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Phylogeny and niche conservatism in North and Central American triatomine bugs (Hemiptera: Reduviidae: Triatominae), vectors of Chagas' disease.

Ibarra-Cerdeña CN, Zaldívar-Riverón A, Peterson AT, Sánchez-Cordero V, Ramsey JM - PLoS Negl Trop Dis (2014)

Bottom Line: A primary clade with all North and Central American (NCA) triatomine species from the genera Triatoma, Dipetalogaster, and Panstrongylus, was consistently recovered.Nearctic species within the NCA clade (T. p. protracta, T. r. rubida) diverged during the Pliocene, whereas the Neotropical species (T. phyllosoma, T. longipennis, T. dimidiata complex) are estimated to have diverged more recently, during the Pleistocene.While this framework is used here to infer niche evolution, it has a direct impact on spatial vector dynamics driven by human population movements, expansion of transportation networks and climate change scenarios.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Ecología Humana, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Unidad Mérida, Mérida, Yucatán, México.

ABSTRACT
The niche conservatism hypothesis states that related species diverge in niche characteristics at lower rates than expected, given their lineage divergence. Here we analyze whether niche conservatism is a common pattern among vector species (Hemiptera: Reduviidae: Triatominae) of Trypanosoma cruzi that inhabit North and Central America, a highly heterogeneous landmass in terms of environmental gradients. Mitochondrial and nuclear loci were used in a multi-locus phylogenetic framework to reconstruct phylogenetic relationships among species and estimate time of divergence of selected clades to draw biogeographic inferences. Then, we estimated similarity between the ecological niche of sister species and tested the niche conservatism hypothesis using our best estimate of phylogeny. Triatoma is not monophyletic. A primary clade with all North and Central American (NCA) triatomine species from the genera Triatoma, Dipetalogaster, and Panstrongylus, was consistently recovered. Nearctic species within the NCA clade (T. p. protracta, T. r. rubida) diverged during the Pliocene, whereas the Neotropical species (T. phyllosoma, T. longipennis, T. dimidiata complex) are estimated to have diverged more recently, during the Pleistocene. The hypothesis of niche conservatism could not be rejected for any of six sister species pairs. Niche similarity between sister species best fits a retention model. While this framework is used here to infer niche evolution, it has a direct impact on spatial vector dynamics driven by human population movements, expansion of transportation networks and climate change scenarios.

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Related in: MedlinePlus

Bayesian phylogram derived from a multilocus analysis of the Triatominae subfamily, includes Zelurus petax and Reduvius personatus from the Reduviinae as outgroup (in blue).The geographic range for all species modeled in the genus Triatoma is also shown (NCA species are shown in red, South American species in green and from the Antilles in brown). Panstrongylus species are shown in yellow, Mepraia in pink and Rhodnius species are in purple. Branch color indicates PP<0.8 in gray and ≥0.8 in black. Black circles indicate PP≥0.95<; black stars PP≥0.9<0.95.
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pntd-0003266-g001: Bayesian phylogram derived from a multilocus analysis of the Triatominae subfamily, includes Zelurus petax and Reduvius personatus from the Reduviinae as outgroup (in blue).The geographic range for all species modeled in the genus Triatoma is also shown (NCA species are shown in red, South American species in green and from the Antilles in brown). Panstrongylus species are shown in yellow, Mepraia in pink and Rhodnius species are in purple. Branch color indicates PP<0.8 in gray and ≥0.8 in black. Black circles indicate PP≥0.95<; black stars PP≥0.9<0.95.

Mentions: The Bayesian phylogram derived from the concatenated analysis of the cyt b, COI, 12S, 16S, 18S and 28S gene markers is shown in Figure 1. The phylogram contains a considerable number of significantly supported clades (23 out of 49 clades), with three additional clades also having significant PP values (0.9≤PP≤0.94).


Phylogeny and niche conservatism in North and Central American triatomine bugs (Hemiptera: Reduviidae: Triatominae), vectors of Chagas' disease.

Ibarra-Cerdeña CN, Zaldívar-Riverón A, Peterson AT, Sánchez-Cordero V, Ramsey JM - PLoS Negl Trop Dis (2014)

Bayesian phylogram derived from a multilocus analysis of the Triatominae subfamily, includes Zelurus petax and Reduvius personatus from the Reduviinae as outgroup (in blue).The geographic range for all species modeled in the genus Triatoma is also shown (NCA species are shown in red, South American species in green and from the Antilles in brown). Panstrongylus species are shown in yellow, Mepraia in pink and Rhodnius species are in purple. Branch color indicates PP<0.8 in gray and ≥0.8 in black. Black circles indicate PP≥0.95<; black stars PP≥0.9<0.95.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4214621&req=5

pntd-0003266-g001: Bayesian phylogram derived from a multilocus analysis of the Triatominae subfamily, includes Zelurus petax and Reduvius personatus from the Reduviinae as outgroup (in blue).The geographic range for all species modeled in the genus Triatoma is also shown (NCA species are shown in red, South American species in green and from the Antilles in brown). Panstrongylus species are shown in yellow, Mepraia in pink and Rhodnius species are in purple. Branch color indicates PP<0.8 in gray and ≥0.8 in black. Black circles indicate PP≥0.95<; black stars PP≥0.9<0.95.
Mentions: The Bayesian phylogram derived from the concatenated analysis of the cyt b, COI, 12S, 16S, 18S and 28S gene markers is shown in Figure 1. The phylogram contains a considerable number of significantly supported clades (23 out of 49 clades), with three additional clades also having significant PP values (0.9≤PP≤0.94).

Bottom Line: A primary clade with all North and Central American (NCA) triatomine species from the genera Triatoma, Dipetalogaster, and Panstrongylus, was consistently recovered.Nearctic species within the NCA clade (T. p. protracta, T. r. rubida) diverged during the Pliocene, whereas the Neotropical species (T. phyllosoma, T. longipennis, T. dimidiata complex) are estimated to have diverged more recently, during the Pleistocene.While this framework is used here to infer niche evolution, it has a direct impact on spatial vector dynamics driven by human population movements, expansion of transportation networks and climate change scenarios.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Ecología Humana, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Unidad Mérida, Mérida, Yucatán, México.

ABSTRACT
The niche conservatism hypothesis states that related species diverge in niche characteristics at lower rates than expected, given their lineage divergence. Here we analyze whether niche conservatism is a common pattern among vector species (Hemiptera: Reduviidae: Triatominae) of Trypanosoma cruzi that inhabit North and Central America, a highly heterogeneous landmass in terms of environmental gradients. Mitochondrial and nuclear loci were used in a multi-locus phylogenetic framework to reconstruct phylogenetic relationships among species and estimate time of divergence of selected clades to draw biogeographic inferences. Then, we estimated similarity between the ecological niche of sister species and tested the niche conservatism hypothesis using our best estimate of phylogeny. Triatoma is not monophyletic. A primary clade with all North and Central American (NCA) triatomine species from the genera Triatoma, Dipetalogaster, and Panstrongylus, was consistently recovered. Nearctic species within the NCA clade (T. p. protracta, T. r. rubida) diverged during the Pliocene, whereas the Neotropical species (T. phyllosoma, T. longipennis, T. dimidiata complex) are estimated to have diverged more recently, during the Pleistocene. The hypothesis of niche conservatism could not be rejected for any of six sister species pairs. Niche similarity between sister species best fits a retention model. While this framework is used here to infer niche evolution, it has a direct impact on spatial vector dynamics driven by human population movements, expansion of transportation networks and climate change scenarios.

Show MeSH
Related in: MedlinePlus