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Paternity in mallards: Effects of sperm quality and female sperm selection for inbreeding avoidance
Postcopulatory processes might play an important role in sexual selection. In theory, fertilization success could be controlled by females via selection of particular sperm within their reproductive… Expand
Urine of reproductively mature female rainbow trout, Oncorhynchus mykiss (Walbaum), contains a priming pheromone which enhances plasma levels of sex steroids and gonadotrophin II in males
Urine of reproductively mature female rainbow trout was shown to contain a priming pheromone which raised the levels of 17a,20β-dihydroxy-4-pregnen-3-one (17,20β-P), testosterone and gonadotrophin II… Expand
Changes in plasma gonadotropin II and sex steroid hormones, and sperm production of striped bass after treatment with controlled-release gonadotropin-releasing hormone agonist-delivery systems.
- C. Mylonas, A. P. Scott, E. L. Vermeirssen, Y. Zohar
- Biology, Medicine
- Biology of reproduction
- 1 September 1997
Spermiating striped bass, a perciform fish, were treated with two controlled-release gonadotropin-releasing hormone agonist (GnRHa)-delivery systems, and the resulting changes in plasma gonadotropin… Expand
Position paper on passive sampling techniques for the monitoring of contaminants in the aquatic environment – Achievements to date and perspectives
This paper, based on the outcome of discussions at a NORMAN Network-supported workshop in Lyon (France) in November 2014 aims to provide a common position of passive sampling community experts… Expand
Fertility and motility of sperm from Atlantic halibut (Hippoglossus hippoglossus) in relation to dose and timing of gonadotrophin-releasing hormone agonist implant
- E. L. Vermeirssen, C. M. D. Quero, R. Shields, B. Norberg, D. E. Kime, A. P. Scott
- 1 February 2004
Abstract In broodstocks of Atlantic halibut, Hippoglossus hippoglossus , male and female gamete production often becomes unsynchronised towards the end of the spawning season—milt becomes very… Expand
Male priming pheromone is present in bile, as well as urine, of female rainbow trout
The bile of sexually mature female rainbow trout Oncorhynchus mykiss has pheromonal activity which causes a significant increase in concentrations of 17,20β-dihydroxy-4-pregnen-3-one in the plasma of… Expand
Excretion of free and conjugated steroids in rainbow trout (Oncorhynchus mykiss): evidence for branchial excretion of the maturation-inducing steroid, 17,20 beta-dihydroxy-4-pregnen-3-one.
The goal of this study was to identify excretory routes of three main steroids produced by sexually mature male and female rainbow trout: 17,20 beta-dihydroxy-4-pregnen-3-one (17,20 beta-P), sulfated… Expand
Plasma steroids in mature common dentex (Dentex dentex) stimulated with a gonadotropin-releasing hormone agonist.
- L. Greenwood, A. P. Scott, E. L. Vermeirssen, C. Mylonas, M. Pavlidis
- Biology, Medicine
- General and comparative endocrinology
- 1 July 2001
The aim of this study was to identify the major C21 steroids produced in vivo during artificially induced final oocyte maturation and spawning in female common dentex (Dentex dentex). During the… Expand
Female rainbow trout urine contains a pheromone which causes a rapid rise in plasma 17,20β‐dihydroxy‐4‐pregnen‐3‐one levels and milt amounts in males
Previous studies have shown that spermiating male rainbow trout respond to the presence of female urine in the water with significant increases in plasma levels of gonadotrophin II,… Expand
Prolonged‐release gonadotrophin‐releasing hormone analogue implants enhance oocyte final maturation and ovulation, and increase plasma concentrations of sulphated C21 steroids in North Sea plaice
Reproductively mature female plaice were implanted with or without 50 μg of gonadotrophin-releasing hormone analogue (GnRHa), suspended in either coconut oil or methacrylate resin. The weight of the… Expand