My lab and collaborating labs are working with issues related to sex role dynamics and operational sex ratios, based on studies of temperate gobies. In this context, we're looking for information on sex determination and primary sex ratios (i.e., egg sex ratios) in temperate (or other) non sex-changing gobies. Sex determination is, as many may know, highly variable in fishes but I haven't been able to detect information about how it works in gobies that don't change sex (which I believe most high-latitude gobies don't do). I'm also very curious about any info on sex ratios in eggs/embryos, provided that sex can be identified at this early stage in temperate gobies (I honestly don't know). I'm struggling to find relevant info via ISI or similar sources. Any advice on sources or other info greatly appreciated!
Best wishes.
I've just started working on a tropical goby, so I'd be interested in this conversation.
Thanks for your interest, Dawn! I belive many, perhaps most, tropical gobies are sex-changers, in which case there's a lot to learn from studies by Grober, Munday and others on sex-changing gobies. Worth checking out.
Thanks. Will do. I'm studying populations in two rivers, and they seem to be on such different trajectories. I've only 1 mth of data though, so we'll see what additional data imply
Look a t our papers: ). A. A. Ortega-Salas, H. Reyes-Bustamante & H.Reyes B. (2013). Sex reversal, growth, and Survival in the guppy Poecilia reticulala (Cyprinodontiformes: Poeciliidae) under laboratory conditions. Research Journal of the Costa Rican Distance Education University. ISSN: 1659-4266 Vol. 5(2), Diciembre, 2013.
A. A. Ortega-Salas, H. Reyes-Bustamante & H.Reyes B. (2013). Sex reversal, growth, and Survival in the swordtail fish Xiphophorus helleri (Cyprinodontiformes: Poeciliidae) in laboratory conditions. Research Journal of the Costa Rican Distance Education University. ISSN: 1659-4266 Vol. 5(2), Diciembre, 2013.
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