LARVAL PERIOD AND ITS INFLUENCE ON POSTLARVAL LIFE-HISTORY - COMPARISON OF LECITHOTROPHY AND FACULTATIVE PLANKTOTROPHY IN THE AEOLID NUDIBRANCH PHESTILLA-SIBOGAE

被引：53
作者：
MILLER, SE
机构：
[1] Pacific Biomedical Research Center, Kewalo Marine Laboratory, University of Hawaii, Honolulu, 96813, Hawaii
来源：
MARINE BIOLOGY | 1993年 / 117卷 / 04期
关键词：
D O I：
10.1007/BF00349776
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
The variable duration of the pelagic phase of metamorphically competent larvae of benthic marine invertebrates is set by an interaction between environmental factors and larval traits that together influence the chance that a larva will encounter and respond to a suitable settlement site. In the Hawaiian aeolid nudibranch Phestilla sibogae Bergh, an extended competent larval phase resulted in a cascade of negative effects on larval and post-larval life-history traits. When raised as fed (i.e., facultatively planktotrophic) larvae, an extended larval period resulted in lower larval survival, slightly lower metamorphic success, and delayed reproduction. When raised as unfed (i.e., lecithotrophic) larvae, an extended larval period resulted in lower larval and post-larval weights, survival, metamorphic success, and reproductive output, and also resulted in a longer juvenile period and delayed reproduction. The chance nature of locating a settlement site generally spreads these negative effects over all larvae of a cohort, and so balances the relative fitness of the genetic lineages within a population.
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页码：635 / 645
页数：11
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