n5750547 Posted May 8, 2014 Report Share Posted May 8, 2014 Thought some people might be interested in reading about this. Not sure if this is supposed to go in the off-topic discussion section but oh well. Male-only gene trick could leave invasive fish species floundering Link to comment Share on other sites More sharing options...
buck Posted May 9, 2014 Report Share Posted May 9, 2014 That’s really interesting! hopefully it works Link to comment Share on other sites More sharing options...
Lictoga Posted May 9, 2014 Report Share Posted May 9, 2014 Good read, thank you for sharing that Link to comment Share on other sites More sharing options...
grubby Posted May 9, 2014 Report Share Posted May 9, 2014 I wonder if it would work with Tilapia and gambusia too. Link to comment Share on other sites More sharing options...
grubby Posted May 9, 2014 Report Share Posted May 9, 2014 Only thing is aren't there some species of fish which will change sex to breed in the absence of females. I don't remember which ones though. Link to comment Share on other sites More sharing options...
Yodapwnsasmurf Posted May 9, 2014 Report Share Posted May 9, 2014 They were looking at doing it with Cane Toads as well.. Link to comment Share on other sites More sharing options...
n5750547 Posted May 9, 2014 Author Report Share Posted May 9, 2014 I'm sure there are a few things they are going to have to work out before letting this loose. After all, "extremely low" chances of it spreading to non targeted species might not be good enough. Tapatalk Note 3 Link to comment Share on other sites More sharing options...
lochdan Posted May 10, 2014 Report Share Posted May 10, 2014 Only thing is aren't there some species of fish which will change sex to breed in the absence of females. I don't remember which ones though. Remember reading that sex changing fish species usually move from female to male rather than from male to female. And that fish which are capable of male to female changes all come from species where every individual fish is born as a male??? If that's right , Carp having males and female juvies .... they might be in trouble Link to comment Share on other sites More sharing options...
buck Posted May 10, 2014 Report Share Posted May 10, 2014 Remember reading that sex changing fish species usually move from female to male rather than from male to female. And that fish which are capable of male to female changes all come from species where every individual fish is born as a male??? If that's right , Carp having males and female juvies .... they might be in trouble I’m sure if carp (the target fish for this eradication) could change sex they wouldn’t have gotten this fare in the testing, I’m sure it would have been squished in initial stages. These people do have a lot of knowledge and years of research on their pests, there not idiots. Link to comment Share on other sites More sharing options...
lochdan Posted May 10, 2014 Report Share Posted May 10, 2014 Sure they're not idiots .... but given a number of spectacular biological control failures it doesn't hurts to have a little open forum and discussion. Stuff like "what other things will cane toads eat" can and does fall between the cracks when left solely to science and government agency. Link to comment Share on other sites More sharing options...
buck Posted May 10, 2014 Report Share Posted May 10, 2014 yeahhh I think there testing is a little bit more stringent then it was in 1935… and the main issue was that the cane beetle the toad was meant to eat sits at the top of the cane where the toad can’t get to it so the toad turned to any and everything else, I agree total f up. I know for a fact though that CSIRO have to jump through some serious hoops and go through an all angles look when considering how something will go in an environment when introduced to deal with other invasive pests. Biological control of water hyacinth | CSIRO the weevils used in that where tested against any and all plants that they might turn to next to be sure they wouldn’t, I guess they learn from their mistakes. In any case if they had missed that and they could change sex, there test will simply fail and the test fish will still reproduce. That’s just my part in the open forum discussion… Link to comment Share on other sites More sharing options...
Betta-Cray_z Posted May 28, 2014 Report Share Posted May 28, 2014 just like clownfish, when the dominant female dies, the next largest male will become female and have a growth spurt Link to comment Share on other sites More sharing options...
