著者

鈴木 廣志 谷川 昇 長友 隆行 津田 英治

出版者

日本甲殻類学会

雑誌

Crustacean research (ISSN:02873478)

巻号頁・発行日

no.22, pp.55-64, 1993-11-10

被引用文献数

2

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1986年5月,1987年6月および1990-1991年に,鹿児島県本土からトカラ列島にかけて,陸水産コエビ類の分布調査を行った.また,本土内を流れる川内川,万之瀬川および肝属川では,流程分布調査も行った.採集されたコエビ類は,ヌマエビ科が4属8種,テナガエビ科が2属9種であった.これら17種のうち13種が南方系の種類であったが,北方系の種も4種類出現し,本調査地域は両系の混棲する地域と考えられた.また,今まで沖縄島が北限とされていた,スベスベテナガエビMacrobrachium equidens,コツノテナガエビM. latimanus,およびツブテナガエビM. gracilirostreが大隅諸島(種子島,屋久島,口永長都島)でも採集された.したがって,これら3種の北限は大隅諸島まで引き上げられると考える.3つの河川における流程分布は,従来報告されているように河川形態,ダム,自然の滝などに影響されていることがわかり,河口から傾斜の緩やかな流域にかけては,両側回遊型のミゾレヌマエビCaridina leucostictaやミナミテナガエビMacrobrachium formosenseなどが分布し,ダムや滝などの上流域には,陸封型のミナミヌマエビNeocaridina denticulataやスジエビPalaemon (P.) pauddensのみが分布していた.

著者

Magdalini Christodoulou Thomas M. Iliffe Sammy De Grave

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.48, pp.11-21, 2019-03-16 (Released:2019-03-16)

参考文献数

16

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A new species of the alpheid shrimp genus Potamalpheops Powell, 1979 is described from an anchialine cave on Nggela Pile Island, Solomon Islands. Potamalpheops nazgul sp. nov. belongs to the P. monodi (Sollaud, 1932) species group, defined by the presence of two pairs of cuspidate setae on the distal margin of the telson and feebly or non-enlarged chelipeds. The new species is morphologically closer to P. pininsulae Bruce & Iliffe, 1992 and it is characterised among others by the presence of a well-developed antero-mesial tubercle on the eyestalk, a short rostrum with a dentate ventral carina, a toothed distal margin of first antennular segment and a non-strongly inflated carapace. The description of this new species raises the number of known species of Potamalpheops to fifteen.

著者

Kim Jung Nyun Natsukari Yutaka

出版者

日本甲殻類学会

雑誌

Crustacean research (ISSN:02873478)

巻号頁・発行日

no.29, pp.35-44, 2000-12

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A range extension to Japanese waters is recorded for three crangonid shrimps: Lissosabinea indica (De Man, 1918) previously only known from the Philippines and Indonesia; Parapontocaris levigata Chace, 1984 known from the Indo-West Pacific up to Taiwan; and Rhynocrangon sharpi (Ortmann, 1895) known from the northern North Pacific including the Far East Russian coast of the Sea of Japan. The first two species are the only members of their genera recorded from Japan. Diagnosis and illustrations are given for L. indica and P. levigata for the species recognition. Rhynocrangon sharpi is fully redescribed and illustrated, because there is no detail description of this species.

著者

Ohtsuka Susumu El-Sherbiny Mohsen M. Ueda Hiroshi

出版者

日本甲殻類学会

雑誌

Crustacean research (ISSN:02873478)

巻号頁・発行日

no.29, pp.1-11, 2000-12

被引用文献数

3

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Two new species of Tortanus (Atortus), T. (A.) ampliramus and T. (A.) nishidai, are described from the northern Red Sea and the Gulf of Aden, respectively. These new species evidently belong to the recticauda species group in the recticauda species complex. The species group has a distinct distribution in the western Indian Ocean, extending from South Africa. The functional morphology of spermatophores of Tortanus is also discussed. A semelparous reproductive strategy may be employed in some species of Tortanus, whereas others adopt an iteroparous strategy as do most of centropagoideans. The formation of swarms was found exclusively in the subgenus Atortus which inhabits clear waters. Swarms of T. (A.) erabuensis may utilize swarms of another small copepod, Oithona oculata as prey.

