The agricultural contaminant 17β-Trenbolone (cas 10161-33-8) disrupts male-male competition in the guppy (Poecilia reticulata)
-
Add time:07/22/2019 Source:sciencedirect.com
Despite a growing literature highlighting the potential impact of human-induced environmental change on mechanisms of sexual selection, relatively little is known about the effects of chemical pollutants on male-male competition. One class of environmental pollutant likely to impact male competitive interactions is the endocrine-disrupting chemicals (EDCs), a large and heterogeneous group of chemical contaminants with the potential to influence morphology, physiology and behaviour at minute concentrations. One EDC of increasing concern is the synthetic, androgenic steroid 17β-trenbolone, which is used globally to promote growth in beef cattle. Although 17β-trenbolone has been found to cause severe morphological and behavioural abnormalities in fish, its potential impact on male-male competition has yet to be investigated. To address this, we exposed wild male guppies (Poecilia reticulata) to an environmentally realistic concentration of 17β-trenbolone (average measured concentration: 8 ng/L) for 21 days using a flow-through system. We found that, in the presence of a competitor, 17β-trenbolone-exposed males carried out more frequent aggressive behaviours towards rival males than did unexposed males, as well as performing less courting behaviour and more sneak (i.e., coercive) mating attempts towards females. Considering that, by influencing mating outcomes, male-male competition has important consequences for population dynamics and broader evolutionary processes, this study highlights the need for greater understanding of the potential impact of EDCs on the mechanisms of sexual selection.
We also recommend Trading Suppliers and Manufacturers of Trenbolone (cas 10161-33-8). Pls Click Website Link as below: cas 10161-33-8 suppliers
Prev:Veterinary drug, 17β-Trenbolone (cas 10161-33-8) promotes the proliferation of human prostate cancer cell line through the Akt/AR signaling pathway
Next:Trenbolone (cas 10161-33-8) acetate metabolites promote ovarian growth and development in adult Japanese medaka (Oryzias latipes)) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Assessing the fate and transformation by-product potential of Trenbolone (cas 10161-33-8) during chlorination07/25/2019
- Low concentrations of 17β-Trenbolone (cas 10161-33-8) induce female-to-male reversal and mortality in the frog Pelophylax nigromaculatus07/24/2019
- Trenbolone (cas 10161-33-8) acetate metabolites promote ovarian growth and development in adult Japanese medaka (Oryzias latipes)07/23/2019
- Veterinary drug, 17β-Trenbolone (cas 10161-33-8) promotes the proliferation of human prostate cancer cell line through the Akt/AR signaling pathway07/20/2019
- Transformation kinetics of Trenbolone (cas 10161-33-8) acetate metabolites and estrogens in urine and feces of implanted steers07/21/2019
- 17β-Trenbolone (cas 10161-33-8), an anabolic–androgenic steroid as well as an environmental hormone, contributes to neurodegeneration07/19/2019
- Fish on steroids: Temperature-dependent effects of 17β-Trenbolone (cas 10161-33-8) on predator escape, boldness, and exploratory behaviors07/18/2019
- Detection and quantification of metastable photoproducts of Trenbolone (cas 10161-33-8) and altrenogest using liquid chromatography–tandem mass spectrometry07/17/2019
-
Health and Chemical more >
-
Related Products