Results 61 to 70 of about 5,950 (217)

Blood gases, biochemistry, and hematology of Galapagos green turtles (Chelonia mydas). [PDF]

open access: yesPLoS ONE, 2014
The green turtle, Chelonia mydas, is an endangered marine chelonian with a circum-global distribution. Reference blood parameter intervals have been published for some chelonian species, but baseline hematology, biochemical, and blood gas values are ...
Gregory A Lewbart   +7 more
doaj   +1 more source

Age Structure, Sexual Dimorphism, and Ontogenetic Melanism in a Captive Population of the Endangered Freshwater Turtle Mauremys reevesii (Gray 1831)

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Effectively illustrates the sexual size dimorphism in males and females of endangered Mauremys reevesii. ABSTRACT The age structure of animal populations plays a pivotal role in understanding their demographic dynamics and reproductive potential. Although carapace growth ring analysis is widely used to estimate turtle ages, environmental variability ...
Hakyung Kang   +4 more
wiley   +1 more source

Chemical Composition of the Eggs of the Freshwater Turtle Phrynops hilarii (Chelidae: Testudines) [PDF]

open access: yes, 2019
At oviposition, amniote eggs contain all the nutrients required for complete neonate tissue development. For reptiles and birds, the egg yolk is the main embryonic energy source and is composed predominantly of proteins and lipids, while also providing ...
Bernardi, Cecilia Gabriela   +3 more
core  

Pseudemys texana [PDF]

open access: yes, 1990
Number of Pages: 2Integrative BiologyGeological ...
Etchberger, Cory R., Iverson, John B.
core   +1 more source

Dog attacks on wild desert tortoises: A risk model

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
Domestic dogs attack and severely injure wild desert tortoises at the urban and ex‐urban interface with deserts. Severe trauma to tortoises increased 4 times to shell and limbs and 16.5 times to the gular horn over the decades between the 1970s and 2000s. Tortoises were at exponential risk of severe trauma when living within 12 km of settlements, towns,
Andrea S. Carlson   +2 more
wiley   +1 more source

Abundance, distribution, and habitat of leatherback turtles (Dermochelys coriacea) off California, 1990−2003 [PDF]

open access: yes, 2007
Leatherback turtles (Dermochelys coriacea) are regularly seen off the U.S. West Coast, where they forage on jellyfish (Scyphomedusae) during summer and fall. Aerial line-transect surveys were conducted in neritic waters (
Benson, Scott R.   +4 more
core  

Population dynamics, survival, and movements of Texas tortoises in a national park in southern Texas

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
Texas tortoise abundance in a small national park in South Texas, USA, declined by >25%, from an estimated 273 tortoises in 2014 to 204 tortoises in 2024. The severity of the decline varied across survey units, but abundance remained highest in areas having greater canopy cover and experiencing less invasion by Guinea grass.
Tracey D. Tuberville   +4 more
wiley   +1 more source

Pathogenic, Molecular, and Immunological Properties of a Virus Associated with Sea Turtle Fibropapillomatosis. Phase II : Viral Pathogenesis and Development of Diagnostic Assays [PDF]

open access: yes, 2000
Research conducted under this RWO from July 1, 1997 through June 30, 2000 has provided important new information about the pathogenesis, virology, and immunology of marine turtle fibropapillomatosis. In particular, we have provided strong evidence for
Bjorndal, Karen A.   +8 more
core  

Hatching Strategies in Monogenean (Platyhelminth) Parasites that Facilitate Host Infection [PDF]

open access: yes, 2011
In parasites, environmental cues may influence hatching of eggs and enhance the success of infections. The two major endoparasitic groups of parasitic platyhelminths, cestodes (tapeworms) and digeneans (flukes), typically have high fecundity, infect more
Armstrong   +13 more
core   +1 more source

A possible chelonian egg from the Brazilian late cretaceous

open access: yesAnais da Academia Brasileira de Ciências, 2000
This paper describes a possible fossil egg proceeding from the Bauru Group, Late Cretaceous of Paraná Basin, Brazil. External morphology, dimensions, texture and shell ornamentation examined under electron microscopy show close resemblance to the Recent ...
AZEVEDO SERGIO ALEX   +2 more
doaj  

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