Results 41 to 50 of about 630,100 (244)

Phenotypic pattern over centric fusion clinal variation in the water-hyacinth grasshopper, Cornops aquaticum (Orthoptera: Acrididae) [PDF]

, 2018
The water-hyacinth grasshopper, Cornops aquaticum, occurs in freshwater environments in the New World between latitudes 23°N and 35°S. At the southernmost margin of this distribution the populations are polymorphic for three centric fusions (Robertsonian
Bownes, Bownes, Capello, Center, Colombo, Dolskiy, Dumas, Endler, Excoffier, Franceschini, Hewitt, Hewitt, John, Lemeunier, Mart, Mesa, Mesa, Oberholzer, PAST, Taffarel, White, Wolff   +21 more
core   +1 more source

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

The Anatomical Record, EarlyView.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano, Aline M. Ghilardi, Jonatan Kaluza, Agustín G. Martinelli   +3 more
wiley   +1 more source

A conspectus on the Canacidae (Diptera) of Brazil [PDF]

, 2012
Species of Canacidae sensu lato of Brazil are reviewed, including the subfamilies Canacinae and Tethininae. Included are seven species in five genera with two species, Nocticanace austra and N. packhamorum, from southern Brazil being newly described.
Mathis, Wayne, Marinoni, Luciane
core   +2 more sources

Systematic review and meta-analysis of bovine cysticercosis in Brazil : current knowledge and way forward [PDF]

, 2020
Background Taenia saginata taeniosis/cysticercosis has been well studied in several countries. Brazil is one of the most important beef exporting countries and has one of the highest cattle population size in the world.
Gabriël, Sarah, Rossi, Gabriel Augusto Marques, Van Damme, Inge   +2 more
core   +2 more sources

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

Narrativas sobre o “criador”: práticas e produções do espaço em comunidades rurais de Irati, Paraná

Revista NUPEM, 2019
O objetivo é abordar historicamente as atividades inventivas e produtivas do espaço de sujeitos em três comunidades da área rural de Irati. Nesses locais, há a predominância numérica de descendentes de italianos, cujas narrativas minimizam a participação
Helio Sochodolak, Regiane Maneira
doaj   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Characterization of the extracellular matrix from human and dog umbilical cords

The Anatomical Record, EarlyView.
Abstract The extracellular matrix is important for maintaining tissue morphogenesis and homeostasis; it can also be used as a biomaterial for the production of biological scaffolds. Particularly, the umbilical cord has shown potential in the production of scaffolds for small‐diameter vessels.
Ana Carla Mendonça, Roberta Losi Guembarovski, Carlos Alberto Miqueloto, Alda Fiorina Maria Losi Guembarovski, Caio Garcia Barbosa da Silva, Laís Capelasso Lucas Pinheiro, Phelipe Oliveira Favaron   +6 more
wiley   +1 more source

La población indígena y afrodescendiente de Paraná. Categorías socioétnicas entre 1755-1824

Memoria Americana, 2019
La actual ciudad de Paraná tuvo sus orígenes durante las primeras décadas del siglo XVIII, en el dinámico espacio de la frontera santafesina conocida como “la otra banda del Paraná”.
Alejandro Richard
doaj  

Species richness and beta-diversity of aquatic macrophytes assemblages in three floodplain tropical lagoons: evaluating the effects of sampling size and depth gradients [PDF]

, 2002
Using aquatic macrophyte data gathered in three lagoons of the Paraná River floodplain we showed a strong effect of sample size on species richness. Incidence-based species richness estimators (Chao 2, jackknife 1, jackknife 2, incidence-based coverage ...
Bini, L., Souza, D., Thomaz, S.
core