Mitochondrial genome phylogeny reveals the deep-time origin of Gomphomastacinae (Orthoptera: Eumastacidae) and its alpine genera in China

IF 3.7 1区 生物学 Q1 Agricultural and Biological Sciences
Jun-Jie Ge, Hong-Fei Ying, Sheng-Quan Xu, Hua-Teng Huang
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Abstract

Gomphomastacinae is a grasshopper subfamily in Eumastacidae, with a morphology and distribution distinct from other subfamilies. The alpine genera of Gomphomastacinae that inhabit the Qinghai–Tibet Plateau in China show unique characteristics adapted to high-altitude life. However, their phylogenetic position and biogeographic history remain controversial. Thus, to determine the diversification history of these alpine genera and the origin of the subfamily, we obtained mitochondrial genome sequences from all seven Gomphomastacinae genera distributed in China. The reconstructed phylogeny was well supported and confirmed the phylogenetic position of Gomphomastacinae within Eumastacidae. Time calibration revealed a deep-time origin of the subfamily dating back to the Cretaceous period, and the diversification among alpine genera was also an ancient pre-Miocene event (30–50 Ma). Based on phylogeny and time estimates, the most likely biogeographic scenario is that Gomphomastacinae originated from an ancestral lineage that lived in East Gondwana and dispersed to Central and Western Asia through India. Subsequently, the alpine genera likely diverged along with the uplift of the Qinghai–Tibet Plateau and survived drastic climate change by in situ adaptation to high-altitude dwellings.

Abstract Image

线粒体基因组系统发育揭示了中国gomphomastacae(直翅目:真马蝇科)及其高山属的深时间起源
Gomphomastacinae是蝗虫亚科中的一个蝗虫亚科,其形态和分布与其他亚科不同。栖息在中国青藏高原的高海拔Gomphomastacinae属表现出适应高海拔生活的独特特征。然而,它们的系统发育位置和生物地理历史仍有争议。因此,为了确定这些高山属的多样化历史和亚科的起源,我们获得了分布在中国的所有7个Gomphomastacinae属的线粒体基因组序列。重建的系统发育得到了很好的支持,证实了Gomphomastacinae在马蹄科中的系统发育地位。时间定标表明,该亚科的起源可以追溯到白垩纪,而高山属之间的多样化也是一个古老的前中新世事件(30-50 Ma)。根据系统发育和时间估计,最可能的生物地理情景是Gomphomastacinae起源于生活在东冈瓦纳的祖先谱系,并通过印度分散到中亚和西亚。随后,高寒属可能随着青藏高原的隆升而分化,并通过对高海拔生境的原位适应而在剧烈的气候变化中生存下来。
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来源期刊
Journal of Systematics and Evolution
Journal of Systematics and Evolution Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
7.40
自引率
8.10%
发文量
1368
审稿时长
6-12 weeks
期刊介绍: Journal of Systematics and Evolution (JSE, since 2008; formerly Acta Phytotaxonomica Sinica) is a plant-based international journal newly dedicated to the description and understanding of the biological diversity. It covers: description of new taxa, monographic revision, phylogenetics, molecular evolution and genome evolution, evolutionary developmental biology, evolutionary ecology, population biology, conservation biology, biogeography, paleobiology, evolutionary theories, and related subjects.
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