斯洛文尼亚晚中新世(墨西尼亚)Austropotamobius Skorikov, 1907(十足目:虾蛄科:虾蛄科)一新种,附对欧洲小龙虾进化的评述

IF 1.2 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Journal of Crustacean Biology Pub Date : 2023-10-27 DOI:10.1093/jcbiol/ruad058
Rok Gašparič, Denis Audo, Tadashi Kawai, Tea Kolar-Jurkovšek, Miha Marinšek, Bogdan Jurkovšek
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引用次数: 0

摘要

小龙虾在化石记录中相当罕见,限制了我们对其进化史的理解。我们描述和讨论来自斯洛文尼亚中新世的小龙虾化石。该化石仅包括头胸,第一种视足动物和另一种足跖动物,似乎与AustropotamobiusSkorikov(1907)密切相关,但也具有令人想起AstacusFabricius(1775)的epistome和后隆突。由于这些原因,它暂时被分配给奥斯波塔莫比斯。它不同于所有其他的Austropotamobius物种的形状是它的头状叶和后脊状突起,而与Austropotamobius torrentium (von Paula Schrank, 1803)最相似的是它的纹饰。因此,它被描述为一个新种,Austropotamobius plenicarisp。11 .这个新物种与咸淡水介形类有关,很可能是在稍古老的沉积物中重新加工而成的,表明它是在中新世晚期(墨西尼亚)。这个物种的起源和年龄表明,它生活在阿斯塔克斯和南波塔莫比斯分裂之后很长一段时间,也可能是在两个南波塔比斯物种分裂之后。苍白和Au。torrentium),可能与Au同时代,并生活在Au多样化的地区。torrentium单。
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A new species of Austropotamobius Skorikov, 1907 (Decapoda: Astacidae: Astacidae) from the late Miocene (Messinian) of Slovenia, with remarks on the evolution of European crayfishes
Abstract Crayfishes are rather rare in the fossil record, limiting our understanding of their evolutionary history. We describe and discuss a fossil crayfish from the Miocene of Slovenia. This fossil, comprising only the cephalothorax, first pereiopod, and another cheliped, seems closely allied to AustropotamobiusSkorikov, 1907, but also bears an epistome and postorbital carina reminiscent of AstacusFabricius, 1775. For these reasons, it is tentatively assigned to Austropotamobius. It differs from all other Austropotamobius species by the shapes of its epistome cephalic lobe, and postorbital carina, and resemble Austropotamobius torrentium (von Paula Schrank, 1803) most due to its ornamentation. It is therefore described as a new species, Austropotamobius plenicarisp. nov. The new species is associated with brackish water ostracods, most likely reworked from slightly older sediments, suggesting a late Miocene (Messinian) age. The origin of this species and its age show it lived long after the split between Astacus and Austropotamobius, and also probably after the split between the two Austropotamobius species (Au. pallipes and Au. torrentium), and may have been contemporary to, and lived in the area of the diversification of Au. torrentium haplotypes.
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来源期刊
Journal of Crustacean Biology
Journal of Crustacean Biology 生物-海洋与淡水生物学
CiteScore
2.10
自引率
9.10%
发文量
66
审稿时长
6-12 weeks
期刊介绍: The Journal of Crustacean Biology is the official journal of The Crustacean Society, publishing peer-reviewed research on all aspects of crustacean biology and other marine arthropods. Papers are published in English only, but abstracts or summaries in French, German, Portuguese, or Spanish may be added when appropriate.
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