5 research outputs found
Morphometric analysis of Triatoma dimidiata populations (Reduviidae:Triatominae) from Mexico and Northern Guatemala
Triatoma dimidiata is one of the major vectors of Chagas
disease in Latin America. Its range includes Mexico, all countries of
Central America, Colombia, and Ecuador. In light of recent genetic
analysis suggesting that the possible origin of this species is the
Yucatan peninsula, we have analyzed populations from the state of
Yucatan, San Luis Potosi, and Veracruz in Mexico, and a population from
the southern region of the Yucatan peninsula located in Northern
Guatemala, the region of El Peten. Classical morphometry including
principal component, discriminant, sexual dimorphism, and wing
asymmetry was analyzed. San Luis Potosi and Veracruz populations were
indistinguishable while clearly separate from Yucatan and Peten
populations. Despite important genetic differences, Yucatan and Peten
populations were highly similar. Yucatan specimens were the smallest in
size, while females were larger than males in all populations. Only
head characters were necessary to distinguish population level
differences, although wing fluctuating asymmetry was present in all
populations. These results are discussed in light of recent findings
suggesting genetic polymorphism in most populations of Triatoma
dimidiata south of Chiapas to Ecuador
Morphometric analysis of Triatoma dimidiata populations (Reduviidae:Triatominae) from Mexico and Northern Guatemala
Triatoma dimidiata is one of the major vectors of Chagas
disease in Latin America. Its range includes Mexico, all countries of
Central America, Colombia, and Ecuador. In light of recent genetic
analysis suggesting that the possible origin of this species is the
Yucatan peninsula, we have analyzed populations from the state of
Yucatan, San Luis Potosi, and Veracruz in Mexico, and a population from
the southern region of the Yucatan peninsula located in Northern
Guatemala, the region of El Peten. Classical morphometry including
principal component, discriminant, sexual dimorphism, and wing
asymmetry was analyzed. San Luis Potosi and Veracruz populations were
indistinguishable while clearly separate from Yucatan and Peten
populations. Despite important genetic differences, Yucatan and Peten
populations were highly similar. Yucatan specimens were the smallest in
size, while females were larger than males in all populations. Only
head characters were necessary to distinguish population level
differences, although wing fluctuating asymmetry was present in all
populations. These results are discussed in light of recent findings
suggesting genetic polymorphism in most populations of Triatoma
dimidiata south of Chiapas to Ecuador
Morphometric analysis of Triatoma dimidiata populations (Reduviidae:Triatominae) from Mexico and Northern Guatemala
Triatoma dimidiata is one of the major vectors of Chagas
disease in Latin America. Its range includes Mexico, all countries of
Central America, Colombia, and Ecuador. In light of recent genetic
analysis suggesting that the possible origin of this species is the
Yucatan peninsula, we have analyzed populations from the state of
Yucatan, San Luis Potosi, and Veracruz in Mexico, and a population from
the southern region of the Yucatan peninsula located in Northern
Guatemala, the region of El Peten. Classical morphometry including
principal component, discriminant, sexual dimorphism, and wing
asymmetry was analyzed. San Luis Potosi and Veracruz populations were
indistinguishable while clearly separate from Yucatan and Peten
populations. Despite important genetic differences, Yucatan and Peten
populations were highly similar. Yucatan specimens were the smallest in
size, while females were larger than males in all populations. Only
head characters were necessary to distinguish population level
differences, although wing fluctuating asymmetry was present in all
populations. These results are discussed in light of recent findings
suggesting genetic polymorphism in most populations of Triatoma
dimidiata south of Chiapas to Ecuador
Morphometric analysis of Triatoma dimidiata populations (Reduviidae:Triatominae) from Mexico and Northern Guatemala
Triatoma dimidiata is one of the major vectors of Chagas
disease in Latin America. Its range includes Mexico, all countries of
Central America, Colombia, and Ecuador. In light of recent genetic
analysis suggesting that the possible origin of this species is the
Yucatan peninsula, we have analyzed populations from the state of
Yucatan, San Luis Potosi, and Veracruz in Mexico, and a population from
the southern region of the Yucatan peninsula located in Northern
Guatemala, the region of El Peten. Classical morphometry including
principal component, discriminant, sexual dimorphism, and wing
asymmetry was analyzed. San Luis Potosi and Veracruz populations were
indistinguishable while clearly separate from Yucatan and Peten
populations. Despite important genetic differences, Yucatan and Peten
populations were highly similar. Yucatan specimens were the smallest in
size, while females were larger than males in all populations. Only
head characters were necessary to distinguish population level
differences, although wing fluctuating asymmetry was present in all
populations. These results are discussed in light of recent findings
suggesting genetic polymorphism in most populations of Triatoma
dimidiata south of Chiapas to Ecuador