著者

大谷 拓也

出版者

日本甲殻類学会

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.22, pp.83-87, 1993

被引用文献数

1 1

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シオマネキのはさみ脚の不相称分化過程を解明する目的で,ふ化ゾエアから得た1令椎ガニを飼育し,その過程ではさみ脚の状態の変化を観察した.第1椎ガニはすべてが2本の小さい相称のはさみ脚を持っていたが,それらは大型化した後に左右どちらか片方が脱落し1本となった.さらに, 1本のはさみ脚を持つ個体の減少とともに,不相称なはさみ脚を持つものが増加した.これらの観察結果は,生息域における調査と同様であり,シオマネキのはさみ脚の左右性の分化過程が,山口(1977)により証明されたハクセンシオマネキのそれと順序は若干異なるが経過は同じであることを示唆している.

著者

Kooichi Konishi Munehiro Takami Takashi Yanagimoto

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.52, pp.55-67, 2023-08-31 (Released:2023-08-31)

参考文献数

42

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A morphological description of the postlarval specimen of the polychelid lobster Stereomastis panglao Ahyong & Chan, 2008, collected from Suruga Bay, on the Pacific coast of Japan, and at depths of 1,305–1,565 m, was given for the first time. Larval characteristics of the previously known polychelid postlarvae and the distribution range of S. panglao were also noted.

著者

Kazuya Nagasawa Yoshiyuki Okamoto

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.52, pp.91-95, 2023-12-04 (Released:2023-12-04)

参考文献数

11

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Examination of Japanese eels Anguilla japonica Temminck & Schlegel, 1846 from Kadota Reservoir, Fukuoka Prefecture, western Japan, revealed the infection by Argulus mongolianus Tokioka, 1939 in the eel buccal cavity. This is the second record of A. mongolianus in Japan and extends its distributional range from Miyagi Prefecture, northern Honshu, southwestward to Fukuoka Prefecture, northern Kyushu. Anguilla japonica represents a new host record. The specimens of both sexes of A. mongolianus are briefly described. This paper suggests that the parasite has been co-introduced with non-native fish hosts into Kadota Reservoir and other inland waters in northern Kyushu.

著者

Kazuya Nagasawa Hidekazu Suzuki

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.52, pp.49-54, 2023-04-04 (Released:2023-04-04)

参考文献数

9

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Markevitchielinus anchoratus Titar, 1975 is reported based on an adult female from the floor of the buccal cavity of a sea raven Hemitripterus villosus (Pallas, 1814) caught in Onagawa Bay, an inlet of the Northwestern Pacific Ocean, Miyagi Prefecture, northern Japan. The female specimen is briefly described. The female inserted its head with a pair of large, lateral processes and the anterior part of an elongate neck into the tissues of the buccal cavity floor. The present collection of M. anchoratus represents the third occurrence record of the species and extends its distributional range from Kunashiri and Shikotan islands, east of Hokkaido, to Onagawa Bay off Honshu, the largest main island of Japan. The species is specific to the sea raven and may be a subarctic species.

著者

Peter K. L. Ng

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.52, pp.15-21, 2023-02-18 (Released:2023-02-18)

参考文献数

10

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The male of the rare deep-water porter crab, Dicranodromia danielae Ng & McLay, 2005 (Homolodromiidae) is reported for the first time from Mindanao in the southern Philippines. The species was previously only known from the holotype female from Panglao in central Philippines. The diagnostic male characters are described and variation in various characters documented.

