Results 51 to 60 of about 722 (199)

Host species and age‐specific variation on Hepatozoon prevalence and its effect on body condition in two Neotropical crocodiles

Wildlife Biology, Volume 2025, Issue 5, September 2025.
Many populations of species belonging to the order Crocodilia are threatened due to illegal trafficking, indiscriminate hunting, and habitat loss and degradation affecting crocodilian health and parasitic load. Although several studies have revealed that crocodiles, caimans, and alligators are frequently infected by Hepatozoon spp., the results from ...
Alfonso Marzal, Wendy Flores‐Saavedra, Sergio Magallanes, Jaime Muriel, Jefferson Lezama‐Briceño, Luis Alberto García‐Ayachi, Esteban Fong, Carlos Mora‐Rubio, Carlos Mendoza, Blanca Saldaña, Alazne Díez‐Fernández, José Martin, Carlos Marcial Perea‐Sicchar, Manuel González‐Blázquez   +13 more
wiley   +1 more source

Saurocoría en cocodrilos no favorece la dispersión y viabilidad de semillas

Acta Biológica Colombiana, 2021
La dispersión de semillas por reptiles (saurocoría) ha recibido atención recientemente y se ha reportado el consumo de frutos y semillas en cocodrilianos, actuando como potenciales dispersores de semillas.
Mariana González Solórzano, Monserrat Araceli Gómez Torres, Marco Antonio López Luna, Armando Hiram Escobedo Galván   +3 more
doaj   +1 more source

Anotaciones sobre el crecimiento en cautiverio de crías y juveniles de cocodrilo de río (Crocodylus acutus)

REVISTA BIOMÉDICA, 2002
Se reportan cinco casos clínicos observados en ejemplares juveniles de cocodrilo de río, Crocodylus acutus, en cautiverio dentro de las instalaciones de la Unidad para la Conservación, Manejo y Aprovechamiento Sustentable de la Vida Silvestre (UMA) “Reptilario Cipactli” (clave INE/ CITES/DGVS-CR-IN-0610-JAL./00) dependiente del Centro Universitario de ...
Fabio Germán Cupul‐Magaña, Pablo Simitrius Hernández-Hurtado, Bartolo Cruz-Romero, Armando Rubio-Delgado   +3 more
openalex   +4 more sources

The Foe You Know: Observations of Interspecific Interactions Between Small Cetaceans and Northern Resident Killer Whales (Orcinus orca) in the Northeast Pacific

Ecology and Evolution, Volume 15, Issue 6, June 2025.
This study presents the first aerial observations and the most detailed accounts to date of interspecific interactions between northern resident killer whales and two small cetacean species, Dall's porpoises and Pacific white‐sided dolphins, off northeastern Vancouver Island, BC, Canada from 2018 to 2021.
Brittany C. Visona‐Kelly, Lance G. Barrett‐Lennard   +1 more
wiley   +1 more source

Manejo de cocodrilos (Crocodylus acutus) en estanques de cultivo de tilapia en Cañas, Guanacaste

Ciencias Ambientales, 2012
En la cuenca baja del Tempisque se han incrementado los avistamientos de cocodrilos (Crocodylus acutus) en cuerpos de agua naturales y artificiales. Este trabajo describe un plan implementado para operacionalizar el control de cocodrilos en estanques ...
Juan Rafael Bolaños
doaj   +1 more source

Closing the air gap: the use of drones for studying wildlife ecophysiology

Biological Reviews, Volume 100, Issue 3, Page 1206-1228, June 2025.
ABSTRACT Techniques for non‐invasive sampling of ecophysiological data in wild animals have been developed in response to challenges associated with studying captive animals or using invasive methods. Of these, drones, also known as Unoccupied Aerial Vehicles (UAVs), and their associated sensors, have emerged as a promising tool in the ecophysiology ...
Adam Yaney‐Keller, Rebecca R. McIntosh, Rohan H. Clarke, Richard D. Reina   +3 more
wiley   +1 more source

A Terrestrial Thermometer Using Carbonate Clumped Isotopes From Gar Scales

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 2, February 2025.
Abstract We present a new clumped isotope calibration relating temperature to the Δ47 composition of the bioapatite scales of gar fish (Lepisosteidae family). Modern gars live at <∼3 m depth in rivers and lakes, are non‐migratory, and their scales grow continuously over their lifespan (∼8–14 years).
Katelyn E. Gray, Mark T. Brandon
wiley   +1 more source

Neuroanatomy and pneumaticity of the extinct Malagasy “horned” crocodile Voay robustus and its implications for crocodylid phylogeny and palaeoecology

The Anatomical Record, Volume 307, Issue 8, Page 2749-2786, August 2024.
Abstract Voay robustus, the extinct Malagasy “horned” crocodile, was originally considered to be the only crocodylian representative in Madagascar during most part of the Holocene. However, Malagasy crocodylian remains have had confused taxonomic attributions and recent studies have underlined that Crocodylus and Voay populations coexisted on the ...
Gwendal Perrichon, Yohan Pochat‐Cottilloux, Davide Conedera, Pascale Richardin, Vincent Fernandez, Lionel Hautier, Jeremy E. Martin   +6 more
wiley   +1 more source

Determinación morfológica y molecular de larvas del tercer estadio larvario (L3A) de Gnathostoma binucleatum (Nematoda: Gnathostomatidae) del estado de Colima, México

Revista Mexicana de Biodiversidad, 2009
Como parte de un proyecto para definir la distribución actual de las especies de Gnathostoma en México, examinamos 22 especies de vertebrados en el estado de Colima en busca de este nematodo.
Luis Jorge García-Márquez, Rafael Lamothe-Argumedo, David Osorio-Sarabia, Luis García-Prieto, Virginia León Règagnon   +4 more
doaj   +1 more source

Freshwater megafauna shape ecosystems and facilitate restoration

Biological Reviews, Volume 99, Issue 4, Page 1141-1163, August 2024.
ABSTRACT Freshwater megafauna, such as sturgeons, giant catfishes, river dolphins, hippopotami, crocodylians, large turtles, and giant salamanders, have experienced severe population declines and range contractions worldwide. Although there is an increasing number of studies investigating the causes of megafauna losses in fresh waters, little attention
Fengzhi He, Jens‐Christian Svenning, Xing Chen, Klement Tockner, Tobias Kuemmerle, Elizabeth le Roux, Marcos Moleón, Jörn Gessner, Sonja C. Jähnig   +8 more
wiley   +1 more source