摘要
1985年5月至1986年5月及1987年5月5日和15日,对威海小石岛马粪海胆的生态进行了调查。调查结果表明,小石岛马粪海胆多栖息在藻类繁茂的礁石及其下面杂有砂砾的海底。3令即长到商品规格(壳径≥30mm)。4月底生殖腺指数达到最高值20%左右,5月初当海水温度升到10~12℃时,多数个体开始排放,进入生殖期。
An ecological study of the sea urchin Hemicentrotus pulcherrimus was carriedout in Shaoshidao, weihai, Shandong Province from May 1985 to May 1986 andMay 5 to 15, 1987. The results show that Hemicentrotus pulcherrimus is a very stric tly littoral species on rocky shore, mostly living under stone in the ebb-zone, wherethe algae and sea-grass are abundant; it takes three years to grow up the comme-rcial size(> = 30mm in diameter); the gonad index may reach the maximum value,some 20%, late in April; early in May, as the water temperature raises to 10-12℃, it enters the breeding seasoll.
出处
《海洋湖沼通报》
CSCD
北大核心
1995年第2期37-42,共6页
Transactions of Oceanology and Limnology
关键词
马粪海胆
生态
海胆
Hemicentrotus pulcherrimus, ecology