Larval life span, larval settlement, and early growth ofEvechinus chloroticus(Valenciennes)
作者:
M. M. Walker,
期刊:
New Zealand Journal of Marine and Freshwater Research
(Taylor Available online 1984)
卷期:
Volume 18,
issue 4
页码: 393-397
ISSN:0028-8330
年代: 1984
DOI:10.1080/00288330.1984.9516060
出版商: Taylor & Francis Group
关键词: Evechinus chloroticus;sea urchins;larvae;recruitment;metamorphosis;growth;spawning;populations
数据来源: Taylor
摘要:
Development, settlement, and subsequent metamorphosis on several substrata were observed in cultures ofEvechinus chloroticuslarvae. The period from fertilisation to metamorphosis ranged between 30 and 63 days for larvae collected from spawnings induced at 3 different times. Newly settled sea urchins collected from the field grew about 1 mm per month in aquaria. Correlation of the larval life span with the growth rate of newly settled sea urchins suggested that the earliest spawning could occur was mid‐November. This finding corroborates the results of previous histo‐logical studies of the gonads of adult sea urchins in the Hauraki Gulf, New Zealand.
点击下载:
PDF (788KB)
返 回