...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Animal biology >Reproductive aspects and adaptive relative growth of the tropical crab Goniopsis cruentata
【24h】

Reproductive aspects and adaptive relative growth of the tropical crab Goniopsis cruentata

机译：热带蟹Gornopsis cruentata的繁殖方面和适应性相对生长

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

The knowledge of reproductive traits is essential to the comprehension of the evolution of life history and population dynamics of a species. Here, we evaluate morphological maturity, relative growth, fecundity, relationship between size and fecundity, brood loss, and seasonal variation of brood size in the crab Goniopsis cruentata. Crabs were collected during a period of one year in a tropical mangrove, Northeast Brazil. Males matured at smaller sizes than females. Compared to other studies, this result indicates that there appears to be no pattern of sexual maturity between the sexes in this species, with both sexes maturing earlier or later. The relative growth of the gonopod length (males) and abdomen width and length (males and females) is clearly related to different sex roles, i.e., incubating eggs in females and maximizing the number of mates in males. Fecundity increased with female size and was similar to the fecundity of previous studies with the same species. Egg number of females incubating early-stage eggs was higher than those incubating late-stage eggs, indicating loss of eggs during embryogenesis. Fecundity of females occurring in the dry season was higher than that of females occurring in the rainy season, indicating seasonal variation of brood size.
机译：生殖特征的知识对于理解物种的生活史和种群动态至关重要。在这里，我们评估了蟹形变色龙的形态成熟度，相对生长，繁殖力，大小与繁殖力之间的关系，亲鱼损失以及亲鱼大小的季节性变化。在一年的时间内，在巴西东北部的一个热带红树林中收集了螃蟹。雄性比雌性成熟。与其他研究相比，该结果表明，该物种中的性别之间似乎没有性成熟的模式，而这两个性别都早于或晚于成熟。生殖脚长（雄性）和腹部宽度和长度（雄性和雌性）的相对增长显然与不同的性别角色有关，即在雌性中孵化卵并最大化雄性中的交配数量。繁殖力随着雌性大小的增加而增加，这与以前相同物种的研究的繁殖力相似。孵化早期卵的雌性卵数量高于孵化晚期卵的雌性卵数量，表明胚胎发生过程中卵的损失。旱季的雌性繁殖力高于雨季的雌性繁殖力，这表明育雏量随季节变化。

著录项

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