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자연과학
공학
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예술체육학
복합학
DBpia AI
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지원사업
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커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Global biodiversity loss continues unabated, and in Australia, the rate of recent mammal extinctions is among the worst in the world. Meanwhile, the diversity among and within many endemic mammal species remains undescribed. This information is crucial to delineate species boundaries and thus inform decision-making for conservation. <i>Sminthopsis virginiae</i> (the red-cheeked dunnart) is a small, dasyurid marsupial found in four disjunct populations around the northern coast of Australia and New Guinea. There are three currently recognized subspecies, each occupying a distinct geographic location. <i>Sminthopsis v. virginiae</i> occurs in Queensland, <i>S. v. rufigenis</i> is distributed across New Guinea and the Aru Islands, and <i>S. v. nitela</i> has populations in the Top End of the Northern Territory and the Kimberley region of Western Australia. Previous molecular work has suggested the current subspecies definitions are not aligned with DNA sequence data, though the sampling was limited. We undertook a comprehensive genetic and morphological review of <i>S. virginiae</i> to clarify relationships within the species. This included mitochondrial (CR, 12S, and cytb) and nuclear (omega-globin, IRBP, and bfib7) loci, and morphometric analysis of skulls and whole wet-preserved specimens held in museums. Maximum Likelihood and Bayesian phylogenetic analyses resolved samples into two distinct clades, demarcated by the Gulf of Carpentaria in Australia's north. <i>Sminthopsis. v. nitela</i> was consistently separated from <i>S. v. virginiae</i> and <i>S. v. rufigenis</i>, based on the overall body and skull size and craniodental features, while <i>S. v. virginiae</i> and <i>S. v. rufigenis</i> were more difficult to distinguish from each other. Thus, we redescribed <i>S. virginiae</i>, recognizing two species, <i>S. nitela</i> (raised from subspecies) and <i>S. virginiae</i> (now comprising the subspecies <i>S. v. virginiae</i> and <i>S. v. rufigenis</i>). This study highlights the importance of recognizing cryptic mammal fauna to help address the gap in our knowledge about diagnosing diversity during a time of conservation crisis.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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