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Homoplasy and morphological stasis revealed through multilocus phylogeny of new myrmecophilous species in Armadillidiidae (Isopoda: Oniscidea)
Zoological Journal of the Linnean Society ( IF 2.8 ) Pub Date : 2021-07-17 , DOI: 10.1093/zoolinnean/zlab066
Ernesto Recuero 1 , Paula C Rodríguez-Flores 1, 2 , Mario García-París 1
Affiliation  

The terrestrial isopod family Armadillidiidae presents higher diversity in karstic areas, with fewer species present in areas with reduced suitable subterranean habitats, such as siliceous sandy soils. Myrmecophily, although not widespread in the family Armadillidiidae, can help these animals to colonize sandy substrates, as is observed in several populations of myrmecophilous Armadillidiidae species in central and southern Spain. Morphological examination and multilocus phylogenetic analyses, including mitochondrial DNA (Cox1) and nuclear DNA (18S, 28S and H3) markers, indicate that these myrmecophilous populations represent four new taxa: Iberiarmadillidium pinicola gen. & sp. nov., Iberiarmadillidium psammophilum sp. nov., Iberiarmadillidium sakura sp. nov. and Cristarmadillidium myrmecophilum sp. nov. Some of the main diagnostic characters used in the taxonomy of Armadillidiidae are not clearly apomorphic. Among head morphologies, Eluma type seems to be the ancestral state, being typical of several unrelated lineages; duplocarinate and Armadillidium types are derived states observed in unrelated lineages. The presence of a schisma is a convergent character state, because it has been identified in several taxa nested in unrelated clades. The newly described taxa present patterns of morphological stasis and homoplasy, likely to be associated with their shared myrmecophilous habits. The generic taxonomy of the family needs a deep revision including phylogenetic approaches and thorough taxon sampling.

中文翻译:

犰狳科(等足亚目:Oniscidea)新嗜虫菌种的多位点系统发育揭示了同质性和形态学停滞

陆地等足类动物犰狳科在岩溶地区呈现出更高的多样性,而在适合地下栖息地减少的地区(例如硅质沙质土壤)中存在的物种较少。Myrmecophily,虽然在犰狳科中并不普遍,但可以帮助这些动物在沙质基质中定殖,正如在西班牙中部和南部的几个 myrmecophilous Armadillidiidae 物种种群中所观察到的那样。形态学检查和多位点系统发育分析,包括线粒体 DNA (Cox1) 和核 DNA (18S、28S 和 H3) 标记,表明这些 myrmecophilous 种群代表了四个新的分类群:Iberiaarmadillidium pinicola gen。&sp。11 月,伊比利亚犰狳 psammophilum sp。十一月,Iberiaarmadillidium sakura sp。十一月 和 Cristarmadillidium myrmecophilum sp。十一月 犰狳科分类学中使用的一些主要诊断特征没有明显的变形。在头部形态中,Eluma 类型似乎是祖先状态,是几个无关血统的典型;duplocarate 和 Armadillidium 类型是在无关谱系中观察到的衍生状态。分裂的存在是一种收敛的特征状态,因为它已经在嵌套在不相关进化枝中的几个分类群中被识别出来。新描述的分类群呈现形态停滞和同质的模式,可能与它们共同的嗜菌习性有关。该科的通用分类法需要进行深入的修订,包括系统发育方法和彻底的分类抽样。是几个不相关的血统的典型;duplocarate 和 Armadillidium 类型是在无关谱系中观察到的衍生状态。分裂的存在是一种收敛的特征状态,因为它已经在嵌套在不相关进化枝中的几个分类群中被识别出来。新描述的分类群呈现形态停滞和同质的模式,可能与它们共同的嗜菌习性有关。该科的通用分类法需要进行深入的修订,包括系统发育方法和彻底的分类抽样。是几个不相关的血统的典型;duplocarate 和 Armadillidium 类型是在无关谱系中观察到的衍生状态。分裂的存在是一种收敛的特征状态,因为它已经在嵌套在不相关进化枝中的几个分类群中被识别出来。新描述的分类群呈现形态停滞和同质的模式,可能与它们共同的嗜菌习性有关。该科的通用分类法需要进行深入的修订,包括系统发育方法和彻底的分类抽样。新描述的分类群呈现形态停滞和同质的模式,可能与它们共同的嗜菌习性有关。该科的通用分类法需要进行深入的修订,包括系统发育方法和彻底的分类抽样。新描述的分类群呈现形态停滞和同质的模式,可能与它们共同的嗜菌习性有关。该科的通用分类法需要进行深入的修订,包括系统发育方法和彻底的分类抽样。
更新日期:2021-07-17
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