首页|Contemporary Asymmetric Genetic Introgression Between Two Pelophylax Species in Shanghai

Contemporary Asymmetric Genetic Introgression Between Two Pelophylax Species in Shanghai

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Human disturbances are considered to break reproduction barriers among species.Significant increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,providing novel insights into species evolution mechanisms and conservation management in the Anthropocene.The Eastern Golden Frog(Pelophylax plancyi)and Black-Spotted Frog(P.nigromaculatus)are two sympatric anuran species with a long history of mitochondrial genome introgression in highly urbanized continental East Asia.However,there is only limited understanding of the pattern of their contemporary hybridization and factors influencing their interspecific relationship under anthropogenic disturbances.Here,interspecific hybridization between P.plancyi and P.nigromaculatus at the population level was investigated in Shanghai.All except two haplotypes obtained from both species in Shanghai were mixed together,and located in the introgression clade,implying multiple ancient mitochondrial introgression events occurred in the populations of our study area.Asymmetric genetic introgression was detected by microsatellite markers,with 0.7%of P.plancyi and 14.6%of P.nigromaculatus identified as contemporary admixed individuals.Consistent with the trend of population density,higher genetic diversity of neutral microsatellite loci was found in the more abundant P.plancyi;however,variation in mitochondrial(Cyt-b)and nuclear(POMC)genes was higher in relatively rare P.nigromaculatus.The population density of P.plancyi and number of water patches within local habitats were significantly positively correlated with both occurrences and proportions of admixed individuals in the populations of P.plancyi and P.nigromaculatus.Considering the prevalent transformation of habitats in urbanized areas,these results imply that a high population density in isolated artificially altered habitats is likely to increase interspecific hybridization.Thus,population monitoring and improvement of landscape connectivity between habitats would be needed to control the intensity of interspecific hybridization between P.plancyi and P.nigromaculatusin anthropogenic-disturbed environments.

anthropogenic disturbancesinterspecific hybridizationPelophylaxspecies abundanceurban landscapeurbanization

Xu WEI、Wenli LIU、Gang WANG、Rui MA、Meiling HUANG、Jiaxin ZHENG、Tingwei DONG、Changqing YUAN、Shunqi BO、Xiao YUAN、Ben LI、Shuo MA、Qu YUE、Youzhong DING、Zhenghuan WANG

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School of Life Sciences,East China Normal University,Shanghai 200241,China

Shanghai Landscaping and City Appearance Administrative Bureau,Shanghai 200041,China

State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China

Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration,East China Normal University,Shanghai 200241,China

Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station,Ministry of Education&Shanghai Science and Technology Committee,Shanghai 202162,China

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国家自然科学基金Yangtze Delta Estuarine Wetland Ecosystem Observation and Research StationShanghai Key Lab for Urban Ecological Processes and Eco-RestorationShanghai Key Lab for Urban Ecological Processes and Eco-Restoration中央高校基本科研业务费专项

32071529Z202204SHUES2020B06SHUES2021C04

2024

10.3724/ahr.2095-0357.2023.0013

亚洲两栖爬行动物研究(英文版)
中国科学院成都生物研究所

亚洲两栖爬行动物研究(英文版)

影响因子：0.2
ISSN：2095-0357
年,卷(期)：2024.15(1)
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