Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010

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Constant presence of Jack mackerel Trachurus murphyilarvae in the Peruvian sea between 1966 and 2010 was confirmed by an analysis of their spatial and temporal variability. In general, there is a slight positive trend in abundance of Jack mackerelT. murphyilarvae, with noticeable changes in their sp...

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Detalles Bibliográficos
Autores: Ayón, Patricia, Correa, Jonathan
Formato: artículo
Fecha de Publicación:2013
Institución:Universidad Nacional Mayor de San Marcos
Repositorio:Revista UNMSM - Revista Peruana de Biología
Lenguaje:español
OAI Identifier:oai:ojs.csi.unmsm:article/2623
Enlace del recurso:https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/2623
Nivel de acceso:acceso abierto
Materia:larvae
Jack mackerel
larval distribution
Peruvian sea
pelagic
Peruvian fishery
larvas
jurel
distribución de larvas
mar peruano
recursos pelágicos
pesquería peruana
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spelling Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010Variabilidad espacial y temporal de larvas de jurel Trachurus murphyien el Perú entre 1966 –2010Ayón, PatriciaCorrea, JonathanlarvaeJack mackerellarval distributionPeruvian seapelagicPeruvian fisherylarvasjureldistribución de larvasmar peruanorecursos pelágicospesquería peruanaConstant presence of Jack mackerel Trachurus murphyilarvae in the Peruvian sea between 1966 and 2010 was confirmed by an analysis of their spatial and temporal variability. In general, there is a slight positive trend in abundance of Jack mackerelT. murphyilarvae, with noticeable changes in their spatial distribution and high interannual variability. High abundance of larvae is observed in some years, which are usually followed by a longer sequence of poor abundance years. Yearly averages varied between 3 and 79 larvae/m 2 . The spatial distribution of average larvae density showed three notorious periods along time: the first between 1970 and 1979 with higher larvae densities south of 14°S; the second between 1980 and 1999 with the higher densities to the north of 14°S; and the third between 2000 and 2010 with higher densities south of 18°S. The displacement of the centers of gravity of the spatial distribution marked three noticeable periods: between 1966 and 1978 were more coastal, south of 14°S; between 1979 and 1994 more oceanic and north of 14°S; and between 1995 and 2010 which were at an intermediate position. The relationship of larvae density with oceanographic variables as well as with the distribution of adult and juvenile Jack mackerel T. murphyiare discussed, stressing the observation that there is a main center of permanent spawning activity of this species in Peruvian watersEl análisis espacial y temporal de larvas de jurel Trachurus murphyien el mar peruano entre los años 1966 y 2010 confirma su presencia constante durante todo el periodo estudiado. En general, en este periodo la abundancia de larvas de jurel T. murphyimuestra una tendencia ligeramente ascendente destacándose cambios en la distribución espacial y una alta variabilidad interanual, con cortos periodos de alta abundancia promedio, intercalados con periodos más prolongados y de baja abundancia. El promedio anual estimado varió entre 3 y 79 larvas/ m2 . La distribución espacial presentó tres periodos importantes: uno con mayores densidades de larvas al sur de los 14°S, entre 1970 y 1979; cambió hacia el norte de esta latitud, entre 1980 y 1999; y otro de mayor densidad al sur de los 18°S, en el último periodo 2000 – 2010. Los centros de gravedad de la distribución de larvas presentaron tres periodos muy notorios: fueron más costeros hacia el sur de los 14°S, entre 1966 y1978; más oceánicos y al norte de los 14°S, entre 1979 y 1994; y con una posición intermedia entre 1995 – 2010. Se discute la relación entre la distribución de las larvas con las variables oceanográficas y la distribución de T. murphyiadultos y juveniles, además se destaca que el mar del Perú es un centro principal y permanente de actividad reproductiva de esta especie.Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas2013-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/262310.15381/rpb.v20i1.2623Revista Peruana de Biología; Vol 20 No 1 (2013); 083-086Revista Peruana de Biología; Vol. 20 Núm. 1 (2013); 083-0861727-99331561-0837reponame:Revista UNMSM - Revista Peruana de Biologíainstname:Universidad Nacional Mayor de San Marcosinstacron:UNMSMspahttps://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/2623/2296Derechos de autor 2013 Patricia Ayón, Jonathan Correahttp://creativecommons.org/licenses/by-nc-sa/4.0info:eu-repo/semantics/openAccess2021-06-01T17:48:02Zmail@mail.com -
dc.title.none.fl_str_mv Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
Variabilidad espacial y temporal de larvas de jurel Trachurus murphyien el Perú entre 1966 –2010
title Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
spellingShingle Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
Ayón, Patricia
larvae
Jack mackerel
larval distribution
Peruvian sea
pelagic
Peruvian fishery
larvas
jurel
distribución de larvas
mar peruano
recursos pelágicos
pesquería peruana
title_short Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
title_full Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
title_fullStr Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
title_full_unstemmed Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
title_sort Spatial and temporal variability of Jack mackerel Trachurus murphyilarvae in Peru between 1966 –2010
dc.creator.none.fl_str_mv Ayón, Patricia
Correa, Jonathan
author Ayón, Patricia
author_facet Ayón, Patricia
Correa, Jonathan
author_role author
author2 Correa, Jonathan
author2_role author
dc.subject.none.fl_str_mv larvae
Jack mackerel
