Results 91 to 100 of about 20,976 (294)

The relationship between form and function of the carnivore mandible

The Anatomical Record, EarlyView.
Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley   +1 more source

Seasonal variation in wing geometry of the malaria vector Anopheles maculatus (Diptera: Culicidae) in Western Thailand

Journal of Advanced Veterinary and Animal Research
Objective: Anopheles maculatus is recognized as an important malaria vector in Thailand and other countries within the Greater Mekong Subregion. This study employed both landmark and outline-based geometric morphometrics (GM) approaches to assess ...
Suchada Sumruayphol, Tanawat Chaiphongpachara, Sedthapong Laojun   +2 more
doaj   +1 more source

Population Divergence of Melipona scutellaris (Hymenoptera: Meliponina) in Two Restricted Areas in Bahia, Brazil

Sociobiology, 2014
Melipona scutellaris Latreille has great economic and ecological importance, especially because it is a pollinator of native plant species. Despite the importance of this species, there is little information about the conservation status of their ...
Cristovam Alves Lima Júnior, Carlos Alfredo Lopes Carvalho, Lorena Andrade Nunes, Tiago Maurício Francoy   +3 more
doaj   +1 more source

Three-dimensional geometric morphometrics for studying floral shape variation [PDF]

, 2010
Variation in floral shape is of major interest to evolutionary and pollination biologists, plant systematists and developmental geneticists. Quantifying this variation has been difficult due to the three-dimensional (3D) complexity of angiosperm flowers.
Johnson, S D, Linder, H P, Ponce de León, M S, Van der Niet, T, Zollikofer, C P E   +4 more
core   +1 more source

Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals

The Anatomical Record, EarlyView.
Abstract New data on the equine aortic valve obtained using advanced techniques is especially important given the greater availability of animal models for translational research. Here we characterized the morphological and morphometric aspects of the equine aortic valve from 60 healthy hearts collected at equine abattoirs.
Vitor Pires Pereira, Victoria Brondani de Oliveira, Carlos Eduardo Seyfert, Luciano de Morais‐Pinto   +3 more
wiley   +1 more source

Directional selection effects on patterns of phenotypic (co)variation in wild populations. [PDF]

, 2016
Phenotypic (co)variation is a prerequisite for evolutionary change, and understanding how (co)variation evolves is of crucial importance to the biological sciences.
Assis, APA, Hubbe, A, Marroig, G, Patton, JL   +3 more
core   +3 more sources

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

The Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx, Oliver Kersten, Youri van den Hurk, Brenna A. Frasier, Richard Sabin, Bastiaan Star, James H. Barrett   +6 more
wiley   +1 more source

Morphological Discrimination of Greek Honey Bee Populations Based on Geometric Morphometrics Analysis of Wing Shape

Journal of Apicultural Science, 2014
Honey bees collected from 32 different localities in Greece were studied based on the geometric morphometrics approach using the coordinates of 19 landmarks located at wing vein intersections.
Charistos Leonidas, Hatjina Fani, Bouga Maria, Mladenovic Mica, Maistros Anastasios D.   +4 more
doaj   +1 more source

Ontogeny of murine bony semicircular canal form

The Anatomical Record, EarlyView.
Abstract The labyrinthine geometry and functional anatomy of the semicircular canals have intrigued scientists for decades, and there has been considerable interest in understanding how these complex structures grow and develop with evidence emerging from human studies that size maturation occurs exceptionally early by comparison with other systems ...
Marcela Cárdenas‐Serna, Nathan Jeffery   +1 more
wiley   +1 more source

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source