A5029196880- Chromosomal and Genetic Variations
- Genetic diversity and population structure
- Genomics and Phylogenetic Studies
- Animal Genetics and Reproduction
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Ichthyology and Marine Biology
- Identification and Quantification in Food
- CRISPR and Genetic Engineering
- Advanced biosensing and bioanalysis techniques
- Aquaculture Nutrition and Growth
- Marine and fisheries research
- Plant and animal studies
- Morphological variations and asymmetry
- Coral and Marine Ecosystems Studies
- Parasite Biology and Host Interactions
- Reproductive biology and impacts on aquatic species
- Cephalopods and Marine Biology
- Wildlife Ecology and Conservation
- Insect behavior and control techniques
- Evolution and Paleontology Studies
- Crustacean biology and ecology
- Essential Oils and Antimicrobial Activity
- Genomics and Chromatin Dynamics
Universidade Federal do Rio Grande do Norte
2014-2024
Southwest Bahia State University
2017
Universidade Federal de São Carlos
2016
A medium-sized Octopus species is described based on material collected in shallow equatorial waters around the oceanic islands of Fernando de Noronha Archipelago, Rocas Atoll, St Peter and Paul Archipelago mainland northeastern Brazil. The new species, insularis, morphologically, also characterized by large mitochondrial subunit ribosomal RNA gene (mt 16S rDNA). has relatively short stout arms, rugose reddish brown skin preserved specimens, 8 to 11 gill lamellae outer demibranchs, small...
Approximately 90 species in the genus <i>Leporinus</i> (Characiformes, Anostomidae) are known, and most of them do not present differentiated sex chromosomes. However, there is a group 7 that share heteromorphic ZW system. In all these species, W chromosome largest one karyotype mostly heterochromatic. We investigated distribution several microsatellites genome 4 possess Our results showed very large accumulation on This finding supports presence an interconnection between...
Inoculation with bacterial or fungal antigens that stimulate cell proliferation has been widely used to obtain metaphases for cytogenetic studies of fish. We evaluated the potential new pharmaceutical compounds as mitogenic agents in fish, testing efficacy Aminovac (mixed and epsilon-acetamidocaproic acid), Broncho-Vaxom (bacterial lysate) Estimoral increase mitotic index fingerlings Neotropical fish Prochilodus brevis (Prochilodontidae) Hoplias malabaricus (Erythrinidae), which were...
Cytogenetic studies were done on three Pomacentridae species of the genus Chromis. The karyotype C. multilineata consisted 48 acrocentric chromosomes (FN = 48), insolata had 2n 46-47 (3-4M+6SM+36-38A; FN 56) and flavicauda 39 (9M+6SM+24A; 54). Robertsonian polymorphisms detected in flavicauda. All small heterochromatic blocks restricted to centromeric regions. Nucleolar organizer regions (NORs) telomeric position a medium chromosome pair non-homologous both insolata. FISH with probe no...
Abstract Despite substantial progress, there are still several gaps in our knowledge about the process of sex chromosome differentiation. The degeneration sex-specific some species is well documented, but it not clear if all follow same evolutionary pathway. accumulation repetitive DNA sequences, however, a common feature. To better understand this involvement, fish emerge as excellent models because they exhibit wide variety and determining systems. Besides, have much younger chromosomes...
Summary The variation in cranial size of the crab‐eating f ox C erdocyon thous was analysed relation to latitude and several environmental variables throughout its distribution S outh A merica. We tested existence clines determine whether this canid follows B ergmann's rule north south E quator. Also, using niche modelling, we climatic changes during last glaciation could have influenced species. quantified cranium . ( n = 300). data were divided into two groups: (i) quator 163) (ii) 137)....
The genus Clarias (Clariidae, Siluriformes) contains at least 61 species naturally spread over vast regions of Asia, India and Africa. However, have also been introduced in many different countries represent the most widespread catfishes world. These fishes are known as "walking catfishes" due to their ability move land. A large degree chromosomal variation has previously found this family, mainly using conventional cytogenetic investigations, with diploid chromosome numbers ranging between...
The Erythrinidae fish family is an excellent model for analyzing the evolution of sex chromosomes. Different stages chromosome differentiation from homomorphic to highly differentiated ones can be found among species this family. Here, whole painting, together with cytogenetic mapping repetitive DNAs, highlighted evolutionary relationships chromosomes different erythrinid and genera. It was demonstrated that follow distinct pathways inside Reciprocal hybridizations probes revealed autosomal...
Sexual dimorphism is often observed in Crustaceans. Considering the great diversity of this subphylum, only few reports are found literature and most mainly based on traditional morphometry. The present study uses geometric morphometrics analysis to identify sexual by shape variation overexploited semiterrestrial crab Ucides cordatus , species with social economic importance South America. Comparative morphology analyses were performed using outer face propodus major cheliped, dorsal...
Karyotype stasis, characterized by the absence of changes in chromosome number, genomic structure, and ploidy, is a recurrent condition many biological groups, such as plants, amphibians, birds, fishes. In fishes, Percomorpha clade (>17,000 species), especially, its largest series, Eupercaria (>6,000 species 161 families), shows an extensively shared karyotype with 2n=48 acrocentrics; phylogenetic extension this series still unknown. Haemulidae (grunts) .a bounds zoogeographic marine...
The chromosomes of two neotropical freshwater fish species, namely Liposarcus anisitsi (Siluriformes, Loricariidae) and Leporinus elongatus (Characiformes, Anostomidae), were investigated by means C-banding, Ag-NORs, fluorochrome staining banding hot saline solution (HSS) treatment, to reveal patterns heterochromatin differentiation. karyotype L. is described for the first time. Staining with GC-specific fluorescent antibiotic mithramycin (MM) revealed bright signals in some C-banded blocks...