsalmus sp. medusae collected in this study ranged from 3 to 71 mm diagonal bell width and displayed growth best described by the following equation size (mm) = 74.9 × exp (−exp(0.041 (time since metamorphosis (day) −35.6674))). Growth rates of up to 7 mm week−1 increase in diagonal bell width are theoretically possible, with animals able to reach sexual maturity in approximately 70 days. Correlation of the number of rings on the statoliths with the predicted age of the individual from the field produced a relationship that indicates the growth rings are laid down daily and as such could be used to infer age of the medusae. Over the 1998–1999 season, there were four influxes of juvenile cohorts, each occurring approximately 14 days after a major rainfall event.

Item ID: 4500
Item Type: Article (Refereed Research - C1)
Keywords: Cubozoa; Gompertz growth curve; statolith
ISSN: 1573-5117
Date Deposited: 11 Jun 2009 01:21
FoR Codes: 06 BIOLOGICAL SCIENCES > 0608 Zoology > 060808 Invertebrate Biology @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960806 Forest and Woodlands Flora, Fauna and Biodiversity @ 100%
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