Genetic Divergence between Anolis carolinensis and Its Cuban Progenitor, Anolis porcatus

Buth, Donald G.; Gorman, George C.; Lieb, Carl S.

doi:10.2307/1563550

Cited by 21 publications

(23 citation statements)

References 13 publications

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“…Selection for a species discrimination function for the display signals of A. carolinensis would be expected to be relaxed, however, because the species has been the only anole (disregarding recent exotic introductions in Florida) endemic to the continental United States for millions of years (Buth et al, 1980). Nonetheless, strong stabilizing selection on signal behaviour must occur because geographically disjunct populations of A. carolinensis (e.g.…”

Section: Species Discriminationmentioning

confidence: 99%

Heterosexual Signalling By the Lizard Anolis Carolinensis, with Intersexual Comparisons Across Contexts

Orrell¹,

Jenssen

2003

Behav

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SummaryWe quanti ed the structure and use of signals exchanged by males and females within the female-defence polygyny of the lizard, Anolis carolinensis. During heterosexual interactions, both sexes performed three kinds of stereotypic headbob displays (A, B, and C) with equal precision. These three display types were essentially identical to A, B, and C display types previously documented for both sexes during consexual contests, and for males when displaying alone (non-directed context). Therefore, there is no courtship-speci c headbob display in A. carolinensis. Although interacting males and females displayed at a similar mean frequency (»20 displays/h), signalling was sexually dimorphic in that: (1) males used predominately C displays (89%), whereas females used predominantly A and B displays (48% and 50%, respectively); (2) males extended their dewlaps with almost every display (98%), whereas females extended their dewlaps with few displays (<2%); (3) males sequenced 80% of displays in volleys of two or more displays, whereas females performed only 12% of displays in volleys; and (4) males concluded 22% of displays with shudderbobs (i.e. display modi er composed of shallow, quick, double bobs), whereas females never appended displays with shudderbobs. From eld and laboratory data on A. carolinensis signal behaviour during other social contexts and the species' female-defence mating system, we interpret heterosexual signalling from a perspective of intrasexual selection to discuss the: (1) absence

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Section: Species Discriminationmentioning

confidence: 99%

Heterosexual Signalling By the Lizard Anolis Carolinensis, with Intersexual Comparisons Across Contexts

Orrell¹,

Jenssen

2003

Behav

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“…Anolis sagrei only recently colonized Florida and Grand Cayman from its native Cuba (Lieb et al 1983;Lee 1992), where it occurs in sympatry with several other native anoles, whereas, until the arrival of A. sagrei, A. carolinensis and A. conspersus were the only anole species in Florida and Grand Cayman, respectively (Williams 1969). Further, both A. carolinensis (Williams 1969;Buth et al 1980) and A. conspersus (Underwood and Williams 1959;Hedges and Burnell 1990) have been isolated long enough from their ancestral island populations in Cuba and Jamaica, respectively, for speciation to occur. Thus, isolation from other Anolis species may have led to a relaxation of selective pressures for conspecific recognition of juveniles in A. carolinensis and A. conspersus.…”

Section: Possible Causes Of Asymmetry In Intraguild Predationmentioning

confidence: 99%

Evidence for asymmetrical intraguild predation between native and introduced Anolis lizards

Gerber

Echternacht

2000

Oecologia

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Since its introduction, Anolis sagrei (Sauria: Polychrotidae) has been replacing native A. carolinensis in Florida and native A. conspersus in Grand Cayman Island as the common anole of urban environments and other open habitats. To assess the likelihood that predation of juvenile native anoles by A. sagrei adults is an important interaction in this process, the propensities for intraguild predation and cannibalism were assessed for A. sagrei and A. carolinensis in Florida and for A. sagrei and A. conspersus in Grand Cayman. Predation experiments were conducted in cages, using freshly captured lizards, in which adult males of each species were presented with conspecific and heterospecific juveniles. Adult A. sagrei were (1) significantly more likely to eat juveniles than were adult A. carolinensis or A. conspersus, and (2) significantly more likely to eat heterospecific than conspecific juveniles, whereas adult A. carolinensis and A. conspersus were not. Thus, the propensity for intraguild predation is asymmetrical in favor of introduced A. sagrei in Florida and Grand Cayman. Further study is needed, however, to determine the importance of intraguild predation under field conditions.

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“…Two members of the carolinensis group, A. allisoni and A. porcatus, were close to A. carolinensis and equidistant immunologically. The close relationship between A. carolinensis and A. porcatus also is supported by electrophoretic data (Buth et al, 1980). - • - • …”

Section: Anolismentioning

confidence: 59%

Molecular insights into the relationships and biogeography of West Indian anoline lizards

Hass

Maxson

1993

Biochemical Systematics and Ecology

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Abstract-The realization that the present day positions of continents and island arcs are a result of continental drift led to the proposal that the extant West Indian fauna reflect an ancient (Cretaceous) land connection between the proto-Antilles and North and South America. Movements of the Antillean islands throughout the Cenozoic are hypothesized to have further fragmented the fauna present on the protoAntilles when it separated from the mainland 70-80 million years ago. This proposed vicariant origin of the West Indian fauna challenged the previous theory that some or most of the fauna arrived in the Antilles by overwater dispersal from mainland sources. The virtual absence of appropriate fossils in the West Indies has hampered testing these alternative hypotheses for the origin of the present day West Indian fauna.We present evidence from two types of molecular data, one providing indirect estimates of amino acid sequence divergence for the protein serum albumin, and the other direct DNA sequence information from a mitochondrial ribosomal RNA gene. Our new data provide insights into the origin and relationships of two enigmatic lizard genera, Chamae/eo/is and Chamae/inorops, and suggest they are recent derivatives within' the genus Ana/is. These data, along with molecular data presented elsewhere, strongly implicate an origin by overwater dispersal for most of the Antillean vertebrate fauna.

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Genetic Divergence between Anolis carolinensis and Its Cuban Progenitor, Anolis porcatus

Cited by 21 publications

References 13 publications

Heterosexual Signalling By the Lizard Anolis Carolinensis, with Intersexual Comparisons Across Contexts

Heterosexual Signalling By the Lizard Anolis Carolinensis, with Intersexual Comparisons Across Contexts

Evidence for asymmetrical intraguild predation between native and introduced Anolis lizards

Molecular insights into the relationships and biogeography of West Indian anoline lizards

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