"Reproductive behaviour of female rosy bitterling Rhodeus ocellatus in response to a female-biased operational sex ratio" . . . "151" . "alternative reproductive behaviour; female aggression; operational sex ratio; bitterling"@en . "[7FCBA811C85C]" . "Behaviour" . "000335205100004" . "Yu, D." . . "10.1163/1568539X-00003168" . "6" . "14"^^ . "1"^^ . "Liao, C." . "0005-7959" . "Reproductive behaviour of female rosy bitterling Rhodeus ocellatus in response to a female-biased operational sex ratio"@en . . . "I, P(GBP505/12/G112)" . . . "Reichard, Martin" . . . "5"^^ . . . . . "42257" . "NL - Nizozemsko" . "Liu, H." . "While the effect of Operational Sex Ratio (OSR) on reproductive behaviour of males has been studied extensively, little is known of the response of females facing a female-biased OSR. We investigated the effect of different OSRs on female reproductive behaviour using the rosy bitterling, Rhodeus ocellatus, a freshwater fish that lays its eggs inside the gills of living freshwater mussels. Three levels of OSR (male/female ratio 1:1, 1:3 and 1:5) were tested. We demonstrated that inspection of the mussel (spawning substrate) by individual females increased with increasingly female-biased OSR, but that the rate of following territorial male decreased. Aggression towards other females was not affected by the OSR. Interestingly, when a male bitterling led a non-dominant female towards the mussel, the dominant female would become aggressive to the male and chase the non-dominant female away. Aggression towards male followed a bell-shaped pattern and was highest at an OSR of 1:3. In both the female-biased OSRs examined, almost 50% of dominant females tended to chase away other females and defend the mussel, showing territoriality in a similarmanner to males. These observations suggest that female reproductive behaviour is strongly affected by the OSR, and their reproductive tactics during courtship change from a passive role in courtship (following a male) to an active role in courtship (approaching a male), with presence of female territorial behaviour as the OSR becomes increasingly female-biased. This study provides strong evidence that a female-biased OSR has an important effect on female reproductive behaviour."@en . "RIV/68081766:_____/14:00428525!RIV15-GA0-68081766" . "RIV/68081766:_____/14:00428525" . . "Reproductive behaviour of female rosy bitterling Rhodeus ocellatus in response to a female-biased operational sex ratio" . . "Chen, Y." . "Reproductive behaviour of female rosy bitterling Rhodeus ocellatus in response to a female-biased operational sex ratio"@en . . . "While the effect of Operational Sex Ratio (OSR) on reproductive behaviour of males has been studied extensively, little is known of the response of females facing a female-biased OSR. We investigated the effect of different OSRs on female reproductive behaviour using the rosy bitterling, Rhodeus ocellatus, a freshwater fish that lays its eggs inside the gills of living freshwater mussels. Three levels of OSR (male/female ratio 1:1, 1:3 and 1:5) were tested. We demonstrated that inspection of the mussel (spawning substrate) by individual females increased with increasingly female-biased OSR, but that the rate of following territorial male decreased. Aggression towards other females was not affected by the OSR. Interestingly, when a male bitterling led a non-dominant female towards the mussel, the dominant female would become aggressive to the male and chase the non-dominant female away. Aggression towards male followed a bell-shaped pattern and was highest at an OSR of 1:3. In both the female-biased OSRs examined, almost 50% of dominant females tended to chase away other females and defend the mussel, showing territoriality in a similarmanner to males. These observations suggest that female reproductive behaviour is strongly affected by the OSR, and their reproductive tactics during courtship change from a passive role in courtship (following a male) to an active role in courtship (approaching a male), with presence of female territorial behaviour as the OSR becomes increasingly female-biased. This study provides strong evidence that a female-biased OSR has an important effect on female reproductive behaviour." .