Consistent Differences in Sperm Morphology and Testis Size between Native and Introduced Populations of Three Anolis Lizard Species

2017 ◽  
Vol 51 (4) ◽  
pp. 532-537 ◽  
Author(s):  
Ariel F. Kahrl ◽  
Robert M. Cox
Keyword(s):  
Sperm Morphology ◽  
Testis Size ◽  
Lizard Species ◽  
Anolis Lizard ◽  
Introduced Populations

Genetic reconstruction of the invasion history of Anolis wattsi in Trinidad with a comment on the importance of ecological similarity to invasion success

2019 ◽  
pp. 131-137
Author(s):  
Keyword(s):  
Native Species ◽  
Geographic Origin ◽  
Invasion Success ◽  
Published Data ◽  
Invasion History ◽  
Lizard Species ◽  
Anolis Lizard ◽  
Scale Population ◽  
History Of ◽  
Multiple Species

Human activities have reshaped patterns of island biogeography for many groups of amphibians and reptiles. In Trinidad, an island in the West Indies with only one native Anolis lizard species, four additional anole species have been introduced since the 1800s. The most recent introduction, Anolis wattsi, native to Antigua, has become established despite the presence of multiple species of resident anoles. We used genetic data (mitochondrial DNA) to infer the geographic origin and genetic structure of introduced A. wattsi on Trinidad. We then gathered published data to compare eco-morphological traits of all anole species currently established on the island. We found three mtDNA haplotypes in Trinidad that clustered with two different clades from the northern part of the native range in Antigua, rejecting the hypothesis that the lizards originated in the pineapple-growing region of the south. However, a lack of fine-scale population structure precluded precise identification of the origin in Antigua of haplotypes introduced to Trinidad. Compared to the other anole species on Trinidad, A. wattsi is smaller, perches lower, and has a higher field body temperature. Thus, the successful establishment and spread of A. wattsi should not be surprising given the success of two previous introductions of anole species that were more similar ecomorphologically to the native species and each other, and the fact that Trinidad has relatively few anole species for its size.

Enzyme function and polymorphism: A test in two Anolis lizard species

1984 ◽  
Vol 22 (1-2) ◽  
pp. 89-97 ◽  
Author(s):  
E. Zouros ◽  
Paul E. Hertz
Keyword(s):  
Enzyme Function ◽  
Lizard Species ◽  
Anolis Lizard

scholarly journals Admixture determines genetic diversity and population differentiation in the biological invasion of a lizard species

2008 ◽  
Vol 4 (4) ◽  
pp. 434-437 ◽  
Author(s):  
Jason J Kolbe ◽  
Allan Larson ◽  
Jonathan B Losos ◽  
Kevin de Queiroz
Keyword(s):  
Molecular Genetic ◽  
Genotypic Variation ◽  
Genotypic Diversity ◽  
Native Range ◽  
Adaptive Genetic Variation ◽  
Lizard Species ◽  
Microsatellite Variation ◽  
Introduced Populations ◽  
Haplotypic Diversity ◽  
Source Populations

Molecular genetic analyses show that introduced populations undergoing biological invasions often bring together individuals from genetically disparate native-range source populations, which can elevate genotypic variation if these individuals interbreed. Differential admixture among multiple native-range sources explains mitochondrial haplotypic diversity within and differentiation among invasive populations of the lizard Anolis sagrei . Our examination of microsatellite variation supports the hypothesis that lizards from disparate native-range sources, identified using mtDNA haplotypes, form genetically admixed introduced populations. Furthermore, within-population genotypic diversity increases with the number of sources and among-population genotypic differentiation reflects disparity in their native-range sources. If adaptive genetic variation is similarly restructured, then the ability of invasive species to adapt to new conditions may be enhanced.

119: Effect of Epididymitis on Semen Biochemical and Sperm Morphology Parameters

2005 ◽  
Vol 173 (4S) ◽  
pp. 32-32
Author(s):  
Petra Huwe ◽  
Roelof Menkveld ◽  
Martin Ludwig ◽  
Wolfgang Weidner
Keyword(s):  
Sperm Morphology ◽  
Morphology Parameters
Sign in / Sign up

Export Citation Format

Share Document