The Relationship Between Sexual Size Dimorphism and Habitat Use in Greater Antillean Anolis Lizards

Butler, Marguerite A.; Schoener, Thomas W.; Losos, Jonathan B.

doi:10.1554/0014-3820(2000)054[0259:trbssd]2.0.co;2

Cited by 144 publications

(272 citation statements)

References 85 publications

Supporting

Mentioning

257

Contrasting

Unclassified

Order By: Relevance

“…Anoles vary considerably in the extent of sexual dimorphism in body size (Schoener 1969;Stamps 1983;Butler et al 2000), ranging from species in which the sexes are the same size to others in which adult males are more than three times the mass of adult females. The sexes also differ in eco-morphologically relevant proportions of various parts of the body, under the hypothesis that the habitat places constraints on morphology (Schoener 1967;Butler & Losos 2002;Butler et al 2007).…”

Section: Differences In Sexual Dimorphismmentioning

confidence: 99%

Morphometric and genetic divergence in island and mainland populations ofAnolis nebulosus(Squamata: Polychrotidae) from Jalisco (Mexico): an instance of insular gigantism

Senczuk

García

Colangelo

et al. 2014

Italian Journal of Zoology

View full text Add to dashboard Cite

The clouded anole Anolis nebulosus (Squamata: Polychrotidae) is widespread on the Pacific coast of Mexico. The species also inhabits Don Panchito, a small islet located near the coast of the Chamela-Cuixmala Biosphere Reserve in the state of Jalisco. We studied the extent of intraspecific differences in morphology (absolute size and body proportions) and in mtDNA sequences (16S and NDH2) between the population living on the islet (N = 18 for morphometry; N = 12 for mtDNA) and the one on the facing mainland (N = 38 for morphometry; N = 16 for mtDNA). The individuals on the islet are larger than those on the mainland with little overlap in size for either males (islet: 52.79 ± 1.82 mm; mainland: 40.96 ± 2.99 mm) or females (islet: 46.18 ± 3.24 mm; mainland 37.14 ± 2.13 mm). The presence of insular gigantism, as here found in A. nebulosus, seems uncommon in the genus and could be explained as a combination of low predation pressure and higher intraspecific competition on the island. Moreover, we found that sexual dimorphism (SD) is higher in the island population than in the mainland one. The molecular analysis shows the absence of shared haplotypes between the island and mainland populations. Ten mtDNA haplotypes belonged to the mainland population and three to the island population. The shape of the minimum spanning network and of the mismatch distribution indicates a single colonization event. These molecular data indicate a certain degree of isolation of the island population notwithstanding its proximity to the coast. The morphological characteristics of the anoles on Don Panchito match with the expectation of the so-called "reversed island syndrome" theory, which predicts an increased body size and sexual dimorphism in lizards living on very small islands characterized by unpredictable environmental conditions.

show abstract

Section: Differences In Sexual Dimorphismmentioning

confidence: 99%

Morphometric and genetic divergence in island and mainland populations ofAnolis nebulosus(Squamata: Polychrotidae) from Jalisco (Mexico): an instance of insular gigantism

Senczuk

García

Colangelo

et al. 2014

Italian Journal of Zoology

View full text Add to dashboard Cite

show abstract

“…A major problem is the lack of unambiguous evidence in support of his hypothesis, despite numerous examples of sexual differences in resource use (Temeles 1986;Shine 1989;Butler et al 2000;Pearson et al 2002). One reason for the paucity of evidence is that for the sexes of many species (e.g.…”

Section: Introductionmentioning

confidence: 99%

Evolution of sexual dimorphism in bill size and shape of hermit hummingbirds (Phaethornithinae): a role for ecological causation

Temeles

Miller

Rifkin

2010

Phil. Trans. R. Soc. B

View full text Add to dashboard Cite

Unambiguous examples of ecological causation of sexual dimorphism are rare, and the best evidence involves sexual differences in trophic morphology. We show that moderate female-biased sexual dimorphism in bill curvature is the ancestral condition in hermit hummingbirds (Phaethornithinae), and that it is greatly amplified in species such as Glaucis hirsutus and Phaethornis guy, where bills of females are 60 per cent more curved than bills of males. In contrast, bill curvature dimorphism is lost or reduced in a lineage of short-billed hermit species and in specialist Eutoxeres sicklebill hermits. In the hermits, males tend to be larger than females in the majority of species, although size dimorphism is typically small. Consistent with earlier studies of hummingbird feeding performance, both raw regressions of traits and phylogenetic independent contrasts supported the prediction that dimorphism in bill curvature of hermits is associated with longer bills. Some evidence indicates that differences between sexes of hermit hummingbirds are associated with differences in the use of food plants. We suggest that some hermit hummingbirds provide model organisms for studies of ecological causation of sexual dimorphism because their sexual dimorphism in bill curvature provides a diagnostic clue for the food plants that need to be monitored for studies of sexual differences in resource use.

show abstract

“…However, natural selection can also explain sex differences in body size if males and females have different niches (Butler et al 2000, Mysterud 2000, Blondel et al 2002, Pérez-Barbería et al 2002. Differences in emergence and maturation times between females and males could explain SSD.…”

Section: Introductionmentioning

confidence: 99%

Size-Dependent Selection on Arrival Times in Sticklebacks: Why Small Males Arrive First

Candolin

Voigt

2003

Evolution

View full text Add to dashboard Cite

Studies on arrival time to breeding areas show that high‐quality males usually arrive first and gain the highest reproductive success. This is generally assumed to be due to phenotype‐dependent costs and benefits of early arrival. We show that the opposite arrival order can occur, probably due to selection on poor‐quality males to increase their chances of reproduction. In a fish species, the threespine stickleback, Gasterosteus aculeatus, small males arrived before larger males at the breeding grounds. Early arrival was costly because predation risk was at its highest at the start of the season and early territory establishment was selected against, as demonstrated by selection coefficients for territory maintenance and hatching success. Large males probably postponed arrival until females were available to decrease predation risk costs and increase offspring production. An experimental study showed that a delay in arrival of large males does not decrease their probability of reproduction, because large males are able to take over nest sites from small males. Small males, on the other hand, are less likely to establish territories in competition with large males but can pay the costs of early arrival in exchange for the benefit of access to territories. Thus, whereas natural selection favors later arrival, sexual selection through competition for breeding territories favors early arrival in small, competitively inferior males. This results in the benefits of early arrival depending on the competitive ability of the male, which favors size‐dependent optimal arrival times.

show abstract

The Relationship Between Sexual Size Dimorphism and Habitat Use in Greater Antillean Anolis Lizards

Cited by 144 publications

References 85 publications

Morphometric and genetic divergence in island and mainland populations ofAnolis nebulosus(Squamata: Polychrotidae) from Jalisco (Mexico): an instance of insular gigantism

Morphometric and genetic divergence in island and mainland populations ofAnolis nebulosus(Squamata: Polychrotidae) from Jalisco (Mexico): an instance of insular gigantism

Evolution of sexual dimorphism in bill size and shape of hermit hummingbirds (Phaethornithinae): a role for ecological causation

Size-Dependent Selection on Arrival Times in Sticklebacks: Why Small Males Arrive First

Contact Info

Product

Resources

About