The ginbuna (Carassius langsdorfii), sometimes referred to as silver crucian carp or Japanese silver crucian carp, is a species of freshwaterfish in the carpfamily (family Cyprinidae).[1][2] It is native to lakes and rivers in Japan.[3]
The fish is believed to be named in honor of Georg Heinrich von Langsdorff, a Prussian naturalist and diplomat posted to Japan, who either collected or supplied holotype.[4]
Description
Ginbuna is a deep- and thick-bodied fish with a terminal mouth and a large caudal fin. It possesses 5 anal fin rays, 41–57 gill rakers, and has 28–31 large lateral line scales.[1] It reaches a maximum length of 39 centimetres (15in).[2]
The ginbuna can be difficult to distinguish from the common goldfish (Carassius auratus), to which it is closely related.[1] In fact, it has often been treated as a subspecies of goldfish. However, current genetic data suggests that the ginbuna is a distinct species.[6] The ginbuna commonly hybridizes with other species in its genus where they come into contact, as well as with the closely related common carp.[7]
It is believed that the ginbuna originated as a hybrid of two different species, although the parent species are unknown.[8]
Distribution and habitat
The ginbuna is native to Japan, where it is widespread,[6] but has been introduced to many other parts of the world. In Europe it has been confirmed in the Elbe River system in the Czech Republic, Greece, Germany, Ukraine, Italy, and the Neretva basin in Bosnia and Herzegovina.[9][10] Haplotype data indicates that European ginbuna derive from populations in either Honshu Island or the Ryukyu Islands, suggesting multiple introduction events.[10] Additionally, a 2018 study using mtDNA discovered the fish in Lake Tahoe, California and in a pond on the campus of the University of British Columbia, the first time this species has been found in North America.[7] Also in 2020, this species was reported for the first time in Iran after several specimens were collected from Siah Palas stream in Lar National Park. This is also the first record of this species from the Asian mainland.[11] These introductions may have been a result of ginbuna being unintentionally included with imports of goldfish or koi carp.[9]
Unusually among vertebrates, the ginbuna species has two different reproductive modes. The diploid form practices the usual sexual reproduction. However, the triploid and rare tetraploid forms practice a type of asexual reproduction known as gynogenesis, in which the sperm contributes no genetic material, but its presence is required for egg development.[3][14]
Importance to humans
The clonal nature of polyploid ginbuna makes them an ideal model fish for studying diseases of other cyprinid species.[15] This usefulness derives from the absence of genetic variance within the clone.[14]
↑ Kato, Eigo; Kasai, Akihiro; Tomochi, Hisayuki; Li, Ying-Chun; Sato, Hiroshi (2017). "Four Myxobolus spp. (Myxosporea: Bivalvulida) from the gill lamellae of common carp (Cyprinus carpio) and Japanese silver crucian carp (Carassius langsdorfii) in the western part of Japan, with the description of three new species (M. tanakai n. sp., M. paratoyamai n. sp., and M. ginbuna n. sp.)". Parasitology Research. 116 (9): 2427–2441. doi:10.1007/s00436-017-5545-4. PMID28681102.
1 2 Kalous, Lukáš; Slechtova, V.; Bohlen, Jörg; Petrtýl, Miloslav; Svatora, M. (March 2007). "First European record of Carassius langsdorfii from the Elbe basin". Journal of Fish Biology. 70: 132–138. Bibcode:2007JFBio..70S.132K. doi:10.1111/j.1095-8649.2006.01290.x.
1 2 Rylková, Kateřina; Kalous, Lukáš; Bohlen, Jörg; Lamatsch, Dunja K.; Petrtýl, Miloslav (2013). "Phylogeny and biogeographic history of the cyprinid fish genus Carassius (Teleostei: Cyprinidae) with focus on natural and anthropogenic arrivals in Europe". Aquaculture. 380–383: 13–20. Bibcode:2013Aquac.380...13R. doi:10.1016/j.aquaculture.2012.11.027.
↑ Khosravi, M., Abdoli, A., Ahmadzadeh, F., Saberi‐Pirooz, R., Rylková, K., & Kiabi, B. H. (2020). Toward a preliminary assessment of the diversity and origin of Cyprinid fish genus Carassius in Iran. Journal of Applied Ichthyology. https://doi.org/10.1111/jai.14039
1 2 Kajiwara, Yoko; Kashiwagi, Nobuhisa; Kadokami, Kiwao (2007). "Nationwide study of dioxins in the freshwater fish Carassius auratus ('gibelio) langsdorfii (crucian carp) in Japan: Concentrations and estimation of source contribution ratios". Chemosphere. 69 (8): 1177–1187. Bibcode:2007Chmsp..69.1177K. doi:10.1016/j.chemosphere.2007.06.034. PMID17675214.
↑ Yamazaki, M.; Tanizaki, Y.; Shimokawa, T. (1996). "Silver and other trace elements in a freshwater fish, Carassius auratus langsdorfii, from the Asakawa River in Tokyo, Japan". Environmental Pollution. 94 (1): 83–90. doi:10.1016/s0269-7491(96)00053-x. PMID15093521.
↑ Nanjo, A.; Shibata, T.; Saito, M.; Yoshii, K.; Tanaka, M.; Nakanishi, T.; Fukuda, H.; Sakamoto, T.; Kato, G.; Sano, M. (2017). "Susceptibility of isogeneic ginbuna Carassius auratus langsdorfii Temminck et Schlegel to cyprinid herpesvirus-2 (CyHV-2) as a model species". Journal of Fish Diseases. 40 (2): 157–168. Bibcode:2017JFDis..40..157N. doi:10.1111/jfd.12500. PMID27150547.
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