Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile

An experiment under laboratory conditions was conducted to test the hypothesis that development and growth of copepodite stages in Calanus chilensis are temperature-dependent and not subject to food shortage in the upwelling area of the Humboldt Current, northern Chile. Field data obtained from June...

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Authors: Rodríguez-Villar, Luis, Escribano-V., Rubén, Irribarren, C.
Format: article
Status:Published version
Publication Date:1997
Country:Chile
Language:English
OAI Identifier:oai:repositorio.anid.cl:10533/197845
Online Access:https://hdl.handle.net/10533/197845
Access Level:Open access
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spelling Irribarren, C.Irribarren, C.Escribano-V., RubénRodríguez-Villar, Luis199710.1007/s002270050093https://hdl.handle.net/10533/197845http://purl.org/coar/access_right/c_abf2Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile289281Rodríguez-Villar, LuisEscribano-V., RubénIrribarren, C.Irribarren, C.2017-04-27T18:53:09Z2022-07-07T02:25:51Z2017-04-27T18:53:09Z2022-07-07T02:25:51Z1997An experiment under laboratory conditions was conducted to test the hypothesis that development and growth of copepodite stages in Calanus chilensis are temperature-dependent and not subject to food shortage in the upwelling area of the Humboldt Current, northern Chile. Field data obtained from June 1994 to May 1995 in Bahia Mejillones (23 degrees S) were used to define four combinations of temperature and food under which copepodites were reared from Stage CIII to adulthood. The high temperature was 18.1 degrees C and the low temperature 13.1 degrees C, whereas the high food level was in the range of 6.8 to 24.8 mu g 1(-1) chlorophyll a and the low level 1.0 to 6.8 mu g 1(-1) chlorophyll a. As food a mixture of three unknown species of phytoflagellates and the diatom Navicula cryptocephala was used. This phytoplankton was initially obtained from the same sampling sites as copepods and kept in f/2 media at stable levels and composition throughout the experiment. The development rate (1/t), estimated from the time (t) elapsing between Stage CIV and adult, was significantly affected by both temperature and food, although low-food effects were much more remarkable. Low-food conditions also significantly reduced body length and ''structural'' (lipid-discounted) body mass at adulthood, while temperature only affected body length. The weight-specific growth rate was also affected by food and temperature, but again food effects were much more drastic. The results indicate that C. chilensis is a highly sensitive species to lack of food, and is possibly subject to food shortage during its annual cycle in the coastal upwelling area of northern Chile. Food limitation may help explain the seasonal pattern of adult size reported by previous studies in the area and the lack of consistence between the number of generations predictable from a temperature-dependent model and that observed in the field during the annual cycle.034FONDEF00FONDEF1281432-1793D91S1035D91S1035virtual::30480-1WOS:A1997XB56300013WOS:A1997XB563000130076-4442https://hdl.handle.net/10533/197845instname: Conicytreponame: Repositorio Digital RI2.0instname: Conicytreponame: Repositorio Digital RI2.010.1007/s002270050093info:eu-repo/grantAgreement/Fondef/D91S1035info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477https://doi.org/10.1007/s002270050093info:eu-repo/semantics/openAccessInfluence of food quantity and temperature on development and growth of calanus chilensis from northern chileMARINE BIOLOGYMAR BIOLArticuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionengArticulohttps://hdl.handle.net/10533/197845FONDEFhttp://purl.org/coar/resource_type/c_2df8fbb1359f1cd8-de57-4ff7-bc61-723398ba9f21virtual::30480-1359f1cd8-de57-4ff7-bc61-723398ba9f21virtual::30480-110533/197845oai:repositorio.anid.cl:10533/1978452023-07-24 18:30:49.939https://repositorio.anid.clRepositorio ANIDaletelier@anid.cl
dc.title.none.fl_str_mv Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
dc.title.journal.none.fl_str_mv MARINE BIOLOGY
dc.title.journalabbreviation.none.fl_str_mv MAR BIOL
title Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
spellingShingle Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
Rodríguez-Villar, Luis
title_short Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
title_full Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
title_fullStr Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
title_full_unstemmed Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
title_sort Influence of food quantity and temperature on development and growth of calanus chilensis from northern chile
dc.creator.none.fl_str_mv Rodríguez-Villar, Luis
Escribano-V., Rubén
Irribarren, C.
