A5003854294- Chromosomal and Genetic Variations
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Fish biology, ecology, and behavior
- Genomics and Phylogenetic Studies
- Genetic diversity and population structure
- Animal Genetics and Reproduction
- Advanced biosensing and bioanalysis techniques
- Plant Reproductive Biology
- Fish Biology and Ecology Studies
- CRISPR and Genetic Engineering
- Fish Ecology and Management Studies
- International Maritime Law Issues
- Aquaculture disease management and microbiota
Universidade Federal de São Carlos
2019-2025
Charadriiformes, which comprises shorebirds and their relatives, is one of the most diverse avian orders, with over 390 species showing a wide range karyotypes. Here, we isolated characterized whole collection satellite DNAs (satDNAs) at both molecular cytogenetic levels its representative species, named wattled jacana (
Our comprehension of avian karyotypes still needs to be improved, especially for Suliform birds. To enhance understanding chromosomal evolution in this order, we conducted conventional and molecular cytogenetic analysis five species, named Sula dactylatra, S. leucogaster, sula (Sulidae), Fregata magnificens (Fregatidae), Nannopterum brasilianum (Phalacrocoracidae). The diploid chromosome number dactylatra leucogaster was established as 2n = 76 males, 75 females, but displayed a karyotype...
Although cytogenetics studies in cuckoos (Aves, Cuculiformes) have demonstrated an interesting karyotype variation, such as variations the chromosome morphology and diploid number, their organization evolution, relation with other birds are poorly understood. Hence, we combined conventional molecular cytogenetic approaches to investigate homologies between chicken smooth-billed ani (Crotophaga ani). Our results demonstrate extensive reorganization C. ani, interchromosomal rearrangements...
Scleropages formosus (Osteoglossiformes, Teleostei) represents one of the most valued ornamental fishes, yet it is critically endangered due to overexploitation and habitat destruction. This species encompasses three major color groups that naturally occur in allopatric populations, but evolutionary taxonomic relationships S. varieties remain uncertain. Here, we utilized a range molecular cytogenetic techniques characterize karyotypes five phenotypes, which correspond occurring variants: red...
Lebiasinidae fishes have been historically neglected by cytogenetical studies. Here we present a genomic comparison in eleven species, addition to review of the ribosomal DNA sequences distribution this family. With that, develop ten sets experiments order hybridize representative species from genus Copeina, Copella, Nannostomus, and Pyrrhulina metaphase plates Lebiasina melanoguttata. Two major pathways on chromosomal evolution these can be recognized: (i) conservation 2n = 36 bi-armed...
Lebiasinidae is a small fish family composed by miniature to small-sized fishes with few cytogenetic data (most of them limited descriptions diploid chromosome numbers), thus preventing any evolutionary comparative studies at the chromosomal level. In present study, we are providing, first for red spotted tetra, Copeina guttata, including standard karyotype, C-banding, repetitive DNA mapping fluorescence in situ hybridization (FISH) and genomic (CGH), providing patterns novel insights into...
Abstract Multiple sex chromosomes usually arise from chromosomal rearrangements which involve ancestral chromosomes. There is a fundamental condition to be met for their long-term fixation: the meiosis must function, leading stability of emerged system, mainly concerning segregation multivalent. Here, we sought analyze degree differentiation and meiotic pairing properties in selected fish multiple chromosome system present wolf-fish Hoplias malabaricus (HMA). This species complex encompasses...
(Charadriidae; Charadriiformes) comprises around 20 species commonly referred to as lapwings. In this study, by integrating cytogenetic and genomic approaches, we assessed the satellite DNA (satDNA) composition of one typical species,
In this work, we trace the dynamics of satellite DNAs (SatDNAs) accumulation and elimination along pathway W chromosome differentiation using well-known Triportheus fish model. stands out due to a conserved ZZ/ZW sex system present in all examined species. While Z is species, invariably smaller exhibits differences size morphology. The presumed ancestral comparable that T. auritus, contains 19 different SatDNA families. Here, by examining five additional showed majority these repetitive...
Abstract Despite several difficulties in chromosomal analyses of small-sized fishes, the cytogenetics Lebiasinidae was largely improved last years, showing differential patterns evolution inside family. In this context, it has been shown that genus Lebiasina preserves its karyotypic macrostructure, composed 2n = 36 chromosomes, whereas other genera generally present higher 2n. This study focused on comparative three species, one them analyzed here for first time, using conventional and...
The Cuculiformes are a family of over 150 species that live in range habitats, such as forests, savannas, and deserts. Here, bacterial artificial chromosome (BAC) probes (75 from chicken 14 zebra finch macrochromosomes 1–10 +ZW for microchromosomes 11–28 (except 16)) were used to investigate homologies between the squirrel cuckoo ( Piaya cayana). In addition, repetitive DNA applied characterize organization explore role these sequences karyotype evolution P. cayana. We also BAC 17 Z guira...