A triplet pregnancy is described, in which the diagnosis of in utero growth restriction is questioned after postnatal suspicion of superfetation, by using neurosonography and ophthalmic examination to aid gestational age assessment.
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Pregnancy Complications and Feto-Maternal Monitoring in Rabbits.
Vet Sci
October 2023
Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal.
Rabbit production holds significant relevance in modern agriculture due to its potential as a sustainable source of high-quality protein and efficient feed conversion, contributing to food security and economic diversification. Nevertheless, studies incorporating feto-maternal monitoring in this species are uncommon. This review gathers research on the monitoring and evaluation of factors affecting rabbit gestation, providing a better understanding of the causes of prenatal development abnormalities.
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Curr Biol
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Department of Biology, University of California, Riverside, Riverside, CA 92521, USA. Electronic address:
How and why complex organs evolve is generally lost to history. The mammalian placenta, for example, was derived from a single common ancestor that lived over 100 million years ago. Therefore, the selective factors favoring this complex trait remain obscure.
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Methods Mol Biol
March 2020
Centre de Recherché en Reproduction et Fertilité, Faculté de Médicine Vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada.
The reproduction of the mink, Neovison vison, has been extensively studied over the past 70 years. The endocrine control of pregnancy is reasonably well understood, but our understanding of early embryo development is limited. The mink is one of the best characterized mammals for the study of embryonic diapause, but in order to unravel the complex interactions that occur between the blastocyst and the uterus during diapause and reactivation, a defined culture media system that supports growth is essential.
View Article and Find Full Text PDFThe evolution of the placenta drives a shift in sexual selection in livebearing fish.
Nature
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Department of Biology, University of California, Riverside, California 92521, USA.
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Department of Biology, University of California, Riverside, CA 92521, USA.
This study presents a description of the life histories of all four species of the genus Phallichthys, found primarily in the Atlantic slope of Central America (ranging from northern Panama to Mexico), based on a combination of data collected from preserved and living specimens. All species produced a single litter of offspring before developing another brood (i.e.
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