Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae)
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Iheringia. Série Zoologia |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100217 |
Resumo: | ABSTRACT A weight-length relationship was established for Corydoras paleatus (Jenyns, 1842) (Siluriformes, Callichthyidae) (n=596) from samples taken in November-December 2009 and March-April 2010, in Pinguela Lagoon (29°46'57"S; 50°11'16"W), Rio Grande do Sul, Brazil. The species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function: W = a1Lb1 ∙ (1 + eRsc ∙ (L-SCP))-1 + a2Lb2 ∙ [1 - (1 + eRsc ∙ (L-SCP))-1] ; where W is the expected weight for a specific length L, a1 and a2 are the proportionality coefficients for stanzas 1 and 2, b1 and b2 are the allometric coefficients for stanzas 1 and 2, Rsc is the stanza changing rate for the switch function and SCP is the stanza changing point for the switch function. The stanza changing point was estimated as 5.28 cm, corresponding with the length at first maturity for this species Lmat (5.29 cm). Our data suggest that a complex growth pattern can be in nature, and perhaps not often identified because trends are obscured by natural variability. |
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Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae)Allometric growthlength at first maturityreproductionsexual maturitylength-weight relationshipABSTRACT A weight-length relationship was established for Corydoras paleatus (Jenyns, 1842) (Siluriformes, Callichthyidae) (n=596) from samples taken in November-December 2009 and March-April 2010, in Pinguela Lagoon (29°46'57"S; 50°11'16"W), Rio Grande do Sul, Brazil. The species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function: W = a1Lb1 ∙ (1 + eRsc ∙ (L-SCP))-1 + a2Lb2 ∙ [1 - (1 + eRsc ∙ (L-SCP))-1] ; where W is the expected weight for a specific length L, a1 and a2 are the proportionality coefficients for stanzas 1 and 2, b1 and b2 are the allometric coefficients for stanzas 1 and 2, Rsc is the stanza changing rate for the switch function and SCP is the stanza changing point for the switch function. The stanza changing point was estimated as 5.28 cm, corresponding with the length at first maturity for this species Lmat (5.29 cm). Our data suggest that a complex growth pattern can be in nature, and perhaps not often identified because trends are obscured by natural variability.Museu de Ciências Naturais2016-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100217Iheringia. Série Zoologia v.106 2016reponame:Iheringia. Série Zoologiainstname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)instacron:FZB/RS10.1590/1678-4766e2016017info:eu-repo/semantics/openAccessBarradas,José R. S.Lermen,Isabel S.Larré,Gabriel G.Martins,Thaís P.Fontoura,Nelson F.eng2016-08-31T00:00:00Zoai:scielo:S0073-47212016000100217Revistahttp://www.scielo.br/iszPUBhttps://old.scielo.br/oai/scielo-oai.php||iheringia-zoo@fzb.rs.gov.br1678-47660073-4721opendoar:2016-08-31T00:00Iheringia. Série Zoologia - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)false |
dc.title.none.fl_str_mv |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) |
title |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) |
spellingShingle |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) Barradas,José R. S. Allometric growth length at first maturity reproduction sexual maturity length-weight relationship |
title_short |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) |
title_full |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) |
title_fullStr |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) |
title_full_unstemmed |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) |
title_sort |
Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae) |
author |
Barradas,José R. S. |
author_facet |
Barradas,José R. S. Lermen,Isabel S. Larré,Gabriel G. Martins,Thaís P. Fontoura,Nelson F. |
author_role |
author |
author2 |
Lermen,Isabel S. Larré,Gabriel G. Martins,Thaís P. Fontoura,Nelson F. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Barradas,José R. S. Lermen,Isabel S. Larré,Gabriel G. Martins,Thaís P. Fontoura,Nelson F. |
dc.subject.por.fl_str_mv |
Allometric growth length at first maturity reproduction sexual maturity length-weight relationship |
topic |
Allometric growth length at first maturity reproduction sexual maturity length-weight relationship |
description |
ABSTRACT A weight-length relationship was established for Corydoras paleatus (Jenyns, 1842) (Siluriformes, Callichthyidae) (n=596) from samples taken in November-December 2009 and March-April 2010, in Pinguela Lagoon (29°46'57"S; 50°11'16"W), Rio Grande do Sul, Brazil. The species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function: W = a1Lb1 ∙ (1 + eRsc ∙ (L-SCP))-1 + a2Lb2 ∙ [1 - (1 + eRsc ∙ (L-SCP))-1] ; where W is the expected weight for a specific length L, a1 and a2 are the proportionality coefficients for stanzas 1 and 2, b1 and b2 are the allometric coefficients for stanzas 1 and 2, Rsc is the stanza changing rate for the switch function and SCP is the stanza changing point for the switch function. The stanza changing point was estimated as 5.28 cm, corresponding with the length at first maturity for this species Lmat (5.29 cm). Our data suggest that a complex growth pattern can be in nature, and perhaps not often identified because trends are obscured by natural variability. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 |
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=S0073-47212016000100217 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100217 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-4766e2016017 |
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 |
Museu de Ciências Naturais |
publisher.none.fl_str_mv |
Museu de Ciências Naturais |
dc.source.none.fl_str_mv |
Iheringia. Série Zoologia v.106 2016 reponame:Iheringia. Série Zoologia instname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) instacron:FZB/RS |
instname_str |
Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) |
instacron_str |
FZB/RS |
institution |
FZB/RS |
reponame_str |
Iheringia. Série Zoologia |
collection |
Iheringia. Série Zoologia |
repository.name.fl_str_mv |
Iheringia. Série Zoologia - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) |
repository.mail.fl_str_mv |
||iheringia-zoo@fzb.rs.gov.br |
_version_ |
1754203965036167168 |