Faculty Profiles - NAKATA Kazuyoshi

Artificial burrow sizes for capturing the North American invasive crayfish Procambarus clarkii. Reviewed

Other Link： https://jlc.jst.go.jp/DN/JLC/20017078595?from=CiNii

Capture of the North American invasive crayfish Procambarus clarkii by using artificial burrows of preferred sizes Reviewed

Haruna Ushimi, Rika Shiraishi, Kazuyoshi Nakata

Ecology and Civil Engineering 18 ( 2 ) 139 - 145 2015

USHIMI Haruna, MIYATAKE Yuta, TSUTSUI Naoaki, SAKAMOTO Tatsuya, NAKATA Kazuyoshi

Ecology and Civil Engineering 18 ( 2 ) 79 - 86 2015

Authorship：Corresponding author Language：Japanese Publisher：Ecology and Civil Engineering Society

We conducted aquarium experiments of artificial burrow preference by the North American invasive crayfish Procambarus clarkii to clarify the artificial burrow sizes for capturing P. clarkii in invaded freshwater areas （e.g., paddy fields, agricultural channels, rivers, lakes, ponds, etc.）. In the aquarium experiments, we observed the preference for internal diameters and lengths of artificial burrows by P. clarkii, which were made from straight polyvinyl chloride pipes. The relationship between the total length （TL）（X, mm） of P. clarkii and the preferred internal diameter （Y, mm） of artificial burrows was described by the significant linear regression: Y＝0.58X＋4.26（ n＝49, P＜0.001）. Among the artificial burrows of different lengths, TL×4 burrows were mainly preferred by P. clarkii. Based on these results, we propose artificial burrow sizes for use to eradicate P. clarkii.

DOI： 10.3825/ece.18.79

Specimens of the Japanese native crayfish Cambaroides japonicus (De Haan, 1841) and ectosymbiotic crayfish worms (Branchiobdellida) collected from Lake Akan in Hokkaido, northern Japan, in 1872: observation of the specimens preserved by Dr. Saburo Hatta Reviewed

Cage traps and baits for capturing the North American invasive crayfish Procambarus clarkii Reviewed

Rika Shiraishi, Haruna Ushimi, Kazuyoshi Nakata

Ecology and Civil Engineering 18 ( 2 ) 115 - 125 2015

NAKATA Kazuyoshi, NAGANO Yuki, OHASHI Shinpei, KAWAI Toshio, OHTAKA Akifumi

Japanese Journal of Benthology 69 ( 2 ) 90 - 94 2014

Authorship：Lead author,　Corresponding author Language：English Publisher：JAPANESE ASSOCIATION OF BENTHOLOGY

In Lake Akan, Hokkaido, northern Japan, the local population of the native and endangered Japanese crayfish Cambaroides japonicus (De Haan, 1841) is extinct, whereas the signal crayfish Pacifastacus leniusculus (Dana, 1852), an invasive species from North America, has become established and rapidly increased. This study provides information about specimens of C. japonicus preserved by Dr. Saburo Hatta from the lake in 1872. The six specimens (two males and four non-ovigerous females) are valuable evidence of C. japonicus formerly inhabiting Lake Akan. The body sizes of the specimens were 24.4–29.5 mm in carapace length and 55.7–67.4 mm in total length, and the estimated age of the largest specimen was ten years, indicating that Lake Akan of that time provided a suitable habitat. Twenty-two ectosymbiotic crayfish worms (Annelida, Clitellata, Branchiobdellida) were found attached to the specimens. Three branchiobdellidan species were identified: Cirrodrilus cirratus Pierantoni, 1905, C. inukaii (Yamaguchi, 1934) and C. megalodentatus (Yamaguchi, 1934). This is the first record of the latter two species from Lake Akan.

DOI： 10.5179/benthos.69.90

Factors affecting distribution of freshwater shrimps and prawns in the Hiwasa River, southern central Japan Reviewed

Other Link： https://jlc.jst.go.jp/DN/JLC/20006922885?from=CiNii

M. Saito, T. Yamashiro, T. Hamano, K. Nakata

Crustacean Research 41 27 - 46 2012

Established Habitats and Origin of the Invasive Signal Crayfish Pacifastacus leniusculus in Akashina, Azumino City, Nagano Prefecture, Japan Reviewed

KUMAKAWA Shinji, NAKATA Kazuyoshi, KAWAI Tadashi

Plankton and Benthos Research 66 ( 1 ) 26 - 32 2011

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JAPANESE ASSOCIATION OF BENTHOLOGY

Official documents and archives suggest that the alien crayfish Pacifastacus leniusculus (Dana, 1852) was introduced into Japan from North America on five occasions from 1926 to 1930, and populations have survived in Hokkaido, Nagano, and Shiga Prefectures. The chemical conditions and biological environment of an established habitat near their original a release point in Akashina, Azumino City, Nagano Prefecture, were surveyed on four occasions in 1998 and 1999. Water quality (pH, DO, BOD) and WT were recorded seasonally at each of eight stations, and crayfish and other aquatic macro-organisms were collected. Some predatory fishes (Oncorhynchus mykiss, Anguilla japonica, and Lepomis macrochirus) that might actively eat juveniles of P. leniusculus were recorded. Individual density of P. leniusculus was relatively low compared to its other habitats in Japan. Only 52 crayfish were collected during this study, on 19 of 32 sampling occasions (eight sites, four times each). The shape of the acumen and the species composition of ectosymbiotic crayfish worms (Annelida: Clitellata: Branchiobdellidae) can be used as tools to trace the origin of introduced of P. leniusculus in Japan. The present crayfish from Nagano Prefecture have a relatively short acumen, different from those of specimens from Shiga and Hokkaido Prefectures. Furthermore, the crayfish worm Xironogiton victoriensis occurs only on crayfish from Akashina, Nagano Prefecture. The dates of introduction of P. leniusculus in Nagano (1926, 1929) also differ from those for Hokkaido (1930) and Shiga Prefecture (1926). These findings suggest that the regional population of P. leniusculus in Nagano has a different origin than those in Shiga and Hokkaido, having originated from crayfish that were introduced independently from North America.

DOI： 10.5179/benthos.66.26