Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/393 |
Resumo: | Experiments in the cultivation or ecological with fish larvae, invariably use the length and weight with parameters. Therefore, this experiment was accomplished with larvae of Lophiosilurus alexandri pacamã aiming at to determine some sources of mistakes sampling in the measurement of the size and of the weight of fish larvae. It was evaluated five possible sources of mistakes then. The first was the mistake in the measure of the lengths total and standard, due sharpness of two observers' measurement. The second the mistake in the measure of the lengths total and standard, due to the proportionate shrink for the fixative formomalin to 10%. The third party was the mistake due two forms of drying of the larvae in the obtaining of the biomass. The fourth experiment was on the influence of the size and of the grouping of the larvas in the obtaining of weights. Finally the last tested the alteration of the biomass due to the time of permanence of the larvae in the balance. The importance can be verified of to determine and to accomplish an sampling protocol for measurements of fish larvae. For they present size and weight reduced, a small variation in the condition of the mensure, it can alter the result significantly, because significant alterations were verified above for the tests referred. |
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Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393Fontes de erros na mensuração do comprimento e peso de larvas de peixes - DOI: 10.4025/actascibiolsci.v30i3.393samplingaccuracyfish larvaemeasurementsprecisionamostragemexatidãolarvas de peixesLophiosilurus alexandrimedidasprecisãoExperiments in the cultivation or ecological with fish larvae, invariably use the length and weight with parameters. Therefore, this experiment was accomplished with larvae of Lophiosilurus alexandri pacamã aiming at to determine some sources of mistakes sampling in the measurement of the size and of the weight of fish larvae. It was evaluated five possible sources of mistakes then. The first was the mistake in the measure of the lengths total and standard, due sharpness of two observers' measurement. The second the mistake in the measure of the lengths total and standard, due to the proportionate shrink for the fixative formomalin to 10%. The third party was the mistake due two forms of drying of the larvae in the obtaining of the biomass. The fourth experiment was on the influence of the size and of the grouping of the larvas in the obtaining of weights. Finally the last tested the alteration of the biomass due to the time of permanence of the larvae in the balance. The importance can be verified of to determine and to accomplish an sampling protocol for measurements of fish larvae. For they present size and weight reduced, a small variation in the condition of the mensure, it can alter the result significantly, because significant alterations were verified above for the tests referred.Trabalhos com larvas de peixes, sejam de cultivo ou ecológicos invariavelmente empregam o comprimento e o peso como parâmetros. Assim sendo, este experimento foi realizado com larvas de Lophiosilurus alexandri pacamã objetivando determinar algumas fontes de erros amostrais na medição do tamanho e do peso de larvas de peixes. Avaliou-se cinco possíveis fontes de erros. O primeiro foi o erro na medida dos comprimentos total e padrão, devido a acuidade de medição de dois observadores. O segundo, foi o erro na medida dos comprimentos total e padrão, devido ao encolhimento proporcionado pelo fixador formalina a 10%. O terceiro foi o erro devido a duas formas de secagem das larvas na obtenção da biomassa. O quarto experimento foi sobre a influência do tamanho e do agrupamento das larvas na obtenção de pesos. Por fim, o quinto teste observou a alteração da biomassa devido ao tempo de permanência das larvas na balança. Pôde-se verificar a importância de se determinar e cumprir um protocolo de amostagem para medições de larvas de peixes. Por apresentarem tamanho e peso reduzidos, uma pequena variação na condição da mensuração, pode alterar substancialmente o resultado, pois alterações significativas foram verificadas para os testes acima referidos.Universidade Estadual De Maringá2008-09-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/39310.4025/actascibiolsci.v30i3.393Acta Scientiarum. Biological Sciences; Vol 30 No 3 (2008); 245-251Acta Scientiarum. Biological Sciences; v. 30 n. 3 (2008); 245-2511807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/393/393Pedreira, Marcelo MattosSantos, José Claudio Epaminondas dosSampaio, Edson VieiraSilva, Janaina de LimaFerreira, Felipe Nilvaninfo:eu-repo/semantics/openAccess2022-11-23T17:32:55Zoai:periodicos.uem.br/ojs:article/393Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:32:55Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 Fontes de erros na mensuração do comprimento e peso de larvas de peixes - DOI: 10.4025/actascibiolsci.v30i3.393 |
title |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 |
spellingShingle |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 Pedreira, Marcelo Mattos sampling accuracy fish larvae measurements precision amostragem exatidão larvas de peixes Lophiosilurus alexandri medidas precisão |
title_short |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 |
title_full |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 |
title_fullStr |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 |
title_full_unstemmed |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 |
title_sort |
Origins of sample mistakes in the measure of the length and weight of fish larvae - DOI: 10.4025/actascibiolsci.v30i3.393 |
author |
Pedreira, Marcelo Mattos |
author_facet |
Pedreira, Marcelo Mattos Santos, José Claudio Epaminondas dos Sampaio, Edson Vieira Silva, Janaina de Lima Ferreira, Felipe Nilvan |
author_role |
author |
author2 |
Santos, José Claudio Epaminondas dos Sampaio, Edson Vieira Silva, Janaina de Lima Ferreira, Felipe Nilvan |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Pedreira, Marcelo Mattos Santos, José Claudio Epaminondas dos Sampaio, Edson Vieira Silva, Janaina de Lima Ferreira, Felipe Nilvan |
dc.subject.por.fl_str_mv |
sampling accuracy fish larvae measurements precision amostragem exatidão larvas de peixes Lophiosilurus alexandri medidas precisão |
topic |
sampling accuracy fish larvae measurements precision amostragem exatidão larvas de peixes Lophiosilurus alexandri medidas precisão |
description |
Experiments in the cultivation or ecological with fish larvae, invariably use the length and weight with parameters. Therefore, this experiment was accomplished with larvae of Lophiosilurus alexandri pacamã aiming at to determine some sources of mistakes sampling in the measurement of the size and of the weight of fish larvae. It was evaluated five possible sources of mistakes then. The first was the mistake in the measure of the lengths total and standard, due sharpness of two observers' measurement. The second the mistake in the measure of the lengths total and standard, due to the proportionate shrink for the fixative formomalin to 10%. The third party was the mistake due two forms of drying of the larvae in the obtaining of the biomass. The fourth experiment was on the influence of the size and of the grouping of the larvas in the obtaining of weights. Finally the last tested the alteration of the biomass due to the time of permanence of the larvae in the balance. The importance can be verified of to determine and to accomplish an sampling protocol for measurements of fish larvae. For they present size and weight reduced, a small variation in the condition of the mensure, it can alter the result significantly, because significant alterations were verified above for the tests referred. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-09-12 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/393 10.4025/actascibiolsci.v30i3.393 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/393 |
identifier_str_mv |
10.4025/actascibiolsci.v30i3.393 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/393/393 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 30 No 3 (2008); 245-251 Acta Scientiarum. Biological Sciences; v. 30 n. 3 (2008); 245-251 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
_version_ |
1799317391519252480 |