Do large rock lobsters inhibit smaller ones from entering traps?
A field experiment Thomas F. Ihde A C, Stewart D. Frusher B, John M. Hoenig A A Virginia Institute of Marine Science, College of William and Mary, PO Box 1346, Gloucester Point, Virginia 23062, USA. B Tasmanian Aquaculture and Fisheries Institute, University of Tasmania, GPO Box 252-49, Hobart, Tasmania, Australia 7001. C Corresponding author. Email: tihde@vims.edu Abstract Indices of recruitment are often derived from trap surveys. If legal-sized lobsters inhibit smaller ones from entering traps, the overall catch-rate may depend on population composition and not just on overall abundance, and recruitment strength can be overestimated as average length decreases in a population. A controlled field experiment was used to examine whether trapping inhibition of Jasus edwardsii occurred during spring (November) or summer (February) in south-eastern Tasmania. Four treatments were applied. Baited traps were seeded with either: one large female, one large male or two sublegal-sized female lo
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