Results: 348

Reduced genetic diversity and the success of the invasive peacock bass (Cichliformes: Cichlidae)

Braz. j. biol; 84 (), 2024
Abstract Several species of Cichla successfully colonized lakes and reservoirs of Brazil, since the 1960's, causing serious damage to local wildlife. In this study, 135 peacock bass were collected in a reservoir complex in order to identify if they represented a single dominant species or multiple ones, ...

Heavy metal and genetic diversity studies in three populations of Snail (Achatina achatina Linnaeus, 1758) from Southwest, Nigeria

Braz. j. biol; 84 (), 2024
Environmental pollutants may often alter the genetic components of natural populations. In this study, heavy metals and genetic diversity in land snail (Achatina achatina) from three populations of south-western Nigeria were investigated, using the Atomic Absorption Spectrometry and DNA Sequencing techno...

Genetic variations and phylogenetic relationship of genus Uromastyx from Punjab Pakistan

Braz. j. biol; 84 (), 2024
Abstract During the present study, specimens were collected from selected sites of Cholistan desert and Kalabagh Game Reserve, Punjab province, Pakistan. Each captured specimen was tagged with voucher number and morphometric measurements were taken. The average snout to vent length was 172.559±1.40 mm a...

Sorghum hybrids grown in hydroponics contrast for phosphorus use efficiency

Braz. j. biol; 84 (), 2024
Phosphorus (P) use efficiency is crucial for sorghum production. P acquisition efficiency is the most important component of P use efficiency. The early-stage evaluation of plant development is a useful tool for identifying P-efficient genotypes. This study aimed to identify sorghum hybrids that are effi...

Phylo-geographic analysis of whitefly on the basis of mitochondrial cytochrome oxidase 1 gene

Braz. j. biol; 84 (), 2024
Bemisia tabaci is a species complex that causes damage to its broad range of plant hosts through serious feeding. It transmits plant viruses of different groups to important agricultural crops. Some important cash crops of Pakistan are sugar cane, rice, tobacco and seed oil. It shows high genetic variabi...

Mitochondrial DNA diversity and maternal origins of Pakistani donkey

Braz. j. biol; 84 (), 2024
Domestic donkey plays a key role as a draft animal in rural economy of Pakistan where its population is increasing every year. The complete mtDNA control region of forty randomly sampled donkeys was PCR- amplified and sequenced bi-directionally using specific primers. Distinct mtDNA haplotypes obtained i...

Association of Fokl polymorphism of the VDR gene with systemic lupus erythematosus in an adolescent population of the Colombian Caribbean

Rev. colomb. reumatol; 30 (1), 2023
Introduction: Vitamin D and vitamin D receptor (VDR) polymorphisms are associated with autoimmune diseases including systemic lupus erythematosus (SLE). The aim of this study is to assess the genetic association between VDR polymorphisms: TaqI, ApaI, Bsml and FokI and SLE with serum levels of Vitamin D i...

Genetic relationships of the Yucatan black hairless pig with Iberian breeds using single nucleotide polymorfisms

To conduct ex-situ creole pig conservation programs, it is essential to determine which breeding animals will be used, preferentially those with a more significant Iberian genetic component to preserve their origin. This study used a Yucatan black hairless pigs (YBHP) subpopulation to e...

Genetic diversity of Macroptilium accessions considering the increase in air temperature

Biosci. j. (Online); 39 (), 2023
Climate changes can influence the genetic diversity of forage plants, which may contribute to the improvement and development of new species. Therefore, this research aimed to evaluate the influence of temperature increase on the genetic diversity of Macroptilium accessions based on morphoagronomic descr...

Genetic variability in the neurobiology of nicotine dependence: effects on smoking behavior

Abstract Background Smoking dependence is a chronic disease and a public health problem. The neurobiology of nicotine addiction can explain smoking behavior. This system has genetic variability that has been associated with vulnerability to dependence. Genetic variability in the neurobiology of smoking ...