Results 21 to 30 of about 655 (157)
A new species of skin-feeding caecilian and the first report of reproductive mode in Microcaecilia (amphibia: Gymnophiona: Siphonopidae). [PDF]
PLoS ONE, 2013 A new species of siphonopid caecilian, Microcaecilia dermatophagasp. nov., is described based on nine specimens from French Guiana. The new species is the first new caecilian to be described from French Guiana for more than 150 years. It differs from all
Mark Wilkinson +3 more
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Progressive Exaptation of Endogenous Retroviruses in Placental Evolution in Cattle
Biomolecules, 2023 Viviparity is made possible by the placenta, a structure acquired relatively recently in the evolutionary history of eutherian mammals. Compared to oviparity, it increases the survival rate of the fetus, owing to the eutherian placenta. Questions such as
Toshihiro Sakurai +2 more
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Bacterial community dynamics during embryonic development of the little skate (Leucoraja erinacea)
Animal Microbiome, 2021 Background Microbial transmission from parent to offspring is hypothesized to be widespread in vertebrates. However, evidence for this is limited as many evolutionarily important clades remain unexamined.
Katelyn Mika +3 more
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Animals, 2022 The sub-order Scorpenoidei appears to be particularly interesting due to the presence of intermediate stages between oviparity and viviparity in several species.
Cristina Porcu +8 more
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An Oviparous Species of Peripatus [PDF]
Nature, 1891 MR. DENDY'S observation of the extrusion of incompletely developed eggs in Peripatus is not, as he appears to think, entirely new. Captain Hutton was the first to observe it, in P. novae-zealandiae, and I confirmed his observation for the same species in my monograph of the genus.
openaire +4 more sources
Pregnant Females as Historical Individuals: An Insight From the Philosophy of Evo-Devo
Frontiers in Psychology, 2021 Criticisms of the “container” model of pregnancy picturing female and embryo as separate entities multiply in various philosophical and scientific contexts during the last decades.
Laura Nuño de la Rosa +2 more
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PLoS ONE, 2022 Forms of embryonic nutrition are highly diverse in cartilaginous fishes, which contain oviparity, yolk-sac viviparity and several types of matrotrophic viviparity (histotrophy, oophagy, and placentotrophy). The molecular mechanisms of embryonic nutrition
Yuki Honda +6 more
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Parasite, 2008 Skrjabinelazia rizzoi n. sp. (Seuratoidea), from Podarcis sicula captured at Cammarata, Agrigento Province, Sicily, is distinct from the 13 known species of the genus, including Skrjabinelazia sp. Rizzo from Catania.
Lhermitte N., Bain O., Virga A.
doaj +1 more source
BMC Evolutionary Biology, 2018 Background Energy (resources) acquired by animals should be allocated towards competing demands, maintenance, growth, reproduction and fat storage. Reproduction has the second lowest priority in energy allocation and only is allowed after meeting the ...
Lin Zhang +4 more
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Does the oviparity-viviparity transition alter the partitioning of yolk in embryonic snakes?
BMC Evolutionary Biology, 2017 Background The oviparity-viviparity transition is a major evolutionary event, likely altering the reproductive process of the organisms involved. Residual yolk, a portion of yolk remaining unutilized at hatching or birth as parental investment in care ...
Yan-Qing Wu +4 more
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