Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775)
The brown-marbled grouper, Epinephelus fuscoguttatus, is a long-lived, late-maturing protogynous species listed as Near Threatened by the IUCN. In Pohnpei, Micronesia, reproductively active brown-marbled grouper were tagged with acoustic and spaghetti-type tags at a multi-species fish spawning aggre...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Springer Verlag
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/35619 |
| _version_ | 1848754545185783808 |
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| author | Rhodes, K. McIlwain, Jennifer Joseph, E. Nemeth, R. |
| author_facet | Rhodes, K. McIlwain, Jennifer Joseph, E. Nemeth, R. |
| author_sort | Rhodes, K. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The brown-marbled grouper, Epinephelus fuscoguttatus, is a long-lived, late-maturing protogynous species listed as Near Threatened by the IUCN. In Pohnpei, Micronesia, reproductively active brown-marbled grouper were tagged with acoustic and spaghetti-type tags at a multi-species fish spawning aggregation (FSA) site to establish patterns of movement, residency and seasonality. Telemetry confirmed the use of common reproductive migratory corridors and significant sex-specific variations in residency at the FSA. Combined underwater visual census and telemetry data verified a 3-month peak aggregation period, with aggregations forming and persisting over ca. 12 days prior to full moon between January and May. FSA formation coincided with seasonally low and relatively stable seawater temperatures. Some males frequented the FSA site during each aggregation month over two consecutive years. Conversely, most females were present at the FSA during only a single aggregation period, with the month of visitation consistent among years. Nearly two-thirds of tagged fish were relocated or recaptured within 11 km of the aggregation site, with a maximum detected distance of 26 km and a minimum estimated catchment area of 100–175 km2. Findings highlight the need for a combined approach to management that prohibits the capture and sale of reproductive adults and protects both spawning sites and common reproductive migratory corridors during aggregation periods. |
| first_indexed | 2025-11-14T08:42:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-35619 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:42:07Z |
| publishDate | 2012 |
| publisher | Springer Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-356192017-09-13T15:26:49Z Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775) Rhodes, K. McIlwain, Jennifer Joseph, E. Nemeth, R. Acoustic telemetry Epinephelidae Marine protected areas Micronesia Spawning aggregations Reproductive migratory corridors The brown-marbled grouper, Epinephelus fuscoguttatus, is a long-lived, late-maturing protogynous species listed as Near Threatened by the IUCN. In Pohnpei, Micronesia, reproductively active brown-marbled grouper were tagged with acoustic and spaghetti-type tags at a multi-species fish spawning aggregation (FSA) site to establish patterns of movement, residency and seasonality. Telemetry confirmed the use of common reproductive migratory corridors and significant sex-specific variations in residency at the FSA. Combined underwater visual census and telemetry data verified a 3-month peak aggregation period, with aggregations forming and persisting over ca. 12 days prior to full moon between January and May. FSA formation coincided with seasonally low and relatively stable seawater temperatures. Some males frequented the FSA site during each aggregation month over two consecutive years. Conversely, most females were present at the FSA during only a single aggregation period, with the month of visitation consistent among years. Nearly two-thirds of tagged fish were relocated or recaptured within 11 km of the aggregation site, with a maximum detected distance of 26 km and a minimum estimated catchment area of 100–175 km2. Findings highlight the need for a combined approach to management that prohibits the capture and sale of reproductive adults and protects both spawning sites and common reproductive migratory corridors during aggregation periods. 2012 Journal Article http://hdl.handle.net/20.500.11937/35619 10.1007/s00338-012-0875-2 Springer Verlag restricted |
| spellingShingle | Acoustic telemetry Epinephelidae Marine protected areas Micronesia Spawning aggregations Reproductive migratory corridors Rhodes, K. McIlwain, Jennifer Joseph, E. Nemeth, R. Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775) |
| title | Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775) |
| title_full | Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775) |
| title_fullStr | Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775) |
| title_full_unstemmed | Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775) |
| title_short | Reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, Epinephelus fuscoguttatus (Forsskål, 1775) |
| title_sort | reproductive movement, residency and fisheries vulnerability of brown-marbled grouper, epinephelus fuscoguttatus (forsskål, 1775) |
| topic | Acoustic telemetry Epinephelidae Marine protected areas Micronesia Spawning aggregations Reproductive migratory corridors |
| url | http://hdl.handle.net/20.500.11937/35619 |