Results 141 to 150 of about 25,915 (289)

Reproductive biology, distribution and abundance of Squalus megalops (Macleay, 1881) and Squalus mitsukurii (Jordan & Snyder, 1903) off southern Brazil, southwest Atlantic

open access: yesJournal of Fish Biology, EarlyView.
Abstract Squalus megalops and Squalus mitsukurii are recognized as the most abundant Squalus species in the southern Brazil region. Currently, S. megalops is listed as ‘least concern’ (LC) and S. mitsukurii as ‘endangered’ (EN). However, at the regional level, both species are classified as ‘data deficient’ – DD, due to the lack of population local ...
Mônica Camila Lourenço   +2 more
wiley   +1 more source

Mating system variation and gene expression in the male reproductive tract of Peromyscus mice

open access: yesMolecular Ecology, EarlyView.
Abstract Genes involved in reproduction often evolve rapidly at the sequence level due to postcopulatory sexual selection (PCSS) driven by male–male competition and male–female sexual conflict, but the impact of PCSS on gene expression has been under‐explored.
Erin R. Voss, Michael W. Nachman
wiley   +1 more source

Histochemical structure and immunolocalisation of the hyaluronan system in the dromedary oviduct [PDF]

open access: yes, 2015
Abdel-Aleem A. El-Saba   +50 more
core   +1 more source

Sexual Selection on Non‐Ornamental Traits Is Underpinned by Evidence of Genetic Constraints on Sex‐Biased Expression in Dusky Pipefish

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Species lacking distinct secondary sex characteristics, such as differences in size or morphology, are often thought to experience lower levels of sex‐specific selection in comparison to highly sexually dimorphic organisms. However, monomorphism in classic visible traits could be a result of genetic or physiological constraints that prevent ...
Nicole M. Tosto   +4 more
wiley   +1 more source

Identification of nitric oxide synthase in human and bovine oviduct [PDF]

open access: yes, 2017
Nitric oxide synthase (NOS) is responsible for the biological production of nitric oxide (NO) in several organs. NOS activity has also been localized in the reproductive tract, although direct evidence for its presence in the human or bovine oviduct is ...
Dubey, R.K.   +7 more
core  

Functional Characterization and Heterogeneity Analysis of Ribosomal Proteins in Mouse Preimplantation Embryos

open access: yesThe FASEB Journal, Volume 39, Issue 11, 15 June 2025.
We selected and investigated six ribosomal proteins in the early mouse embryo. Knocking down these ribosomal proteins generally had inhibitory effects on the morula‐to‐blastocyst transition, but the details and degree of these effects varied. This provides a new example of ribosome heterogeneity in preimplantation embryos.
Seung Jae Lee   +5 more
wiley   +1 more source

Tmx2 Maintains Mitochondrial Function to Support Preimplantation Embryogenesis

open access: yesThe FASEB Journal, Volume 39, Issue 11, 15 June 2025.
TMX2 is a member of the thioredoxin‐related transmembrane protein family. It exhibits specific expression in mouse preimplantation embryos, and its subcellular localization is closely associated with mitochondria. Knockdown of Tmx2 in embryos results in a reduction in mitochondrial number, a decline in mitochondrial membrane potential, and an elevation
Shangrong Zhang   +15 more
wiley   +1 more source

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