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Titolo:
Difference in parasite load and nonspecific immune reaction between sexualand gynogenetic forms of Carassius auratus
Autore:
Hakoyama, H; Nishimura, T; Matsubara, N; Iguchi, K;
Indirizzi:
Kyushu Univ, Fac Sci, Dept Biol, CREST,Japan Sci & Technol Corp,JST, Fukuoka 8128581, Japan Kyushu Univ Fukuoka Japan 8128581 chnol Corp,JST, Fukuoka 8128581, Japan
Titolo Testata:
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
fascicolo: 3, volume: 72, anno: 2001,
pagine: 401 - 407
SICI:
0024-4066(200103)72:3<401:DIPLAN>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
POECILIOPSIS PISCES-POECILIIDAE; RED QUEEN HYPOTHESIS; UNISEXUAL FISH; POPULATION; EVOLUTION; MAINTENANCE; ECOLOGY; CLONES; ORIGIN; SNAIL;
Keywords:
Carassius auratus; coexistence; gynogenesis; nonspecific immune reaction; parasite load;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Hakoyama, H Hokkaido Natl Fisheries Res Inst, Kasurakoi 116, Kushiro 0850802, Japan Hokkaido Natl Fisheries Res Inst Kasurakoi 116 Kushiro Japan 0850802
Citazione:
H. Hakoyama et al., "Difference in parasite load and nonspecific immune reaction between sexualand gynogenetic forms of Carassius auratus", BIOL J LINN, 72(3), 2001, pp. 401-407

Abstract

For coexistence, the sexual form in sexual/asexual complexes needs short-term advantages that can compensate for the two-fold disadvantage of sex. Higher mortality in the asexual form due to a higher parasite load will provide an advantage to the sexual form. In Lake Suwa, Japan, the parasite load (Metagonnimus sp.; Trematoda) of triploid gynogenetic females of Carassius auratus was significantly higher than that of diploid sexual females. In animmunoassay using healthy wild fish that were conditioned for 1 month in laboratory tanks, the nitroblue tetrazolium (NBT) immune reaction of sexual females was significantly higher than that of gynogenetic females. The NET activity indicates the abundance of oxygen radicals from phagocytes, and hence the level of immune activity of the phagocytes. We suggest that the higher parasite load of the gynogenetic form is in part due to the lower immune activity of the phagocytes (nonspecific immune reaction) in the gynogenetic form compared to the sexual form. (C) 2001 The Linnean Society of London.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 08:09:12