...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Biological Bulletin >Morphological Variability Among Broods of First-Stage Blue Crab (Callinectes sapidus) Zoeae
【24h】

Morphological Variability Among Broods of First-Stage Blue Crab (Callinectes sapidus) Zoeae

机译：第一阶段蓝蟹族（Calloinectes Sapidus）Zoeae的形态变异性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

External morphology has been shown to influence predation and locomotion of decapod larvae and is, therefore, directly related to their ability to survive and disperse. The first goal of this study was to characterize first-stage blue crab zoeal morphology and its variability across larval broods to test whether inter-brood differences in morphology exist. The second was to identify possible correlations between maternal characteristics and zoeal morphology. The offspring of 21 individuals were hatched in the laboratory, photographed, and measured. Zoeae exhibited substantial variability, with all metrics showing significant inter-brood differences. The greatest variability was seen in the zoeal abdomen, rostrum, and dorsal spine length. A principal component analysis showed no distinct clustering of broods, with variation generally driven by larger zoeae. Using observed morphology, models of drag induced by swimming and sinking also showed significant inter-brood differences, with a maximum twofold difference across broods. In contrast to trends in other decapod taxa, maternal characteristics (female carapace width and mass and egg sponge volume and mass) are not significant predictors of zoeal morphology. These results suggest that brood effects are present across a wide range of morphological characteristics and that future experiments involving Callinectes sapidus morphology or its functionality should explicitly account for inter-brood variation. Additionally, inter-brood morphological differences may result in differential predation mortality and locomotory abilities among broods.
机译：外部形态学已经显示出影响甲板幼虫的捕食和运动，因此与其存活和分散的能力直接相关。本研究的第一个目的是在幼虫饲养上表征第一阶段的蓝蟹静脉形态及其变异性，以测试是否存在形态的间间差异。第二个是识别母体特征与动物形态之间可能的相关性。在实验室，拍摄和测量中，21个个体的后代被孵化。 Zoeae表现出大量的变化，所有指标都显示出显着的间间差异。在动物腹部，讲台和背脊周长上看到了最大的变异性。主要成分分析显示出没有不同的育雏聚类，其变异通常由较大的Zoeae驱动。使用观察到的形态，游泳和下沉引起的阻力模型也表现出显着的间歇性差异，育雏群体中的最大两倍。与其他脱像脱落区的趋势相比，母体特征（雌性甲壳宽度和质量和鸡蛋海绵体积和质量）不是Zoeal形态的显着预测因子。这些结果表明，育雏效应存在于广泛的形态特征上，并且未来涉及Calloxectessapidus形态或其功能的实验应明确占核心间变异。此外，胸部形态学差异可能导致育雏之间的差异捕食死亡率和机器人能力。

著录项

  • 来源
    《The Biological Bulletin》 |2018年第3期|共11页
  • 作者

    Caracappa Joseph C.; Munroe Daphne M.;

  • 作者单位

    Rutgers State Univ Haskin Shellfish Res Lab 6959 Miller Ave Port Norris NJ 08349 USA;

    Rutgers State Univ Haskin Shellfish Res Lab 6959 Miller Ave Port Norris NJ 08349 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物科学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号