著者

Sota Nishimoto Katsuyuki Hamasaki Shigeki Dan

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.52, pp.23-30, 2023-02-18 (Released:2023-02-18)

参考文献数

23

被引用文献数

2

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We studied the artificial incubation method of red swamp crayfish Procambarus clarkii embryos using cell culture plates. In the first experiment, cleavage stage embryos or egg-nauplius stage embryos were individually cultured at 20°C in the well of cell culture plates with different water volumes per well [12 well (4 ml), 24 well (2 ml), 48 well (1 ml) and 96 well (0.25 ml)]. In the second experiment, egg-nauplius stage embryos were cultured using 12-well plates at 15, 20 and 25°C. Almost all cleavage stage embryos died without hatching. Egg-nauplius stage embryos survived to hatch. In the 96-well plates, the embryo hatched, but all first instar juveniles died soon. In other plates, the mortality of the first instar juveniles tended to increase with decreasing culture water volume; particularly, high mortality was recorded in the 48-well plates. Hatching and moulting rates were high at 15°C and 20°C, but approximately half of the first instar juveniles died at 25°C. We concluded that a 12-well cell culture plate (4 ml per well) is suitable for incubating P. clarkii embryos to hatch and the first instar juveniles to moult to the second instar at 15–20°C.

著者

Yohei Kawakami Katsuyuki Hamasaki Shuji Kondo Shigeki Dan

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.52, pp.1-13, 2023-01-18 (Released:2023-01-18)

参考文献数

44

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We examined the survival and moulting of starved early-stage-zoeae of atyid shrimps—amphidromous Paratya compressa and landlocked Paratya improvisa—under different salinity and temperature conditions to attain a better understanding of larval adaptation to freshwater environments in landlocked shrimp. The first stage zoeae were cultured without foods under 25 combinations of different salinity (0, 8.5, 17, 25.5, and 34 ppt) and temperature (20, 23, 26, 29, and 32°C) levels. The larvae of P. compressa did not moult, whereas larvae of P. improvisa are lecithotrophy and moulted to the third stage zoeae at 0–25 ppt (and rarely to the fourth stage zoeae at 8.5–25 ppt). However, all larvae lost the ability to moult in open seawater conditions of 34 ppt salinity. The larval survival time was not largely different between these two species, even though the first stage zoeae of P. improvisa were much larger than those of P. compressa. The larvae of P. improvisa advanced the development shorter rather than surviving longer under starvation conditions. These findings suggest that the starvation tolerance, that is, lecithotrophic faster developmental rate of early stage zoeae of landlocked P. improvisa, adapted better to stay in or near parental habitats as well as to limited food conditions in freshwater environments.

著者

Kazuya Nagasawa Kenyu Suzuki Fumihito Muto

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.147-152, 2022-12-06 (Released:2022-12-06)

参考文献数

19

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The pennellid copepod Lernaeenicus ramosus Kirtisinghe, 1956 is a marine fish parasite in the Indo-West Pacific region. Serranid fishes (Perciformes) are the major hosts of L. ramosus, and as its non-serranid host, a single blenniid fish (Blenniiformes) is known from Australia. A metamorphosed ovigerous female of L. ramosus was collected from a grub fish, Parapercis sexfasciata (Temminck & Schlegel, 1843) (Perciformes: Pinguipedidae), in coastal waters of Suruga Bay, an inlet of the western North Pacific Ocean, Shizuoka Prefecture, central Japan. This represents a new and the second non-serranid host records for L. ramosus and it is also the first record from a pinguipedid fish. The female is briefly described. A pennellid copepod previously reported as “Pennella sp.” from the same host species from the Iyo-Nada Sea, part of the Seto Inland Sea, western Japan, is considered to be L. ramosus.

