Measuring depth of settlement in the red rock lobster,Jasus edwardsii
作者:
JohnD. Booth,
AndrewD. Carruthers,
ColinD. Bolt,
RobertA. Stewart,
期刊:
New Zealand Journal of Marine and Freshwater Research
(Taylor Available online 1991)
卷期:
Volume 25,
issue 2
页码: 123-132
ISSN:0028-8330
年代: 1991
DOI:10.1080/00288330.1991.9516462
出版商: Taylor & Francis Group
关键词: rock lobster;Jasus edwardsii;Palinuridae;New Zealand;puerulus;settlement;larval recruitment
数据来源: Taylor
摘要:
Settlement of the puerulus stage ofJasus edwardsii(Decapoda: Palinuridae) near the shore takes place over a wide depth range. It occurs intertidally, and, as determined by crevice collectors, also takes place down to depths of at least 50 m. At sites along the east coast of the North Island of New Zealand, depth of greatest settlement found on collectors varied with locality and time, but was within the upper 11.5 m. Surface‐buoyed collectors caught fewer animals than did collectors at greater depths. Settlement levels generally increased with depth to about 10–12 m, then decreased with increasing depth and distance from shore. The ability of/,edwardsiito settle over a wide depth range may improve its chances of recruitment. A device (closing crevice collector) for measuring puerulus settlement ofJ. edwardsiiat depth is described.
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