Kazuya Nagasawa
Hiroshima University
329 Papers
1.8K Citations
Kazuya Nagasawa is an academic researcher from Hiroshima University. The author has contributed to research in topics: Biology & Oncorhynchus. The author has an hindex of 27, co-authored 317 publications. Previous affiliations of Kazuya Nagasawa include Virginia Institute of Marine Science & University of Tokyo.
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Papers
The identity of Limnoncaea diuncata Kokubo, 1914 (Copepoda : Poecilostomatoida) from Hokkaido, Japan, with the relegation of Diergasilus Do, 1981 to a junior synonym of Thersitina Norman, 1905
TL;DR: Both sexes of an ergasilid copepod, Limnoncaea diuncata Kokubo, 1914, are redescribed based on planktonic specimens collected from the type-locality in Hokkaido, Japan.
Description of the male of Prosaetes rhinodontis (Wright, 1876) (Crustacea, Copepoda, Siphonostomatoida), with a proposal to synonymize Cecropidae Dana, 1849 and Amaterasidae Izawa, 2008 with Pandaridae Milne Edwards, 1840
Danny Tang,George W. Benz,Kazuya Nagasawa +2 more
- 17 Dec 2012
TL;DR: This report provides the first description of the male of Prosaetes rhinodontis (Wright, 1876) based on specimens collected from two whale sharks held in sea pens off the west coast of Okinawa-jima Island, Japan and proposes Lewis’ specimens represent a new species, which is named Amaterasia lewisi n.
Utilization of alien freshwater fishes by the parasitic copepod Neoergasilus japonicus (Ergasilidae) on Okinawa-jima Island, Japan, with a list of its known hosts
Kazuya Nagasawa,Daisuke Uyeno +1 more
- 17 Dec 2012
TL;DR: It is shown that this low host-specific species can persist by utilizing alien fishes as hosts even after the native fishes have either disappeared or greatly decreased in abundance.
An Alien Monogenean, Ligictaluridus pricei (Platyhelminthes: Ancyrocephalidae), Parasitic on the Channel Catfish Ictalurus punctatus (Actinopterygii: Siluriformes: Ictaluridae) in Japan
Masato Nitta,Kazuya Nagasawa +1 more
TL;DR: The alien monogenean Ligictaluridus pricei (Mueller, 1936), parasitic on the gills of the channel catfish Ictalurus punctatus, is described from Lake Kasumigaura, Ibaraki Prefecture, central Honshū, Japan, as a new country record.
Occurrence and Habitats of the Giant Mottled Eel Anguilla marmorata (Anguilliformes, Anguillidae) in Rivers of Ehime Prefecture, Japan
Kouki Mizuno,Kazuya Nagasawa +1 more
- 20 Oct 2010
TL;DR: A total of 45 giant mottled eels were collected from July 1997 to March 2010 in the freshwater lower reach of the Renjoji River in Ehime Prefecture, Shikoku Island, Japan, indicating that the species was in quite low abundance in this river.