Holocene biogeography of the southwestern European white‐toothed shrew (Crocidura iculisma, Eulipotyphla) through its fossil record

IF 4.3 2区 生物学 Q1 ECOLOGY Mammal Review Pub Date : 2024-07-30 DOI:10.1111/mam.12374
Ángel C. Domínguez‐García, Adrián Álvarez‐Vena, César Laplana, Paloma Sevilla, Jacinto Román, Josep Francesc Bisbal‐Chinesta, Javier Calzada, M. Ángeles Galindo‐Pellicena, Luis Benítez De Lugo Enrich
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Abstract

Crocidura iculisma (=C. suaveolens) is a shrew (Soricidae, Eulipotyphla) showing a fragmented distribution limited to the Iberian Peninsula, southern and western France and northwestern Italy. Although it has been in the Iberian Peninsula since the Middle Pleistocene, its biogeographical history remains poorly known. Here, we provide new data on Crocidura iculisma from the Castillejo del Bonete site (southern Spain) dated as 3.8–3.6 cal kyr BP. At the same time, we analyse changes in its geographic distribution based on its palaeontological record. We have reviewed thoroughly the Holocene record of Crocidura iculisma in southwestern Europe, considering independently the three time intervals according to the stages defined for this geological time series (Greenlandian, Northgrippian and Meghalayan). Whenever found together in fossil sites, the relative abundance of the two sympatric shrews of the genus Crocidura (Crocidura russula and Crocidura iculisma) was analysed. The data obtained concerning past distribution range and relative abundance were compared with the current status of the species in Iberia to interpret changes through time. The distribution range of the southwestern European white‐toothed shrew in the Iberian Peninsula has notably reduced over time until today. The occurrence at Castillejo del Bonete and other palaeontological records located beyond its current distribution range show that it was distributed in several areas of the eastern part and southern interior of Iberia, at least until the second half of the Meghalayan. Relative abundance patterns observed in the fossil assemblages suggest that competitive exclusion by Crocidura russula and climatic changes played a crucial role in driving the extirpation of Crocidura iculisma from a substantial portion of the Iberian Peninsula.
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通过化石记录研究欧洲西南部白齿鼩(Crocidura iculisma,Eulipotyphla)全新世的生物地理特征
Crocidura iculisma(=C. suaveolens)是一种鼩鼱科(Soricidae,Eulipotyphla)动物,分布于伊比利亚半岛、法国南部和西部以及意大利西北部。虽然自中更新世以来它就一直在伊比利亚半岛活动,但其生物地理历史仍然鲜为人知。在这里,我们提供了来自 Castillejo del Bonete 遗址(西班牙南部)的 Crocidura iculisma 的新数据,其年代为公元前 3.8-3.6 千年。同时,我们还根据其古生物学记录分析了其地理分布的变化。我们全面审查了欧洲西南部全新世的 Crocidura iculisma 记录,并根据该地质年代系列所定义的阶段(格林兰期、北格里皮期和梅加拉亚期)独立考虑了三个时间段。只要在化石遗址中发现两种同域鼩鼱(Crocidura russula 和 Crocidura iculisma),就会对其相对丰度进行分析。所获得的有关过去分布范围和相对丰度的数据与伊比利亚的物种现状进行了比较,以解释不同时期的变化。随着时间的推移,西南欧白齿鼩在伊比利亚半岛的分布范围明显缩小,直至今日。卡斯蒂列霍-德尔-博内特(Castillejo del Bonete)的发现以及位于其目前分布范围之外的其他古生物记录表明,至少在梅加拉亚后半期之前,白齿鼩还分布在伊比利亚东部和南部内陆的一些地区。在化石群中观察到的相对丰度模式表明,Crocidura russula 的竞争性排斥和气候变化在促使 Crocidura iculisma 从伊比利亚半岛的大部分地区灭绝方面发挥了至关重要的作用。
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来源期刊
Mammal Review
Mammal Review 生物-动物学
CiteScore
12.20
自引率
4.10%
发文量
29
审稿时长
>12 weeks
期刊介绍: Mammal Review is the official scientific periodical of the Mammal Society, and covers all aspects of mammalian biology and ecology, including behavioural ecology, biogeography, conservation, ecology, ethology, evolution, genetics, human ecology, management, morphology, and taxonomy. We publish Reviews drawing together information from various sources in the public domain for a new synthesis or analysis of mammalian biology; Predictive Reviews using quantitative models to provide insights into mammalian biology; Perspectives presenting original views on any aspect of mammalian biology; Comments in response to papers published in Mammal Review; and Short Communications describing new findings or methods in mammalian biology.
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