Suckers (Family Catostomidae) are holarctic in distribution and include 76 recent species in 14 genera, with 13 genera and 75 species occurring in North and Central America and Siberia. Although this group constitutes a significant component of many aquatic ecosystems, most historic systematic effort has been either alpha- or limited beta-level studies focusing on the two largest tribes within the family, the Catostomini and the Moxostomatini. A recent phylogenetic study based on morphological, biochemical, and early life history characters has advanced current understanding of relationships among catostomid fishes. To further examine phylogenetic relationships among basal lineages of catostomids, we sequenced the entire mitochondrial (mt) SSU and LSU rRNA genes from genera representing all subfamilies and tribes within Catostomidae. Phylogenetic analysis of gene sequences yielded monophyletic Catostomidae, Ictiobinae, and Catostominae and para- or polyphyletic Cycleptinae, with Myxocyprinus as the basal-most taxon and Cycleptus as either the next most-basal taxon or the taxon basal to the Catostominae. Relationships within the Catostominae were generally consistent with those proposed in the above-noted recent phylogenetic study although Thoburnia and Hypentelium were either a clade sister to or a grade group relative to Moxostoma and Scartomyzon. In all trees, Scartomyzon was paraphyletic and embedded within Moxostoma. Phylogenetic affinities of Erimyzon and Minytrema varied depending on data set and character weighting scheme employed. To better reflect phylogenetic relationships resolved in this extensive analysis, we propose the following changes to the classification of catostomids: formation of the new subfamily Myxocyprininae, containing Myxocyprinus from China; restriction of the Cycleptinae to the two species of Cycleptus from North America; restriction of the tribe Moxostomatini to Moxostoma and Scartomyzon; Erimyzon and Minytrema are incertae sedis within Catostominae; and resurrection of the tribe Thoburniini, containing Thoburnia and expanded to include Hypentelium.

译文

:吸盘(Catastomidae科)分布呈甲状,包括14属中的76个近来种,其中13属和75种在北美洲,中美洲和西伯利亚。尽管该群体构成了许多水生生态系统的重要组成部分,但历史上最系统的研究还是集中于该家族中两个最大的部落Catostomini和Moxostomatini的alpha或有限的beta级研究。最近一项基于形态,生化和早期生命史特征的系统发育研究,已使目前对Catastomid鱼类之间的关系有了更深入的了解。为了进一步检查基础物种之间的系统发育关系,我们对整个线粒体(mt)SSU和LSU rRNA基因进行了测序,该基因来自代表该科的所有亚科和部落。基因序列的系统发育分析产生了单系的Catastomidae,Ictiobinae和Catostominae以及近系或多系的Cycleptina,其中粘液丝藻是最基础的分类群,而Cycleptus则是下一个最基础的分类群或基础的分类群。尽管Thoburnia和Hypentelium是Moxostoma和Scartomyzon的进化分支姐妹或等级组,但Catostotomae内的关系通常与上述最近的系统发育研究中提出的关系一致。在所有树木中,Scartomyzon具有共生能力,并嵌入到Moxostoma中。 Erimyzon和Minytrema的系统发生亲和力取决于数据集和使用的字符加权方案。为了更好地反映在广泛分析中解决的系统发育关系,我们建议对catostomids的分类进行以下更改:形成一个新的亚家族Myxocyprininae,该亚家族包含来自中国的Myxocyprinus。将Cycleptinae限制于来自北美的两种Cycleptus。 Moxostomatini部落对Moxostoma和Scartomyzon的限制; Erimyzon和Minytrema是Catostominae中的不动产。托本(Thoburniini)部落的复活,其中包括托本(Thoburnia),并扩大到包括Hypentelium。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录