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Distribution of Temminck's pangolin (Smutsia temminckii) in South Africa, with evaluation of questionable historical and contemporary occurrence records
African Journal of Ecology ( IF 1 ) Pub Date : 2021-04-09 , DOI: 10.1111/aje.12866
Darren W. Pietersen 1, 2 , Jolene T. Fisher 3 , Kelsey L. Glennon 3 , Kimberley A. Murray 3 , Francesca Parrini 3
Affiliation  

Temminck's pangolin (Smutsia temminckii) is a threatened mammal found in southern and eastern Africa. It is the most widely distributed African pangolin species yet is listed as Vulnerable on the IUCN Red List due to a projected population decline of 30%–40% within the next three generations. This species' secretive, predominantly nocturnal behaviour and generally low population densities make it difficult to directly assess its distribution, and thus, alternative methods are required. Furthermore, many historical and some contemporary records of this species exist from outside of its accepted range, suggesting that the distribution may be greater than currently accepted, although the validity of these records has never been assessed. We used MaxEnt modelling to evaluate the most likely distribution of S. temminckii in South Africa and compared the past and present distribution of the species, as well as assessed the probable validity of the questionable records. Our results suggest that one of the questionable historical museum records is probably valid, while the other may refer to an erroneous collecting locality. At least some contemporary sightings which were originally deemed questionable are probably valid, while others should be treated as dubious until supporting information to validate their authenticity becomes available.

中文翻译:

Temminck 穿山甲(Smutsia temminckii)在南非的分布,以及对有问题的历史和当代发生记录的评估

Temminck 的穿山甲(Smutsia temminckii)是一种在非洲南部和东部发现的受威胁的哺乳动物。它是分布最广的非洲穿山甲物种,但由于预计在未来三代内数量下降 30%–40%,因此被列为 IUCN 红色名录中的易危物种。该物种的秘密,主要是夜间行为和普遍较低的人口密度使其难以直接评估其分布,因此需要替代方法。此外,该物种的许多历史和一些当代记录存在于其可接受范围之外,这表明分布可能比目前接受的范围更大,尽管从未评估过这些记录的有效性。我们使用 MaxEnt 建模来评估最可能的分布南非的S. temminckii并比较了该物种过去和现在的分布,并评估了可疑记录的可能有效性。我们的结果表明,一个有问题的历史博物馆记录可能是有效的,而另一个可能指的是错误的收藏地点。至少一些最初被认为有问题的当代目击事件可能是有效的,而其他目击事件应该被视为可疑,直到获得支持信息以验证其真实性。
更新日期:2021-04-09
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