Tang Danny, Newbound Dennyse R
School of Animal Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
Syst Parasitol. 2004 May;58(1):69-80. doi: 10.1023/B:SYPA.0000023853.90011.17.
A new species of sea-louse (Caligidae, Siphonostomatoida), Caligus oculicola n. sp., is described from the eye surface of the tiger shark Galeocerdo cuvier from off the northwestern coast of Australia. This copepod is distinguished from its congeners by a combination of characters that include: (i) a bifid, dentiform process of the maxillule; (ii) a sternal furca with a box longer than wide and diverging, truncate tines; (iii) terminal spines 1 to 3 on the last segment of leg 1 exopod, each with serrate margins and an accessory process (accessory process on the spines extending beyond the tip of the spine itself); and (iv) a two-segmented exopod of leg 4 with an armature formula of I-0; III. This is the first description of a caligid copepod collected from a shark host in Western Australian waters. The host-parasite relationships between Caligus oculicola and its elasmobranch host are discussed.
描述了一种来自澳大利亚西北海岸虎鲨（居氏鼬鲨）眼表面的新海虱物种（锚头鱼虱科，管吻水蚤目）——眼栖锚头鱼虱（Caligus oculicola n. sp.）。这种桡足类动物与同属其他物种的区别在于具有以下一系列特征组合：（i）小颚有双叉形齿状突起；（ii）胸骨叉，其盒状结构长大于宽，叉尖分开且截形；（iii）第1对步足外肢最后一节上有1至3根端刺，每根刺边缘有锯齿且有一个附属突起（刺上的附属突起延伸超过刺本身的尖端）；（iv）第4对步足的外肢分两节，其武装模式为I - 0；III。这是首次对在西澳大利亚水域从鲨鱼宿主采集到的锚头鱼虱科桡足类动物进行描述。文中还讨论了眼栖锚头鱼虱与其板鳃亚纲宿主之间的宿主 - 寄生虫关系。
