The evolution of developmental strategy in marine invertebrates.

The evolution of developmental strategy in marine invertebrates.
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海洋无脊椎动物发育策略的演变。

DOI:
10.1016/0169-5347(91)90121-d
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发表时间:
1991
影响因子:
16.8
通讯作者:
R. Raff
R. Raff
中科院分区:
生物学1区
文献类型:
--
作者:
G. Wray;R. Raff

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在大多数动物门中,发育模式差异很大。这些发展策略的差异对密切相关物种的生态和进化产生了深远的影响。个体发育中导致发育模式转换的机械性改变正受到越来越多的关注。在这方面,海胆是一个被Gestunderstood的群体。在直接发育的棘球蚴中的平行修饰指出了卵子发生和胚胎发生中的一些关键变化,这些变化产生发育模式的转换。许多动物生活史的一个显着特征是存在与成虫不同的摄食幼虫阶段。后生动物幼虫形式的广泛多样性是对繁殖和扩散挑战的回应。以喂养幼虫为基础的发育策略允许生物体通过将发育的营养负担放在下一代身上来产生大量后代。虽然这种间接的发展模式在动物中很普遍,但大多数分支也包含缺乏喂养幼虫而直接发展的物种。在海洋无脊椎动物中,发育模式对个体生态学、选择模式以及物种形成和灭绝的速度有重要影响3 -5。具有非营养、间接发育的物种产生大量配子,并产生能够广泛散布的幼虫14,5。广泛的分布增加了一些幼虫找到合适的机会
Developmental mode varies widely in most animal phyla. These differences in developmental strategy exert a profound influence on the ecology and evolution of closely related species. The mechanistic ulterations in ontogeny that lead to switches in developmental mode are coming under increasing scrutiny. Echinoids are one of the Gestunderstood groups in this regard. Parallel modifications in direct-developing echinoids point to some of the key changes in oogenesis and embryogenesis that produce switches in developmental mode.A remarkable feature of many animal life histories is the presence of a feeding larval stage that is morphologically distinct from the adult. The wide diversity of metazoan larval forms is a response to the challenges of reproduction and dispersal. A developmental strategy based on feeding larvae permits an organism to produce numerous offspring by placing the nutritional burden of development on the next generation. Although this indirect mode of development is widespread among animals, most clades also contain species that lack feeding larvae and instead undergo direct development’,*. Among marine invertebrates, developmental mode has an important influence on autecology, modes of selection, and rates of speciation and extinction3-5. Species with planktotrophic, indirect development spawn prodigious numbers of gametes and produce larvae capable of wide dispersa14, 5. Broad distribution increases the chance that some larvae will find suitable
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DOI: 10.1016/0012-1606(90)90100-w
发表时间: 1990
影响因子: 2.7
作者:
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通讯作者: Raff,RA
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DOI: 10.1016/0012-1606(89)90242-x
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影响因子: 2.7
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影响因子: 2.7
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影响因子: 10.7
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