Morphological and molecular identification of helminths of the greater bulldog bat Noctilio leporinus (Quiroptera: Noctilionidae) from Campeche, Mexico.

Surveys on parasites of bats from the Americas have been conducted, but information on helminths is still scarce, especially in the Neotropical region. In Mexico, there are species of bats that lack of a record for helminth species, such as members of the family Noctilionidae. The present study describes for the first time the helminths of Noctilio leporinus in Campeche, Mexico. In 2017, six specimens of N. leporinus were studied for helminths. The species identification of helminths was based on morphological studies and molecular analysis of fragments of the 28S rDNA. All bat specimens were infected for at least one helminth species. Three helminth taxa were identified: the trematode Pygidiopsis macrostomum, and the nematodes Tricholeiperia cf. proencai, and Heligmonellidae gen. sp. The morphological identification of P. macrostomum was confirmed by sequence analysis of 28S rDNA gene. The phylogeny of P. macrostomum grouped our sequence with other sequences of the same species collected in Brazil. The phylogenetic tree of Heligmonellidae gen. sp. indicated that the helminth belongs to clade formed by the species Odilia bainae, Nippostrongylus magnus and Nippostrongylus brasiliensis of the family Heligmonellidae. The phylogenetic analysis of the 28S sequences of T. cf. proencai did not show any similarity or close affinity with nematodes from which that gene has been sequenced to date. The findings of the present study increase the number of helminth species parasitizing bats in Mexico.

TTV, what is it and what do we know in Mexico? / TTV, ¿qué es y qué sabemos en México?

The aim of this editorial is to present a brief description of the Torque teno virus' epidemiology and establish the actuality of their study in México. Also, we mentioned the studies made in México and Yucatán, specifically in the Center of Regional Research "Dr. Hideyo Noguchi" of the Autonomous University of Yucatán.

El objetivo de esta editorial es presentar una breve descripción de la epidemiología del Torque teno virus, así como establecer la actualidad del escenario de su estudio en México. Además, hacemos mención de los estudios hechos en México y en Yucatán, específicamente en el Centro de Investigaciones Regionales "Dr. Hideyo Noguchi", de la Universidad Autónoma de Yucatán.

Estudio sobre roedores sinántropicos como reservorios de patógenos zoonóticos en Yucatán / Synanthropic rodents, threat to health?

Resumen Los roedores sinantrópicos participan en el ciclo infeccioso de numerosas enfermedades zoonóticas de importancia a nivel mundial y nacional, ya sea como reservorios, hospederos intermediarios u hospederos de los ectoparásitos vectores que transmiten a los agentes etiológicos. En Yucatán, México, las especies más frecuentes son Rattus rattus y Mus musculus, los cuales han sido identificados en medios rurales, sub-urbanos y urbanos. En los últimos años en Yucatán, se han realizado distintos estudios epidemiológicos en los que se han descrito a estos roedores como positivos a diversos agentes zoonóticos de relevancia en salud pública y animal. El objetivo de la presente revisión es mencionar los agentes infecciosos reportados en estas investigaciones, para manifestar la importancia de los roedores sinantrópicos en la diseminación y/o control de algunas enfermedades endémicas en la región.

Abstract Synanthropic rodents are involved in the infectious cycle of numerous zoonotic diseases of global and national importance, as reservoirs, intermediate hosts, or hosts of the ectoparasites vectors that transmit the etiological agents. In Yucatan, Mexico, the most frequent species are Rattus rattus and Mus musculus, which have been identified in rural, suburban and urban environments. In recent years in Yucatan, several epidemiological studies have been carried out in which these rodents have been described as positive to various zoonotic agents of relevance in public and animal health. The aim of this review is to mention the infectious agents reported in these investigations, to demonstrate the importance of the synanthropic rodents in the dissemination and/or control of some endemic diseases in the region.