Description of a new syllid species as a model for evolutionary research of reproduction and regeneration in annelids
Description of a new syllid species as a model for evolutionary research of reproduction and regeneration in annelids
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描述一种新的木虱物种作为环节动物繁殖和再生进化研究的模型
DOI：
10.1007/s13127-014-0183-5
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发表时间：
2015
影响因子：
1.6
通讯作者：
Bleidorn
中科院分区：
文献类型：
--
作者：
Aguado;Weidhase;Bleidorn
袋虫是种类最多的环节动物之一，其特点是繁殖方式多样。本文描述了一种新的叶根虫科（环节动物，叶根虫目）种——排布虫。Sp .，其特点是其独特的颜色图案，由前节背部的横红线组成；长触角和背卷在长度上有强烈的交替；具双齿的镰刀状毛纲，边缘具长刺，除较粗和尖的针尖外，在后节上出现一细小而薄的针尖，和一长前室。一项基于三个基因的小叶树的系统发育分析支持了t。安东尼。sp.是heronislandensis的姊妹种。这种姐妹群关系可能表明它们有来自太平洋的共同祖先。此外，我们推荐了几个步骤来统一分类与系统发育知识的这个群体。利用免疫细胞化学结合共聚焦激光扫描显微镜（cLSM），我们描述了该物种的内部形态。体壁由两个背侧和两个腹侧纵肌束组成，它们形成一个独特的内层。体壁肌肉组织的外层或“圆形层”由突出的横肌纤维代表，呈半圆形排列。无状旁足的肌肉组织以明显的旁足牵开肌、针状分伸肌以及突出的针状和毛状屈肌束为特征。安东尼。通过裂裂裂裂生殖产生二生匍匐茎。这个物种能够再生前端，包括原口，这是第一个没有毛羽的部分，所有的附属物，以及一些额外的毛羽，这取决于剥离的一面。前脑室、脑室、盲肠或咽牙的再生未见。相比之下，后端再生似乎是完整的。可用的数据使。安东尼。Sp.是研究得最好的syllids之一，强调其作为整个群体的模型的潜力。我们的分析建立了一个框架，为未来的研究演变的生殖模式在Syllidae，我们概述了研究问题，他们是如何与再生和发育相关。
Syllids are one of the most speciose annelid taxa and characterized by their variety of reproductive modes. We provide the description of a new species of Syllidae (Annelida, Phyllodocida),Typosyllis antonin. sp., which is characterized by its distinct color pattern consisting of transversal red lines on the dorsum of anterior segments; long antennae and dorsal cirri with strong alternation in length; bidentate chaetae falciger like with long spinulation on edge, one tiny and thin acicula appearing in posterior segments in addition to thicker and pointed one, and a long proventricle. A phylogenetic analysis of Syllinae based on three genes supports thatT. antonin. sp. is sister species toTyposyllis heronislandensis. This sister group relationship may indicate a common ancestor from the Pacific. Moreover, we recommend several steps to unify the taxonomy with phylogenetic knowledge of this group. Using immunocytochemistry coupled with confocal laser scanning microscopy (cLSM), we describe the internal morphology of this species. The body wall is composed of two dorsal and two ventral longitudinal muscle bundles that form a distinct inner layer. The outer or “circular layer” of body wall musculature is represented by prominent transverse muscle fibers that exhibit a semicircular arrangement. The musculature of the uniramous parapodia is characterized by distinct parapodial retractor muscles, acicular protractor muscles, as well as prominent acicular and chaetal flexor muscle bundles.T. antonin. sp. reproduces by schizogamic scissiparity producing dicerous stolons. This species is able to regenerate the anterior end, including the prostomium, the first chaetae-less segment with all appendages, and some additional chaetigers, depending on the dissection side. Regeneration of the proventricle, ventricle, caeca, or pharyngeal tooth is not detectable. In contrast, regeneration of the posterior end appears to be complete. The available data makesT. antonin. sp. to be one of the best investigated syllids, emphasizing its potential as model for the whole group. Our analysis establishes a framework for future studies on the evolution of reproductive modes in Syllidae, and we outline research questions how they are related to regeneration and development.
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加拉帕戈斯群岛间的动物群。
DOI：
--
发表时间：
1974
期刊：
影响因子：
--
作者：
W. Westheide
通讯作者：
W. Westheide
Sílidos（Sylidae：Polychaeta）del Parque Nacional de Coiba（太平洋，巴拿马）
影响因子：
0.6
作者：
M. T. Aguado;G. S. Martín
通讯作者：
G. S. Martín
影响因子：
10.7
作者：
Weigert, Anne;Helm, Conrad;Struck, Torsten H.
通讯作者：
Struck, Torsten H.
影响因子：
4
作者：
Fischer, A;Dorresteijn, A
通讯作者：
Dorresteijn, A
海洋环节动物的前胃：具有最长记录肌节的肌肉准备。
DOI：
--
发表时间：
1972
影响因子：
11.1
作者：
J. D. Del Castillo;M. Anderson;D. Smith
通讯作者：
D. Smith