Curling Male Tails (VIDEO) BMC (BioMed Central) This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Mating behavior in nematodes is coordinated by neurotransmitters such as acetylcholine and GABA, which regulate opposing muscle groups as the male tail curls ventrally around the hermaphrodite, and then dorsally on locating the vulva. Credit Paul Sternberg and Allyson Whittaker, California Institute of Technology Usage Restrictions Video must only be used if copyright details are correctly cited as above. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.