A Comparative Analysis of Copulatory Plugs in Muroid Rodents and Their Relationship to Copulatory Behavior

Hartung, Thomas G.; Dewsbury, Donald A.

doi:10.2307/1380136

Cited by 62 publications

(49 citation statements)

References 22 publications

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“…Copulatory plugs are a prominent feature in many internally fertilizing organisms, including nematodes (Barker, 1994;Palopoli et al, 2008), insects (Rogers et al, 2009), reptiles (Devine, 1975(Devine, , 1977Moreira and Birkhead, 2004), rodents (Voss, 1979;Dewsbury, 1984) and primates (Hartung and Dewsbury, 1978;Dixson and Anderson, 2002). Comparative studies suggest plugs evolved in the context of sperm competition, as a means for males to inhibit remating by females.…”

Section: Discussionmentioning

confidence: 99%

“…A large body of data suggest that plugs evolved to impede remating by females (Mosig and Dewsbury, 1970;Martan and Shepherd, 1976;Hartung and Dewsbury, 1978;Voss, 1979), although additional plug functions may include ejaculate transport through the female's reproductive tract (Blandau, 1945a,b,;Matthews and Adler, 1978;Toner et al, 1987;Carballada and Esponda, 1992;Rogers et al, 2009), stimulation required for proper implantation and pregnancy (Ball, 1934;Dean, 2013) and slow release of sperm (Asdell, 1946).…”

Section: Introductionmentioning

confidence: 99%

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Genetic and phenotypic influences on copulatory plug survival in mice

et al. 2015

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Across a diversity of animals, male seminal fluid coagulates upon ejaculation to form a hardened structure known as a copulatory plug. Previous studies suggest that copulatory plugs evolved as a mechanism for males to impede remating by females, but detailed investigations into the time course over which plugs survive in the female's reproductive tract are lacking. Here, we cross males from eight inbred strains to females from two inbred strains of house mice (Mus musculus domesticus). Plug survival was significantly affected by male genotype. Against intuition, plug survival time was negatively correlated with plug size: long-lasting plugs were small and relatively more susceptible to proteolysis. Plug size was associated with divergence in major protein composition of seminal vesicle fluid, suggesting that changes in gene expression may play an important role in plug dynamics. In contrast, we found no correlation to genetic variation in the protein-coding regions of five genes thought to be important in copulatory plug formation (Tgm4, Svs1, Svs2, Svs4 and Svs5). Our study demonstrates a complex relationship between copulatory plug characteristics and survival. We discuss several models to explain unexpected variation in plug phenotypes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic and phenotypic influences on copulatory plug survival in mice

et al. 2015

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“…At the time of ejaculation, the males of most species of rodents deposit a plug in the female's vaginal tract (see Hartung & Dewsbury, 1978;Voss, 1979). Such plugs can prevent subsequent matings in guinea pigs (Martan & Shepherd, 1976); the role in muroid rodents appears less absolute (Dewsbury & Baumgardner, in press).…”

mentioning

confidence: 99%

“…The multiple ejaculations of most species of muroid rodents appear necessary for pregnancy initiation (Dewsbury, 1978). Further, by attaining multiple ejaculations, males can be more effective in a sperm-competition situation than if they attain only a single ejaculation and search for other females (Dewsbury & Baumgardner, in press;Lanier, Estep, & Dewsbury, 1979;Oglesby, Lanier, & Dewsbury, 1981).…”

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confidence: 99%

On the function of the multiple-intromission, multiple-ejaculation copulatory patterns of rodents

Dewsbury

1981

Bull. Psychon. Soc.

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“…(1982) concluiram que o mesmo seja originário da coagulação do esperma do macho, desempenhando uma direta influência sobre o sucesso reprodutivo da espécie. Plugs copulatórios já foram registrados numa variedade de taxa, incluindo insetos (PARKER, 1970), ofídios (DEVINE, 1975), marsupiais (HARTMANN, 1924), insectívoros (EADIE, 1948), primatas (TINKLEPAUGH, 1930) e roedores (HARTUNG & DEWSBURY, 1978;BAUMGARDNER el 01.,1982;PEREIRA, 1982;DEWSBURY, 1988 dentre outros autores). Durante a Fase I, sempre que constatado, as fêmeas com plug foram consideradas grávidas, em início de gestação.…”

Section: Methodsunclassified

Ecologia de pequenos mamíferos silvestres da Mata Atlântica, Brasil: I. ciclos reprodutivos de Akodon cursor, Nectomys squamipes e Oryzomys nigripes (Rodentia, Cricetinae)

Pereira

Chagas²,

Costa³

1993

Rev. Bras. Zool.

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ABSTRACT. ECOLOGY OF SMALL MAMMALS FROM OE ATLANTIC FOREST, BRASIL. I. REPROOUTIVE CYCLE OF AKODON CURSOR, NECTOMYS SQUAMIPES ANO ORYZOMYS NIGRIPES (ROOENTIA, CRICETINAE). ln this work are determined lhe productive periods and the number of fixed embl)'os/pregnancy in the species of non-nying small mammals in four different stages of regeneration of the Atlantic Forest in Silva Jardim and Casimiro de Abreu (Rio de Janeiro). Akodon cursor, Nectornys squarnipes and Oryzornys nigripes showed repeated oestrus in ali seasons. To A. cursor the average number in ten parturitions was of 3.6 youngs; in six parturitions N. squarnipes and O. nigripes it was of 3.5 and 4.0youngs, respectively. ln these three species, the embl)'os fixed rather in the right horn of the uterus. KEY WORDS. Rodentia, Cricetinae, Atlantic forest , ecologyAs informações disponíveis sobre a biologia reprodutiva, da quase totalidade das espécies neotropicais de pequenos mamíferos não-voadores (adultos com peso < 2kg), são escassas até o presente.De alto significado ecológico, a biologia reprodutiva reveste-se de particular importância na Mata Atlântica, onde extensas áreas vem sendo continuamente devastadas, encontrando-se espécies, em inúmeros casos, taxonomicamente controvertidas ou mesmo ainda não descritas.Com animais iniciais provenientes de outras formações vegetais brasileiras, alguns autores abordaram a ontogenia pós-natal e reprodutiva de algumas espécies sob condições de laboratório. Desses estudos, desenvolvidos em co lônias já normalizadas, destacam-se os trabalhos de: JUSTINES & JOHNSON (1969) e MELO (1978a) em Calomys cal/osus; (1978b) em Oryzomys nigripes (= eliurns); LACHER (1979) em Kerodol1 nlpeslris; MELO & CAVALCANTI (1982) em Bolomys lasiurns( = Zygodontomys); e VILLELA & ALHO (1983) em Oryzomys subj7avus.

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A Comparative Analysis of Copulatory Plugs in Muroid Rodents and Their Relationship to Copulatory Behavior

Cited by 62 publications

References 22 publications

Genetic and phenotypic influences on copulatory plug survival in mice

Genetic and phenotypic influences on copulatory plug survival in mice

On the function of the multiple-intromission, multiple-ejaculation copulatory patterns of rodents

Ecologia de pequenos mamíferos silvestres da Mata Atlântica, Brasil: I. ciclos reprodutivos de Akodon cursor, Nectomys squamipes e Oryzomys nigripes (Rodentia, Cricetinae)

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