New evidence of cryptic speciation in the family Longidoridae (Nematoda: Dorylaimida),Journal of Zoological Systematics and Evolutionary Research

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New evidence of cryptic speciation in the family Longidoridae (Nematoda: Dorylaimida)
Journal of Zoological Systematics and Evolutionary Research ( IF 2.0 ) Pub Date : 2020-06-25 , DOI: 10.1111/jzs.12393
Ruihang Cai _{1,

2} , Antonio Archidona‐Yuste _{1,

3} , Carolina Cantalapiedra‐Navarrete ₁ , Juan E. Palomares‐Rius ₁ , Pablo Castillo ₁

Affiliation

Longidorid nematodes comprise more than 500 species, and Longidorus and Xiphinema are the most diversified, prevalent, and cosmopolitan genera within plant‐parasitic nematodes. This increases the risk of species misidentification. We conducted an integrative morphometric and genetic study on two longidorid species to elucidate the existence of new cases of cryptic speciation within the genera Longidorus and Xiphinema. Detailed morphological, morphometrical, multivariate, and genetic studies were carried out, and mitochondrial and nuclear haploweb analyses were used to differentiate species within the L. iliturgiensis and X. hispanum complexes. Species delimitation using multivariate and haplonet tools of L. iliturgiensis species complex clearly separated L. tabernensis sp. nov. from L. iliturgiensis and L. indalus, and X. subbaetense sp. nov. from X. hispanum and X. adenohystherum. D2‐D3, partial 18S, and partial coxI regions were used for inferring their phylogenetic relationships with other species in each genus. The present study provides new insights into the diversity of Longidorus and Xiphinema species detected in southern Spain, and new evidence of cryptic speciation in both genera. These results support our hypothesis that the biodiversity of Longidoridae in southern Europe is higher than previously supposed and is still not fully clarified.

中文翻译：

Longidoridae（线虫科：Dorylaimida）家族中隐性物种形成的新证据

Longidorid线虫包括多于500种，Longidorus和剑线虫是最多样化的流行，和国际化的植物寄生线虫内属。这增加了物种错误识别的风险。我们进行了两种形态学和遗传学的综合研究，以阐明在Longidorus和Xiphinema属中存在新的隐性物种。进行了详细的形态学，形态计量学，多变量和遗传学研究，并使用线粒体和核单倍体分析来区分伊利特里希氏菌和西班牙锥虫。复合体。使用多变量和单倍网工具对iliturgiensis物种复合体进行物种定界可以清楚地分离出tabernensis sp。十一月来自L. iliturgiensis和L. indalus，以及X. subbaetense sp.。十一月来自X. hispanum和X. adenohystherum。D2-D3，部分18S和部分coxI区域用于推断它们与每个属中其他物种的系统发育关系。本研究提供了新的见解的多样性Longidorus和剑线虫在西班牙南部发现了两个物种，并且在两个属中都发现了隐性物种的新证据。这些结果支持了我们的假设，即南欧Longidoridae的生物多样性高于先前的假设，但仍未完全阐明。

更新日期：2020-06-25

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