A5071127009- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Chromosomal and Genetic Variations
- Animal Behavior and Reproduction
- Lepidoptera: Biology and Taxonomy
- Fish biology, ecology, and behavior
- Animal Vocal Communication and Behavior
- Genomics and Phylogenetic Studies
- Fish Biology and Ecology Studies
- Avian ecology and behavior
- Animal and Plant Science Education
- Aquaculture disease management and microbiota
- Ocular Infections and Treatments
Centro Científico Tecnológico Patagónico
2013-2022
Consejo Nacional de Investigaciones Científicas y Técnicas
2013-2020
National University of Patagonia San Juan Bosco
2020
Instituto de Biología Subtropical
2013
We describe the external morphology, buccal cavity, chondrocranium, hyobranchial skeleton, and musculature of tadpole Rhinella achavali (Achaval's Toad), along with its karyotype. Tadpoles were found in a small, permanent stream showing schooling behavior. The characterization proposed species groups within cannot be currently improved using larval as it seems to much conserved this genus. Buccal cavity morphology confirms distinctiveness veraguensis (Veragua Toad) group respect other known...
We present a cytogenetic survey of the basal bufonid genus Melanophryniscus that covered 14 25 species currently recognized, representing three phenetic groups: M. moreirae, stelzneri, and tumifrons. All presented diploid chromosome complement constituted by 11 bi-armed pairs (2n = 2x 22; FN 44). Some remarkable differences were observed between pair 4 was metacentric in tumifrons group (also with distinctive C-positive block) but submetacentric stelzneri sanmartini (M. moreirae group); 5...
Vision is one of the main sensory systems in amphibians, and eye structure highly associated with habitat conditions. The ontogeny, as well adult structure, has been studied only a few species. life change after metamorphosis accompanied by changes visual environment. aim this work to describe ontogeny Pleurodema bufoninum compare it that somuncurense. Specimens both species were processed for histology analysis at different stages development, including tadpole, postmetamorphic, forms. Eyes...
The first information on the morphometry and sexual size dimorphism of sympatric South American (Sterna hirundinacea), Cayenne (Thalasseus sandvicensis eurygnathus) Royal (T. maximus maximus) terns from Patagonia region in Argentina is provided, a discriminant analysis to sex three species used. Morphological characters were obtained Terns (n = 83), 63) 20). All sexed using polymerase chain reaction-based molecular techniques. Sexes tern only slightly dimorphic size. Male significantly...
The genus Atelognathus is composed of five species that occur in the southernmost regions Argentina and Chile. It belongs to Batrachylidae, one few endemic anuran families from Patagonia. More than 50 yr ago, it was concluded A. reverberii had a diploid chromosomal complement 2N = 26, feature later reported for other congenerics. In this work, we describe cytogenetics all known (A. nitoi, patagonicus, praebasalticus, reverberii, solitarius) two additional undetermined populations....
The occurrence of Alsodes coppingeri is confirmed in Argentina for the first time, from Santa Cruz Province, close to Lago del Desierto. Specimens this species were identified according external morphology and DNA sequences. These new records are at same latitude than type locality (Puerto Río Frío, Chile) about 100 km eastwards a straight-line, but opposite side Andes mountain range Southern Continental Ice Fields. Five localities Chile (Caleta Tortel, Canal Michel, Laguna Caiquenes, Puerto...