caa a22 4500 606228039 CHVBK 20210128101201.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10641-014-0366-0 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0366-0 Estimation of spawning migration distance of the white-streaked grouper ( Epinephelus ongus ) in an Okinawan coral reef system using conventional tag-and-release [Elektronische Daten] [Atsushi Nanami, Itaru Ohta, Taku Sato] The white-streaked grouper (Epinephelus ongus) is an important fisheries target in the region around Okinawa. This species forms spawning aggregations at specific spawning grounds in the last-quarter of the moon in April and/or May. Using a tag-and-release method, we estimated the migration distance and the degree of unified movement of groupers associated with the spawning migration. In total, 1157 E. ongus individuals were tagged and released at their home grounds in the non-spawning period and 350 were tagged at a known spawning ground (Yonara Channel) in the spawning period. For the fish that were released at the home grounds, 23 individuals were recaptured at the spawning ground during in the spawning periods. For the individuals that were released at the spawning ground, six individuals were recaptured outside of the spawning ground. The estimated migration distances from the home ground to the spawning ground ranged from 2.2 to 8.8km. There was no significant relationship between the fish total length (TL) and migration distance for both males and females. Tagged individuals inhabiting the same home ground were recaptured at different points at the spawning ground separated by a distance of over several hundred meters. Furthermore, tagged individuals that were released at the same point at the spawning ground were recaptured at different home grounds separated by a distance up to several kilometers. These results suggest that unified movements associated with the spawning migration are not high for E. ongus, which is contradict with some previous studies suggesting the coordinated spawning migration of other Epinephelus spp. Springer Science+Business Media Dordrecht, 2014 Spawning aggregation nationallicence Grouper nationallicence Epinephelus ongus nationallicence Migration distance nationallicence Fishery management nationallicence Nanami Atsushi Research Center for Sub-tropical Fisheries, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukai-Ota 148-446, 907-0451, Ishigaki, Okinawa, Japan aut Ohta Itaru Okinawa Prefectural Fisheries Research and Extension Center, Kyan 1528, 901-0354, Itoman, Okinawa, Japan aut Sato Taku Research Center for Sub-tropical Fisheries, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukai-Ota 148-446, 907-0451, Ishigaki, Okinawa, Japan aut Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1387-1397 0378-1909 98:5<1387 2015 98 10641 https://doi.org/10.1007/s10641-014-0366-0 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/s10641-014-0366-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nanami Atsushi Research Center for Sub-tropical Fisheries, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukai-Ota 148-446, 907-0451, Ishigaki, Okinawa, Japan aut NATIONALLICENCE 700 1- Ohta Itaru Okinawa Prefectural Fisheries Research and Extension Center, Kyan 1528, 901-0354, Itoman, Okinawa, Japan aut NATIONALLICENCE 700 1- Sato Taku Research Center for Sub-tropical Fisheries, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukai-Ota 148-446, 907-0451, Ishigaki, Okinawa, Japan aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1387-1397 0378-1909 98:5<1387 2015 98 10641