Results 81 to 90 of about 203,887 (302)

Role of soft tissue and bone interactions in the developmental integration and modularity of the skull in neural crest‐specific gap junction alpha‐1 knockout mice

open access: yesThe Anatomical Record, EarlyView.
Abstract The vertebrate skull is composed of bones derived from neural crest cells and mesoderm. The evolutionary capacity of the skull has been linked, in part, to the emergence of neural crest cells; however, this increased capacity for evolutionary change requires that variation within neural crest‐ and mesoderm‐derived bones remains partly ...
Alyssa C. Moore   +5 more
wiley   +1 more source

c‐Rel–dependent Chk2 signaling regulates the DNA damage response limiting hepatocarcinogenesis

open access: yesHepatology, EarlyView., 2022
In response to genotoxic injury, c‐Rel upregulates ATM‐Chk2‐p53 pathway DNA damage proteins to limiting hepatocarcinogenesis. Abstract Background and Aims Hepatocellular carcinoma (HCC) is a leading cause of cancer‐related death. The NF‐κB transcription factor family subunit c‐Rel is typically protumorigenic; however, it has recently been reported as a
Jack Leslie   +17 more
wiley   +1 more source

Avian spring migration at the east Adriatic coast: coastal and sea-crossing dynamics of intensity, timing, and flight directions

open access: yesMovement Ecology
Background Each spring, migratory birds converge along the Croatian coast from various directions, creating a dynamic intersection of flight paths.
Simon Hirschhofer   +9 more
doaj   +1 more source

BIRDS AND SUSTAINABLE MANAGEMENT IN MEDITERRANEAN RIPARIAN AREAS: Bird studies in the RIPIDURABLE project [PDF]

open access: yes, 2010
RIPIDURABLE is an INTERREG IIIC European Program involving 10 partners from Portugal, Spain, France and Greece. Scientists, technicians and local/regional authorities worked together to integrate knowledge, knowhow and practice, towards a rational ...
Crochet, Pierre-André   +11 more
core  

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

Bird migration [PDF]

open access: yesJournal of Comparative Physiology A, 2017
Franz, Bairlein, Wolfgang, Wiltschko
openaire   +2 more sources

Methods of quantitative and qualitative analysis of bird migration with a tracking radar [PDF]

open access: yes
Methods of analyzing bird migration by using tracking radar are discussed. The procedure for assessing the rate of bird passage is described. Three topics are presented concerning the grouping of nocturnal migrants, the velocity of migratory flight, and ...
Bruderer, B., Steidinger, P.
core   +1 more source

Autumn Migration of Mississippi Flyway Mallards as Determined by Satellite Telemetry [PDF]

open access: yes, 2012
We used satellite telemetry to study autumn migration timing, routes, stopover duration, and final destinations of mallards Anas platyrhynchos captured the previous spring in Arkansas from 2004 to 2007.
Asante, Kwasi   +2 more
core   +1 more source

Avian Haemosporidian blood parasite infections at a migration hotspot in Eilat, Israel [PDF]

open access: yes, 2016
Haemosporidian blood parasites are frequent amongst passerines. Though they often do not cause detectable  consequences to host health, however, their presence or absence and also their prevalence across host  populations may potentially carry ...
Paperna, Ilan   +2 more
core   +3 more sources

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

open access: yesThe Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer   +2 more
wiley   +1 more source

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