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Titolo:
Variability for mixis initiation in Brachionus plicatilis
Autore:
Aparici, E; Carmona, MJ; Serra, M;
Indirizzi:
Univ Valencia, Inst Cavanilles Biodiversitat & Biol Evolut, E-46071 Valencia, Spain Univ Valencia Valencia Spain E-46071 iol Evolut, E-46071 Valencia, Spain
Titolo Testata:
HYDROBIOLOGIA
, volume: 446, anno: 2001,
pagine: 45 - 50
SICI:
0018-8158(200103)446:<45:VFMIIB>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYCLICAL PARTHENOGENS; ASEXUAL REPRODUCTION; RESTING EGGS; ROTIFERS; DENSITY; POPULATION; PATTERNS; GROWTH; MULLER;
Keywords:
rotifers; sexual reproduction; mixis initiation; intraspecific variability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Serra, M Univ Valencia, Inst Cavanilles Biodiversitat & Biol Evolut, Apartat 22085,E-46071 Valencia, Spain Univ Valencia Apartat 22085 Valencia Spain E-46071 lencia, Spain
Citazione:
E. Aparici et al., "Variability for mixis initiation in Brachionus plicatilis", HYDROBIOL, 446, 2001, pp. 45-50

Abstract

Deductions from both evolutionary models and inductive argumentation from empirical data support the notion of intraspecific variability for the initiation of sexual reproduction (mixis) within rotifer populations. In this study, we focus on the time and density at which mixis is initiated in a growing population. Cyclical parthenogenetic clones of Brachionus plicatilis established by hatching of resting eggs, isolated from a natural habitat, have been tested at the start of their sexual phase. Clones exhibited great variation for this trait, their time of switching to sexual reproduction being correlated with population density. Most of the variation for mixis initiation has either low or no heritability and is caused by individual environmental factors.

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Documento generato il 04/12/20 alle ore 01:15:41