...
首页> 外文期刊>Journal of Parasitology >FIRST FRESHWATER BOTHRIOCEPHALIDEAN (CESTODA) FROM TROPICAL SOUTH AMERICA, CLOSELY RELATED TO AFRICAN TAXA
【24h】

FIRST FRESHWATER BOTHRIOCEPHALIDEAN (CESTODA) FROM TROPICAL SOUTH AMERICA, CLOSELY RELATED TO AFRICAN TAXA

机译:来自热带南美洲的第一个淡水两栖球(Cestoda),与非洲分类群岛密切相关

获取原文
获取原文并翻译 | 示例
           

摘要

Regobothrium microhamulinum n. gen. and n. sp. (Bothriocephalidea: Bothriocephalidae) is proposed to accommodate a new cestode from flatfish Catathyridium jenynsii (Chabanaud, 1922) (Pleuronectiformes: Acharidae; type host) and another 3 freshwater fishes of the orders Characiformes, Cyprinodontiformes, and Siluriformes in the Neotropical Region. The new genus is placed in the Bothriocephalidae because it possesses medioventral uterine and mediodorsal genital pores and a follicular vitellarium. Regobothrium n. gen. is characterized by possessing a tiny, slightly subovate scolex narrower than the strobila, with an apical disc armed with 2 semicircles of 15-17 tiny hooks in each and an acraspedote strobila. Regobothrium n. gen. differs from all bothriocephalid cestodes that have a scolex armed with hooks by their small size (maximum length less than 20 mu m) and a triangular shape with the basal part (handle or basal plate) shorter than the distal coniform part (blade). In the other hooked bothriocephalids, hooks have a longer handle than a blade. Regobothrium microhamulinum n. gen. and n. sp. is the third bothriocephalidean cestode described from freshwater teleosts in South America but the first out of Patagonia. Molecular phylogenetics consider Regobothrium as a member of a lineage consisting of (up to now exclusively) freshwater bothriocephalids from the Ethiopian biogeographic region, thus indicating Gondwanan relationship.
机译:Regobothrium microhamulinum n.gen.和n.sp.(肉头目:肉头科)拟用于容纳新热带地区哲氏扁鳃亚目(Catathytridium jenysii,Chabanaud,1922)中的一种新绦虫(胸膜连接性目:Acharidae;类型宿主)和另外3种淡水鱼,分别属于Characiformes目、Cyprinodontiformes目和Siluriformes目。这个新属被归为牛头蛇科,因为它拥有子宫中腔和中鼻生殖孔以及卵泡卵黄囊。Regobrothrium n.gen.的特征是拥有一个比strobila窄的微小的、略近卵形的头节,顶端盘上有两个半圆,每个半圆上有15-17个小钩,以及一个顶生的strobila。Regobrothrium n.gen.与所有头状绦虫不同,头状绦虫的头节上有钩,其大小较小(最大长度小于20μm),呈三角形,其基部(柄或基板)比远端锥形部分(叶片)短。在另一种钩状的双头类动物中,钩的柄比刃长。Regobrothrium microhamulinum n.gen.和n.sp.是南美洲淡水硬骨鱼中描述的第三种肉毒头绦虫,但却是巴塔哥尼亚的第一种。分子系统学认为ReoBOSRIZUM是由埃塞俄比亚生物地理区(迄今为止唯一)淡水Bo蓟头目动物组成的谱系中的一员,从而指示冈瓦纳的关系。

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