Results 71 to 80 of about 5,053 (221)

Reproductive Traits of Zoo‐Bred and Wild‐Bred Eastern Massasaugas (Sistrurus catenatus) at Species Survival Plan® Conservation Breeding Centres and Other Facilities

open access: yesZoo Biology, Volume 44, Issue 6, Page 572-588, November/December 2025.
Based on 94 Massasauga litters born in human care, mean litter size and number of live young per litter were higher in wild‐bred than in zoo‐bred litters. Wild‐bred litters more often contained live young than did zoo‐bred litters. In zoo‐bred litters, dam mass was positively associated with above‐average reproductive output.
Jonathan D. Choquette   +5 more
wiley   +1 more source

Morphology of the snake spectacle reflects its evolutionary adaptation and development

open access: yesBMC Veterinary Research, 2017
Background Covering the eye of all snakes is a transparent integumental structure known as the spectacle. In order to determine variations in spectacle thickness among species, the spectacles of 217 alcohol-preserved museum specimens of 44 species ...
Mari-Ann Otkjaer Da Silva   +5 more
doaj   +1 more source

Unveiling the Evolutionary History of European Vipers and Their Venoms From a Multi‐Omic Approach

open access: yesMolecular Ecology, Volume 34, Issue 21, November 2025.
ABSTRACT Snake genomes attract significant attention from multiple disciplines, including medicine, drug bioprospection, and evolutionary biology. However, genomic research within the Viperidae family has mostly focused on the subfamily Crotalinae, while the true vipers (Viperinae) have largely been overlooked.
Adrián Talavera   +15 more
wiley   +1 more source

Unmasking the Desert Phantom: Genetic Evidence Does Not Support the Validity of the Enigmatic Boehme's Horned Viper

open access: yesZoologica Scripta, Volume 54, Issue 6, Page 817-822, November 2025.
ABSTRACT The viperid genus Cerastes contains four desert‐adapted species distributed throughout the Saharo‐Arabian arid belt that are typically associated with loose sands. Cerastes boehmei is restricted to one locality in Tunisia and is known only from the holotype.
Vojtěch Waldhauser   +8 more
wiley   +1 more source

Exceptional Visual‐Opsin Coexpression and Phenotypic Diversity in Outer‐Retinal Photoreceptors of Caenophidian Snakes

open access: yesJournal of Comparative Neurology, Volume 533, Issue 10, October 2025.
In snakes, profound differences in retinal architecture are observed between diurnal and nocturnal species. Additionally, in the rod‐dominated retinas of nocturnal snakes, coexpression of the cone opsins SWS1 and LWS in individual cones is common, while rhodopsin (RH1) is restricted to typical rods.
Einat Hauzman   +13 more
wiley   +1 more source

The Influence of Diet on the Composition and Function of Gut Microbiota in Four Snake Species

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
The results of this study provide comprehensive data to differentiate the gut microbiota composition structures among four snake species with distinct dietary preferences, explore their potential functions, and identify possible correlations between gut microbial composition and diet.
Huina Song   +10 more
wiley   +1 more source

Differential procoagulant effects of saw-scaled viper (Serpentes: Viperidae: Echis) snake venoms on human plasma and the narrow taxonomic ranges of antivenom efficacies.

open access: yesToxicology Letters, 2017
Saw-scaled vipers (genus Echis) are one of the leading causes of snakebite morbidity and mortality in parts of Sub-Saharan Africa, the Middle East, and vast regions of Asia, constituting a public health burden exceeding that of almost any other snake ...
Aymeric Rogalski   +15 more
semanticscholar   +1 more source

Crotalus intermedius (VIPERIDAE)

open access: yesRevista Latinoamericana de Herpetología
Presentamos dos nuevos registros municipales de Crotalus interemdius en el estado de ...
Rafael Canales Pérez   +2 more
openaire   +1 more source

Sequence Divergence in Venom Genes Within and Between Montane Pitviper (Viperidae: Crotalinae: Cerrophidion) Species is Driven by Mutation–Drift Equilibrium

open access: yesJournal of Molecular Evolution, 2023
R. Rosales-García   +16 more
semanticscholar   +1 more source

Bacterial Infections Associated with Viperidae Snakebites in Children: A 14-Year Experience at the Hospital Nacional de Niños de Costa Rica†.

open access: yesAmerican Journal of Tropical Medicine and Hygiene, 2019
Secondary bacterial infections following Viperidae snakebite envenomation in children are common. Among 75 patients admitted because of snakebites at the only pediatric hospital in Costa Rica, 16 (21.3%) had a culture-confirmed secondary bacterial ...
H. Brenes-Chacon   +5 more
semanticscholar   +1 more source

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