著者

Hiroki Nakajima Ryuta Yoshida Tohru Naruse

出版者

The Plankton Society of Japan, The Japanese Association of Benthology

雑誌

Plankton and Benthos Research (ISSN:18808247)

巻号頁・発行日

vol.17, no.1, pp.34-44, 2022-02-22 (Released:2022-02-23)

参考文献数

30

被引用文献数

2

---

Four mantis shrimp species are recorded from the Ryukyu and Ogasawara islands, southern Japan: Gonodactylaceus ternatensis (De Man, 1902) (Gonodactylidae); Lysiosquilloides siamensis (Naiyanetr, 1980) (Lysiosquillidae); Alimopsoides tuberculatus Moosa, 1991 (Squillidae); and Busquilla plantei Manning, 1978 (Squillidae). This is the first specimen-based record of G. ternatensis and the first distributional records of the latter three species from Japan. The genus Lysiosquilloides Manning, 1977 is recorded for the first time from Japanese waters, and the genus Alimopsoides Moosa, 1991 is newly found from the northern hemisphere. Diagnoses, taxonomic remarks, ecological notes and new standard Japanese names are provided.

著者

Hirozumi Kobayashi Tohru Naruse

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.28, no.2, pp.177-187, 2023-08-10 (Released:2023-08-10)

参考文献数

26

---

A single specimen of gecarcinid crab, Discoplax gracilipes Ng and Guinot, 2001, was collected from an anchialine pool in a cave on Hateruma Island, southern Ryukyu Archipelago, southwestern Japan. This species was previously known only from the central Philippines. The present specimen represents the first record of the species from Japan, extending its distributional range to about 1400 km northward. Additionally, the fauna of the cave on Hateruma Island briefly noted. A key to the Japanese species of the family Gecarcinidae is provided.

著者

Tohru Naruse Daisuke Uyeno

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.50, pp.107-118, 2021-09-30 (Released:2021-09-29)

参考文献数

8

---

A new species of swimming crab of the genus Catoptrus A. Milne-Edwards, 1870 (Portunidae) is described from Kagoshima, southern Japan. Catoptrus lavicolus n. sp. was collected from deep inside large lava rocks at shallow subtidal bed of Sakurajima, an active volcano. The new species differs from all seven congeners by a combination of the characters of the carapace, chelipeds and ambulatory legs. Intersex specimens of C. lavicolus n. sp. were observed in this study, while no male specimen has been collected.

著者

Ryohei Sugime Yutaka Okuzaki Katsumi Furuse Osamu Kishida Tohru Naruse

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.39-45, 2022-07-02 (Released:2022-07-02)

参考文献数

25

被引用文献数

2

---

Freshwater crabs of the genus Geothelphusa Stimpson, 1858 were collected from a river on Oshima Peninsula, Hokkaido, northern Japan. They were identified as Geothelphusa dehaani (White, 1847) based mainly on structures of the carapace and the male first gonopods. In the study river, G. dehaani occurred in the upper reach of the main stream and in several tributaries but was not found in the middle reach. The presence of brooding females and many immature individuals suggests that the G. dehaani population is established in the river.

著者

Keiichi Kakui Daisuke Uyeno Tohru Naruse

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.24, no.1, pp.49-60, 2019-05-25 (Released:2019-05-25)

参考文献数

40

被引用文献数

1

---

We describe Parakonarus kajii sp. nov. from near Iriomote Island, Ryukyu Islands, southwestern Japan. This is the first record of Parakonarus from the North Pacific. As members in this genus show great sexual dimorphism, we checked our male and female specimens for conspecificity by using partial sequences of the cytochrome c oxidase subunit I (COI) gene. The two individuals differed by two nucleotide substitutions in 661 nt (0.3% K2P distance), indicating they are the same species. This species closely resembles P. kopure reported from New Zealand, but differs in having the ventral process on the chelipedal carpus longer than wide, the inner comb-row on the chelipedal propodus composed of 16 setae, and the dactylus and unguis of pereopods 4–6 fused in the male; and the carpi of pereopods 2 and 3 without a ventrodistal spiniform seta, the propodal palm of the cheliped with two inner simple setae at the insertion of the dactylus, and article 2 of the maxillipedal palp with one mid-outer and one outer distal simple setae in the female. On the inner surface of the chelipeds in male P. kajii, we observed an elongate plate-like structure that could be a reduced ischium.

著者

Tohru Naruse

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.49, pp.49-55, 2020-05-09 (Released:2020-05-09)

参考文献数

12

---

A new species of Hexapinus (Hexapodidae) is described from Hatoma Island, Ryukyu Islands, Japan. Hexapinus patuma, new species, is morphologically close to H. latus Rahayu & Ng, 2014, but can be distinguished by the structures of the carapace and third maxilliped, as well as the degree of setation of ambulatory legs.

著者

Tohru Naruse Mathilde Richer de Forges Bertrand Richer de Forges Daisuke Uyeno

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.49, pp.33-39, 2020-03-09 (Released:2020-03-09)

参考文献数

11

---

A rare xanthid crab species Cyrtocarcinus truncatus (Rathbun, 1906) is recorded from Ouvéa, Loyalty Islands, New Caledonia, and Ishigaki Island, Ryukyu Islands, Japan. This represents the first record of the species from outside Hawaii. Morphological features and its variations are described in detail.

著者

Takeshi Sasaki Tohru Naruse

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.43, pp.31-40, 2014-12-15 (Released:2017-05-15)

被引用文献数

2 3

---

Acorn foraging activity and feeding behaviour by two species of potamid freshwater crabs (Geothelphusa grandiovata and Candidiopotamon okinawense) were studied at Yanbaru forest, northern Okinawa Island, Ryukyu Islands, Japan. Adult females of the two species were observed to inhabit burrows that were filled with acorns of Castanopsis sieboldii and Quercus miyagii. The burrows with the crabs as well as gathered acorns were distributed relatively close to a stream (0.8-5 m) at slopes of the forest. Acorns were either eaten with a part of the lower part or seed coat remaining, or vertically broken up and only the inside consumed. Feeding experiments under laboratory conditions indicated that the acorns eaten by G. grandiovata had the same feeding scars as the ones found around crabs burrows, suggesting that the crabs were indeed feeding on acorns. There were 1-24 uneaten acorn(s) observed from all burrows with gathered acorns. Some of the uneaten acorns were even germinated at both around opening of and in the burrow. The accumulation of acorns by the crabs thus inadvertently helps the dispersal of C. sieboldii and Q. miyagii along the slopes of valleys, where the seeds cannot easily lodge and germinate.

著者

Tohru Naruse Peter K. L. Ng

出版者

日本甲殻類学会

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.37, pp.1-13, 2008 (Released:2017-05-15)

参考文献数

21

被引用文献数

2 5

---

A new species of the genus Chiromantes Gistel, 1848 s. str. is described from the Ryukyu Islands. The new species is distinguished from another species of Chiromantes s. str., C. haematocheir (De Haan, 1833), by having proportionately longer and less setose ambulatory legs, a relatively flatter carapace, larger eyes, proportionally narrower front, relatively broader male sixth abdominal segment, less inflated male chela, and distinct colouration. The present study also regards Holometopus serenei as a junior subjective synonym of C. haematocheir.