Results 71 to 80 of about 1,879 (181)

Evidence for cell turnover as the mechanism responsible for the transport of embryos towards the vagina in viviparous onychophorans (velvet worms)

open access: yesFrontiers in Zoology, 2019
Background Onychophorans, commonly known as velvet worms, display a remarkable diversity of reproductive strategies including oviparity, and placentotrophic, lecithotrophic, matrotrophic or combined lecithotrophic/matrotrophic viviparity.
Sandra Treffkorn   +2 more
doaj   +1 more source

Observations on the developmental stages of the smooth dogfish, Eridacnis radcliffei Smith from Gulf of Mannar. [PDF]

open access: yes, 1974
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  

Shedding light on the ‘dark side’ of phylogenetic comparative methods [PDF]

open access: yes, 2016
ORCID: 0000-0003-4919-8655© 2016 The Authors. Methods in Ecology and Evolution published by John Wiley & Sons Ltd on behalf of British Ecological Society This is an open access article under the terms of the Creative Commons Attribution License, which
Beaulieu   +64 more
core   +2 more sources

Courtship entanglements: a first report of mating behavior and sexual dichromatism in the Southeast Asian keel-bellied whipsnake, Dryophiops rubescens [PDF]

open access: yes, 2012
We describe the first observations of courtship behavior and sexual dichromatism in the keel-bellied whipsnake, Dryophiops rubescens, from an encounter near Sandakan, eastern Sabah, Borneo, Malaysia.
Johnny, Kim   +2 more
core  

The chloride channel cystic fibrosis transmembrane conductance regulator (CFTR) controls cellular quiescence by hyperpolarizing the cell membrane during diapause in the crustacean Artemia [PDF]

open access: yes, 2019
Cellular quiescence, a reversible state in which growth, proliferation, and other cellular activities are arrested, is important for self-renewal, differentiation, development, regeneration, and stress resistance.
Bossier, Peter   +10 more
core   +1 more source

Viviparity Stimulates Diversification in an Order of Fish

open access: yes, 2016
International audienceSpecies richness is distributed unevenly across the tree of life and this may be influenced by the evolution of novel phenotypes that promote diversification.
Helmstetter, AJ   +5 more
core   +2 more sources

First captive breeding of a night skink (Scincidae: Eremiascincus) from Timor-Leste, Lesser Sunda Islands, with remarks on the reproductive biology of the genus [PDF]

open access: yes, 2016
We report two instances of captive breeding in a species of Timorese night skink (genus Eremiascincus Greer, 1979) in October and December 2012. Four and three neonates, respectively, with total lengths of ca 40 mm each, were discovered during routine ...
Beck, Lother   +5 more
core  

Snake reproduction – ovipary, vivipary and ovovivipary [PDF]

open access: yes, 2019
Zmije su vrlo raznolika i široko rasprostranjena skupina životinja. Nastanjuju raznolika staništa, što zahtjeva specifične prilagodbe. Kao i za niz drugih aktivnosti, morale su razviti prilagodbe za razmnožavanje.
Prpić, Paula
core   +2 more sources

A predictive framework and review of the ecological impacts of exotic plant invasions on reptiles and amphibians [PDF]

open access: yes, 2011
The invasive spread of exotic plants in native vegetation can pose serious threats to native faunal assemblages. This is of particular concern for reptiles and amphibians because they form a significant component of the world's vertebrate fauna, play a ...
Martin, LJ, Murray, BR
core   +1 more source

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