|
|||||
|
|
Sex-structured population dynamics of blue marlin Makaira nigricans in the Pacific Ocean |
|
| Authors: | Hui-Hua Lee Kevin R. Piner Michael G. Hinton Yi-Jay Chang Ai Kimoto Minoru Kanaiwa Nan-Jay Su William Walsh Chi-Lu Sun Gerard DiNardo |
| Affiliation: | 1. Joint Institute for Marine and Atmospheric Research, University of Hawaii, 1845 Wasp Blvd, Building 176, Honolulu, HI, 96818, USA 2. Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 8901 La Jolla Shores Dr., La Jolla, CA, 92037, USA 3. Inter-American Tropical Tuna Commission, 8901 La Jolla Shores Dr., La Jolla, CA, 92037, USA 4. National Research Institute of Far Seas Fisheries, 5-7-1 Orido, Shimizu, Shizuoka, 424-8633, Japan 5. Tokyo University of Agriculture, 196 Yasaka, Abashiri, Hokkaido, 099-2493, Japan 6. Institute of Oceanography, National Taiwan University, 1, Sect. 4, Roosevelt Road, Taipei, 106, Taiwan 7. Pacific Islands Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 1845 Wasp Blvd, Building 176, Honolulu, HI, 96818, USA |
| Abstract: | The population dynamics of the blue marlin Makaira nigricans stock in the Pacific Ocean were estimated for 1971–2011 using a fully integrated length-based, age-, and sex-structured model. Fishery-specific catch, size composition, and catch-per-unit of effort were used in the modeling as likelihood components. Estimated dynamics were consistent with a stock that is fully exploited and stable over the last several years. No significant trends in recruitment were noted; however, female blue marlin were estimated to make up a majority of the catch, and historical exploitation has disproportionately changed the age structure of females relative to males. This result is due to differences in assumed life history and estimated selectivity. Changes to important life history parameters that are responsible for the productivity of the stock would potentially change the interpretation of current stock status. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |