Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii

Detalhes bibliográficos
Autor(a) principal: Macêdo,Rafael Lacerda
Data de Publicação: 2021
Outros Autores: Pinheiro-Silva,Lorena, Puga,Adriana Lamanna, Klippel,Gabriel, Kozlowsky-Suzuki,Betina, Rocha,Odete, Branco,Christina Wyss Castelo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Acta Limnologica Brasiliensia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100722
Resumo: Abstract: Aim In this study, the effect of preservation time on total body length and dry weight of adult specimens of the neotropical cladoceran Ceriodaphnia silvestrii preserved with 4% formalin solution were examined. Methods The relationship between these variables was examined under increasing gradual time effects (i.e. 7, 30, and 60 days) after preservation using linear models and analysis of variance. Results Total body length did not statistically differ between fresh and preserved cladocerans at any preservation time, whereas dry weight was drastically reduced with increasing preservation time, with 15, 47 and 57% weight losses. Length-weight relationships were significantly and positively related in all treatments, though higher values of slope were found for fresh and 7 days samples. Conclusions We highlight that, for Ceriodaphnia silvestrii, the use of the formalin solution as a preservation fixative is not adequate when the major interest is biomass estimation. Also, we recommend that dry weight estimations from preserved samples should be done as soon as possible. Finally, considering the preservation losses and intra-specific composition of organisms, the application of correction factors is advised since preserved samples are important in the evaluation of long-term changes of biological communities.
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spelling Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestriibody lengthDaphnidaedry weightfresh weightsecondary productivityAbstract: Aim In this study, the effect of preservation time on total body length and dry weight of adult specimens of the neotropical cladoceran Ceriodaphnia silvestrii preserved with 4% formalin solution were examined. Methods The relationship between these variables was examined under increasing gradual time effects (i.e. 7, 30, and 60 days) after preservation using linear models and analysis of variance. Results Total body length did not statistically differ between fresh and preserved cladocerans at any preservation time, whereas dry weight was drastically reduced with increasing preservation time, with 15, 47 and 57% weight losses. Length-weight relationships were significantly and positively related in all treatments, though higher values of slope were found for fresh and 7 days samples. Conclusions We highlight that, for Ceriodaphnia silvestrii, the use of the formalin solution as a preservation fixative is not adequate when the major interest is biomass estimation. Also, we recommend that dry weight estimations from preserved samples should be done as soon as possible. Finally, considering the preservation losses and intra-specific composition of organisms, the application of correction factors is advised since preserved samples are important in the evaluation of long-term changes of biological communities.Associação Brasileira de Limnologia2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100722Acta Limnologica Brasiliensia v.33 2021reponame:Acta Limnologica Brasiliensia (Online)instname:Associação Brasileira de Limnologia (ABL)instacron:ABL10.1590/s2179-975x3321info:eu-repo/semantics/openAccessMacêdo,Rafael LacerdaPinheiro-Silva,LorenaPuga,Adriana LamannaKlippel,GabrielKozlowsky-Suzuki,BetinaRocha,OdeteBranco,Christina Wyss Casteloeng2021-11-11T00:00:00Zoai:scielo:S2179-975X2021000100722Revistahttp://www.ablimno.org.br/publiActa.phphttps://old.scielo.br/oai/scielo-oai.php||actalb@rc.unesp.br2179-975X0102-6712opendoar:2021-11-11T00:00Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL)false
dc.title.none.fl_str_mv Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
title Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
spellingShingle Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
Macêdo,Rafael Lacerda
body length
Daphnidae
dry weight
fresh weight
secondary productivity
title_short Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
title_full Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
title_fullStr Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
title_full_unstemmed Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
title_sort Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii
author Macêdo,Rafael Lacerda
author_facet Macêdo,Rafael Lacerda
Pinheiro-Silva,Lorena
Puga,Adriana Lamanna
Klippel,Gabriel
Kozlowsky-Suzuki,Betina
Rocha,Odete
Branco,Christina Wyss Castelo
author_role author
author2 Pinheiro-Silva,Lorena
Puga,Adriana Lamanna
Klippel,Gabriel
Kozlowsky-Suzuki,Betina
Rocha,Odete
Branco,Christina Wyss Castelo
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Macêdo,Rafael Lacerda
Pinheiro-Silva,Lorena
Puga,Adriana Lamanna
Klippel,Gabriel
Kozlowsky-Suzuki,Betina
Rocha,Odete
Branco,Christina Wyss Castelo
dc.subject.por.fl_str_mv body length
Daphnidae
dry weight
fresh weight
secondary productivity
topic body length
Daphnidae
dry weight
fresh weight
secondary productivity
description Abstract: Aim In this study, the effect of preservation time on total body length and dry weight of adult specimens of the neotropical cladoceran Ceriodaphnia silvestrii preserved with 4% formalin solution were examined. Methods The relationship between these variables was examined under increasing gradual time effects (i.e. 7, 30, and 60 days) after preservation using linear models and analysis of variance. Results Total body length did not statistically differ between fresh and preserved cladocerans at any preservation time, whereas dry weight was drastically reduced with increasing preservation time, with 15, 47 and 57% weight losses. Length-weight relationships were significantly and positively related in all treatments, though higher values of slope were found for fresh and 7 days samples. Conclusions We highlight that, for Ceriodaphnia silvestrii, the use of the formalin solution as a preservation fixative is not adequate when the major interest is biomass estimation. Also, we recommend that dry weight estimations from preserved samples should be done as soon as possible. Finally, considering the preservation losses and intra-specific composition of organisms, the application of correction factors is advised since preserved samples are important in the evaluation of long-term changes of biological communities.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100722
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2021000100722
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s2179-975x3321
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Limnologia
publisher.none.fl_str_mv Associação Brasileira de Limnologia
dc.source.none.fl_str_mv Acta Limnologica Brasiliensia v.33 2021
reponame:Acta Limnologica Brasiliensia (Online)
instname:Associação Brasileira de Limnologia (ABL)
instacron:ABL
instname_str Associação Brasileira de Limnologia (ABL)
instacron_str ABL
institution ABL
reponame_str Acta Limnologica Brasiliensia (Online)
collection Acta Limnologica Brasiliensia (Online)
repository.name.fl_str_mv Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL)
repository.mail.fl_str_mv ||actalb@rc.unesp.br
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