Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.
Zoology Department, Faculty of Science, Cairo University, Cairo, Egypt.
Microsc Res Tech. 2020 Nov;83(11):1369-1380. doi: 10.1002/jemt.23528. Epub 2020 Jul 12.
Copepods are a common component of ectoparasite assemblages of all kinds of fish, from all environments and ecosystems. In the present investigation, a total of 80 specimens of the rosy goatfish Parupeneus rubescens were randomly collected from the Arabian Gulf, and then transported to the laboratory in order to be dissected and examined for the presence of copepodid infections. Copepod parasites were recovered from the gills of the infected fish. One copepod species within the Caligidae family was identified and labeled as Caligus elongates von Nordmann, 1832. This copepod species examined using light and scanning electron microscopy to observe the most characteristic generic features. Morphological and morphometric characterizations revealed differences between the identified species and other related copepodid species. Therefore, the present study showed that the rosy goatfish is a new host for this Caligus species and added a new locality record for this infection.
桡足类是各种鱼类外寄生虫组合的常见组成部分，来自各种环境和生态系统。在本研究中，总共从阿拉伯湾随机采集了 80 个红鲷 Parupeneus rubescens 的样本，然后将它们运送到实验室进行解剖检查，以确定是否存在桡足类幼虫感染。桡足类寄生虫从受感染鱼类的鳃中回收。在 Caligidae 科中鉴定出一种桡足类，并标记为 Caligus elongates von Nordmann, 1832。使用光镜和扫描电子显微镜检查这种桡足类，以观察最具特征的属特征。形态学和形态计量学特征表明，所鉴定的物种与其他相关桡足类幼虫物种之间存在差异。因此，本研究表明，红鲷是这种 Caligus 物种的新宿主，并为这种感染增加了一个新的地点记录。
