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Titolo:
Effects of courtship and relative mate size on sexual motivation in Atlantic salmon
Autore:
de Gaudemar, B; Bonzom, JM; Beall, E;
Indirizzi:
INRA, Stn Hydrobiol, F-64310 St Pee Sur Nivelle, France INRA St Pee Sur Nivelle France F-64310 -64310 St Pee Sur Nivelle, France
Titolo Testata:
JOURNAL OF FISH BIOLOGY
fascicolo: 2, volume: 57, anno: 2000,
pagine: 502 - 515
SICI:
0022-1112(200008)57:2<502:EOCARM>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
LANDLOCKED RED SALMON; ONCORHYNCHUS-NERKA; SPAWNING BEHAVIOR; REPRODUCTIVE-BEHAVIOR; VIBRATIONAL COMMUNICATION; GASTEROSTEUS-ACULEATUS; COLOR PATTERNS; PACIFIC SALMON; SOCKEYE SALMON; CHOICE;
Keywords:
Atlantic salmon; spawning behaviour; stimulus-reaction; courtship; mate size; mate choice; sexual selection;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Beall, E INRA, Stn Hydrobiol, BP 3, F-64310 St Pee Sur Nivelle, France INRA BP 3 St Pee Sur Nivelle France F-64310 Sur Nivelle, France
Citazione:
B. de Gaudemar et al., "Effects of courtship and relative mate size on sexual motivation in Atlantic salmon", J FISH BIOL, 57(2), 2000, pp. 502-515

Abstract

Both sexes of Atlantic salmon Salmo salar were very sensitive to the absence of their mate on the spawning ground, particularly females during the last hour before oviposition. The improvement of behavioural chaining just before oviposition might elicit the accurate timing of synchronized gamete release for successful fertilization. While the reproductive behaviour of theopposite sex could largely affect breeding activity, relative mate size appeared to be the prevailing sexual motivation factor in this species. Even in the absence of courtship, large mate size may constitute a supra-stimulus inducing an increase in spawning behaviour of the other sea. Females withsmaller males delayed their first spawning activity, took longer to spawn and made more nests than those: with large males. However, female egg retention was not influenced by relative male size. (C) 2000 The Fisheries Society of the British Isles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 12:06:31