“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842017000400840 |
Resumo: | Abstract Cladocerans occupy an important position among the bacterial consumers in freshwater food webs, being relatively non-selective filter feeders that can exert a strong impact on microbial populations. We evaluated the bacterivory potential of three cladocerans species of subtropical and tropical occurrence (Ceriodaphnia silvestrii, Daphnia gessneri and Ceriodaphnia cornuta) at different life stages, by scanning electron microscopy (SEM) and by the quantification of their bacterial consumption rates using fluorescently labeled bacteria (FLB). All species showed filter mesh sizes sufficiently narrow to retain bacteria. The largest distance between setules was found in primiparous C. cornuta, and the smallest in neonate D. gessneri. The lowest ingestion (IR) and removal (RR) rates were observed in primiparous C. silvestrii and the highest values were observed in adults of D. gessneri. We conclude that bacteria may be considered an important food supplement, particularly for neonates who presented smaller intersetular distances and higher filtration rates than the other life stages. |
id |
IIE-1_c0f4325a1eb933211a0dae4285b23cc7 |
---|---|
oai_identifier_str |
oai:scielo:S1519-69842017000400840 |
network_acronym_str |
IIE-1 |
network_name_str |
Brazilian Journal of Biology |
repository_id_str |
|
spelling |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regionsSEMbacterivoryFLBDaphniaCeriodaphniaAbstract Cladocerans occupy an important position among the bacterial consumers in freshwater food webs, being relatively non-selective filter feeders that can exert a strong impact on microbial populations. We evaluated the bacterivory potential of three cladocerans species of subtropical and tropical occurrence (Ceriodaphnia silvestrii, Daphnia gessneri and Ceriodaphnia cornuta) at different life stages, by scanning electron microscopy (SEM) and by the quantification of their bacterial consumption rates using fluorescently labeled bacteria (FLB). All species showed filter mesh sizes sufficiently narrow to retain bacteria. The largest distance between setules was found in primiparous C. cornuta, and the smallest in neonate D. gessneri. The lowest ingestion (IR) and removal (RR) rates were observed in primiparous C. silvestrii and the highest values were observed in adults of D. gessneri. We conclude that bacteria may be considered an important food supplement, particularly for neonates who presented smaller intersetular distances and higher filtration rates than the other life stages.Instituto Internacional de Ecologia2017-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842017000400840Brazilian Journal of Biology v.77 n.4 2017reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/1519-6984.02716info:eu-repo/semantics/openAccessHayashi-Martins,L. H.Mansano,A. S.Hisatugo,K. F.Rocha,O.Seleghim,M. H. R.eng2017-09-29T00:00:00Zoai:scielo:S1519-69842017000400840Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2017-09-29T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false |
dc.title.none.fl_str_mv |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions |
title |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions |
spellingShingle |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions Hayashi-Martins,L. H. SEM bacterivory FLB Daphnia Ceriodaphnia |
title_short |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions |
title_full |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions |
title_fullStr |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions |
title_full_unstemmed |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions |
title_sort |
“In vitro” evaluation of the bacterivore potential of three Cladoceran species occurring in tropical and subtropical regions |
author |
Hayashi-Martins,L. H. |
author_facet |
Hayashi-Martins,L. H. Mansano,A. S. Hisatugo,K. F. Rocha,O. Seleghim,M. H. R. |
author_role |
author |
author2 |
Mansano,A. S. Hisatugo,K. F. Rocha,O. Seleghim,M. H. R. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Hayashi-Martins,L. H. Mansano,A. S. Hisatugo,K. F. Rocha,O. Seleghim,M. H. R. |
dc.subject.por.fl_str_mv |
SEM bacterivory FLB Daphnia Ceriodaphnia |
topic |
SEM bacterivory FLB Daphnia Ceriodaphnia |
description |
Abstract Cladocerans occupy an important position among the bacterial consumers in freshwater food webs, being relatively non-selective filter feeders that can exert a strong impact on microbial populations. We evaluated the bacterivory potential of three cladocerans species of subtropical and tropical occurrence (Ceriodaphnia silvestrii, Daphnia gessneri and Ceriodaphnia cornuta) at different life stages, by scanning electron microscopy (SEM) and by the quantification of their bacterial consumption rates using fluorescently labeled bacteria (FLB). All species showed filter mesh sizes sufficiently narrow to retain bacteria. The largest distance between setules was found in primiparous C. cornuta, and the smallest in neonate D. gessneri. The lowest ingestion (IR) and removal (RR) rates were observed in primiparous C. silvestrii and the highest values were observed in adults of D. gessneri. We conclude that bacteria may be considered an important food supplement, particularly for neonates who presented smaller intersetular distances and higher filtration rates than the other life stages. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11-01 |
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=S1519-69842017000400840 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842017000400840 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1519-6984.02716 |
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 |
Instituto Internacional de Ecologia |
publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Biology v.77 n.4 2017 reponame:Brazilian Journal of Biology instname:Instituto Internacional de Ecologia (IIE) instacron:IIE |
instname_str |
Instituto Internacional de Ecologia (IIE) |
instacron_str |
IIE |
institution |
IIE |
reponame_str |
Brazilian Journal of Biology |
collection |
Brazilian Journal of Biology |
repository.name.fl_str_mv |
Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE) |
repository.mail.fl_str_mv |
bjb@bjb.com.br||bjb@bjb.com.br |
_version_ |
1752129884146106368 |