Body Size and Paternity in a Teiid Lizard (Ameiva exsul)

Lewis, Allen R.; Tirado, Grissell; Sepúlveda, José

doi:10.2307/1565246

Cited by 27 publications

(17 citation statements)

References 27 publications

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“…If a female was accompanied by only one male, we allocated the paternity of her entire litter to him. The four studies that have analyzed paternity using molecular markers in lizard populations in a very similar nonterritorial mating system, as in snow skinks, concluded that male proximity to a female was highly indicative of paternity in that female's clutch (Abell 1997;Gullberg et al 1997;Bull et al 1998;Lewis et al 2000). Furthermore, in all four studies there was high extrapair paternity, even in the scincid lizard Tiliqua rugosa, which shows unusually long pair bonds that may last several years (Bull et al 1998).…”

Section: Discussionmentioning

confidence: 97%

Sexual Dimorphism in Lizard Body Shape: The Roles of Sexual Selection and Fecundity Selection

et al. 2002

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Sexual dimorphism is widespread in lizards, with the most consistently dimorphic traits being head size (males have larger heads) and trunk length (the distance between the front and hind legs is greater in females). These dimorphisms have generally been interpreted as follows: (1) large heads in males evolve through male-male rivalry (sexual selection); and (2) larger interlimb lengths in females provide space for more eggs (fecundity selection). In an Australian lizard (the snow skink, Niveoscincus microlepidotus), we found no evidence for ongoing selection on head size. Trunk length, however, was under positive fecundity selection in females and under negative sexual selection in males. Thus, fecundity selection and sexual selection work in concert to drive the evolution of sexual dimorphism in trunk length in snow skinks.

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Section: Discussionmentioning

confidence: 97%

Sexual Dimorphism in Lizard Body Shape: The Roles of Sexual Selection and Fecundity Selection

et al. 2002

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“…Based on the mating system characteristic of macroteiids (Pianka and Vitt 2003), it is almost certain that some degree of non-random mating occurs in this lizard. Non-random mating is known in Ameiva exsul (Lewis et al 2000;Censky 1995), one of the two closest relatives of A. polops (Hurtado et al unpublished), and also in Ameiva plei, another West Indian Ameiva, in which larger males sire the majority of the progeny (Lewis et al 2000;Censky 1995).…”

Section: Null Alleles and Deviations From Hwementioning

confidence: 99%

Conservation genetics of the Critically Endangered Saint Croix ground lizard (Ameiva polops Cope 1863)

2012

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“…Siring success may also be influenced by male size. Higher paternity success for larger males can be the result of their success in dominance interactions with other males and/or female preference for these males (Huck & Banks, 1982; Watson et al ., 1992; Berteaux et al ., 1999; Fisher & Lara, 1999; Lewis et al ., 2000). For example, in the sand lizard, heavier males sire more offspring, even when possible effects of testis size/sperm quantity are standardized (Gullberg et al ., 1997).…”

Section: Introductionmentioning

confidence: 99%

Factors influencing paternity success in Antechinus agilis: last-male sperm precedence, timing of mating and genetic compatibility

Kraaijeveld-Smit

Ward

Temple-Smith

et al. 2002

Journal of Evolutionary Biology

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We describe the patterns of paternity success from laboratory mating experiments conducted in Antechinus agilis, a small size dimorphic carnivorous marsupial (males are larger than females). A previous study found last‐male sperm precedence in this species, but they were unable to sample complete litters, and did not take male size and relatedness into account. We tested whether last‐male sperm precedence regardless of male size still holds for complete litters. We explored the relationship between male mating order, male size, timing of mating and relatedness on paternity success. Females were mated with two males of different size with either the large or the small male first, with 1 day rest between the matings. Matings continued for 6 h. In these controlled conditions male size did not have a strong effect on paternity success, but mating order did. Males mating second sired 69.5% of the offspring. Within first mated males, males that mated closer to ovulation sired more offspring. To a lesser degree, variation appeared also to be caused by differences in genetic compatibility of the female and the male, where high levels of allele‐sharing resulted in lower paternity success.

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Body Size and Paternity in a Teiid Lizard (Ameiva exsul)

Cited by 27 publications

References 27 publications

Sexual Dimorphism in Lizard Body Shape: The Roles of Sexual Selection and Fecundity Selection

Sexual Dimorphism in Lizard Body Shape: The Roles of Sexual Selection and Fecundity Selection

Conservation genetics of the Critically Endangered Saint Croix ground lizard (Ameiva polops Cope 1863)

Factors influencing paternity success in Antechinus agilis: last-male sperm precedence, timing of mating and genetic compatibility

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