Cross-mating experiments detect reproductive compatibility between Triatoma sherlocki and other members of the Triatorna brasiliensis species complex

Autor(es)

Correia, Nathalia ^[1] ; Almeida, Carlos E. ^[2] ; Lima-Neiva, Vanessa ^[1] ; Gumiel, Marcia ^[1] ; Dornak, L. Lynnette ^{[3, 4]} ; Lima, Marli M. ^[3] ; Medeiros, Livia M. O. ^[2] ; Mendonca, Vagner J. ^[2] ; da Rosa, Joao A. ^[2] ; Costa, Jane ^[1]

Afiliação do(s) autor(es)

^[1] Inst Oswaldo Cruz Fiocruz, Lab Biodiversidade Entomol, Rio De Janeiro - Brazil

^[2] UNESP, Fac Ciencias Farmaceut, Dept Ciencias Biol, Araraquara - Brazil

^[3] Inst Oswaldo Cruz Fiocruz, Lab Ecoepidemiol Doenca Chagas, Rio De Janeiro - Brazil

^[4] Univ Idaho, Dept Fisheries & Wildlife Sci, Moscow, ID 83843 - USA

• Tipo de documento: Artigo Científico
• Fonte: Acta Tropica; v. 128, n. 1, p. 162-167, OCT 2013.
• Citações Web of Science: 19

Resumo

Phylogenetic approaches based on mitochondrial DNA variation (fragments of Cyt B and 16S ribosomal RNA) have revealed Triatoma sherlocki as the most recent species addition to the Triatoma brasiliensis species complex; a monophyletic group which includes T. brasiliensis, Triatoma melanica, and Triatoma juazeirensis. T. sherlocki is the most differentiated among all species of this complex: it is unable to fly, possesses longer legs than the other members, and has reddish tonality in some parts of its exochorion. We question whether these species are reproductively compatible because of this pronounced morphological differentiation, and therefore, we present a series of cross breeding experiments that test compatibility between T. sherlocki and other members of the T. brasiliensis complex. We extended our analyses to include crosses between T. sherlocki and Triatoma lend, because the latter has been suggested as a possible member of this complex. T. sherlocki male x T. lend female pairs failed to produce hybrids. All other crosses of T. sherlocki and members of T. brasiliensis species complex, as well as backcrosses, produced viable offspring through the third generation. This study stresses the importance of searching for the features that may isolate members of the T. brasiliensis species complex. (C) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/22378-0 - Modelagem de nicho ecológico e estrutura genética de Triatoma sherlocki (Triatominae: Hemiptera) no Estado da Bahia, Brasil: implicações eco-epidemiológicas
• Beneficiário: Carlos Eduardo de Almeida
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 10/17027-0 - Modelagem de nicho ecológico e estrutura genética de Triatoma sherlocki (Triatominae: Hemiptera) no Estado da Bahia, Brasil: implicações eco-epidemiológicas
• Beneficiário: Carlos Eduardo de Almeida
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado