Now showing items 1-10 of 22
Was the tail bud the ancestral centre where the fin developmental program evolved in chordates?
(Naturalis Biodiversity Center, 2015)
The structural origin of the vertebrates' paired limbs is still an unsolved problem. Historically, two hypotheses have been raised to explain the origin of vertebrate limbs: the Archipterygium Hypothesis and the Fin Fold ...
Estudios cariológicos de cinco especies de serpientes costarricenses de la familia colubridae
The karyotypes of five species of colubrid snakes from Costa Rica are as follows: Imuntodes cenchao and Drymobius margaritiferus have a diploid number of 36, with 16 macro- and 20 microchromosomes. The fourth pair is ...
Venom Composition and Diet of the Cantil Agkistrodon bilineatus howardgloydi (Serpentes: Viperidae)
The southernmost subspecies of the cantil, Agkistrodon bilineatus howardgloydi, occurs in almost all terrestrial habitats of the sector Santa Rosa National Park, in Guanacaste Conservation Area, Costa Rica. We obtained 21 ...
AN UNAUTHORIZED BIOGRAPHY OF THE SECOND HEART FIELD AND A PIONEER/SCAFFOLD MODEL FOR CARDIAC DEVELOPMENT
(ElsevierSan Diego, 2012)
RJLs: a new family of Ras-related GTP binding proteins
The Ras superfamily of GTP binding proteins encompasses several gene families that regulate a plethora of events in the eukaryotic cell. Here we describe a novel branch of this superfamily which we have named RJLs. These ...
Dact Genes Are Chordate Specific Regulators At The Intersection Of Wnt And Tgf-β Signaling Pathways
(BioMed Central Ltd., 2014)
Structural shifts of aldehyde dehydrogenase enzymes were instrumental for the early evolution of retinoid-dependent axial patterning in metazoans
(NATL ACAD SCIENCES, 2011)
Aldehyde dehydrogenases (ALDHs) catabolize toxic aldehydes and process the vitamin A-derived retinaldehyde into retinoic acid (RA), a small diffusible molecule and a pivotal chordate morphogen. In this study, we combine ...
Feeding ecology of the green turtle Chelonia mydas in northern Peru
(Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso, 2017)
Diet and food preferences of the green turtle Chelonia mydas were analyzed based on digestive tract contents of dead specimens caught incidentally by an artisanal gillnet fishery in Sechura Bay, northern Peru. We examined ...
Genomics and the Making of Yeast Biodiversity
(Current Biology Ltd, 2015-11)
Yeasts are unicellular fungi that do not form fruiting bodies.Although the yeast lifestyle has evolved multiple times, mostknown species belong to the subphylum Saccharomycotina(syn. Hemiascomycota, hereafter yeasts). This ...