Irribarren, C.
author Rodríguez-Villar, Luis
author_facet Rodríguez-Villar, Luis
Escribano-V., Rubén
Irribarren, C.
author_role author
author2 Escribano-V., Rubén
Irribarren, C.
author2_role author
author
description An experiment under laboratory conditions was conducted to test the hypothesis that development and growth of copepodite stages in Calanus chilensis are temperature-dependent and not subject to food shortage in the upwelling area of the Humboldt Current, northern Chile. Field data obtained from June 1994 to May 1995 in Bahia Mejillones (23 degrees S) were used to define four combinations of temperature and food under which copepodites were reared from Stage CIII to adulthood. The high temperature was 18.1 degrees C and the low temperature 13.1 degrees C, whereas the high food level was in the range of 6.8 to 24.8 mu g 1(-1) chlorophyll a and the low level 1.0 to 6.8 mu g 1(-1) chlorophyll a. As food a mixture of three unknown species of phytoflagellates and the diatom Navicula cryptocephala was used. This phytoplankton was initially obtained from the same sampling sites as copepods and kept in f/2 media at stable levels and composition throughout the experiment. The development rate (1/t), estimated from the time (t) elapsing between Stage CIV and adult, was significantly affected by both temperature and food, although low-food effects were much more remarkable. Low-food conditions also significantly reduced body length and ''structural'' (lipid-discounted) body mass at adulthood, while temperature only affected body length. The weight-specific growth rate was also affected by food and temperature, but again food effects were much more drastic. The results indicate that C. chilensis is a highly sensitive species to lack of food, and is possibly subject to food shortage during its annual cycle in the coastal upwelling area of northern Chile. Food limitation may help explain the seasonal pattern of adult size reported by previous studies in the area and the lack of consistence between the number of generations predictable from a temperature-dependent model and that observed in the field during the annual cycle.
publishDate 1997
dc.date.issued.none.fl_str_mv 1997
dc.date.accessioned.none.fl_str_mv 2017-04-27T18:53:09Z
2022-07-07T02:25:51Z
dc.date.available.none.fl_str_mv 2017-04-27T18:53:09Z
2022-07-07T02:25:51Z
dc.type.none.fl_str_mv Articulo
dc.type.driver.none.fl_str_mv info:eu-repo/semantics/article
dc.type.openaire.none.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.eissn.none.fl_str_mv 1432-1793
dc.identifier.folio.none.fl_str_mv D91S1035
D91S1035
dc.identifier.idwos.none.fl_str_mv WOS:A1997XB56300013
dc.identifier.isi.none.fl_str_mv WOS:A1997XB56300013
dc.identifier.issn.none.fl_str_mv 0076-4442
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/197845
identifier_str_mv 1432-1793
D91S1035
WOS:A1997XB56300013
0076-4442
url https://hdl.handle.net/10533/197845
dc.language.*.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv instname: Conicyt
reponame: Repositorio Digital RI2.0
instname: Conicyt
reponame: Repositorio Digital RI2.0
dc.relation.doi.none.fl_str_mv 10.1007/s002270050093
dc.relation.projectid.none.fl_str_mv info:eu-repo/grantAgreement/Fondef/D91S1035
dc.relation.set.none.fl_str_mv info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
dc.relation.uri.none.fl_str_mv https://doi.org/10.1007/s002270050093
dc.rights.driver.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
repository.name.fl_str_mv Repositorio ANID
repository.mail.fl_str_mv aletelier@anid.cl
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