首页> 外文学位 >Phylogenetic relationships and feeding behavior of neotropical snail-eating snakes (Dipsadinae, Dipsadini).
【24h】

Phylogenetic relationships and feeding behavior of neotropical snail-eating snakes (Dipsadinae, Dipsadini).

机译:系统发育关系和食性新嗜蜗牛的蛇(Dipsadinae,Dipsadini)。

获取原文
获取原文并翻译 | 示例

摘要

The snake subfamily Dipsadinae contains more than 350 ecologically diverse species in about 32 genera. Members of the tribe Dipsadini are gastropod specialists, and many possess a suite of adaptations for eating snails. I tested chemosensory prey preference in Dipsas, Sibon and Tropidodipsas species. Additionally, I described the feeding behavior of Tropidodipsas annuliferus, T. philippii and Sibon nebulatus. All snakes preferred gastropod prey. Tropidodipsas philippii also showed strong interest in the earthworm scent and subsequently consumed earthworms. Snakes snagged or wedged snail shells on surface irregularities and extracted snails using muscular contractions of the body, representing an undescribed feeding behavior in vertebrates. I used two mitochondrial (cyt-b and ND4) and two nuclear (NT3 and DNAH3) genes totaling 3241 bp to test relationships among the Dipsadini and among dipsadine genera. Geophis is deeply nested within the Dipsadini. I synonymize Sibynomorphus with Dipsas and three Sibon species with S. dimidiatus. I identify five new genera and 11 dipsadine tribes: Diaphorolepini, Dipsadini, Leptodeirini, Nothopsini, Tribe nov. 1 ( Adelphicos + Cryophis), Tribe nov. 2 (Atractus ), Tribe nov. 3 ((Amastridium + Chapinophis ) + (Trimetopon (Coniophanes ( Rhadinaea + Urotheca)))), Tribe nov. 4 ( Chersodromus + Ninia), Tribe nov. 5 (Enuliophis + Enulius), Tribe nov. 6 (Hydromorphus + Tretanorhinus), Tribe nov. 7 (Rhadinophanes + Tantalophis). The tree topology supports the hypothesis that dipsadine snakes experienced a dietary shift and adaptive radiation.
机译:蛇亚科Dipsadinae包含约32属的350多种生态多样的物种。 Dipsadini部落的成员都是腹足动物专家,其中许多人都拥有一套改编的蜗牛食用方法。我在Dipsas,Sibon和Tropidodipsas物种中测试了化学感应猎物的偏好。此外,我还介绍了拟南芥,菲氏梭菌和西邦星云的摄食行为。所有的蛇都喜欢腹足动物的猎物。菲律宾Tropidodipsas philipii也表现出对worm气味的浓厚兴趣,并随后食用了earth。蛇在表面不规则处钩住或楔住蜗牛壳,并利用身体的肌肉收缩提取蜗牛,这代表了脊椎动物中未描述的觅食行为。我使用了两个线粒体(cyt-b和ND4)和两个核基因(NT3和DNAH3),总计3241 bp来测试Dipsadini之间和dipsadine属之间的关系。 Geophis深深地嵌套在Dipsadini中。我将Dibysas命名为Sibynomorphus,将S.dimidiatus命名为三个Sibon物种。我确定了五个新属和11个二甲双胍部落:Diaphorolepini,Dipsadini,Leptodeirini,Nothopsini,Tribe nov。 1(Adelphicos + Cryophis),部落十一月。 2(白术),部落十一月。 3((Amastridium + Chapinophis)+(Trimetopon(Coniophanes(Rhadinaea + Urotheca)))),部落十一月部落11月4日(Chersodromus + Ninia)。 5(Enuliophis + Enulius),部落。部落11月6日(Hydromorphus + Tretanorhinus)。 7(Rhadinophanes + Tantalophis)。树形拓扑支持假山蛇蛇经历饮食转变和适应性辐射的假说。

著录项

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Biology Systematic.;Biology Zoology.
  • 学位 Ph.D.
  • 年度 2012
  • 页码 136 p.
  • 总页数 136
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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