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http://dx.doi.org/10.5657/KFAS.2021.0180

Annual Reproductive Cycle of the Neon Damselfish Pomacentrus coelestis, in Chuuk Lagoon, Micronesia  

Kim, Han-Jun (Marine Ecosystem Research Center, KIOST)
Han, Jeonghoon (Marine Biotechnology Research Center, KIOST)
Hur, Sung-Pyo (Jeju Marine Research Center, KIOST)
Lee, Kyun-Woo (Marine Biotechnology Research Center, KIOST)
Choi, Young-Ung (Marine Ecosystem Research Center, KIOST)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.54, no.2, 2021 , pp. 180-187 More about this Journal
Abstract
This study was conducted to investigate the reproductive characteristics of the Neon damselfish Pomacentrus coelestis in Chuuk lagoon (7°27' N, 151°53' E), Micronesia, Equatorial Pacific Ocean. The specimens used in this study were collected from August 2009 to September 2010 from around the coral reef area at a depth of 3-10 m in the northwest coast of Weno Island. Overall, 228 individuals were collected over 14 months from this area, of which 115 were females and 108 were males. Among 108 males, 30 were found to be hermaphrodites and the sex of 5 individuals could not be determined. The overall sex ratio was approximately 1.06:1 (female:male), and the ratio of sexually active individuals was 0.79:1. The gonadosomatic index (GSI) fluctuated and showed the highest value of 8.43±1.21 in December 2009 and the lowest value of 3.36±0.71 in September 2009 in sexually active females. Males showed the highest GSI value of 2.64±0.93 in June 2010 and the lowest value of 0.35±0.06 in July 2010. Based on the fluctuation of GSI, the trends in the appearance of monthly sexually active individuals, and biopsy of the gonads, P. coelestis was found to be a hermaphrodite species of protogynous type and is considered to be reproductively active throughout the year.
Keywords
Pomacentrus coelestis; Neon damselfish; Reproductive cycle; Protogynous hermaphrodite; Micronesia;
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