Results 31 to 40 of about 6,056 (182)

Genetic Variation in ADHD‐Related Risk Genes in an Indigenous Population of the Amazon

American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, EarlyView.
ABSTRACT Attention‐Deficit/Hyperactivity Disorder (ADHD) is a highly heritable neurodevelopmental disorder; however, its genetic architecture remains poorly explored in Indigenous populations. This study aimed to analyze and characterize genetic variation in 11 genes (ADGRL3, CDH8, DCC, DUSP6, FOXP1, FOXP2, MEF2C, PCDH7, SEMA6D, SORCS3, and ST3GAL3 ...
Hirlesson Paixão de Matos, Natasha Monte, Kaio Evandro Cardoso Aguiar, Rita de Cássia Calderaro, Aline Pasquini Santos, Juliana Carla Gomes Rodrigues, André Maurício Ribeiro‐Dos‐Santos, Sandro José De Souza, Ândrea Ribeiro‐Dos‐Santos, João Farias Guerreiro, Sidney Emanuel Batista Dos Santos, Ney Pereira Carneiro Dos Santos   +11 more
wiley   +1 more source

An airborne regional carbon balance for Central Amazonia [PDF]

Biogeosciences, 2007
We obtained regional estimates of surface CO₂ exchange rates using atmospheric boundary layer budgeting techniques above tropical forest near Manaus, Brazil.
J. Lloyd, O. Kolle, H. Fritsch, S. R. de Freitas, M. A. F. Silva Dias, P. Artaxo, A. D. Nobre, A. C. de Araújo, B. Kruijt, L. Sogacheva, G. Fisch, A. Thielmann, U. Kuhn, M. O. Andreae   +13 more
doaj  

Neuroanatomical diversity in Teleocichla with new volumetric and histological insights into the encephalon of Teleocichla monogramma Kullander 1988

The Anatomical Record, EarlyView.
Abstract Teleocichla comprises small cichlids that inhabit the rapid streams of Amazonian rivers; however, there has been limited research on their encephalon morphology. This study examined the neuroanatomy of four species, focusing on volumetric measurements of their encephalon subregions, and providing a histological description of the encephalon of
Renan Leão‐Reis, Keila Xavier Magalhães, Thiago Nilton A. Pereira, Janice Muriel‐Cunha, Alberto Akama   +4 more
wiley   +1 more source

Influence of edapho-climatic factors on the sporulation and colonization of arbuscular mycorrhizal fungi in two Amazonian native fruit species

Brazilian Archives of Biology and Technology, 2010
Arbuscular mycorrhizal fungi (AMF) colonization and spore numbers in the rhizosphere of two fruit species, Paullinia cupana Mart. and Theobroma grandiflorum Schum., growing in a terra firme ecosystem in Central Amazonia were studied from August 1998 to ...
Arlem Nascimento de Oliveira, Luiz Antonio de Oliveira   +1 more
doaj   +1 more source

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

The Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga, Verônica Oliveira‐Bahia, Maria Auxiliadora Ferreira, José Ribamar Felipe Marques, Diva Araújo Guimarães   +4 more
wiley   +1 more source

Biome-Scale Forest Properties in Amazonia Based on Field and Satellite Observations

Remote Sensing, 2012
Amazonian forests are extremely heterogeneous at different spatial scales. This review intends to present the large-scale patterns of the ecosystem properties of Amazonia, and focuses on two parts of the main components of the net primary production: the
Liana O. Anderson
doaj   +1 more source

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

Cardiac morphological and morphometric analysis of Ardea alba

The Anatomical Record, EarlyView.
Abstract Ardea alba (Linnaeus, 1758) is a widely distributed heron species whose cardiovascular morphology remains poorly described. This study aimed to characterize the cardiac morphology and morphometry of adult A. alba. Ten specimens were analyzed using radiographic, morphometric, histological, scanning electron microscopy, and three‐dimensional ...
Julia Vaz Feio, Max Alex Santos Ferreira, Elane Guerreiro Giese, Érika Branco, Antônio Basílio Guerreiro Junior, Ana Rita de Lima   +5 more
wiley   +1 more source

Fauna de coleópteros aquáticos (insect: coleoptera) na Amazônia central, Brasil Aquatic Beetlefauna (insecta: coleoptera) in Central Amazonia, Brazil

Acta Amazonica, 2003
Foram coletados 888 exemplares de Coleoptera aquáticos nos municípios de Manaus, Manacapuru e Presidente Figueiredo (AM), de fevereiro de 2000 a agosto de 2002, distribuídos em 12 famílias, 50 gêneros e 88 espécies ou morfoespécies.
Cesar João Benetti, Neusa Hamada
doaj   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source