Advertisement

Marine Biology

, Volume 136, Issue 5, pp 921–930 | Cite as

Growth of the scyllarid lobsters Ibacus peronii and I. chacei

  • J. Stewart
  • S. J. Kennelly

Abstract

The growth rates of the morphologically similar scyllarid lobsters Ibacus peronii (Leach, 1815) and I. chacei (Brown and Holthuis, 1998) are described using data from a tag/recapture study and from tagged lobsters kept in captivity. Within particular size classes, we found no differences in moult increments between male and female I. peronii nor between male and female I. chacei. Small individuals of both species always had larger moult increments than larger individuals. For I. peronii, females moulted more frequently than males, and smaller size classes moulted more frequently than larger size classes. Female I. peronii therefore grew more quickly than males and reached their estimated size at sexual maturity (51 mm carapace length) after ∼2 yr. Moulting of I. peronii was seasonal, with most lobsters (96.3%) moulting between October and January. We found no differences in growth rates of I. peronii at two locations along the east coast of Australia: Coffs Harbour in New South Wales (30°18′S; 153°08′E), and Lakes Entrance in Victoria (37°53′S; 148°00′E). For I. chacei, we found no differences in the frequency of moulting between males and females and, because we also found no differences in the moult increments between males and females, the growth rates of both sexes were the same.

Keywords

Growth Rate Size Classis East Coast Sexual Maturity Large Individual 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • J. Stewart
    • 1
  • S. J. Kennelly
    • 2
  1. 1.New South Wales Fisheries Research Institute, P.O. Box 21, Cronulla, New South Wales 2230, Australia Fax: 0061 (0) 29527 8576 e-mail: stewartj@fisheries.nsw.gov.auAU
  2. 2.Centre for Research on Ecological Impacts of Coastal Cities, Marine Ecology laboratories, A11, University of Sydney, New South Wales 2006, AustraliaAU

Personalised recommendations