Results 61 to 70 of about 13,161 (306)

Distribution of Atlantic Forest anuran communities and environmental variables.

open access: yes, 2023
Distribution of Atlantic Forest anuran communities and environmental variables.
Sandra Maria Hartz (3266070)   +2 more
core   +1 more source

A rhesus macaque model of α‐dystroglycanopathy caused by a POMT1 splice altering variant

open access: yesAnimal Models and Experimental Medicine, EarlyView.
Rhesus macaques homozygous for a naturally occurring spice altering variant in the POMT1 gene develop lissencephaly, microphthalmia, and muscular contracture. The presentation models severe presentation of the human Walker‐Warburg syndrome. Abstract Background Biallelic mutations in genes associated with α‐dystroglycan glycosylation manifest in a ...
Anya Nordlund   +7 more
wiley   +1 more source

Comparative genomics reveals insights into anuran genome size evolution

open access: yes, 2023
Background Amphibians, particularly anurans, display an enormous variation in genome size. Due to the unavailability of whole genome datasets in the past, the genomic elements and evolutionary causes of anuran genome size variation are poorly understood.
Lotanna Micah Nneji, Yan-Bo Sun, Bin Zuo
core   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

open access: yesThe Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza   +3 more
wiley   +1 more source

Regeneration in Hypophysectomized Anuran Tadpoles.

open access: yesExperimental Biology and Medicine, 1960
Summary1. A comparison was made between regenerating tail-tips in normal and hypophysectomized Rana pipiens tadpoles. 2. No significant differences were noted in amount of regeneration/unit time or in the histology of regenerates. 3. Age of the hypophysectomized animal had no discernible effect on tail-tip regeneration. 4.
M R, WRIGHT, M E, PLUMB
openaire   +2 more sources

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

open access: yesThe Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro   +7 more
wiley   +1 more source

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

open access: yesThe Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox   +8 more
wiley   +1 more source

Frog Skin Innate Immune Defences: Sensing and Surviving Pathogens

open access: yesFrontiers in Immunology, 2019
Amphibian skin is a mucosal surface in direct and continuous contact with a microbially diverse and laden aquatic and/or terrestrial environment. As such, frog skin is an important innate immune organ and first line of defence against pathogens in the ...
Joseph F. A. Varga   +2 more
doaj   +1 more source

Does chronic exposure to ammonium during the pre-metamorphic stages promote hindlimb abnormality in anuran metamorphs? A comparison between natural-habitat and agrosystem frogs

open access: yesActa Herpetologica, 2020
Despite their detrimental effects on locomotion, prevalence of hindlimb abnormalities is increasing in anuran populations worldwide. Among others, agrochemical pollution during the larval stage is a potential cause. However, populations exposed to such a
Sonia Zambrano-Fernández   +2 more
doaj   +1 more source

Global shortfalls of knowledge on anuran tadpoles

open access: yes, 2023
Despite the amount of data on different aspects of biodiversity, such as species distributions, taxonomy, or phylogenetics, there are still significant gaps and biases in the available information.
Florencia Vera Candioti   +4 more
core   +1 more source

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