Morphometric Analysis of the Host Effect on Phenotypical Variation of Belminus ferroae (Hemiptera: Triatominae). (24th November 2015)

• Record Type: Journal Article
• Authors: Sandoval Ramirez, Claudia Magaly; Nieves Blanco, Elsa Evelia; Gutiérrez Marin, Reinaldo; Jaimes Mendez, Diego Alexander; Rodríguez, Nelcy Ortiz; Otálora-Luna, Fernando; José Aldana, Elis
• Other Names: Galvão Cleber Academic Editor.
• Is Part Of: Psyche. Volume 2015(2015)
• Publication Date: 2015-11-24
• Subjects: Entomology -- Periodicals; Insects -- Periodicals; 595.705
• DOI: 10.1155/2015/613614
• Languages: English
• ISSNs: 0033-2615

Abstract

Abstract : The Triatominae subfamily includes hematophagous insects, well known for their role as vectors for the Trypanosoma cruzi parasite, etiologic agent of Chagas' disease. Belminus ferroae is a triatomine that showed an increased demographic fitness when cockroaches were used as hosts. Here we compare the centroid size (CS) and wing shape between B. ferroae parents and three successive generations (O1, O2, and O3) of their offspring fed on cockroaches or mice under laboratory conditions. Morphometric analysis of the wings bugs fed on cockroaches showed a significant reduction in CS in both sexes among all generations. Sexual size dimorphism (SSD) was observed in the insects fed on cockroaches (O2 and O3), as well as those bugs fed on mice (O2). Differences in the shape of wings were observed between parental and offspring wings when fed on mice, but not in males (O1, O2, and O3) or females (O1 and O2) fed on cockroaches. There was a greater wing shape similarity between the cockroach-fed offspring and their parents according to the Mahalanobis distances. Our results support the idea of higher adaptation of this Triatominae with arthropod hosts.