Results 41 to 50 of about 231,595 (250)

Genetic Ancestry Reveals Historical Diversity of Formation Across Three Brazilian Communities of African Descent (Quilombos) in Central Brazil

American Journal of Human Biology, Volume 38, Issue 1, January 2026.
ABSTRACT Introduction Characterized as relatively isolated communities, many Brazilian quilombos were formed during the period of slavery in Brazil when enslaved persons (most of African descent) ran away or were abandoned by their enslavers. Quilombos in Central Brazil, whose settlement was more recent due to the relative isolation of the region ...
Sabrina Guimarães Paiva, Anna C. Rivara, Matheus de Castro Nóbrega, Rafaela de Cesare Parmezan Toledo, Maria de Nazaré Klautau‐Guimarães, Sidney Emanuel Batista dos Santos, Lorena Madrigal, Silviene Fabiana de Oliveira   +7 more
wiley   +1 more source

Estudo dos nervos do membro pélvico do Tamandua tetradactyla

Revista de Biologia Neotropical, 2017
O objetivo deste estudo foi descrever a distribuição dos nervos do membro pélvico do T. tetradactyla. Para tanto, foram utilizados quatro cadáveres de animais adultos cedidos pelo IBAMA-GO.
Warley Vieira de Freitas Paula, Ulisses Saraiva Nogueira, Viviane Souza Cruz, Edson José Benetti, Gabriel Qualhato, Júlio Roquete Cardoso   +5 more
doaj   +1 more source

Biomarker responses induced by bisphenol A on spermatogenesis in a Neotropical teleost fish are temperature-dependent

Ecotoxicology and Environmental Safety, 2021
Bisphenol A (BPA) is an organic synthetic compound used in the plastic industry with endocrine disrupting activity. Although it is frequently found in surface waters, few studies have investigated its impact on fish gametogenesis, particularly when ...
Yves Moreira Ribeiro, André Alberto Weber, Alessandro Loureiro Paschoalini, Davidson Peruci Moreira, Camila Ferreira Sales, Thais Victória Pires de Almeida, Mirra Angelina Neres, Nilo Bazzoli, Elizete Rizzo   +8 more
doaj   +1 more source

Drivers of plant phenolic concentration across global drylands

Journal of Ecology, Volume 114, Issue 1, January 2026.
This study advances the understanding of how biotic and abiotic stressors shape plant defence strategies in global drylands. The findings shed novel insights about how plant secondary metabolites and their associated functions shift in response to changes in climate and grazing pressure, two key global change drivers with significant implications for ...
Kaarina N. Shilula, Hugo Saiz, Emilio Guirado, Nicolas Gross, Yoann Le Bagousse‐Pinguet, Lucio Biancari, Yolanda Pueyo, Xoaquín Moreira, David J. Eldridge, Victoria Ochoa, Beatriz Gozalo, Sergio Asensio, Betty J. Mendoza, Enrique Valencia, Miguel García‐Gómez, Juan J. Gaitán, César Plaza, Jaime Martínez‐Valderrama, Fernando T. Maestre   +18 more
wiley   +1 more source

Description of Encephalon Morphology of Nile Tilapia Oreochromis niloticus (Linnaeus, 1758) (Perciformes: Cichlidae) From Brazil

Anatomia, Histologia, Embryologia, Volume 55, Issue 1, January 2026.
ABSTRACT The Nile tilapia (Oreochromis niloticus) is a cichlid species native to Africa and is widely farmed in tropical and subtropical regions around the world, making it one of the most commercially important aquaculture species. Despite its significance, there is still a lack of detailed anatomical descriptions of its brain.
Anna Luiza de Souza Pereira, Echily Sartori, Gabriela Munis Campos, Carolina Demétrio Ferreira, Pedro Pierro Mendonça, Cristiane dos Santos Vergilio   +5 more
wiley   +1 more source

Controlo da morfologia de filmes de polímeros com potenciais aplicações em células fotovoltaicas [PDF]

, 2010
No campo da investigação das células fotovoltaicas orgânicas, a obtenção da camada activa com morfologia “ideal” através de técnicas baratas é ainda um marco não atingido.
Farinhas, Joana
core  

Phylogenomic insights into helmet evolution in neotropical treehoppers (Hemiptera: Membracidae): Conserved morphological complexity across five subfamilies

Systematic Entomology, Volume 51, Issue 1, January‐March 2026.
Phylogenomic analyses of 2539 nuclear loci reveal robust relationships among major Membracidae lineages. Helmet shape complexity shows strong phylogenetic conservatism across genera, tribes and subfamilies. Pronotal modularity evolves across lineages, highlighting the developmental diversity of treehopper morphologies. Abstract We utilized genomic data
Ali Milanca Gutiérrez Aguilar, Esteban Alexis Vera Ortiz, Jorge Adilson Pinedo Escatel, Daniel Piñero, Marisol De‐la‐Mora Curiel   +4 more
wiley   +1 more source

CARACTERIZAÇÃO CITOGENÉTICA DA TAINHA,Mugil platanus(PISCES, MUGILIDAE)

Boletim do Instituto de Pesca, 2018
Os cromossomos mitóticos, as regiões organizadoras de nucléolos (RONs) e o padrão de distribuição de heterocromatina da tainha, Mugil platanus, que ocorre na região costeira do Sudeste do Brasil foram estudados.
Luciana Cardeliquio JORDÃO, Cláudio OLIVEIRA, Fausto FORESTI, Heloisa Maria GODINHO   +3 more
doaj  

New Species of Siparuna (Siparunaceae) IV [PDF]

, 2005
A new species of Siparuna (Siparunaceae), S. ficoides, is described, illustrated, and placed in a phylogenetic context based on morphological and DNA sequence data. The species, which is a monoecious subcanopy tree, is known from three collections made
Hausner, Gerlinde, Renner, Susanne S.
core   +1 more source

Phylogenomics‐based click‐beetle classification tackles multiple origins of phenotypic modifications

Systematic Entomology, Volume 51, Issue 1, January‐March 2026.
Using a concatenated dataset consisting of new genomic data from 73 species across 40 click‐beetle tribes and an earlier published, smaller dataset, we conducted the first 4200‐ortholog study targeting the phylogeny of Elateridae with the highest resolution to date.
Michal Motyka, Dominik Kusy, Elizabeth T. Arias, Ladislav Bocak   +3 more
wiley   +1 more source