Presumptive stridulatory organs in Paranthura cf. japonica Richardson, 1909 (Isopoda: Cymothoida: Paranthuridae)

Presumptive stridulatory organs in Paranthura cf. japonica Richardson, 1909 (Isopoda: Cymothoida: Paranthuridae)
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Paranthura 中推定的发声器官 cf.

DOI:
10.1093/jcbiol/ruab026
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发表时间:
2021
影响因子:
1.1
通讯作者:
Shiraki Shoki
Shiraki Shoki
中科院分区:
生物学4区
文献类型:
--
作者:
Kakui Keiichi;Shiraki Shoki

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发声结构的形态多样性还没有得到很好的研究中的成员Peracarida的总目的。据报道,在一些片足类和tanaidaceans中有可能存在发声器官,并且在Oniscidea和Sphaeromatidea的两个等足类物种中已经记录了这些器官的发声。我们描述了三个推定的发声器官在paranthuracf.japonicaRichardson,1909年,第一个案件中所知的Cymothoida。一种类型,包括一个鳞片轴承旋钮上的pereonite的后外侧角和鳞片轴承的前外侧角的后续pereonite,被发现之间的两对pereonites(1,2和2,3)。第二种类型涉及锯齿状结构的次后外侧区域的pereonites 1和2,与尖锐的前外侧边缘的pereonites 2和3出现提供相应的plectra。第三种类型涉及一个扩展轴承上的pereonites 1和2的posteroventral边缘的锯齿状结构对; pereonites 2和3的前腹外侧边缘似乎提供相应的plectra。所有这三个器官都发生在两种性别的P. cf. japonica。我们在潮间带等足类动物中发现了新的、假定的发声器官,这表明即使是普通的近蜱类物种的生物学也还有很多东西有待了解。
Morphological diversity of sound-producing structures has not been well investigated among members of superorder Peracarida. Presumptive stridulatory sound-producing organs have been reported in some amphipods and tanaidaceans, and sound production by these organs has been documented in two isopod species in Oniscidea and Sphaeromatidea. We describe three presumptive stridulatory organs in the paranthurid isopodParanthuracf.japonicaRichardson, 1909, the first case known in Cymothoida. One type, consisting of a scale-bearing knob on the posterolateral corner of a pereonite and the scale-bearing anterolateral corner of the succeeding pereonite, was found between two pairs of pereonites (1, 2 and 2, 3). A second type involves a serrated structure in the sub-posterolateral region of pereonites 1 and 2, with the sharp anterolateral margins of pereonites 2 and 3 appearing to provide corresponding plectra. The third type involves an extension bearing a pair of serrated structures on the posteroventral margin of pereonites 1 and 2; the anterior-ventrolateral edges of pereonites 2 and 3 appear to provide corresponding plectra. All three organs occurred in both sexes ofP.cf.japonica. Our discovery of novel, presumptive stridulatory organs in an intertidal isopod indicates that much remains to be learned about the biology of even common peracarid species.
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