Results 61 to 70 of about 76,527 (199)

The use of clamping grips and friction pads by tree frogs for climbing curved surfaces [PDF]

open access: yes, 2017
Most studies on the adhesive mechanisms of climbing animals have addressed attachment against flat surfaces, yet many animals can climb highly curved surfaces, like twigs and small branches.
Barnes, W. Jon P.   +7 more
core   +2 more sources

Road mortality alters the body size and age structure of amphibians

open access: yesOikos, EarlyView.
Road mortality affects a wide range of animal species, including amphibians. Worldwide, many amphibian species, including the Asiatic toad Bufo gargarizans, are impacted by road mortality, but the ecological consequences remain poorly understood. This study aimed to evaluate how road mortality influences population traits by comparing body sizes and ...
Seung‐Min Park   +6 more
wiley   +1 more source

A new family of diverse skin peptides from the microhylid frog genus phrynomantis [PDF]

open access: yes, 2020
A wide range of frogs produce skin poisons composed of bioactive peptides for defence against pathogens, parasites and predators. While several frog families have been thoroughly screened for skin-secreted peptides, others, like the Microhylidae, have ...
Ballet, Steven   +7 more
core   +1 more source

Interplanetary frontiers: terraforming from an invasion science perspective

open access: yesOikos, EarlyView.
The pursuit of a multi‐planetary existence represents one of humanity's greatest frontiers. If applied justly, it offers an opportunity to extend its civilization's lifespan amid escalating sustainability crises on Earth. One approach increasingly gaining traction is terraforming, a hitherto theoretical ecological and evolutionary experiment revolving ...
Teun Everts   +2 more
wiley   +1 more source

A physiological measure of shifting connections in the Rana pipiens retinotectal system [PDF]

open access: yes, 1986
The retinotectal connections of developing Rana tadpoles and froglets have been studied using light-pipe techniques to directly assay the pattern of the projection from the retina to the tectum.
Fraser, Scott E., Hunt, R. Kevin
core  

Cross‐Linking Mass Spectrometry of the Antimicrobial Peptides Magainin 2 and PGLa Reveals Heterodimerization in Micellar Medium

open access: yesRapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale In this study, we applied cross‐linking mass spectrometry (XL‐MS) to characterize the oligomeric states of a PGLa/magainin 2 mixture and gain insight into the heterodimerization previously suggested in the literature. Both peptides have shown a synergistic enhancement of activity when tested in antimicrobial assays; however, the ...
Emilie Hirschler   +7 more
wiley   +1 more source

Causes of embryonic mortality in Espadarana prosoblepon (Anura: Centrolenidae) from Costa Rica

open access: yesPhyllomedusa: Journal of Herpetology, 2020
Causes of embryonic mortality in Espadarana prosoblepon (Anura: Centrolenidae) from Costa Rica. Members of the family Centrolenidae—commonly known as “glass frogs”—exhibit arboreal egg-laying behavior, depositing their clutches on riparian vegetation ...
Johana Goyes Vallejos   +1 more
doaj  

UV soliton dynamics and Raman-enhanced supercontinuum generation in photonic crystal fiber

open access: yes, 2018
Ultrafast broadband ultraviolet radiation is of importance in spectroscopy and photochemistry, since high photon energies enable single-photon excitations and ultrashort pulses allow time-resolved studies. Here we report the use of gas-filled hollow-core
Ermolov, Alexey   +4 more
core   +1 more source

The oscillatory response of the electroretinogram and neuronal adaptation

open access: yesActa Ophthalmologica, EarlyView.
Abstract After more than 50 years, there still remains a challenge and an interest to know more as well as extend and deepen our understanding of the small rapid wavelets, the oscillatory potentials (OPs), of the electroretinogram (ERG) and the neuronal adaptation of the retina.
Lillemor Wachtmeister, Anders Eklund
wiley   +1 more source

Observations on metamorphosing tadpoles of Hyalinobatrachium orientale (Anura: Centrolenidae)

open access: yesPhyllomedusa: Journal of Herpetology, 2020
Observations on metamorphosing tadpoles of Hyalinobatrachium orientale (Anura: Centrolenidae). Metamorphosis, when anuran amphibians resorb their tails and remodel their mouthparts and internal organs, is a vulnerable stage in the frog’s life history. As
Isabel Byrne   +4 more
doaj  

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