著者

福家 悠介 岩﨑 朝生 笹塚 諒 山本 佑治

出版者

日本甲殻類学会

雑誌

CANCER (ISSN:09181989)

巻号頁・発行日

vol.30, pp.63-71, 2021-08-01 (Released:2021-08-26)

参考文献数

54

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Neocaridina denticulata (Decapoda: Atyidae) is a freshwater shrimp with a land-locked life-history and is widely distributed in western Japan. The taxonomic confusion of this species, caused by the loss of type specimens, unknown type locality, and genetic and morphological geographical variation, has led to inconveniences in biodiversity conservation and the identification of exotic species that recently invaded Japan. Therefore, it is important to clarify this species’ distributional range and regional genetic and morphological characteristics to solve the problem. Here we report the first record of N. denticulata from Fukue-jima Island in the Goto Islands, Nagasaki Prefecture, Japan. Morphological analyses identified the population as N. denticulata, and mitochondrial DNA-based analyses suggested that the population was distinctly differentiated from the Kyushu populations. This population is essential for inferring the N. denticulata distribution formation and biota formation processes in the Goto Islands. On Fukue-jima Island, N. denti­culata has only been found in one pond; thus, the Fukue-jima population is likely to be in critical condition.

著者

福家 悠介

出版者

日本甲殻類学会

雑誌

CANCER (ISSN:09181989)

巻号頁・発行日

vol.29, pp.25-27, 2020-08-01 (Released:2020-09-09)

参考文献数

10

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Tachaea chinensis (Isopoda: Corallanidae) is an ectoparasitic isopod that is sporadically reported from East Asia. Freshwater prawns and shrimps are characteristic hosts. Two specimens of unidentified crustacean collected at Lake Kasumigaura in 1915 were identified as T. chinensis. The specimens were originally kept at the Center for Ecological Research, Kyoto University and are now maintained at the Kyoto University Museum. To the best of my knowledge, these two specimens represent the oldest example of T. chinensis in Japan. The specimens are assumed to have been collected by N. Annandale. Other specimens collected at the same time were entrusted to W.M. Tattersall and reported in 1921. The specimens, collected over 100 years ago, are important in understanding biodiversity and environmental changes.

著者

三内 悠吾 国松 翔太 奥川 陽平 福家 悠介

出版者

国立大学法人 鹿児島大学総合研究博物館

雑誌

Ichthy, Natural History of Fishes of Japan (ISSN:24357715)

巻号頁・発行日

vol.3, pp.41-46, 2020 (Released:2020-12-22)