Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil
Age and growth parameters of cachara Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) (Siluriformes, Pimelodidae) (males and females) were estimated through the analysis of growth rings in spines of pectoral fins. Fish were collected from January to December 2007, in the area directly influenced by the Aproveitamento Múltiplo de Manso (APM Manso) and in the Cuiabá River (upper parts of the Pantanal). The maximum number of growth rings was seven for males, and eight, for females. The analysis of temporal variations in mean marginal increment showed that rings found in the spines were formed annually, in December. Growth rings were associated to spawning (in the study region from November to March) of the species. The growth curve in length was obtained by the von Bertalanffy model adjusted by the Ford-Walford transformation. The equations are: Ls = 72.7*[1-e-0.44(t+1.5974)] for males, and Ls = 84.5*[1-e-0.33(t+2.0943)] for females. The equations that describe the growth curve in weight are: Wt = 4991.61*[1-e-0.44 (t+1.5974] 2.70 for males and Wt = 7503.17*[1-e-0.33 (t+2.0943] 2.99 for females.
Main Authors: | , , , , , |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Museu de Ciências Naturais
2011
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300004 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
oai:scielo:S0073-47212011000300004 |
---|---|
record_format |
ojs |
spelling |
oai:scielo:S0073-472120110003000042012-03-08Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, BrazilFrancisco,Talitha M.Ambrósio,Angela MariaBalbi,Thiago JoséZuliani,Marina S.Okada,Edson K.Gomes,Luiz C. Growth rings pectoral fins von Bertalanffy model Ford-Walford Age and growth parameters of cachara Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) (Siluriformes, Pimelodidae) (males and females) were estimated through the analysis of growth rings in spines of pectoral fins. Fish were collected from January to December 2007, in the area directly influenced by the Aproveitamento Múltiplo de Manso (APM Manso) and in the Cuiabá River (upper parts of the Pantanal). The maximum number of growth rings was seven for males, and eight, for females. The analysis of temporal variations in mean marginal increment showed that rings found in the spines were formed annually, in December. Growth rings were associated to spawning (in the study region from November to March) of the species. The growth curve in length was obtained by the von Bertalanffy model adjusted by the Ford-Walford transformation. The equations are: Ls = 72.7*[1-e-0.44(t+1.5974)] for males, and Ls = 84.5*[1-e-0.33(t+2.0943)] for females. The equations that describe the growth curve in weight are: Wt = 4991.61*[1-e-0.44 (t+1.5974] 2.70 for males and Wt = 7503.17*[1-e-0.33 (t+2.0943] 2.99 for females.info:eu-repo/semantics/openAccessMuseu de Ciências NaturaisIheringia. Série Zoologia v.101 n.4 20112011-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300004en10.1590/S0073-47212011000300004 |
institution |
SCIELO |
collection |
OJS |
country |
Brasil |
countrycode |
BR |
component |
Revista |
access |
En linea |
databasecode |
rev-scielo-br |
tag |
revista |
region |
America del Sur |
libraryname |
SciELO |
language |
English |
format |
Digital |
author |
Francisco,Talitha M. Ambrósio,Angela Maria Balbi,Thiago José Zuliani,Marina S. Okada,Edson K. Gomes,Luiz C. |
spellingShingle |
Francisco,Talitha M. Ambrósio,Angela Maria Balbi,Thiago José Zuliani,Marina S. Okada,Edson K. Gomes,Luiz C. Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil |
author_facet |
Francisco,Talitha M. Ambrósio,Angela Maria Balbi,Thiago José Zuliani,Marina S. Okada,Edson K. Gomes,Luiz C. |
author_sort |
Francisco,Talitha M. |
title |
Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil |
title_short |
Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil |
title_full |
Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil |
title_fullStr |
Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil |
title_full_unstemmed |
Age and growth parameters of cachara Pseudoplastystoma reticulatum (Siluriformes, Pimelodidae) from the Cuiabá River, Brazil |
title_sort |
age and growth parameters of cachara pseudoplastystoma reticulatum (siluriformes, pimelodidae) from the cuiabá river, brazil |
description |
Age and growth parameters of cachara Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) (Siluriformes, Pimelodidae) (males and females) were estimated through the analysis of growth rings in spines of pectoral fins. Fish were collected from January to December 2007, in the area directly influenced by the Aproveitamento Múltiplo de Manso (APM Manso) and in the Cuiabá River (upper parts of the Pantanal). The maximum number of growth rings was seven for males, and eight, for females. The analysis of temporal variations in mean marginal increment showed that rings found in the spines were formed annually, in December. Growth rings were associated to spawning (in the study region from November to March) of the species. The growth curve in length was obtained by the von Bertalanffy model adjusted by the Ford-Walford transformation. The equations are: Ls = 72.7*[1-e-0.44(t+1.5974)] for males, and Ls = 84.5*[1-e-0.33(t+2.0943)] for females. The equations that describe the growth curve in weight are: Wt = 4991.61*[1-e-0.44 (t+1.5974] 2.70 for males and Wt = 7503.17*[1-e-0.33 (t+2.0943] 2.99 for females. |
publisher |
Museu de Ciências Naturais |
publishDate |
2011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300004 |
work_keys_str_mv |
AT franciscotalitham ageandgrowthparametersofcacharapseudoplastystomareticulatumsiluriformespimelodidaefromthecuiabariverbrazil AT ambrosioangelamaria ageandgrowthparametersofcacharapseudoplastystomareticulatumsiluriformespimelodidaefromthecuiabariverbrazil AT balbithiagojose ageandgrowthparametersofcacharapseudoplastystomareticulatumsiluriformespimelodidaefromthecuiabariverbrazil AT zulianimarinas ageandgrowthparametersofcacharapseudoplastystomareticulatumsiluriformespimelodidaefromthecuiabariverbrazil AT okadaedsonk ageandgrowthparametersofcacharapseudoplastystomareticulatumsiluriformespimelodidaefromthecuiabariverbrazil AT gomesluizc ageandgrowthparametersofcacharapseudoplastystomareticulatumsiluriformespimelodidaefromthecuiabariverbrazil |
_version_ |
1756382635573116928 |