GROWTH AND SEXUAL-MATURATION OF LABORATORY-CULTURED MONTEREY BOTRYLLUS-SCHLOSSERI
GROWTH AND SEXUAL-MATURATION OF LABORATORY-CULTURED MONTEREY BOTRYLLUS-SCHLOSSERI
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DOI：
10.2307/1541383
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发表时间：
1986-02-01
影响因子：
1.6
通讯作者：
WEISSMAN, IL
中科院分区：
文献类型：
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作者：
BOYD, HC;BROWN, SK;WEISSMAN, IL
在两个独立的研究中，比较了实验室和蒙特雷码头培养的蒙特雷绿僵菌菌落的生长和性成熟情况：第一阶段- 1984年4月至7月，这是绿僵菌在田间生长迅速的时期，第二阶段- 1984年12月至1985年3月，这是田间生长最小的时期。实验室菌落保存在15度曝气过滤的静置海水罐中。C 20.度。C和24度。C;海水每天或隔天更换一次。食物类型是两种浓度的藻类混合物和五种浓度的Liquifry，这是一种商业上可获得的滤食性海洋无脊椎动物的食物。所有以藻类为食的群落都表现不佳。在第一阶段，蒙特雷码头饲养的菌落比实验室中的菌落生长得快得多，但它们达到性成熟所需的时间比在20度下生长的液体饲养的菌落要长。C，生存率较低。在II期试验中，8个实验室处理中有7个处理的Botryllus生长速率和存活率优于码头菌落。这些实验室处理产生了相当比例的性成熟菌落，而在第二阶段没有一个码头菌落产卵。
Growth and sexual maturity were compared among Monterey Botryllus schlosseri colonies cultured in the laboratory and in Monterey Marina in two separate studies: Phase I-April to July 1984, a time when Botryllus growth is rapid in the field, and Phase II-December 1984 to March 1985, a time when growth is minimal in the field. Laboratory colonies were kept in tanks of standing, aerated filtered seawater at 15.degree. C, 20.degree. C, and 24.degree. C; the seawater was changed daily or on alternate days. Food types were two concentrations of an algal mixture and five concentrations of Liquifry, a commercially available food for filter-feeding marine invertebrates. All algae-fed colonies did poorly. During Phase I, the colonies kept in Monterey Marina grew much faster than those in the laboratory, but they took longer to reach sexual maturity than the Liquifry-fed colonies grown at 20.degree. C and had a lower survivorship. In Phase II, Botryllus growth rates and survivorships in seven of the eight laboratory treatments were better than those of marina colonies. These laboratory treatments yielded a substantial proportion of sexually mature colonies, whereas none of the marina colonies produced eggs during Phase II.