Results 31 to 40 of about 29,436 (338)

Digital dissection of the model organism Xenopus laevis using contrast-enhanced computed tomography [PDF]

open access: yes, 2017
The African clawed frog, Xenopus laevis, is one of the most widely used model organisms in biological research. However, the most recent anatomical description of X. laevis was produced nearly a century ago.
Ahn   +62 more
core   +2 more sources

Photoperiod effects in a freshwater community: Amphibian larvae develop faster and zooplankton abundance increases under an early‐season photoperiod

open access: yesEcology and Evolution, 2023
Organisms that shift their phenologies in response to global warming will experience novel photic environments, as photoperiod (daylength) continues to follow the same annual cycle.
Troy C. Neptune, Michael F. Benard
doaj   +1 more source

Tree cover and habitat type mediate taxonomic and phylogenetic anuran diversity in Southeastern Peru

open access: yesGlobal Ecology and Conservation
Understanding the drivers that shape anuran diversity is crucial for identifying conservation hotspots, particularly as global anuran declines threaten the reduction of their ecosystem functions across food chains.
I Chou   +5 more
doaj   +1 more source

Probabilistic Clustering Using Maximal Matrix Norm Couplings

open access: yes, 2018
In this paper, we present a local information theoretic approach to explicitly learn probabilistic clustering of a discrete random variable. Our formulation yields a convex maximization problem for which it is NP-hard to find the global optimum. In order
Makur, Anuran   +2 more
core   +1 more source

Eleutherodactylus martinicensis [PDF]

open access: yes, 1994
Number of Pages: 4Integrative BiologyGeological ...
Hardy, Jerry D., Jr., Kaiser, Hinrich
core   +1 more source

Factor in Fear: Interference Competition in Polymorphic Spadefoot Toad Tadpoles and Its Potential Role in Disruptive Selection

open access: yesAnimals, 2023
Disruptive selection arises when extreme phenotypes have a fitness advantage compared to more-intermediate phenotypes. Theory and evidence suggest that intraspecific resource competition is a key driver of disruptive selection. However, while competition
Alexandru Strugariu, Ryan Andrew Martin
doaj   +1 more source

Amphibian chytridiomycosis : a review with focus on fungus-host interactions [PDF]

open access: yes, 2015
Amphibian declines and extinctions are emblematic for the current sixth mass extinction event. Infectious drivers of these declines include the recently emerged fungal pathogens Batrachochytrium dendrobatidis and Batrachochytrium salamandrivorans ...
Haesebrouck, Freddy   +3 more
core   +4 more sources

What the largest tadpole feeds on? A detailed analysis of the diet composition of Pseudis minuta tadpoles (Hylidae, Dendropsophini)

open access: yesAnais da Academia Brasileira de Ciências, 2016
We analyzed the diet of 25 individuals of Pseudis minuta tadpoles which consisted in debris with more than 30%, follow by diatoms, euglenids, green algae, and desmids. With regard to the feeding strategy, P. minuta tadpoles are generalist consumer.
SÔNIA HUCKEMBECK   +3 more
doaj   +1 more source

The island rule in the Brazilian frog Phyllodytes luteolus (Anura: Hylidae): incipient gigantism?

open access: yesZoologia (Curitiba), 2015
The island rule suggests that, when mainland animals are isolated on islands, large animals tend to become smaller, while small animals tend to become larger.
Marcio Mageski   +5 more
doaj   +1 more source

Pathogenic fungus in feral populations of the invasive North American bullfrog in Argentina [PDF]

open access: yes, 2017
Nearly a third (32.4%) of the world?s amphibian species are either threatened with extinction or already extinct (1). The chytrid fungus Batrachochytrium dendrobatidis (Bd) (Chytridiomycetes: Ryzophydiales) (2) has been recognized as responsible for mass
Ghirardi, Romina   +4 more
core   +1 more source

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