著者

Wataru Doi Ren Kikuchi Akira Mizutani Hiroyoshi Kohno

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.137-145, 2022-12-06 (Released:2022-12-06)

参考文献数

36

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To characterize the reproductive behavior of the land crab Cardisoma carnifex, their nighttime activities on the ground surface around their burrows were monitored using infrared-triggered cameras on the Iriomote-jima Island, Japan. Matings of three pairs were recorded near the entrance of the female’s burrow. The results showed that the species shares a common mating pattern of gecarcinids: hard-female mating and short courtship. The males did not exhibit courtship behavior, except for drumming on the surface sediment. The duration of copulation was longer (29, 30, and 49 min) than that in the reference data (1–10 min). After mating, males guarded their mate’s burrow and plugged the opening from the outside. By contrast, the resident crabs sometimes plug their burrows from the inside. Burrow plugging by C. carnifex males is similar to post-copulatory guarding by males of brachyurans, to prevent multiple matings by females. The non-invasive cameras revealed novel features of mating behavior of C. carnifex such as longer copulation, drumming behavior, and burrow plugging by males.

著者

Tetsuya Sanda Tomohito Shimizu Shigeki Dan Katsuyuki Hamasaki

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.129-135, 2022-11-09 (Released:2022-11-09)

参考文献数

23

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Temperature is one of the most important environmental factors affecting the geographic distribution of ectotherms. We evaluated the low- and high-temperature tolerance limits of juveniles of two mud crab species, Scylla paramamosain and Scylla serrata, which are distributed in temperate and subtropical/tropical areas in Japan, respectively. Experiments were performed twice for S. paramamosain and four times for S. serrata using laboratory-raised juveniles. The juveniles were stocked in small containers, and the temperature was reduced or raised by 1°C every 24 h. The critical low or high temperatures (CLT or CHT) were estimated as the temperatures at which 50% of test juveniles ceased walking behaviour or died. The estimated CLT values for walking and survival were summarised as 8.4±0.7°C (mean±standard deviation) and 6.4±0.9°C in S. paramamosain and 9.6±0.6°C and 7.4±0.4°C in S. serrata, respectively. The CHT for walking could not be estimated, as almost all surviving juveniles exhibited walking behaviour, whereas the estimated CHT values for survival were summarised as 39.0±0.4°C in S. paramamosain and 39.1±0.6°C in S. serrata. Thus, interspecific variation in low-temperature adaptation was evident, and S. paramamosain are adapted to the lower-temperature environment.

著者

Noriko Azuma Masamichi Kuroda Yuichi Katogi Susumu Chiba

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.123-127, 2022-11-09 (Released:2022-11-09)

参考文献数

12

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We developed short tandem repeat markers for Palaemon septemtrionalis and tested their utility for analysing population genetics. Six markers were selected for their genotyping ability and suitability for population genetic analyses, and the genetic differences between two populations from different rivers were evaluated using these markers. The pairwise fixation index value between the two populations was 0.01756 (P=0.036), weak but statistically significant, suggesting a low level of genetic differentiation between the two populations. Although the results were not fully conclusive, we are confident these markers can be utilised for investigating the genetic population structure of P. septemtrionalis.

著者

Peter K. L. Ng Paul F. Clark

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.115-121, 2022-10-21 (Released:2022-10-21)

参考文献数

19

被引用文献数

1

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An un-named Eosamon Yeo & Ng, 2007 (Brachyura: Potamidae) specimen was discovered in the reference collection of the Natural History Museum, London. Further investigation of this freshwater crab proved it to be of interest because it is the first record of the genus from Cambodia and the male to be a hitherto undescribed Eosamon species. The new species, E. cambodiense n. sp., is here described, illustrated and compared with other congeners: E. brousmichei (Rathbun, 1904), E. paludosum (Rathbun, 1904), E. hafniensis (Bott, 1966), E. yotdomense (Naiyanetr, 1984), E. boonyaratae (Naiyanetr, 1987), E. phuphanense Naiyanetr, 1992, and E. nominathuis Yeo, 2010.

著者

Sota Nishimoto Katsuyuki Hamasaki Shigeki Dan

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.103-110, 2022-09-17 (Released:2022-09-17)

参考文献数

32

被引用文献数

3

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The red swamp crayfish Procambarus clarkii is an invasive alien species worldwide but it was commercially exploited. Laboratory studies have been conducted to examine the reproductive aspects of this species, pairing males and females for 1–5 days, as a basis for developing the control measures for invasive populations and improving aquaculture technologies. However, the effect of pairing periods on the mating and spawning success is largely unknown, and the present study therefore aimed to elucidate the effect of different periods (one, five and 10 days) in this species. The pairs were videorecorded for each entire pairing period, and the length of pairing did not significantly affect copulation or spawning. Copulation was prolific on the first day and its intensity was similar among the test groups, indicating that a one-day pairing period is sufficient for successful mating in P. clarkii under laboratory conditions.

