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Titolo:
Evolutionary genetics and ecology of sperm-dependent parthenogenesis
Autore:
Beukeboom, LW; Vrijenhoek, RC;
Indirizzi:
Leiden Univ, Inst Evolutionary & Ecol Sci, NL-2300 RA Leiden, Netherlands Leiden Univ Leiden Netherlands NL-2300 RA NL-2300 RA Leiden, Netherlands Rutgers State Univ, Ctr Theoret & Appl Genet, New Brunswick, NJ 08903 USA Rutgers State Univ New Brunswick NJ USA 08903 New Brunswick, NJ 08903 USA
Titolo Testata:
JOURNAL OF EVOLUTIONARY BIOLOGY
fascicolo: 6, volume: 11, anno: 1998,
pagine: 755 - 782
SICI:
1010-061X(199811)11:6<755:EGAEOS>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
LUMBRICILLUS-LINEATUS ENCHYTRAEIDAE; POECILIOPSIS PISCES-POECILIIDAE; R-LOCUS GENES; UNISEXUAL FISH; GENUS POECILIOPSIS; MITOCHONDRIAL-DNA; GYNOGENETIC FISH; ABERRANT SEGREGATION; INCOMPATIBLE CROSSES; POPULATION-DYNAMICS;
Keywords:
gynogenesis; hybridogenesis; mating system; pseudogamy; sperm-dependent parthenogenesis;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
172
Recensione:
Indirizzi per estratti:
Indirizzo: Beukeboom, LW Leidenherlandsnst Evolutionary & Ecol Sci, POB 9516, NL-2300RA Leiden, Net Leiden Univ POB 9516 Leiden Netherlands NL-2300 RA den, Net
Citazione:
L.W. Beukeboom e R.C. Vrijenhoek, "Evolutionary genetics and ecology of sperm-dependent parthenogenesis", J EVOL BIOL, 11(6), 1998, pp. 755-782

Abstract

Sperm-dependent (or pseudogamous) forms of parthenogenetic reproduction occur in a wide variety of animals. Inheritance is typically clonal and matroclinous (of female descent), but sperm are needed to initiate normal development. As opposed to true parthenogenesis (i.e., sperm-independent reproduction), pseudogamous parthenogenetic lineages must coexist with a 'sperm donor' - e.g., males from a conspecific sexual lineage, conspecific hermaphrodites, or males from a closely related sexual species. Such sperm donors do not contribute genetically to the next generation. The parasitic nature of sperm-dependent parthenogenesis raises numerous ecological and evolutionaryquestions. How do they arise? What factors help stabilize coexistence between the pseudogamous parthenogens and their sperm donors (i.e.,'sexual hosts')? Why do males waste sperm on the asexual females? Why does true parthenogenesis not evolve in pseudogamous lineages and free them from their dependency on sperm donors? Does pseudogamous parthenogenesis provide compensatory benefits that outweigh the constraints of sperm-dependence? Herein, we consider some genetic, ecological, and geographical consequences of sperm-dependent parthenogenesis in animals.

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Documento generato il 18/09/20 alle ore 16:49:29