Studying the anthropogenic components of landscapes can provide a solid groundwork to better understand ecological patterns and processes. In this study, we assessed bird species richness and composition in 5 different environmental conditions (well-preserved cloud forest, peri-urban forest, urban greenspace, shade coffee plantation, and cattle ranch) embedded in a landscape whose original vegetation was tropical montane cloud forest. Our results showed that the most similar vegetation structure and physiognomy were peri-urban forest and shade coffee plantation, with urban greenspaces comprising a highly different condition. Regarding species richness, we found no differences for the nonbreeding season (average values 32.9–41.8), but we did find statistical differences for the breeding season (average values 24.5–43.7); highest species richness was recorded for well-preserved cloud forest (43.7 calculated species), which was significantly different from shade coffee plantation (lowest species ric... RESUMEN (Spanish) El estudio de los componentes antrópicos del paisaje puede proveer una base sólida para entender mejor los patrones y procesos ecológicos. En este estudio analizamos la riqueza y composición de especies de aves en cinco diferentes condiciones ambientales (bosque mesófilo de montaña bien conservado, bosque peri-urbano, bosque urbano, cafetal de sombra, potrero), las cuales se encuentran inmersas en un paisaje cuya vegetación original era el bosque mesófilo de montaña. Nuestros resultados muestras que los sitios con mayor similitud en cuanto a estructura y fisionomía vegetal fueron el bosque peri-urbano y el cafetal de sombra, teniendo al bosque urbano como una condición muy diferente. En referencia a la riqueza de especies, no encontramos diferencias entre las condiciones durante la época no reproductiva (valores promedio 32.9–41.8), mientras que se encontraron diferencias significativas durante la época reproductiva (valor promedio 24.5–43.7); la mayor riqueza de especies se registró en ...
Haemoproteus (Parahaemoproteus) parasites are transmitted by Culicoides biting midges. However, the natural vectors of only six of the almost 180 recognized Haemoproteus species have been identified. The aim of this study was to investigate wild biting midges naturally infected with Haemoproteus and to understand the interaction network between Culicoides and Haemoproteus in Europe. Culicoides were collected with UV light traps from different sites in Lithuania. Parous females were morphologically identified based on their wings and heads. PCR-based methods were used to detect the Haemoproteus DNA, and salivary gland preparations were analyzed for the presence of sporozoites. Of the 580 Culicoides analyzed, 5.9% were positive for Haemoproteus DNA, and sporozoites were found in two of 11 sampled biting midge species: Culicoides kibunensis and Culicoides segnis. The interaction network revealed that C. kibunensis and C. segnis are frequently associated with several Haemoproteus lineages. On the other hand, some Haemoproteus lineages were found to interact with only one Culicoides species. This was the first report of C. segnis being a competent vector for H. minutus TURDUS2, H. asymmetricus TUPHI01, H. majoris PHSIB1, and H. fringillae CCF3; and of C. kibunensis being a competent vector for H. belopolskyi HIICT1. Culicoides segnis and C. kibunensis are both important vectors of Haemoproteus parasites.
Wetlands are one of the most productive ecosystems in the world. However, they have received little attention in the tropics. Biodiversity data from the Terminos-Centla wetlands is limited despite the conservation efforts to protect these wetlands. In this study we list the medium-szied and large mammals from 8 sites within the Terminos-Centla wetlands. We recorded 30 native and 1 introduced species, representing 9 orders, 14 families, and 27 genera. Four of the recorded species are Threatened, 9 Endangered, and 1 under special protection under Mexican legislation. Compared with other sites of southeastern Mexico, the area of the Terminos-Centla wetlands has a many more species. Our results highlight the Terminos-Centla wetlands as one of the most important systems of Mesoamerica for the medium-sized and large mammals and and underlines the urgent need to develop conservation strategies for the area.
Haemoproteus parasites are the most diverse among Haemosporida. However, their natural vectors (Culicoides) are still poorly investigated and were identified for only a few parasite species and lineages. The application of an integrative approach (insect dissection, microscopic analysis, and molecular-based methods) is necessary in these studies, which have been carried out by a few research groups, mainly in Europe. The aim of this study was (i) to determine the Culicoides species that are naturally infected by Haemoproteus parasites, and which can support its complete sporogonic development, and (ii) to investigate the prevalence of Culicoides species and Haemoproteus parasite lineages in different study sites. In total, 1953 parous Culicoides females, from 11 species, were collected in four different localities in Lithuania and were dissected and analyzed using an integrative approach. The most abundant was C. pictipennis (30.3%). Parasite DNA was found in 7.9% of all investigated Culicoides, of which ~30% had sporozoites in their salivary glands, confirming their vector competence for these parasites. The Botanical Garden presented the highest number of Culicoides parous females, Culicoides species, and parasite lineages, as well as the highest positivity for sporozoites. Culicoides reconditus was confirmed as a natural vector of Haemoproteus parasites, sporozoites of six Haemoproteus lineages were reported for the first time, and 12 new interactions between Haemoproteus parasite lineages and Culicoides species were identified. Haemoproteus parasites seem to be transmitted by a high number of Culicoides species, with C. kibunensis, C. pictipennis, and C. segnis being the most important vectors.