A5016947571- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Aquaculture Nutrition and Growth
- Ichthyology and Marine Biology
- Protease and Inhibitor Mechanisms
- Prostate Cancer Diagnosis and Treatment
- Reproductive biology and impacts on aquatic species
- Sperm and Testicular Function
- Wine Industry and Tourism
- Mediterranean and Iberian flora and fauna
- Horticultural and Viticultural Research
- Immunotherapy and Immune Responses
- Prostate Cancer Treatment and Research
Universidade de Brasília
2022
Universidade Federal de Mato Grosso do Sul
2021
Universidade Estadual de Campinas (UNICAMP)
2013-2020
Universidade Estadual Paulista (Unesp)
2012-2014
Gephyrocharax machadoi, new species, is described from tributaries of the rio Sepotuba, upper Paraguai basin, Mato Grosso state, Brazil. The species distinguished its congeners, except major, by presenting two modified scales on ventral caudal-fin lobe (pouch scales): a larger, sexually dimorphic scale, slightly superior and anterior in position, followed smaller, posterior ventrally placed accessory scale (vs. single pouch without scales). machadoi differs G. major gap (more conspicuous...
The Stevardiinae are a high diverse subfamily of Characidae, the richest family Neotropical fishes. Many species inseminating (internal fertilization) and consequently display morphology reproductive organs sperm cells. We test monophyly internal relationships through phylogenetic analysis based on new set morphological characters, including traits, combined with publicly available molecular data. defined 176 characters from general primary secondary sexual coded for 54 species. Analyses...
This study evaluated the diet and reproductive aspects of population Pimelodus maculatus around net cage fish farming in order to assess possible impacts this activity. Monthly collections were performed from March 2008 February 2009 on two populations: one close cages (NC) an area not influenced by these denominated "reference site" (RS). Results Alimentary Index (AI), Gonadosomatic (GSI), potential histological analysis obtained for both NC RS populations. The used leftover food (ration)...
Abstract Spermiogenesis and sperm ultrastructure from 21 species of M oenkhausia others related genera are described. To evaluate the phylogenetic signals, 18 unordered characters were utilized in implied weighting analysis through program TNT 1.1. Four variations spermiogenesis found. In earliest spermatids, nucleus can be positioned lateral, eccentric, strongly eccentric or nearly medial relation to distal centriole. The nuclear rotation present absent. These processes intermediate T ype I...
Abstract Prostate development and function are regulated by androgens. Epithelial cell apoptosis in response to androgen deprivation is caspase‐9‐dependent peaks at Day 3 after castration. However, isolated epithelial cells survive the absence of Znf142 showed an on‐off expression pattern intraepithelial CD68‐positive macrophages, with on‐phase Rats treated gadolinium chloride deplete macrophages a significant drop apoptosis, suggesting causal relationship between apoptosis. Intraepithelial...
Spermiogenesis and spermatozoa of representatives the genera Lebiasina Piabucinaare described. is quite similar among all analyzed species these identified as Type II. In this type spermiogenesis, flagellum earliest spermatids lies lateral to nucleus. A slight movement nucleus towards centriolar complex observed. late spermatids, slightly elongates flagellum. The formation two striated rootlets apparently occurs in early/intermediate spermatids. Lebiasinaand Piabucina share (1) a drop-shaped...
Abstract The phylogeny of the very diverse Neotropical fish family Characidae has been subject several recent contributions based on morphological characters, molecular data or both in combined analyses. In cases conflict between these kinds data, resolution by analyses most often tends to agree with evidence, given disproportionate number characters it contains comparison datasets. This happens especially after advent massive DNA sequencing methods. this contribution, we present...
Spermiogenesis and spermatozoa in six genera of the African family Alestidae plus Neotropical genus Chalceusare described. is quite similar all identified as Type I its variants. In spermiogenesis, flagellum earliest spermatids lies lateral to nucleus, rotation nucleus towards centriolar complex observed. Nuclear complete reaching 90 degrees Bryconalestes longipinnis, Brachypetersius altus, Brycinus imberi, B. lateralis, Alestopetersius compressus; incomplete 20 Micralestes acutidensand...