Results 71 to 80 of about 26,514 (296)

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

Within-Host Dynamics of Multi-Species Infections:Facilitation, Competition and Virulence [PDF]

, 2012
Host individuals are often infected with more than one parasite species (parasites defined broadly, to include viruses and bacteria). Yet, research in infection biology is dominated by studies on single-parasite infections.
Eswarappa, Sandeepa M., Sylvie Estrela, Sam P Brown, Sylvie Estrela (156401), Estrela, Sylvie, Sam P. Brown (30600), Brown, Sam P., Sandeepa M Eswarappa, Sandeepa M. Eswarappa (156396)   +8 more
core   +1 more source

Apparent competition through facilitation between Melanoides tuberculata and Biomphalaria glabrata and the control of schistosomiasis

Memorias do Instituto Oswaldo Cruz, 2003
Interactions between two species that result in reduced growth rates for both and extinction of one of the species are generally considered cases of asymmetric interspecific competition.
Giovanelli Alexandre, Vieira Marcus Vinicius, Silva Cesar Luiz Pinto Ayres Coelho da   +2 more
doaj  

Competition for nitrogen between Fagus sylvatica and Acer pseudoplatanus seedlings depends on soil nitrogen availability

Frontiers in Plant Science, 2015
Competition for nitrogen (N), particularly in resource-limited habitats, might be avoided by different N acquisition strategies of plants. In our study, we investigated whether slow-growing European beech and fast-growing sycamore maple seedlings avoid ...
Xiuyuan eLi, Heinz eRennenberg, Judy eSimon   +2 more
doaj   +1 more source

Tracing the evolutionary history of the morpho‐anatomy of baculum in primates

The Anatomical Record, EarlyView.
Abstract Animal morphology reflects both evolutionary history and present‐day adaptation. Male mammal copulatory structures such as the baculum (penile bone) are ideal for studying these processes because of their complexity and high interspecific variability. In primates, however, research has focused mostly on baculum length.
Federica Spani, Maria Pia Morigi, Matteo Bettuzzi, Monica Carosi   +3 more
wiley   +1 more source

Changes in locusts diversity, niche and interspecific association at different altitudes in the Ili River basin of China

Ecological Indicators
Species diversity at different altitudes exhibits different variation patterns. In alpine ecosystems, species migration from low to high altitudes has changed the intensity of interspecific competition and association, inevitably adjusting or changing ...
Xingmin Song, Mengjia Wang, Chuanen Li, Roman Jashenko, Zhujun Cao, Huixia Liu, Rong Ji   +6 more
doaj   +1 more source

Drivers of tail evolution in squamates and their implications for the fossorial origin of snakes

The Anatomical Record, EarlyView.
Abstract The axial skeleton serves as the primary structural support in all vertebrates and is subdivided into five distinct regions: cervical, thoracic, lumbar, sacral, and caudal. Relaxation of constraints acting on the terminal end of the axial skeleton has led to remarkable variation in caudal vertebrae number across Squamata.
Olivia Binfield, Marco Camaiti, Lucy Roberts   +2 more
wiley   +1 more source

Predators induce interspecific herbivore competition for food in refuge space [PDF]

, 1997
Resource competition among herbivorous arthropods has long been viewed as unimportant because herbivore populations are controlled by predators. Although recently resurrected as an organizing force in arthropod communities on plants, there is still ...
Sabelis, M.W., Janssen, A., Pallini, A.
core   +1 more source

Productivity and tolerance reveal the shift from competition to facilitation among multiple species under multiple stressors

Ecological Indicators
Interspecific competition and facilitation play essential roles in community structure and have been widely demonstrated between pairwise species.
Shuhan Li, Man Qi, Haiying Lin, Qianzhao Sun, Wei Yang, Tao Sun   +5 more
doaj   +1 more source

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke, A. I. Oni, O. A. Akosile, K. M. Oliyide, C. A. Ishola, M. O. Logunleko, O. A. Jimoh, C. P. Njoku, L. O. Fasasi, V. A. Uyanga   +9 more
wiley   +1 more source