Relação do coronavírus com os animais ­ revisão de literatura / Coronavirus relationship with animals - literature review / Relación del coronavirus con los animales - revisión de literatura

Os coronavírus são doenças zoonóticas, e, acometem diretamente na saúde e o bem-estar dos animais, bem como dos seres humanos. O surgimento de Síndromes Respiratórias Agudas Graves produzidas por esses vírus é cada vez mais comuns no mundo. Com intuito de compreender e divulgar a ampliação das informações voltadas a esses gêneros de vírus, a presente revisão de literatura realizou avaliação das possíveis causas da internalização de fontes de alimentos não naturais aos animais silvestres, bem como o uso de animais com fonte alimentar aos humanos e as consequências da interrelação frente essas migrações. Nesse sentido é essencial compreender como esses vírus interagem e modificam sua estrutura genética. Entender a forma as quais se relacionam com os animais e como esses são usados na alimentação humana, torna possível o rastreio e estudos sobre a doença. Somente assim, será possível propor medidas atuais, e prevenir futuras doenças e pandemias.(AU)

Coronaviruses are zoonotic diseases which have direct effect on the health and well-being of both animals and human beings. The emergence of Serious Acute Respiratory Syndromes produced by viruses is increasingly common in the world. In order to understand and disseminate the expansion of information related to these genera of viruses, this work carried out an evaluation of the possible causes of the internalization of non-natural food sources to wild animals, as well as the use of animals as food source to humans and the consequences of the interrelation in the face of these migrations. In this sense, it is essential to understand how these viruses work and understand the way they relate to animals. Only after that it will it be possible to propose measures to the current pandemic and also to prevent future diseases and pandemics.(AU)

Los coronavirus son enfermedades zoonóticas, y afectan directamente la salud y el bienestar de los animales, así como de los humanos. La aparición de Síndromes Respiratorios Agudos Graves producidos por esos virus es cada vez más común en el mundo. Con el fin de comprender y difundir la expansión de las informaciones dirigidas a esos géneros de virus, este estudio con revisión de literatura evaluó las posibles causas de la internalización de fuentes alimenticias no naturales a los animales silvestres, así como el uso de animales como fuente alimenticia a los humanos y las consecuencias de la interrelación. frente esas migraciones. En ese sentido, es fundamental comprender cómo esos virus interactúan y modifican su estructura genética. Comprender la forma en que se relacionan con los animales y cómo ésos son usados en la alimentación humana. Solo entonces será posible proponer medidas actuales y prevenir futuras enfermedades y pandemias.(AU)

Assessing Genotoxicity and Mutagenicity of Three Common Amphibian Species Inhabiting Agroecosystem Environment.

Amphibians are constantly exposed to pollutants and the stress of agricultural activities. We selected three anuran amphibian species Dendropsophus minutus, Boana albopunctata, and Physalaemus cuvieri, totaling 309 individuals. We collected tadpoles in 15 permanent ponds: 5 soybean crops, 3 corn crops, and 7 nonagricultural lands. Our study provides the first comparative data on the genotoxicity and mutagenicity of three common amphibian anurans. Dendropsophus minutus was the most vulnerable species compared with B. albopunctata and P. cuvieri for comet assay and micronuclei test. However, the more significant amount of DNA damage seen in D. minutus does not mean that their populations are threatened once such species adapt well to anthropogenic disturbances. Despite, P. cuvieri was less sensitive than the other two species; the DNA damage was significantly higher in soybean crops. Physalaemus cuvieri is a leptodactylidae species that deposit their eggs in foam nests, which are essential to protect eggs from dehydration. Moreover, the foam reduces the contact of eggs with water; thus, P. cuvieri eggs could be less exposed to contaminants present in pounds, compared with D. minutus and B. albopunctata, which deposit their eggs directly in the water. Therefore, this study was sufficiently sensitive to detect genotoxic and mutagenic effects in tadpoles exposed to agroecosystems. We strongly suggest D. minutus in future biomonitoring studies that involve the comparison of anthropized versus not anthropized environments. Overall, we recommend the comet assay and micronucleus test as effective methods for the detection of genotoxic damage in amphibian anurans to the environmental disturbance, especially in agricultural sites.

Cytogenetics of two hylid frogs from Brazilian Cerrado.

Cytogenetic data can be useful for taxonomic and phylogenetic studies, as well as to provide information about chromosome evolution. Therefore, it may help design conservation priorities for some threatened species, such as anurans. Herein, we describe the karyotypes of Scinax constrictus and Ololygon centralis, native endemic species from the Brazilian Cerrado. Chromosome preparations for both species were stained with Giemsa for morphological analyses and then impregnated by the Ag-NOR method for localization of the nucleolar organizer region (NOR). Both species had 24 chromosomes, as confirmed by meiotic analyses, which showed 12 bivalents. Chromosome morphologies presented the same pattern for Scinax and Ololygon compared to species already karyotyped in both genera. The NOR was interstitially located in the long arm of pair 7 in S. constrictus, whereas in O. centralis it was found near the centromere in the long arm of pair 1, thus diverging from what is commonly found for other Ololygon species. Therefore, we provide the first description of the karyotype of O. centralis and the first report of the localization of the NOR for the karyotype of both species. Our study increases the cytogenetic knowledge in species of the genera Scinax and Ololygon, and provide support for further studies on the taxonomy, ecology, and evolution of hylid anurans.