larval distribution
Peruvian sea
pelagic
Peruvian fishery
larvas
jurel
distribución de larvas
mar peruano
recursos pelágicos
pesquería peruana
topic larvae
Jack mackerel
larval distribution
Peruvian sea
pelagic
Peruvian fishery
larvas
jurel
distribución de larvas
mar peruano
recursos pelágicos
pesquería peruana
dc.description.none.fl_txt_mv Constant presence of Jack mackerel Trachurus murphyilarvae in the Peruvian sea between 1966 and 2010 was confirmed by an analysis of their spatial and temporal variability. In general, there is a slight positive trend in abundance of Jack mackerelT. murphyilarvae, with noticeable changes in their spatial distribution and high interannual variability. High abundance of larvae is observed in some years, which are usually followed by a longer sequence of poor abundance years. Yearly averages varied between 3 and 79 larvae/m 2 . The spatial distribution of average larvae density showed three notorious periods along time: the first between 1970 and 1979 with higher larvae densities south of 14°S; the second between 1980 and 1999 with the higher densities to the north of 14°S; and the third between 2000 and 2010 with higher densities south of 18°S. The displacement of the centers of gravity of the spatial distribution marked three noticeable periods: between 1966 and 1978 were more coastal, south of 14°S; between 1979 and 1994 more oceanic and north of 14°S; and between 1995 and 2010 which were at an intermediate position. The relationship of larvae density with oceanographic variables as well as with the distribution of adult and juvenile Jack mackerel T. murphyiare discussed, stressing the observation that there is a main center of permanent spawning activity of this species in Peruvian waters
El análisis espacial y temporal de larvas de jurel Trachurus murphyien el mar peruano entre los años 1966 y 2010 confirma su presencia constante durante todo el periodo estudiado. En general, en este periodo la abundancia de larvas de jurel T. murphyimuestra una tendencia ligeramente ascendente destacándose cambios en la distribución espacial y una alta variabilidad interanual, con cortos periodos de alta abundancia promedio, intercalados con periodos más prolongados y de baja abundancia. El promedio anual estimado varió entre 3 y 79 larvas/ m2 . La distribución espacial presentó tres periodos importantes: uno con mayores densidades de larvas al sur de los 14°S, entre 1970 y 1979; cambió hacia el norte de esta latitud, entre 1980 y 1999; y otro de mayor densidad al sur de los 18°S, en el último periodo 2000 – 2010. Los centros de gravedad de la distribución de larvas presentaron tres periodos muy notorios: fueron más costeros hacia el sur de los 14°S, entre 1966 y1978; más oceánicos y al norte de los 14°S, entre 1979 y 1994; y con una posición intermedia entre 1995 – 2010. Se discute la relación entre la distribución de las larvas con las variables oceanográficas y la distribución de T. murphyiadultos y juveniles, además se destaca que el mar del Perú es un centro principal y permanente de actividad reproductiva de esta especie.
description Constant presence of Jack mackerel Trachurus murphyilarvae in the Peruvian sea between 1966 and 2010 was confirmed by an analysis of their spatial and temporal variability. In general, there is a slight positive trend in abundance of Jack mackerelT. murphyilarvae, with noticeable changes in their spatial distribution and high interannual variability. High abundance of larvae is observed in some years, which are usually followed by a longer sequence of poor abundance years. Yearly averages varied between 3 and 79 larvae/m 2 . The spatial distribution of average larvae density showed three notorious periods along time: the first between 1970 and 1979 with higher larvae densities south of 14°S; the second between 1980 and 1999 with the higher densities to the north of 14°S; and the third between 2000 and 2010 with higher densities south of 18°S. The displacement of the centers of gravity of the spatial distribution marked three noticeable periods: between 1966 and 1978 were more coastal, south of 14°S; between 1979 and 1994 more oceanic and north of 14°S; and between 1995 and 2010 which were at an intermediate position. The relationship of larvae density with oceanographic variables as well as with the distribution of adult and juvenile Jack mackerel T. murphyiare discussed, stressing the observation that there is a main center of permanent spawning activity of this species in Peruvian waters
publishDate 2013
dc.date.none.fl_str_mv 2013-04-15
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/2623
10.15381/rpb.v20i1.2623
url https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/2623
identifier_str_mv 10.15381/rpb.v20i1.2623
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/2623/2296
dc.rights.none.fl_str_mv Derechos de autor 2013 Patricia Ayón, Jonathan Correa
http://creativecommons.org/licenses/by-nc-sa/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Derechos de autor 2013 Patricia Ayón, Jonathan Correa
http://creativecommons.org/licenses/by-nc-sa/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas
publisher.none.fl_str_mv Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas
dc.source.none.fl_str_mv Revista Peruana de Biología; Vol 20 No 1 (2013); 083-086
Revista Peruana de Biología; Vol. 20 Núm. 1 (2013); 083-086
1727-9933
1561-0837
reponame:Revista UNMSM - Revista Peruana de Biología
instname:Universidad Nacional Mayor de San Marcos
instacron:UNMSM
reponame_str Revista UNMSM - Revista Peruana de Biología
collection Revista UNMSM - Revista Peruana de Biología
instname_str Universidad Nacional Mayor de San Marcos
instacron_str UNMSM
institution UNMSM
repository.name.fl_str_mv -
repository.mail.fl_str_mv mail@mail.com
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score 13.924177
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