Mother-to-embryo vitellogenin transport in a viviparous teleost Xenotoca eiseni. [PDF]
Proc Natl Acad Sci U S A, 2019 魚類がお腹の子供に与える栄養素を解明 --哺乳類が失った遺伝子を利用して胎生機構を獲得--. 京都大学プレスリリース. 2019-10-09.Vitellogenin (Vtg), a yolk nutrient protein that is synthesized in the livers of female animals, and subsequently carried into the ovary, contributes to vitellogenesis in oviparous ...
Iida A +8 more
europepmc +3 more sources
Intraovarian Gestation in Viviparous Teleosts: Unique Type of Gestation among Vertebrates [PDF]
, 2021 The intraovarian gestation, occurring in teleosts, makes this type of reproduction a such complex and unique condition among vertebrates. This type of gestation of teleosts is expressed in special morphological and physiological characteristic where ...
Campuzano-Caballero, Juan Carlos +3 more
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Phylogeny and Evolutionary History of the Amniote Egg [PDF]
, 2021 We review morphological features of the amniote egg and embryos in a comparative phylogenetic framework, including all major clades of extant vertebrates.
Blackburn, Daniel G. +2 more
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Reproductive anatomy of Chondrichthyans: notes on specimen handling and sperm extraction. II. Sharks and chimaeras [PDF]
, 2021 [EN] Sperm extraction and artificial insemination may serve ex situ conservation initiatives for threatened sharks and related species. A comparison of the reproductive anatomy of eight chondrichthyans is presented in this study, emphasizing the ...
Asturiano, Juan F. +2 more
core +1 more source
, 2022 Reproduction is the backbone of animal-based food production. The reproductive systems of animals vary and are species-dependent. In this regard, all terrestrial animals perform internal fertilization, whereas aquatic animals perform different ...
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Parent‐Offspring Conflict in the Evolution of Vertebrate Reproductive Mode [PDF]
, 2004 : We propose and evaluate the hypothesis that parent‐offspring conflict over the degree of maternal investment has been one of the main selective factors in the evolution of vertebrate reproductive mode.
Crespi, Bernard +1 more
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Roles of Estrogens in the Healthy and Diseased Oviparous Vertebrate Liver. [PDF]
, 2021 The liver is a vital organ that sustains multiple functions beneficial for the whole organism. It is sexually dimorphic, presenting sex-biased gene expression with implications for the phenotypic differences between males and females.
Gourdy, P. +5 more
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Effects of luteectomy in early pregnancy on the maintenance of gestation and plasma progesterone concentrations in the viviparous temperate lizard Barisia imbricata imbricata [PDF]
, 2010 Background Several studies have shown that the corpus luteum is the principal source of progesterone during the gravidity period in reptiles; however, its participation in the maintenance of gestation in the viviparous squamata is in dispute. The effects
Martín Martínez-Torres +51 more
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Sperm Development and Packaging in Three Surfperch Species (Teleostei: Embiotocidae) [PDF]
, 2022 Surfperches are a family of predominantly marine fishes with a reproductive mode that is uncommon in teleosts (i.e., viviparity). Investigating spermatogenesis and sperm packaging is important to gain a complete understanding of viviparity.
Justin Stuart
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Estudio circanual de los cambios morfológicos y funcionales del ovario y la espermateca del urodelo ambystoma mexicanum [PDF]
, 2020 El ajolote de Xochimilco (Ambystoma mexicanum) es una salamandra neoténica endémica de la zona lacustre del valle de México. Aunque es una especie que ha sido utilizada como un modelo biológico en diversos estudios ontogénicos y biomédicos, son escasos ...
JOSE RODRIGO RIVERA LOPEZ
core +2 more sources