The literature cites 4 species of bat-parasiting Cimicidae in Argentina: Cimex lectularius Linnaeus, 1758, Propicimex tucmatiani (Wygodzinsky 1951) (both Cimicinae), Latrocimex spectans (Lent 1941) (Latrocimicinae), and Bucimex chilensis Usinger 1963 (Primicimicinae), all with few known records. Propicimex tucmatiani has formerly been cited in the provinces of Buenos Aires, Salta, Santiago del Estero, and Tucuman. Data presented in this work extends its distribution into the province of Corrientes, approximately 850 km north of the last recorded finding in Buenos Aires.
trabajo se reportan ocho nuevas localidades de distribución para ocho especies de murciélagos, pertenecientes a las familias Phyllostomidae, Vespertilionidae y Molossidae. Además, se agregan reportes adicionales de especies nuevas para localidades de registro ya conocidas. Estos registros corresponden a 31 ejemplares procedentes de distintas ecorregiones (Chaco Húmedo, Campos y Malezales y Esteros del Iberá). Finalmente, se incluyen algunos comentarios sobre la historia natural de las especies citadas, ampliando el conocimiento para este grupo de mamíferos en la provincia.
The gular gland is a skin gland located in the suprasternal region of adult males of some bat families. Knowledge of the morphology and functional aspects of these gland types is often limited. This study aimed to describe the structure and composition of the gular glands of three molossid species (Eumops patagonicus, Molossus fluminensis and Molossus molossus) with respect to their reproductive activity and to define the mechanism involved in secretion release. Different histological, histochemical and immunohistochemical techniques were used to achieve these goals. The results revealed that the size and composition of this gland are variable and are mostly related to the lipid content during the reproductive season. The results also documented, for the first time, the occurrence of mechanoreceptors associated with the surface of the glandular duct by detecting an S100 protein, indicating that an external stimulus activates secretion. Previous studies on other species have classified the gland using obsolete criteria; hence, we adopted a new classification of adenomeres in this study. Moreover, we investigated the gland secretion mechanism previously proposed. This study defines the implications of this gland in the reproduction of this species. Our preliminary interpretation of the function of the gular gland is that it is a cutaneous exocrine gland activated by mechanoreceptors involved in the reproductive behaviour of the Molossidae family.
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