| dc.creator | Stephen, Jessica A. | |
| dc.creator | Harris, Patrick J. | |
| dc.creator | Reichert, Marcel J. M. | |
| dc.date.accessioned | 2013-08-22T14:22:10Z | |
| dc.date.available | 2013-08-22T14:22:10Z | |
| dc.date.issued | 2011 | |
| dc.identifier.uri | http://hdl.handle.net/10827/10548 | |
| dc.description | Commercial fisheries that are managed with minimum size limits protect small fish of all ages and may affect size-selective mortality by the differential removal of fast growing fish. This differential removal may decrease the average size at age, maturation, or sexual transition of the exploited population. When fishery-independent data are
not available, a comparison of life history parameters of landed with those of discarded fish (by regulation) will indicate if differential mortality is occurring with the capture of young but large fish (fast growing phenotypes). Indications of this differential
size-selective mortality would include the following: the discarded portion
of the target fish would have similar age ranges but smaller sizes at age, maturation, and sexual transition as that of landed fish. We examined three species with minimum size limits but different exploitation histories. The known heavily exploited
species (Rhomboplites aurorubens [vermilion snapper] and Pagrus pagrus [red porgy]) show signs of this differential mortality. Their landed catch includes many young, large
fish, whereas discarded fish had a similar age range and mean ages but smaller sizes at age than the landed fish. The unknown exploited species, Mycteroperca phenax (scamp), showed no signs of differential mortality due to size-selective fishing. Landed catch consisted of old, large fish and discarded scamp had little overlap in age ranges, had significantly different mean ages, and only small differences in size at age when compared to comparable data for landed fish. | |
| dc.format.medium | Document | |
| dc.language | English | |
| dc.publisher | South Carolina State Library | |
| dc.relation.ispartof | South Carolina State Documents Depository | |
| dc.rights | Copyright status undetermined. For more information contact, South Carolina State Library, 1500 Senate Street, Columbia, South Carolina 29201. | |
| dc.subject | Fisheries | |
| dc.subject | Fishes | |
| dc.title | Comparison of life history parameters for landed and discarded fish captured off the southeastern United States | |
| dc.type | Text | |
| sd.specifications | This South Carolina State Document was either saved from a document available publicly online in PDF format or converted to PDF using Adobe Acrobat X Professional. | |
