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Titolo:
SELFING AND BIPARENTAL INBREEDING - A MATING SYSTEM-ANALYSIS IN LYMNAEA-PEREGRA (GASTROPODA, LYMNAEIDAE)
Autore:
COUTELLECVRETO MA; MADEC L; GUILLER A;
Indirizzi:
UNIV RENNES 1,UMR CNRS 6553,LAB ZOOL & ECOPHYSIOL,UA INRA,CAMPUS BEAULIEU,AV G LECLERC F-35042 RENNES FRANCE UNIV RENNES 1,LAB PARASITOL PHARMACEUT,UMR CNRS 6553 F-35043 RENNES FRANCE
Titolo Testata:
Heredity
, volume: 79, anno: 1997,
parte:, 3
pagine: 277 - 285
SICI:
0018-067X(1997)79:<277:SABI-A>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRESH-WATER SNAIL; CORRELATED MATINGS; MIMULUS-GUTTATUS; OUTCROSSING RATE; DEPRESSION; FERTILIZATION; POPULATIONS; PLANORBIDAE; PULMONATA; EVOLUTION;
Keywords:
ALLOZYMES; FRESH-WATER SNAIL; HERMAPHRODITISM; INBREEDING; MATING SYSTEM; PROGENY ARRAY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
M.A. Coutellecvreto et al., "SELFING AND BIPARENTAL INBREEDING - A MATING SYSTEM-ANALYSIS IN LYMNAEA-PEREGRA (GASTROPODA, LYMNAEIDAE)", Heredity, 79, 1997, pp. 277-285

Abstract

The mating system was analysed in three populations of Lymnaea peregra, under the mixed-mating model (MMM) and the effective selfing model (ESM), using progeny array data and allozyme markers. The results revealed variation among populations for the outcrossing rate (t(m) rangedfrom 0.646 to 0.983). This finding modifies the earlier classification of L. peregra as a predominantly outcrossing species. The occurrenceof biparental inbreeding and population substructure in one of three populations was suggested from positive (t(m) - t(s)) under the MMM, covariation of the effective selfing rate with parental fixation index,as well as the great difference between the effective selfing rate ofinbred and outbred parents under the ESM. The within-population distribution of the outcrossing rates varied extensively and may involve different patterns of selection and levels of inbreeding depression among the populations studied. Consistently, the estimation of correlated matings showed different levels of the correlation of selfing within progenies in the three populations. Levels of multiple paternity for the outcrossed progeny were positively associated with higher populationoutcrossing rates, which may reflect the propensity of preferential outcrossers to copulate actively.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 08:00:32