Results 91 to 100 of about 96,431 (347)

The impact of climate change on the structure of Pleistocene mammoth steppe food webs

open access: yes, 2013
Species interactions shape predator-prey networks, impacting community structure and, potentially, ecological dynamics. It is likely that global climatic perturbations that occur over long periods of time have a significant impact on species interactions
Bocherens, Herve   +3 more
core   +1 more source

Undergraduate Research Journal, Volume 15 [PDF]

open access: yes, 2016
Table of Contents: The Effects of Snorkel-Based Tourism on the Behavior of Reef Fishes / by Savannah Clapp, Lauren Rowsey, and Jordan Grant (p.1-18) -- People Broken Into Pieces Trying to Join: Byzantine Erotica and the Provocative Paradox / by Kendall ...
Andrei, Anca   +11 more
core   +1 more source

Plasma extrachromosomal circular DNA as a biomarker in EGFR‐targeted therapy of non‐small cell lung cancer

open access: yesMolecular Oncology, EarlyView.
Detection of extrachromosomal circular DNA (eccDNA) in plasma samples from EGFR‐mutated non‐small cell lung cancer patients. Plasma was collected before and during treatment with the EGFR‐tyrosine kinase inhibitor osimertinib. Plasma eccDNA was detected in all cancer samples, and the presence of the EGFR gene on eccDNA serves as a potential biomarker ...
Simone Stensgaard   +5 more
wiley   +1 more source

Predation risk reduces a female preference for heterospecific males in the green swordtail [PDF]

open access: yes, 2016
The presence of a predator can result in the alteration, loss or reversal of a mating preference. Under predation risk, females often change their initial preference for conspicuous males, favouring less flashy males to reduce the risk of being detected ...
Alonzo, Suzanne H.   +2 more
core   +1 more source

Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells

open access: yesMolecular Oncology, EarlyView.
We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller   +17 more
wiley   +1 more source

The trophic strategy of the European honey‐buzzard Pernis apivorus during breeding: extravagant specialization or ingenious solution?

open access: yesJournal of Avian Biology
This article provides insight into the trophic strategy of a little‐known top predator and allows for a better understanding of the selective pressures that shape its diet. We studied the diet of European honey‐buzzards, a raptor specialized in consuming
Jorge A. Martín‐Ávila   +3 more
doaj   +1 more source

Nestling Diet of Two Sympatric Insectivorous Passerines in Different Habitats—A Metabarcoding Study

open access: yesBirds
Increasing landscape transformations and urbanisation affect insectivorous bird populations in various ways such as food availability, breeding phenology, or reproductive success.
Daniel Höhn   +5 more
doaj   +1 more source

Recurrent cancer‐associated ERBB4 mutations are transforming and confer resistance to targeted therapies

open access: yesMolecular Oncology, EarlyView.
We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala   +15 more
wiley   +1 more source

Crucial parameters for precise copy number variation detection in formalin‐fixed paraffin‐embedded solid cancer samples

open access: yesMolecular Oncology, EarlyView.
This study shows that copy number variations (CNVs) can be reliably detected in formalin‐fixed paraffin‐embedded (FFPE) solid cancer samples using ultra‐low‐pass whole‐genome sequencing, provided that key (pre)‐analytical parameters are optimized.
Hanne Goris   +10 more
wiley   +1 more source

Turbidity influences individual and group level responses to predation in guppies, Poecilia reticulata [PDF]

open access: yes, 2015
© 2015 The Association for the Study of Animal Behaviour. Increasing turbidity (either sedimentary or organic) from anthropogenic sources has significant negative impacts on aquatic fauna, both directly and indirectly by disrupting behaviour.
Kimbell, Helen S.   +2 more
core   +1 more source

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