2020
Vega-Sánchez, Yesenia Margarita; Mendoza-Cuenca, Luis Felipe; Gonzálezrodríguez, Antonio
Hetaerina calverti (Odonata: Zygoptera: Calopterygidae) sp. nov., a new cryptic species of the American Rubyspot complex Artículo de revista
En: Zootaxa, vol. 4766, iss. 3, pp. 485-497, 2020, ISSN: 11755334.
Resumen | Enlaces | Etiquetas: Damselfly, Genetic divergence, Hetaerina americana, Morphological differentiation
@article{nokey,
title = {Hetaerina calverti (Odonata: Zygoptera: Calopterygidae) sp. nov., a new cryptic species of the American Rubyspot complex},
author = {Yesenia Margarita Vega-Sánchez and Luis Felipe Mendoza-Cuenca and Antonio Gonzálezrodríguez},
doi = {10.11646/zootaxa.4766.3.7},
issn = {11755334},
year = {2020},
date = {2020-01-01},
journal = {Zootaxa},
volume = {4766},
issue = {3},
pages = {485-497},
publisher = {Magnolia Press},
abstract = {Hetaerina americana Fabricius, 1798 has a long and irresolute taxonomic history. Several synonyms have been suggested (H. californica Hagen in Selys-Longchamps, 1859, H. basalis Hagen in Selys-Longchamps, 1859, H. texana Walsh, 1863, H. scelerata Walsh, 1863, etc.), related to the variation in the size of the wing spots as well as to the morphology of the male cerci. However, Calvert (1901) suggested that H. americana represents one variable species. Nevertheless, Vega-Sánchez et al. (2019) through a genetic and morphological analysis presented evidence to propose that H. americana represents a species complex. In the present work, we describe a new species that belongs to this complex: H. calverti sp. nov. The morphological characteristics by which males and females of H. calverti differ from H. americana are highlighted. The most important character for the differentiation of males is the shape of the cerci and the size of the individuals (when the two species are in sympatry). In females, the main differences are in the shape of the intersternites and the medio-dorsal carina of the last segment of the abdomen. Some generalities about the biology of the species are presented, including geographical distribution patterns and genetic divergence data.},
keywords = {Damselfly, Genetic divergence, Hetaerina americana, Morphological differentiation},
pubstate = {published},
tppubtype = {article}
}
Hetaerina americana Fabricius, 1798 has a long and irresolute taxonomic history. Several synonyms have been suggested (H. californica Hagen in Selys-Longchamps, 1859, H. basalis Hagen in Selys-Longchamps, 1859, H. texana Walsh, 1863, H. scelerata Walsh, 1863, etc.), related to the variation in the size of the wing spots as well as to the morphology of the male cerci. However, Calvert (1901) suggested that H. americana represents one variable species. Nevertheless, Vega-Sánchez et al. (2019) through a genetic and morphological analysis presented evidence to propose that H. americana represents a species complex. In the present work, we describe a new species that belongs to this complex: H. calverti sp. nov. The morphological characteristics by which males and females of H. calverti differ from H. americana are highlighted. The most important character for the differentiation of males is the shape of the cerci and the size of the individuals (when the two species are in sympatry). In females, the main differences are in the shape of the intersternites and the medio-dorsal carina of the last segment of the abdomen. Some generalities about the biology of the species are presented, including geographical distribution patterns and genetic divergence data.
2019
Vega-Sánchez, Yesenia Margarita; Mendoza-Cuenca, Luis Felipe; González-Rodríguez, Antonio
Complex evolutionary history of the American Rubyspot damselfly, Hetaerina americana (Odonata): Evidence of cryptic speciation Artículo de revista
En: Molecular Phylogenetics and Evolution, vol. 139, iss. March, pp. 106536, 2019, ISSN: 10959513.
Resumen | Enlaces | Etiquetas: Calopterygidae, Caudal appendages, Genetic divergence, Mitonuclear discordance, nonecological speciation, Reproductive isolation
@article{Vega-Sanchez2019,
title = {Complex evolutionary history of the American Rubyspot damselfly, Hetaerina americana (Odonata): Evidence of cryptic speciation},
author = {Yesenia Margarita Vega-Sánchez and Luis Felipe Mendoza-Cuenca and Antonio González-Rodríguez},
url = {https://doi.org/10.1016/j.ympev.2019.106536},
doi = {10.1016/j.ympev.2019.106536},
issn = {10959513},
year = {2019},
date = {2019-01-01},
journal = {Molecular Phylogenetics and Evolution},
volume = {139},
issue = {March},
pages = {106536},
publisher = {Elsevier},
abstract = {Analyzing the magnitude and distribution of genetic variation within and among populations allows for hypothesis testing about historical demographic size changes, secondary contacts, refugia, and speciation patterns. Species distribution and genetic structure are greatly influenced by the complex life cycle and behavior of odonates. Hetaerina americana has been widely used as a model system in behavioral studies, but its population genetic structure has not been analyzed, except for a single study that included only three populations but identified the presence of markedly differentiated genetic groups, suggesting the existence of cryptic species. Here, we tested this hypothesis by assessing throughout the distribution range of H. americana the patterns of genetic and morphological variation in the male caudal appendages, due to the great importance of these structures in mate recognition. As molecular markers we used sequences of the mitochondrial cytochrome oxidase I (COI) gene and the nuclear internal transcribed spacer (ITS) region, as well as six nuclear microsatellites. We found very high population genetic differentiation (ΦST > 0.51) in the three sets of markers but with strong mitonuclear discordance. A neutrality test suggested that the mitochondrial genome might be under purifying selection in association to climatic variables (temperature seasonality). The assignment of individuals to nuclear genetic groups showed little admixture and complete congruence with morphological differentiation in the male caudal appendages. Hence, the results suggest that H. americana represents at least two different cryptic species which are isolated reproductively.},
keywords = {Calopterygidae, Caudal appendages, Genetic divergence, Mitonuclear discordance, nonecological speciation, Reproductive isolation},
pubstate = {published},
tppubtype = {article}
}
Analyzing the magnitude and distribution of genetic variation within and among populations allows for hypothesis testing about historical demographic size changes, secondary contacts, refugia, and speciation patterns. Species distribution and genetic structure are greatly influenced by the complex life cycle and behavior of odonates. Hetaerina americana has been widely used as a model system in behavioral studies, but its population genetic structure has not been analyzed, except for a single study that included only three populations but identified the presence of markedly differentiated genetic groups, suggesting the existence of cryptic species. Here, we tested this hypothesis by assessing throughout the distribution range of H. americana the patterns of genetic and morphological variation in the male caudal appendages, due to the great importance of these structures in mate recognition. As molecular markers we used sequences of the mitochondrial cytochrome oxidase I (COI) gene and the nuclear internal transcribed spacer (ITS) region, as well as six nuclear microsatellites. We found very high population genetic differentiation (ΦST > 0.51) in the three sets of markers but with strong mitonuclear discordance. A neutrality test suggested that the mitochondrial genome might be under purifying selection in association to climatic variables (temperature seasonality). The assignment of individuals to nuclear genetic groups showed little admixture and complete congruence with morphological differentiation in the male caudal appendages. Hence, the results suggest that H. americana represents at least two different cryptic species which are isolated reproductively.