The advertisement calls of Brazilian anurans: Historical review, current knowledge and future directions.

Advertisement calls are often used as essential basic information in studies of animal behaviour, ecology, evolution, conservation, taxonomy or biodiversity inventories. Yet the description of this type of acoustic signals is far to be completed, especially in tropical regions, and is frequently non-standardized or limited in information, restricting the application of bioacoustics in science. Here we conducted a scientometric review of the described adverstisement calls of anuran species of Brazil, the world richest territory in anurans, to evaluate the amount, standard and trends of the knowledge on this key life-history trait and to identify gaps and directions for future research strategies. Based on our review, 607 studies have been published between 1960 to 2016 describing the calls of 719 Brazilian anuran species (68.8% of all species), a publication rate of 10.6 descriptions per year. From each of these studies, thirty-one variables were recorded and examined with descriptive and inferential statistics. In spite of an exponential rise over the last six decades in the number of studies, described calls, and quantity of published metadata, as revealed by regression models, clear shortfalls were identified with regard to anuran families, biomes, and categories of threat. More than 55% of these species belong to the two richest families, Hylidae or Leptodactylidae. The lowest percentage of species with described calls corresponds to the most diverse biomes, namely Atlantic Forest (65.1%) and Amazon (71.5%), and to the IUCN categories of threat (56.8%), relative to the less-than-threatened categories (74.3%). Moreover, only 52.3% of the species have some of its calls deposited in the main scientific sound collections. Our findings evidence remarkable knowledge gaps on advertisement calls of Brazilian anuran species, emphasizing the need of further efforts in standardizing and increasing the description of anuran calls for their application in studies of the behaviour, ecology, biogeography or taxonomy of the species.

Anuran Species Richness, Composition, and Breeding Habitat Preferences: a Comparison between Forest Remnants and Agricultural Landscapes in Southern Brazil.

Fabrício Hiroiuki Oda, Vinicius Guerra Batista, Priscilla Guedes Gambale, Fabio Teruo Mise, Fagner de Souza, Sybelle Bellay, Jean Carlo G. Ortega, and Ricardo Massato Takemoto (2016) The expansion of agriculture causes habitat loss and fragmentation that negatively affects biodiversity. We analyzed the species richness, composition and habitat preferences of anuran species in aquatic habitats in mesophytic semideciduous Atlantic Forest remnants and surrounding agricultural landscapes in southern Brazil, between April 2011 and March 2013. Nineteen anuran species, belonging to 11 genera and 5 families, were recorded. Species richness was similar between the forest remnants and the agricultural landscapes (18 and 19 species, respectively). Anuran species composition was associated with habitat type and the number of vegetation types in breeding habitats. Most species preferred breeding habitats in the agricultural landscape. Our results suggest that the anuran species recorded have access to both forest remnants and agricultural landscapes, as species richness in the two areas was similar. Habitat type and the number of vegetation types may influence species composition, because vegetation provides shelter and calling sites for anurans, which breed mainly in lentic water bodies. Thus, to maintain anuran populations in fragmented landscapes, it is important to preserve artificially constructed bodies of water within the agricultural landscape and on the forest edge.

Anfíbios anuros associados a corpos d'água do sudoeste do estado de Goiás, Brasil / Anuran amphibians associated to water bodies in Southwest of Goiás State (Brazil)

O Cerrado é o segundo maior bioma brasileiro e é considerado um dos mais importantes hotspots de biodiversidade. Neste bioma foram registradas cerca de 150 espécies de anuros, das quais 30 por cento são endêmicas. Entretanto, existem muitas áreas ainda não inventariadas, nas quais não se conhece quase nada sobre a diversidade de anuros. Assim, neste estudo apresentamos informações referentes a anurofauna do sudoeste do Estado de Goiás (Brasil Central), a qual vem sendo modificada principalmente pela agropecuária. Nesta região, 45 corpos d'água foram amostrados entre os meses de novembro/2007 a fevereiro/2008 e novembro/2008 a março/2009, localizados próximos a plantações de soja, cana-de-açúcar, pastagem e vegetação nativa. No total, foram registrados adultos e girinos de 36 espécies de anuros, a maioria comum de áreas abertas. As curvas de acumulação de espécies, tanto para adultos quanto para girinos, apresentaram a formação de uma assíntota, o que indica uma baixa probabilidade de registro de novas espécies mesmo com a amostragem de outros corpos d'água. Nesta área com forte influência de impactos agrícolas, a riqueza encontrada representa aproximadamente 1/4 do total de espécies conhecidas para o bioma Cerrado.

The Cerrado is the second largest biome in Brazil and is considered one of most important among the biodiversity hotspots. In this biome can be found about 150 anurans species, from which 30 percent are endemic. However, there are many Cerrado areas that have little information gathered about the anuran biodiversity. Thus, in this study we present the result of an inventory of anurans species from the southwest region of Goiás State (Central Brazil). In this region, we sampled 45 water bodies, located near soybean and sugar-cane cultures, pastures and natural vegetation, from November/2007 to February/2008 and from November/2008 to March/2009. Altogether, adults and tadpoles of 36 species were registered, with the majority of species registered in association to open areas. The rarefied curve of species richness show an asymptote formation, which indicates that the chance to add species to the inventory is low, even with additional habitats sampling. Therefore, our results reveal high species richness in the present sampled region, which represented almost one fourth of all species found in Cerrado.