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(oviparous)
1,291 results
  • Energy budget of Drosophila embryogenesis. [Letter]
  • CBCurr Biol 2019 Jun 17; 29(12):R566-R567
  • Song Y, Park JO, … Shvartsman SY
  • Eggs of oviparous animals must be prepared to develop rapidly and robustly until hatching. The balance between sugars, fats, and other macromolecules must therefore be carefully considered when loadi…
  • Gestation alters the gut microbiota of an oviparous lizard. [Journal Article]
  • FMFEMS Microbiol Ecol 2019 Jul 01; 95(7)
  • Trevelline BK, MacLeod KJ, … Kohl KD
  • Mammalian pregnancy can alter the diversity, membership and structure of the maternal gut microbiota, but it is unclear whether this phenomenon occurs in vertebrates with different reproductive strat…
  • Evidence for cell turnover as the mechanism responsible for the transport of embryos towards the vagina in viviparous onychophorans (velvet worms). [Journal Article]
  • FZFront Zool 2019; 16:16
  • Treffkorn S, Hernández-Lagos OY, Mayer G
  • CONCLUSIONS: Our results confirm the hypothesis that the uterus of placentotrophic onychophorans grows proximally but is resorbed distally. This is supported by the detection of a proximal proliferation zone and a distal degenerative zone in the two placentotrophic species. Hence, cell turnover might be responsible for the transport of their embryos towards the vagina, analogous to a conveyor belt. Surprisingly, the distal degenerative zone is also found in the non-placentotrophic species, in which cell turnover was unexpected. These findings suggest that the distal degenerative zone is an ancestral feature of Onychophora, whereas the proximal proliferation zone might have evolved in the last common ancestor of the placentotrophic Peripatidae.
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