Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years

Trophic ecology and diet of the little tunny (Euthynnus alletteratus) in central Colombian Caribbean is described. The little tunny is a pelagic top predator but not a voracious fish (trophic level of 4.49, Q/B of 10.8). Its diet seems impoverished when compared with a study conducted in 1986 in the...

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Autores principales:	García,Camilo B, Posada,Camila
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2013
Materias:	trophic ecology little tunny Euthynnus alletteratus Colombian Caribbean
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000300021
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spelling	oai:scielo:S0718-560X20130003000212013-10-15Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 yearsGarcía,Camilo BPosada,Camila trophic ecology little tunny Euthynnus alletteratus Colombian Caribbean Trophic ecology and diet of the little tunny (Euthynnus alletteratus) in central Colombian Caribbean is described. The little tunny is a pelagic top predator but not a voracious fish (trophic level of 4.49, Q/B of 10.8). Its diet seems impoverished when compared with a study conducted in 1986 in the same general location and with studies in other locations. Moreover, the main diet item has changed, new items have appeared and other have disappeared in the time interval between 1986 and the present study (2003/2004, 18 years). Lack of monitoring of pelagic fish populations precludes the identification of tendencies but a regime change hypothesis is worth investigating. The little tunny eats more in the dry season than in the rainy season and diet items change with seasons in line with findings of other studies that signal correlations between seasons and diet. Likewise, local little tunny eats more in the afternoon than in the morning which suggests it eats in daylight not in the night contrary to what has been found in studies somewhere else.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.41 n.3 20132013-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000300021en103856/vol41-issue3-fulltext-21
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	trophic ecology little tunny Euthynnus alletteratus Colombian Caribbean
spellingShingle	trophic ecology little tunny Euthynnus alletteratus Colombian Caribbean García,Camilo B Posada,Camila Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years
description	Trophic ecology and diet of the little tunny (Euthynnus alletteratus) in central Colombian Caribbean is described. The little tunny is a pelagic top predator but not a voracious fish (trophic level of 4.49, Q/B of 10.8). Its diet seems impoverished when compared with a study conducted in 1986 in the same general location and with studies in other locations. Moreover, the main diet item has changed, new items have appeared and other have disappeared in the time interval between 1986 and the present study (2003/2004, 18 years). Lack of monitoring of pelagic fish populations precludes the identification of tendencies but a regime change hypothesis is worth investigating. The little tunny eats more in the dry season than in the rainy season and diet items change with seasons in line with findings of other studies that signal correlations between seasons and diet. Likewise, local little tunny eats more in the afternoon than in the morning which suggests it eats in daylight not in the night contrary to what has been found in studies somewhere else.
author	García,Camilo B Posada,Camila
author_facet	García,Camilo B Posada,Camila
author_sort	García,Camilo B
title	Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years
title_short	Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years
title_full	Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years
title_fullStr	Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years
title_full_unstemmed	Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years
title_sort	diet and feeding ecology of the little tunny, euthynnus alletteratus (pisces: scombridae) in the central colombian caribbean: changes in 18 years
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000300021
work_keys_str_mv	AT garciacamilob dietandfeedingecologyofthelittletunnyeuthynnusalletteratuspiscesscombridaeinthecentralcolombiancaribbeanchangesin18years AT posadacamila dietandfeedingecologyofthelittletunnyeuthynnusalletteratuspiscesscombridaeinthecentralcolombiancaribbeanchangesin18years
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Diet and feeding ecology of the little tunny, Euthynnus alletteratus (Pisces: Scombridae) in the central Colombian Caribbean: changes in 18 years

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