Results 31 to 40 of about 2,744,238 (299)
Male reproductive proteins and reproductive outcomes [PDF]
American Journal of Obstetrics and Gynecology, 2008 Male reproductive proteins (MRPs), associated with sperm and semen, are the moieties responsible for carrying male genes into the next generation. Evolutionary biologists have focused on their capacity to control conception. Immunologists have shown that MRPs cause female genital tract inflammation as preparatory for embryo implantation and ...
Roberta B, Ness, David A, Grainger
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Female collared flycatchers adjust yolk testosterone to male age, but not to attractiveness [PDF]
, 2004 The differential allocation hypothesis predicts that females invest more resources into reproduction when mating with attractive males. In oviparous animals this can include prefertilization decisions such as the production of larger eggs and the ...
Garamszegi, L. +17 more
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Variation in Male Reproductive Investment and Male Reproductive Success in White Spruce [PDF]
Evolution, 1986 An experimental population composed of ramets of white spruce clones was studied to determine the influence of different levels of clonal male reproductive investment on clonal male reproductive success, where the male reproductive success of different clones in the population was defined as the proportion of the seed crop sired by each clone.
Daniel J, Schoen, Steven C, Stewart
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Haplodiploidy and the evolution of eusociality : worker reproduction [PDF]
, 2013 The authors acknowledge the European Research Council, the Royal Society, and Balliol College for funding.Hamilton’s haplodiploidy hypothesis suggests that the relatively higher relatedness of full sisters in haplodiploid populations promotes altruistic ...
West, Stuart +3 more
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Ghrelin in Female and Male Reproduction [PDF]
International Journal of Peptides, 2010 Ghrelin and one of its functional receptors, GHS-R1a (Growth Hormone Secretagogue Receptor 1a), were firstly studied about 15 years. Ghrelin is a multifunctional peptide hormone that affects several biological functions including food intake, glucose release, cell proliferation… Ghrelin and GHS-R1a are expressed in key cells of both male and female ...
Dupont, Joëlle +4 more
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Reproduction of dogs in the tropics [PDF]
, 2006 Dog overpopulation is considered a serious problem in developing countries and a threat to human health. To be successfully implemented, official dog control measures have to be in accordance with regional beliefs and practices of an area.
Ortega-Pacheco, Antonio
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Environment International, 2022 Background: Humans are widely exposed to chemicals with known or suspected endocrine disrupting effects. Among those are several benzophenones, bisphenols and other phenols commonly used in consumer products.
Hanne Frederiksen +7 more
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Genomic selection and assisted reproduction technologies to foster cattle breeding [PDF]
, 2013 Genomics has been propagated as a paradigm shifting innovation in livestock during the last decade. The possibility of predicting breeding values using genomic information has revolutionized the dairy cattle industry and is now being implemented in beef ...
Garcia, J. F. +3 more
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Strategic male mating effort and cryptic male choice in a scorpionfly [PDF]
, 2001 Engqvist L, Sauer KP. Strategic male mating effort and cryptic male choice in a scorpionfly. Proceedings of the Royal Society B. 2001;268(1468):729-735.In animal species with high male mating effort, males often find themselves in a dilemma: by ...
Sauer, Klaus Peter +1 more
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A Critical Appraisal on the Role of Varicocele in Male Infertility
Advances in Urology, 2012 Varicocele is a major cause of male infertility, as it may impair spermatogenesis through several distinct physiopathological mechanisms. With the recent advances in biomolecular techniques and the development of novel sperm functional tests, it has been
Ricardo Miyaoka, Sandro C. Esteves
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