caa a22 4500 606226826 CHVBK 20210128101155.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10641-014-0265-4 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0265-4 Bidirectional sex change in the magenta dottyback Pictichromis porphyrea [Elektronische Daten] first evidence from the field in Pseudochromidae [T. Kuwamura, T. Kadota, S. Suzuki] Protogyny and protandry are well known among fishes, but bidirectional sex change has been reported from only 25 species in six families; field evidence is limited to nine species in four families. The present study confirmed bidirectional sex change of the magenta dottyback Pictichromis porphyrea in the field, the first field evidence for this phenomenon in the family Pseudochromidae. Field experiments were conducted on the patch reefs of Sesoko Island, Okinawa. The sex ratio was female-biased, and males were significantly larger than females. These features are common to protogynous species with a polygynous mating system, although mating behavior was not observed. When members of the opposite sex were removed from a certain area, nearly half of the tagged fish moved to different sites. Among the fish that moved from the original site, four females changed to male, and two males changed to female. Gamete release was confirmed both before and after the sex change. The sex-changed males were larger than their neighbors, whereas the sex-changed females were smaller than their neighbors, suggesting that the sex change was socially controlled in both directions. Springer Science+Business Media Dordrecht, 2014 Bidirectional sex change nationallicence Hermaphroditism nationallicence Mate removal nationallicence Polygyny nationallicence Protogyny nationallicence Pseudochromidae nationallicence Kuwamura T. School of International Liberal Studies, Chukyo University, 466-8666, Nagoya, Japan aut Kadota T. Seikai National Fisheries Research Institute, Fisheries Research Agency, 851-2213, Nagasaki, Japan aut Suzuki S. Transdisciplinary Research Organization for Subtropics and Island Studies, University of the Ryukyus, 903-0213, Okinawa, Japan aut Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 201-207 0378-1909 98:1<201 2015 98 10641 https://doi.org/10.1007/s10641-014-0265-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0265-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kuwamura T. School of International Liberal Studies, Chukyo University, 466-8666, Nagoya, Japan aut NATIONALLICENCE 700 1- Kadota T. Seikai National Fisheries Research Institute, Fisheries Research Agency, 851-2213, Nagasaki, Japan aut NATIONALLICENCE 700 1- Suzuki S. Transdisciplinary Research Organization for Subtropics and Island Studies, University of the Ryukyus, 903-0213, Okinawa, Japan aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 201-207 0378-1909 98:1<201 2015 98 10641