Results 41 to 50 of about 5,244 (196)
Acta Biologica, 2018 Here, we describe the anatomy of the female reproductive system of the aquatic, viviparous caecilian Typhlonectes natans. We conducted our research on two adult females using light microscopy and reflected our results with the available literature data ...
Jakub Dymek, Anna Dymek, Artur Osikowski
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Reptilian Viviparity and Dollo's Law [PDF]
Evolution, 1998 It has been suggested repeatedly that the evolutionary transition from oviparity (egg-laying) to viviparity (live-bearing) in reptiles is irreversible. However, these adaptive arguments have yet to be tested by detailed examination of the phylogenetic distribution of oviparity and viviparity across a broad range of taxa.
Michael S Y, Lee, Richard, Shine
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Zygoparity and sex steroid hormone profiles in bluemouth Helicolenus dactylopterus [PDF]
, 2017 Two hundred and seven individuals (103 females and 104 males) of bluemouth Helicolenus dactylopterus (Scorpaeniformes, Sebastidae), a commercially important deep-water species with an unusual reproductive strategy, from the eastern Atlantic Ocean ranging
Barcellos +30 more
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Frontiers in Ecology and Evolution, 2021 Sexual conflict is caused by differences between the sexes in how fitness is maximized. These differences are shaped by the discrepancy in the investment in gametes, how mates are chosen and how embryos and young are provided for.
David N. Reznick +3 more
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An overview of sex and reproductive immunity from an evolutionary/anthropological perspective
Immunological Medicine, 2021 Mammalian pregnancy is a curious life phenomenon. Immunologically, the mechanism of pregnancy is difficult to explain because it involves the coexistence of an external foreign body (the embryo) and the host (the mother) for a period of time.
Yoshihiko Araki +3 more
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Sceloporus megalepidurus [PDF]
, 2006 Number of Pages: 5Integrative BiologyGeological ...
Chiszar, David +4 more
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Frontiers in Physiology, 2022 Elasmobranchs have a very distinct metabolism, and many aspects related to the energetic dynamics of these animals remain poorly investigated. The reproductive period is particularly vulnerable for viviparous species, as part of the energy reserves of ...
Natascha Wosnick +6 more
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Why are some species older than others? A large-scale study of vertebrates. [PDF]
, 2016 BACKGROUND: Strong variations are observed between and within taxonomic groups in the age of extant species and these differences can clarify factors that render species more vulnerable to extinction.
Cattin, L. +3 more
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Evidence for cryptic speciation in directly transmitted Gyrodactylid parasites of Trinidadian guppies [PDF]
, 2015 Cryptic species complexes are common among parasites, which tend to have large populations and are subject to rapid evolution. Such complexes may arise through host-parasite co-evolution and/or host switching.
Cable, Jo +5 more
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Genetic control of viviparity in common bean
Scientia Agricola: In common bean (Phaseolus vulgaris) harvesting is carried out in the field. It is therefore necessary that cultivars be tolerant to viviparity, i.e., germination of grains still in the pods.
Laís Andrade Pereira +3 more
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