Results 131 to 140 of about 1,074,895 (298)

Geometric Morphometrics Reveal Body Shape Variation in Freshwater Shrimps of the Genus Macrobrachium Lacking a Mandibular Palp (Formerly Pseudopalaemon Sollaud, 1911) (Decapoda: Palaemonidae)

Acta Zoologica, EarlyView.
ABSTRACT Shape variation in the cephalothorax of Macrobrachium species without mandibular palp using geometric morphometrics was used as a tool to support species differentiation and propose new diagnostic characters for taxonomic identification.
Thaís Arrais Mota, Ana Carla Soares da Silva, Lucas Jhones de Santana Neves, Carlos Eduardo Rocha Duarte Alencar, Fabrício Lopes Carvalho   +4 more
wiley   +1 more source

Evaluación del Perfil Nasal Mediante Morfometría Geométrica en una Muestra de Población Chilena. Implicancias Clínicas y Forenses [PDF]

, 2012
Schilling, A (Schilling, Alejandro). Univ Talca, Talca, ChileThe search of morphological patterns of nasal profile using traditional morphometrics has been the goal of several studies aiming to orient therapeutical planning and forensic techniques such ...
Galdames, I.S., Lopez, B., Schilling, A., Toro, V.   +3 more
core  

Integrative taxonomy reveals four new species of the armoured catfish genus Pareiorhina (Siluriformes: Loricariidae) from the upper Paraná River basin, Brazil

Journal of Fish Biology, EarlyView.
Abstract Four new species of the small‐sized armoured catfish genus Pareiorhina are described from mountain ranges in the Grande River drainage, upper Paraná River basin, based on morphological and molecular species delimitation methods. Molecular analyses based on the cytochrome oxidase subunit I (COI) marker recovered Pareiorhina as polyphyletic ...
Pedro L. C. Uzeda, Luana J. Sartori, Axel M. Katz, Felipe P. Ottoni, Wilson J. E. M. Costa, Francisco Langeani, Valter M. Azevedo‐Santos   +6 more
wiley   +1 more source

Hidden in morphology, revealed by molecular genetics: synonymization of Gogatea burmanicus (Chatterji, 1940) with Gogatea serpentum (Gogate, 1932) (Digenea: Cyathocotylidae)

Parasitology
The classification of the digenean genus Gogatea Lutz, 1935 has been complicated for almost a century due to morphological variability and reliance on limited diagnostic traits.
Sila Viriyautsahakul, Vachirapong Charoennitiwat, Kittipong Chaisiri, Abigail Hui En Chan, Chonlada Tippawan, Alexis Ribas, Panithi Laoungbua, Tanapong Tawan, Urusa Thaenkham, Napat Ratnarathorn   +9 more
doaj   +1 more source

Sexual shape dimorphism in the monomorphic fish Decapterus macrosoma (Teleostei: Carangidae) [PDF]

Computational Ecology and Software, 2019
Monomorphism is prevalent among fishes consequently sexually dimorphic traits are unknown. Discrimination between sexes is often achieved through direct examination of the gonads.
Kaent Immanuel N. Uba
doaj  

Size, not phylogeny, explains the morphology of the endosseous labyrinth in the crown clade Crocodylia

Journal of Anatomy, Volume 246, Issue 4, Page 558-574, April 2025.
Here, we present the most complete dataset to date on the endosseous labyrinths of extant crocodylians. Using 3D geometric morphometrics, we show that allometry constitutes a major contributor of the shape variation of the crocodylian endosseous labyrinths and that the development of this structure is likely linked to the braincase conformation, in all
Yohan Pochat‐Cottilloux, Gwendal Perrichon, Lionel Hautier, Nicolas Rinder, Romain Amiot, Irena Raselli, Jérôme Adrien, Joël Lachambre, Vincent Fernandez, Jeremy E. Martin   +9 more
wiley   +1 more source

The use of otolith morphology to indicate the stock structure of common coral trout (Plectropomus leopardus) on the Great Barrier Reef, Australia [PDF]

, 2006
We investigated the use of otolith morphology to indicate the stock structure of an exploited serranid coral reef fish, Plectropomus leopardus, on the Great Barrier Reef (GBR), Australia.
Begg, Gavin A., Bergenius, Mikaela A. J., Mapstone, Bruce D.   +2 more
core  

MorphoJ: an integrated software package for geometric morphometrics

Molecular Ecology Resources, 2011
C. Klingenberg
semanticscholar   +1 more source

Does ulnar curvature covary with locomotion and substrate use in cercopithecids?

Journal of Anatomy, EarlyView.
This study investigates ulnar curvature in cercopithecids in relation to locomotor behaviors, introducing an analysis of anteroposterior and mediolateral curvature, using geometric morphometric on 167 specimens (23 species). Although the two curvatures distinguish arboreal and terrestrial quadrupeds, their moderate covariation suggests that they ...
Nicolas Pappalardo, Laurent Pallas, Julian Karoui‐Canedo, Franck Guy, Guillaume Daver   +4 more
wiley   +1 more source

Functional morphology of trabecular bone in the calcaneus of African apes

Journal of Anatomy, EarlyView.
Pan exhibits significantly higher calcaneal tuberosity trabecular thickness (Tb.Th) and bone volume fraction (BV/TV) than Gorilla, potentially reflecting higher triceps surae forces for vertical climbing. Both taxa have significantly higher Tb.Th and BV/TV in the anterior calcaneus; the difference is exaggerated in Gorilla, potentially reflecting ...
Christine M. Harper, Biren A. Patel
wiley   +1 more source