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首页> 外文期刊>Marine biology >Where are larvae of the vermetid gastropod Dendropoma maximum on the continuum of larval nutritional strategies?
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Where are larvae of the vermetid gastropod Dendropoma maximum on the continuum of larval nutritional strategies?

机译：在幼虫营养策略的连续统上，全腹足纲树突状瘤的幼虫在哪里最大？

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摘要

This study evaluated whether larvae of the Indo-Pacific vermetid gastropod Dendropoma maximum are obligate planktotrophs, or whether they exhibit an intermediate feeding strategy. Experiments were conducted in Moorea, French Polynesia (149°50'W, 17°30'S), Sep-Oct 2009, to examine D. maximum larval growth and metamorphic responses to different diets and amounts of food. Dendropoma maximum larvae required particulate food to undergo metamorphosis, but were able to survive and grow in the absence of food for up to 20 days. Larvae in Low and Unfed food treatments exhibited phenotypic plasticity by growing a larger velum (the larval feeding structure) compared with those in high food. Unfed D. maximum larvae had a slower initial growth rate; however, by 11-day post-hatch fed and unfed larvae had converged on the same mean shell height (553 μm), which was only 10% larger than the initial size at hatching. Therefore, although the nutritional strategy of D. maximum larvae is best described as obligate planktotrophy, it appears to approach an intermediate feeding strategy.
机译：这项研究评估了印度太平洋一类的准腹足动物登革蝇最大的幼虫是否是专性浮游生物，或者它们是否表现出中等的摄食策略。 2009年9月10日在法属波利尼西亚的莫雷阿岛（149°50'W，17°30'S）进行了实验，以检查D.最大幼虫生长和对不同饮食和食物量的变态反应。 dendropoma的最大幼虫需要颗粒食物进行变态，但能够在没有食物的情况下存活并生长长达20天。与高食物相比，低食物和未进食食物处理中的幼虫表现出表型可塑性，因为它会长出更大的天鹅绒（幼虫的进食结构）。未喂食的D.最大幼虫的初始生长速度较慢；然而，到孵化后第11天，喂食和未喂食的幼虫会聚在相同的平均壳高（553μm）上，仅比孵化时的初始大小高10％。因此，尽管最佳描述了D.max。d。最大幼虫的营养策略为专性浮游植物，但它似乎是一种中间喂养策略。

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  • 来源
    《Marine biology》 |2011年第10期|p.2335-2342|共8页
  • 作者

    Nicole E. Phillips;

  • 作者单位

    Victoria University Coastal Ecology Laboratory and School of Biological Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand;

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