期刊
JOURNAL OF CHEMICAL ECOLOGY
卷 37, 期 3, 页码 260-262出版社
SPRINGER
DOI: 10.1007/s10886-011-9923-6
关键词
Electro-olfactogram (EOG); Gonadotropin releasing hormone; Hormone; Neogobius melanostomus; 11-Oxo-etiocholanolone; Pheromone; Round goby; Steroid
资金
- NSERC [STPGP 322317-05, 3814161]
- Ontario Ministry of Research and Innovation
- Ontario Ministry of Training, Colleges and Universities Ontario
- University of Windsor Faculty of Graduate Studies
The round goby, Neogobius melanostomus, is a highly successful invasive species in the Laurentian Great Lakes. Previous behavioral studies implied that females are attracted by pheromones to the nests of reproductive males, and that males release putative steroidal pheromones-unconjugated as well as conjugated forms of 3 alpha-hydroxy-5 beta-androstane-11,17-dione (11-O-ETIO)-following stimulation of the hypothalamic-gonadal axis with salmon gonadotropin releasing hormone analog (sGnRHa). In this study, we tested the olfactory system of females in response to extracts containing these released steroids. We compared electrical field potential responses from the olfactory epithelium (electro-olfactogram, EOG) of non-reproductive females to methanol extracts of water that previously held males, collected before and after injection of the males with sGnRHa or saline. The females showed increased EOG responses to the post-injection extracts when males were treated with sGnRHa but not saline. This finding provides further evidence for interactions between male and female N. melanostomus via steroidal reproductive pheromones.
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