Results 121 to 130 of about 13,136,359 (338)

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

The Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

The Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo, Júlio César Costa de Souza, Angele Martins   +2 more
wiley   +1 more source

Intraspecific variation in Janzen–Connell effect is mediated by stress and plant–soil feedbacks

Ecology and Evolution
Janzen–Connell (JC) effects, hypothesized to be partially driven by negative plant–soil feedbacks (PSFs), are considered to be a key mechanism that regulates tropical forest plant diversity and coexistence.
Libing Pan, J. Aaron Hogan, Xiaoyang Song, Wenfu Zhang, Huaze Zhou, Zhonglin Chen, Jie Yang, Min Cao   +7 more
doaj   +1 more source

Genetic sorting of subordinate species in grassland modulated by intraspecific variation in dominant species.

PLoS ONE, 2014
Genetic variation in a single species can have predictable and heritable effects on associated communities and ecosystem processes, however little is known about how genetic variation of a dominant species affects plant community assembly.
Danny J Gustafson, Charles Major, Dewitt Jones, John Synovec, Sara G Baer, David J Gibson   +5 more
doaj   +1 more source

Intraspecific variability of leaf form and function across habitat types.

Ecology Letters
Trait-based ecology has already revealed main independent axes of trait variation defining trait spaces that summarize plant adaptive strategies, but often ignoring intraspecific trait variability (ITV).
G. Puglielli, Alessandro Bricca, S. Chelli, F. Petruzzellis, A. T. Acosta, G. Bacaro, E. Beccari, Liliana Bernardo, G. Bonari, R. Bolpagni, F. Boscutti, G. Calvia, G. Campetella, L. Cancellieri, R. Canullo, M. Carbognani, M. Carboni, M. Carranza, M. B. Castellani, D. Ciccarelli, Andrea Coppi, M. Cutini, Alice Dalla Vecchia, M. Dalle Fratte, M. C. de Francesco, P. De Frenne, Michele De Sanctis, L. de Simone, V. di Cecco, G. Fanelli, Emanuele Farris, A. Ferrara, G. Fenu, G. Filibeck, C. Gasperini, D. Gargano, Elisabeth Kindermann, G. La Bella, L. Lastrucci, L. Lazzaro, S. Maccherini, M. Marignani, Michele Mugnai, L. Naselli-Flores, N. Passalacqua, Nicola Pavanetto, A. Petraglia, Francesco Rota, L. A. Santoianni, A. Schettino, F. Selvi, A. Stanisci, G. Trotta, P. Vangansbeke, Marco Varricchione, M. Vuerich, Camilla Wellstein, E. Tordoni   +57 more
semanticscholar   +1 more source

Interspecific and intraspecific perspectives of the Janzen-Connell effect: Incorporating phylogenetic and molecular evolutionary approaches

, 2023
Janzen-Connell effect draagt bij aan genetische en fylogenetische diversiteit Het proefschrift van Xubing Liu geeft een beter begrip van de Janzen-Connellhypothese. Hij beargumenteert dat het Janzen-Connelleffect niet alleen bijdraagt aan het behoud van soortendiversiteit, maar ook van genetische en fylogenetische diversiteit.Honderden studies hebben ...
openaire   +1 more source

Early stages of tooth development in the harbor porpoise Phocoena phocoena

The Anatomical Record, EarlyView.
Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes, Lennart Müller‐Thomsen, Stefan Huggenberger   +2 more
wiley   +1 more source

Effectiveness of Intraspecific and Interspecific Matings in Drosophila pseudoobscura and Drosophila persimilis

The American Naturalist, 1947
Uploaded by Plazi for TaxoDros. We do not have abstracts.
openaire   +2 more sources

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

Stability of the Darwinian Dynamics: Effect of Intraspecific Competition and Human Intervention

Dynamic Games and Applications
Abstract We analyze the stability of a game-theoretic model of a polymorphic eco-evolutionary system in the presence of human intervention. The goal is to understand how the intensity of this human intervention and competition within the system impact its stability, with cancer treatment as a case study.
Mohammad Reza Satouri, Jafar Rezaei 0001, Katerina Stanková   +2 more
openaire   +2 more sources