Demographic characteristics of exploited tropical lutjanids: a comparative analysis
Demographic parameters from seven exploited coral reef lutjanid species were compared as a case study of the implications of intrafamily variation in life histories formultispecies harvest management. Modal lengths varied by 4 cm among four species (Lutjanus fulviflamma, L. vitta, L. carponotatus, L. adetii), which were at least 6 cm smaller than the modal lengths of the largest species (L. gibbus, Symphorus nematophorus, Aprion virescens). Modal ages, indicating ages of full selection to fishing gear, were 10 years or less for all species, but maximum ages ranged from12 (L. gibbus) to 36 years (S. nematophorus). Each species had a unique growth pattern, with differences in length-at-age and mean asymptotic fork length (L∞), but smaller species generally grew fast during the first 1–2 years of life and larger species grew more slowly over a longer period. Total mortality rates varied among species; L. gibbus had the highest mortality and L. fulviflamma, thelowest mortality. The variability in life history strategies of these tropical lutjanids makes generalizations about lutjanid life histories difficult, but the fact that all seven had characteristics that would make them particularly vulnerable to fishing indicates thatharvest of tropical lutjanids should be managed with caution.
Main Authors: | , , , , , , , |
---|---|
Format: | article biblioteca |
Language: | English |
Published: |
2010
|
Subjects: | Biology, Ecology, Fisheries, |
Online Access: | http://hdl.handle.net/1834/25387 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-aquadocs-1834-25387 |
---|---|
record_format |
koha |
spelling |
dig-aquadocs-1834-253872021-06-26T05:55:08Z Demographic characteristics of exploited tropical lutjanids: a comparative analysis Heupel, Michelle R. Williams, Ashley A. Welch, David J. Davies, Campbell R. Penny, Ann Kritzer, Jacob P. Marriott, Ross J. Mapstone, Bruce D. Biology Ecology Fisheries Demographic parameters from seven exploited coral reef lutjanid species were compared as a case study of the implications of intrafamily variation in life histories formultispecies harvest management. Modal lengths varied by 4 cm among four species (Lutjanus fulviflamma, L. vitta, L. carponotatus, L. adetii), which were at least 6 cm smaller than the modal lengths of the largest species (L. gibbus, Symphorus nematophorus, Aprion virescens). Modal ages, indicating ages of full selection to fishing gear, were 10 years or less for all species, but maximum ages ranged from12 (L. gibbus) to 36 years (S. nematophorus). Each species had a unique growth pattern, with differences in length-at-age and mean asymptotic fork length (L∞), but smaller species generally grew fast during the first 1–2 years of life and larger species grew more slowly over a longer period. Total mortality rates varied among species; L. gibbus had the highest mortality and L. fulviflamma, thelowest mortality. The variability in life history strategies of these tropical lutjanids makes generalizations about lutjanid life histories difficult, but the fact that all seven had characteristics that would make them particularly vulnerable to fishing indicates thatharvest of tropical lutjanids should be managed with caution. 2021-06-24T16:20:01Z 2021-06-24T16:20:01Z 2010 article TRUE 0090-0656 http://hdl.handle.net/1834/25387 en http://fishbull.noaa.gov/1084/heupel.pdf application/pdf application/pdf 420-432 http://aquaticcommons.org/id/eprint/8738 403 2012-06-07 14:45:50 8738 United States National Marine Fisheries Service |
institution |
UNESCO |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-aquadocs |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Repositorio AQUADOCS |
language |
English |
topic |
Biology Ecology Fisheries Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Biology Ecology Fisheries Heupel, Michelle R. Williams, Ashley A. Welch, David J. Davies, Campbell R. Penny, Ann Kritzer, Jacob P. Marriott, Ross J. Mapstone, Bruce D. Demographic characteristics of exploited tropical lutjanids: a comparative analysis |
description |
Demographic parameters from seven exploited coral reef lutjanid species were compared as a case study of the implications of intrafamily variation in life histories formultispecies harvest management. Modal lengths varied by 4 cm among four species (Lutjanus fulviflamma, L. vitta, L. carponotatus, L. adetii), which were at least 6 cm smaller than the modal lengths of the largest species (L. gibbus, Symphorus nematophorus, Aprion virescens). Modal ages, indicating ages of full selection to fishing gear, were 10 years or less for all species, but maximum ages ranged from12 (L. gibbus) to 36 years (S. nematophorus). Each species had a unique growth pattern, with differences in length-at-age and mean asymptotic fork length (L∞), but smaller species generally grew fast during the first 1–2 years of life and larger species grew more slowly over a longer period. Total mortality rates varied among species; L. gibbus had the highest mortality and L. fulviflamma, thelowest mortality. The variability in life history strategies of these tropical lutjanids makes generalizations about lutjanid life histories difficult, but the fact that all seven had characteristics that would make them particularly vulnerable to fishing indicates thatharvest of tropical lutjanids should be managed with caution. |
format |
article |
topic_facet |
Biology Ecology Fisheries |
author |
Heupel, Michelle R. Williams, Ashley A. Welch, David J. Davies, Campbell R. Penny, Ann Kritzer, Jacob P. Marriott, Ross J. Mapstone, Bruce D. |
author_facet |
Heupel, Michelle R. Williams, Ashley A. Welch, David J. Davies, Campbell R. Penny, Ann Kritzer, Jacob P. Marriott, Ross J. Mapstone, Bruce D. |
author_sort |
Heupel, Michelle R. |
title |
Demographic characteristics of exploited tropical lutjanids: a comparative analysis |
title_short |
Demographic characteristics of exploited tropical lutjanids: a comparative analysis |
title_full |
Demographic characteristics of exploited tropical lutjanids: a comparative analysis |
title_fullStr |
Demographic characteristics of exploited tropical lutjanids: a comparative analysis |
title_full_unstemmed |
Demographic characteristics of exploited tropical lutjanids: a comparative analysis |
title_sort |
demographic characteristics of exploited tropical lutjanids: a comparative analysis |
publishDate |
2010 |
url |
http://hdl.handle.net/1834/25387 |
work_keys_str_mv |
AT heupelmicheller demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis AT williamsashleya demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis AT welchdavidj demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis AT daviescampbellr demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis AT pennyann demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis AT kritzerjacobp demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis AT marriottrossj demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis AT mapstonebruced demographiccharacteristicsofexploitedtropicallutjanidsacomparativeanalysis |
_version_ |
1756078023005700096 |