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Titolo:
Viability, growth and external morphology of meiotic- and mitotic-gynogenetic diploids in red sea bream, Pagrus major
Autore:
Kato, K; Murata, O; Yamamoto, S; Miyashita, S; Kumai, H;
Indirizzi:
Kinki Univ, Fisheries Lab, Wakayama 649221, Japan Kinki Univ Wakayama Japan 649221 , Fisheries Lab, Wakayama 649221, Japan
Titolo Testata:
JOURNAL OF APPLIED ICHTHYOLOGY
fascicolo: 3, volume: 17, anno: 2001,
pagine: 97 - 103
SICI:
0175-8659(200106)17:3<97:VGAEMO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYPRINUS-CARPIO L; PLOIDY MANIPULATION; RAINBOW-TROUT; AYU; SUPPRESSION; CHARACTERS; INDUCTION; MARKER; FISHES; CLONES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Kato, K Kinki Univ, Fisheries Lab, 3153 Shirahama, Wakayama 649221, Japan Kinki Univ 3153 Shirahama Wakayama Japan 649221 ama 649221, Japan
Citazione:
K. Kato et al., "Viability, growth and external morphology of meiotic- and mitotic-gynogenetic diploids in red sea bream, Pagrus major", J APP ICHTH, 17(3), 2001, pp. 97-103

Abstract

Two types of gynogenetic diploids were artificially induced in the red seabream (Pagrus major Temminck et Schlegel), either by suppressing the firstcell cleavage (mitotic-G2N) or by retaining the second polar body (meiotic-G2N). The eggs of red sea bream were inseminated with UV-irradiated (3000 erg mm(-2)) sperm of Japanese parrot fish (Oplegnathus fasciatus Temminck et Schlegel), and hydrostatic pressure shock of 700 kg cm(-2) for 5.5 min at46 min after insemination (naitotic-G2N) and cold shock of 1 degreesC for 30 min at 3 min after insemination (meiotic-G2N) were applied to the eggs, sequentially, The total hatching rate and hatching rate of normal larvae ofthe normal diploid, meiotic-G2N and mitotic-G2N were 86.5 and 94.9%, 38.1 and 45.8%, and 12.8 and 35.0%, respectively. The induction of mitotic-G2N was confirmed by isozyme marker analysis. The standard deviations, variancesand coefficients of variation of the body weight, standard length and bodydepth in 91-day-old juveniles were always large in mitotic-G2N, small in normal-2N and intermediate in meiotic-G2N. The variances in the number of pectoral fin rays and caudal fin rays of mitotic-G2N were significantly higher than those of normal-2N. The incidences of deformities were highest in the mitotic-G2N group. The survival rates and growth performance of the meiotic- and mitotic-G2N were significantly lower than those of normal-2N. Both G2N survived for 3 years to the adult stage.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 08:20:49