Results 41 to 50 of about 20,780 (220)

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

open access: yesThe Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga   +4 more
wiley   +1 more source

Molecular bases of insect odorant receptor function: specificity and evolution

open access: yesBiological Reviews, EarlyView.
ABSTRACT Insect odorant receptors (ORs) are a class of chemoreceptors that insects use to detect volatile cues in their environment. In recent years, major advances in the field of structural biology have made it possible to obtain the first structures of insect ORs.
Zibo Li   +5 more
wiley   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Notes on amphipods associated with loggerhead marine turtle Caretta caretta (Linnaeus, 1758) in south-eastern Brazil

open access: yesNauplius, 2020
The loggerhead marine turtle is an ideal substrate for epibionts and presents the highest diversity of associated fauna among marine turtles. Here we report the occurrence of two amphipod species, Caprella andreae Mayer, 1890 and Podocerus chelonophilus (
Tammy Iwasa-Arai   +3 more
doaj   +1 more source

Massive consumption of gelatinous plankton by Mediterranean apex predators. [PDF]

open access: yesPLoS ONE, 2012
Stable isotopes of carbon and nitrogen were used to test the hypothesis that stomach content analysis has systematically overlooked the consumption of gelatinous zooplankton by pelagic mesopredators and apex predators.
Luis Cardona   +3 more
doaj   +1 more source

Loggerhead turtle (Caretta caretta) nest predation at Cape Range National Park [PDF]

open access: yes, 2008
Most of the existing sea turtle populations worldwide are in decline. In particular, loggerhead turtles (Caretta caretta) are listed as endangered and loggerhead nesting populations in Eastern Australia have declined by 86% since the 1970s.
Bradley, J.S.   +4 more
core   +1 more source

A comprehensive embryonic staging series of the turtle Trachemys scripta

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Turtles hold a unique place in vertebrate evolutionary history, making them critical assets in embryology research. Yet, they remain understudied as potential model organisms in the field. Here, to support experimental manipulations with turtle embryos, we have created a complete normal table of development for comprehensive ...
Christina M. Noravian   +6 more
wiley   +1 more source

CARACTERIZACIÓN MOLECULAR DE LA REGIÓN NO CODIFICADORA DEL DNA MITOCÓNDRICO EN Caretta caretta Y Chelonia mydas DEL SUROESTE DE CUBA: UNA PERSPECTIVA REGIONAL.

open access: yesRevista de Investigaciones Marinas, 2023
En la región no codificadora (RNC) del DNA mitocóndrico (mtDNA) se ha informado la razón de substitución intragénica más rápida de la molécula. En este trabajo, caracterizamos las secuencias de la mitad 5’ de la RNC de los haplotipos identificados en ...
Ariel Ruiz U.   +9 more
doaj  

Serum biochemistry profile determination for wild loggerhead sea turtles nesting in Campos dos Goytacazes, Rio de Janeiro, Brazil Determinação do perfil bioquímico sérico de tartarugas marinhas de vida livre da espécie em nidação em Campos dos Goytacazes, Rio de Janeiro, Brasil

open access: yesCiência Rural, 2011
Sea turtles are threatened to the point of extinction. The major goal of rehabilitating sick individuals is to eventually reintroduce them back into their habitat.
Daphne Wrobel Goldberg   +4 more
doaj   +1 more source

Evolutionary conservation of a regulative pathway of erythropoiesis in Poikilothermic vertebrates

open access: yesScientific Reports, 2022
Apoptosis, programmed cell death, plays a central role in haematopoiesis. Mature erythrocytes of non-mammalian vertebrates maintain a permanent nucleus; these cells can undergo apoptosis (eryptosis), as do other somatic cells of a given non-mammalian ...
Rosa Manca   +6 more
doaj   +1 more source

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