Abstract

GASTON FIAD, Federico; CAREZZANO, Fernando José; CARDOZO, Miriam  and  RODRIGUEZ, Claudia Susana. Histology of folicular development of hybrids between Triatoma infestans Klug, 1864 and Triatoma platensis Neiva, 1913 (Hemiptera: Heteroptera). Acta biol.Colomb. [online]. 2021, vol.26, n.3, pp.462-465.  Epub Jan 28, 2022. ISSN 0120-548X.  https://doi.org/10.15446/abc.v26n3.87029.

Triatoma infestans and Triatoma platensis are interfertile species that frequently share ecotopes and produce natural fertile hybrids. Interspecific crossing allows the production of more suitable hybrid genotypes capable of colonizing new habitats. Therefore, studies of reproductive aspects in hybrids are of great importance. In this sense, oogenesis, a process that involves the development of the oocyte and allows the formation of viable eggs, is a relevant aspect. In this study, histological aspects focused on the follicular development of experimental hybrids were characterized. To do this, the ovaries of35 hybrid females were removed, paraffin-embedded and stained with hematoxylin-eosin. The development of the follicular epithelium and the oocyte in the stages of previtellogenesis and vitellogenesis were characterized, finding that the oogenesis of the hybrid females is well defined producing viable eggs and that the changes occurred at the histological level resemble those registered in T. infestans.

Keywords : oogenesis; ovarian cycle; reproductive biology; Triatominae.

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