Results 101 to 110 of about 5,209 (201)
Egg retention (ER) and intrauterine embryonic development (IED) have been considered intermediate steps in the evolution from oviparity to viviparity. Sceloporus aeneus is an oviparous lizard that is closely related to the viviparous species (Sceloporus ...
Rodolfo García-Collazo +4 more
doaj +1 more source
Changes in body composition and fatty acid profile during embryogenesis of quillback rockfish (Sebastes maliger) [PDF]
We investigated developmental changes in the body compositions and fatty acid (FA) profiles of embryos and preparturition larvae of the quillback rockfish (Sebastes maliger).
Rodgveller, Cara A., Sewall, Fletcher F.
core
How conflict shapes evolution in poeciliid fishes
The viviparity driven conflict hypothesis predicts the evolution of the placenta will suppress the evolution of traits associated with pre-copulatory mate choice and accelerate speciation rate. Furness et al.
Andrew I. Furness +4 more
doaj +1 more source
In the course of cytogenetic studies on Alegoria castelnaui Fleutiaux & Sallé 1889 (Coleoptera: Tenebrionidae: Tenebrioninae: Ulomini) from Guadeloupe, a number of adult specimens were dissected.
Anne Marie DUTRILLAUX +2 more
doaj +1 more source
Evolutionary transitions from egg laying (oviparity) to live birth (viviparity) are common across various taxa. Many species also exhibit genetic variation in egg-laying mode or display an intermediate mode with laid eggs containing embryos at various ...
Laure Mignerot +6 more
doaj +1 more source
Observations on the developmental stages of the smooth dogfish, Eridacnis radcliffei Smith from Gulf of Mannar. [PDF]
The structure of mature reproductive organs of fifteien adult females of Eridacn'.s radcliffei. ranging in total length from 150 to 218 mm collected from the trawl catches off Mandapam in Gulf of Mannar during February, 1972 at a depth ranging frori ...
Appukuttan, K K, Nair, R V
core
Sílidos (Syllidae: Polychaeta) del Parque Nacional de Coiba (Pacífico, Panamá)
Durante un estudio sobre la fauna marina del Parque Nacional de Coiba (Panamá) se identificaron 281 ejemplares de sílidos (Annelida: Polychaeta) intersticiales pertenecientes a 19 especies. Dos son nuevas citas para el Pacífico, Exogone (Exogone) arenosa
María Teresa Aguado
doaj
Evolutionary analysis of the genomic region of FOXP3 in vertebrates [PDF]
The Human FOXP3 gene plays a role in immunosuppression, which includes the suppression of the maternal immune system to allow the growth of a semi-foreign fetus inside her uterus.
Guffey, Ethan G.
core +1 more source
Genomic Signatures Associated with Transitions to Viviparity in Cyprinodontiformes. [PDF]
Yusuf LH +4 more
europepmc +1 more source