著者

Kazuya Nagasawa Shigehiko Urawa

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.91-101, 2022-08-26 (Released:2022-08-26)

参考文献数

36

被引用文献数

3

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Two copepod parasites, Salmincola edwardsii (Olsson, 1869) and S. markewitschi Shedko & Shedko, 2002, were collected from salmonids in eastern Hokkaido, Japan: these copepods were taken from whitespotted char, Salvelinus leucomaenis (Pallas, 1814), and brook trout, S. fontinalis (Mitchill, 1814) in the Nishibetsu River, and Salmincola edwardsii from southern Asian Dolly Varden, Salvelinus malma krascheninnikova Taranetz, 1933, in the Ichani River. Both whitespotted char and brook trout are new Japanese hosts for Salmincola edwardsii, and the two rivers represent new locality records for S. edwardsii and S. markewitschi. The Nishibetsu River is regarded as a new southernmost distribution limit of S. edwardsii in Asia and is also recorded as the first locality of S. markewitschi infecting wild salmonids in Hokkaido. The morphology of S. edwardsii and S. markewitschi is reported based on adult female specimens collected from the salmonids.

著者

Karl J. Wittmann

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.55-89, 2022 (Released:2022-07-23)

参考文献数

53

被引用文献数

1

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Three ANDEEP expeditions yielded five Petalophthalmidae species of the genus Hansenomysis in 1030–3683 m depth on the floor of the Southern Ocean. Hansenomysis pseudophthalma sp. nov. is distinguished by features of the carapace, antenna, and telson. A fully adult specimen is first described for H. chini. A world key to the species of Hansenomysis is given. Unlike certain previous interpretations, the dactylus of thoracic endopods 3–5 has a single claw opposing a pair of modified paradactylary setae. Propodus and dactylus 6–8 are separate, not fused, and bear a smooth nail in all Hansenomysis species examined. Juveniles were available in three species and start with two bulb-shaped eye rudiments inside a common cuticular sheath forming a transverse bar. The bulbs then flatten, although a bulb-like formation persists until the adult stage; no eyeplate is formed. The carapace bears hepatic bulges resembling eyes in adult H. pseudophthalma and H. chini. The distal hyaline coat of bulges possibly represents lenses in H. pseudophthalma and H. sorbei. The modification of bulges is indicative of photophores, described for the first time here in the family Petalophthalmidae. The exclusive occurrence of mature photophores in adults points to possible role in reproductive behavior.

著者

Kazuya Nagasawa Kouki Mizuno

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.31-38, 2022-03-11 (Released:2022-03-11)

参考文献数

18

被引用文献数

1

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An ovigerous female of Argulus matuii Sikama, 1938 was collected from the body surface of a yellowfin seabream Acanthopagrus latus (Houttuyn, 1782) in a cove facing the Bungo Channel off Ehime Prefecture, western Japan. This represents a new host record for A. matuii, and the female collected is herein described. This female, which was fixed and preserved in 70% ethanol, showed a prominent body coloration, i.e., six streaks of yellow fringed with dark brown pigments, on the dorsal surface of the carapace even on 279th day (ca. nine months) after fixation, but the yellow streaks disappeared and the dark brown fringes were fading on 1675th day (ca. four years and seven months) after fixation. Thus, this paper reports on the usefulness of those yellow streaks in identification of A. matuii for a certain period after fixation but also emphasizes the importance of a detailed examination of morphological features in identification of long-term ethanol-preserved argulid specimens. The species is distinguished from the five marine congeners from Japan by its possession of numerous supporting rods in the marginal membranes of the first maxillae.