Results: 35

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, ...

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...

Identificación molecular y diversidad genética de las especies de nematodos Globodera rostochiensis y G. pallida en regiones productoras de papa de Guatemala

Cienc. tecnol. salud; 9 (2), 2022
En Guatemala, la producción del cultivo de papa se ve afectada por los nematodos Globodera rostochiensis y Globo-dera pallida. La capacidad de ambas especies para formar quistes complica su control y provoca el aumento de sus poblaciones. En Guatemala se reporta la presencia de ambas especies de nematod...

Mobilization of seed storage proteins is crucial to high vigor in common bean seeds

Ciênc. rural (Online); 52 (2), 2022
Seed germination is a complex process controlled by many factors, in which physical and biochemical mechanisms are involved and the mobilization of reserves is crucial for this process to occur. Although, seed reserve mobilization is usually thought to be a post-germination process, seed reserve proteins...

Actn3 gene polymorphism and factors associated with functional performance in elderly women assisted in primary health care

ABSTRACT Objective: To analyze potential influences of the R/X genetic polymorphism of the ACTN3 gene, as well as of anthropometric and metabolic characteristics on the functional performance of elderly women assisted in primary health care. Method: One hundred and forty-one elderly women were assessed i...

Sequence analysis of the internal transcribed spacer 2 (ITS2) region of rDNA for identifying Trichogramma species and evaluating genetic diversity

Braz. j. biol; 81 (4), 2021
Abstract Species of Trichogramma Westwood, 1833 (Hymenoptera: Trichogrammtidae) are frequently used as biological control agents against Lepidoptera, but practical application of these egg endoparasitoids are complicated because of their complex taxonomy. This study aimed to compare sequences of internal...

DNA Barcoding unveils cryptic lineages of Hoplias malabaricus from Northeastern Brazil

Braz. j. biol; 81 (4), 2021
Abstract The trahira or wolf fish - Hoplias malabaricus- is a valid species, although recent cytogenetic and molecular studies have indicated the existence of a species complex. In this context, the present study analyzed the mitochondrial COI marker to determine the levels of genetic diversity of specim...

Population structure and phylogenetic relationships in Brassica rapa L. subspecies by using isozyme markers

Braz. j. biol; 81 (3), 2021
Abstract The present study aimed to assess population structure and phylogenetic relationships of nine subspecies of Brassica rapa L. represented with thirty-five accessions cover a wide range of species distribution area using isozyme analysis in order to select more diverse accessions as supplementary ...

Phenotypic and genetic variation of Triatoma costalimai (Hemiptera: Reduviidae)

Abstract INTRODUCTION: We aimed to study intraspecific variation in Triatoma costalimai, a potential vector of Chagas disease present in Brazil and Bolivia. METHODS: We analyzed phenotypic (connexivum color patterns, wing morphometrics) and genetic variation (16S mtDNA) of three Brazilian T. costalima...

Systematic review on the biology, ecology, genetic diversity and parasite transmission potential of Panstrongylus geniculatus (Latreille 1811) in Latin America

Mem. Inst. Oswaldo Cruz; 116 (), 2021
Panstrongylus geniculatus (Latreille, 1811) is the triatomine with the largest geographic distribution in Latin America. It has been reported in 18 countries from southern Mexico to northern Argentina, including the Caribbean islands. Although most reports indicate that P. geniculatus has wild habitats, ...