Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)

Detalhes bibliográficos
Autor(a) principal: Soares, Claudemir Martins
Data de Publicação: 2008
Outros Autores: Hayashi, Carmino, Faria, Anna Christina Esper Amaro de
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/2689
Resumo: The influence of prey availability, visual contrast and size of dragonfly (Pantala sp) larvae on the predation of cladocerans (Simocephalus serrulatus) is provided. Twenty-four dragonfly naiads (12.57&plusmn;0.05 mm and 100.01&plusmn;9.16 mg) were employed to study the relation between predation rate and availability of cladocerans and visual contrast. 5,10, 15 and 20 cladocerans/L were placed in 1L transparent and black plastic lined aquariums. Cladocerans (1.63&plusmn;0.21 mm and 0.78 mg) were counted and replaced hourly for five consecutive hours. Twenty-four naiads of different sizes were placed in 50mL recipients to study effects of size of dragonfly larvae. Each larvae received 20 cladocerans; counting and reposition of individuals consumed every ten minutes during two consecutive hours were undertaken. Quadratic effect (p < 0.02) in predation rate was reported, with an increase in prey availability: 21.67; 39.00; 42.44 and 49.67% were reported for densities of 5, 10, 15 and 20 cladocerans/L respectively. Predation rate (p < 0.02) was higher in dark wall aquariums (42.67%) than in those with transparent walls (33.72%). Size of dragonfly larvae had a quadratic effect on the predation of cladocerans and highest value occurred with 13.23 mm naiads. While high prey availability increases predation rate, predation is higher in aquariums with dark walls and 13.23 mm-long larvae have the highest predation rate
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spelling Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)Influência da disponibilidade de presas, do contraste visual e do tamanho das larvas de Pantala sp. (Odonata, Insecta) sobre a predação de Simocephalus serrulatus (Cladocera, Crustacea)cladóceroslarvas de OdonataPantala sp.predaçãoSimocephalus serrulatus2.00.00.00-6 Ciências BiológicasThe influence of prey availability, visual contrast and size of dragonfly (Pantala sp) larvae on the predation of cladocerans (Simocephalus serrulatus) is provided. Twenty-four dragonfly naiads (12.57&plusmn;0.05 mm and 100.01&plusmn;9.16 mg) were employed to study the relation between predation rate and availability of cladocerans and visual contrast. 5,10, 15 and 20 cladocerans/L were placed in 1L transparent and black plastic lined aquariums. Cladocerans (1.63&plusmn;0.21 mm and 0.78 mg) were counted and replaced hourly for five consecutive hours. Twenty-four naiads of different sizes were placed in 50mL recipients to study effects of size of dragonfly larvae. Each larvae received 20 cladocerans; counting and reposition of individuals consumed every ten minutes during two consecutive hours were undertaken. Quadratic effect (p < 0.02) in predation rate was reported, with an increase in prey availability: 21.67; 39.00; 42.44 and 49.67% were reported for densities of 5, 10, 15 and 20 cladocerans/L respectively. Predation rate (p < 0.02) was higher in dark wall aquariums (42.67%) than in those with transparent walls (33.72%). Size of dragonfly larvae had a quadratic effect on the predation of cladocerans and highest value occurred with 13.23 mm naiads. While high prey availability increases predation rate, predation is higher in aquariums with dark walls and 13.23 mm-long larvae have the highest predation rateObjetivou-se avaliar a influência da disponibilidade de presas, do contraste visual e do tamanho das larvas de Odonata (Pantala sp.) sobre a predação de cladóceros (Simocephalus serrulatus). Para estudar a taxa de predação em função da disponibilidade de cladóceros em contraste visual, foram utilizadas 24 larvas de Odonata (12,57&plusmn;0,05 mm e 100,01&plusmn;9,16 mg). Foram utilizados 5, 10, 15 20 cladóceros/litro, em aquários de vidro transparente (1-L), e as mesmas densidades em aquários revestidos por plástico preto. Os cladóceros (1,63&plusmn;0,21 mm e 0,78 mg) foram contados e repostos a cada hora, por cinco horas consecutivas. Para estudar o efeito do tamanho de larvas de Odonata na predação de cladóceros, foram utilizadas 24 larvas de diferentes tamanhos, as quais foram colocadas em recipientes (50-ml). Colocaram-se 20 cladóceros com cada larva, realizando-se contagem e reposição dos indivíduos consumidos, a cada dez minutos, por duas horas consecutivas. Observou-se efeito quadrático (p < 0,02) na taxa de predação, com o aumento na disponibilidade de presas, com valores de 21,67; 39,00; 42,44 e 49,67%, para as densidades de 5, 10, 15 e 20 cladóceros/litro, respectivamente. Em relação ao contraste visual, houve maior taxa de predação (p < 0,02) nos aquários com parede escura (42,67%), do que naqueles com parede transparente (33,72%). Observou-se efeito quadrático do tamanho das larvas de Odonata sobre a predação dos cladóceros, ocorrendo maiores taxas com larvas com 13,23 mm. Conclui-se que o aumento na disponibilidade de presas aumenta a taxa de predação, que a predação é maior em aquários com paredes escuras e que larvas com 13,23 mm apresentam maior taxa de predaçãoUniversidade Estadual De Maringá2008-05-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/268910.4025/actascibiolsci.v23i0.2689Acta Scientiarum. Biological Sciences; Vol 23 (2001); 357-362Acta Scientiarum. Biological Sciences; v. 23 (2001); 357-3621807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2689/2004Soares, Claudemir MartinsHayashi, CarminoFaria, Anna Christina Esper Amaro deinfo:eu-repo/semantics/openAccess2022-11-23T17:33:26Zoai:periodicos.uem.br/ojs:article/2689Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:26Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
Influência da disponibilidade de presas, do contraste visual e do tamanho das larvas de Pantala sp. (Odonata, Insecta) sobre a predação de Simocephalus serrulatus (Cladocera, Crustacea)
title Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
spellingShingle Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
Soares, Claudemir Martins
cladóceros
larvas de Odonata
Pantala sp.
predação
Simocephalus serrulatus
2.00.00.00-6 Ciências Biológicas
title_short Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
title_full Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
title_fullStr Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
title_full_unstemmed Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
title_sort Influence of prey availability, visual contrast and size of dragonfly (Pantala sp.) larvae (Odonata, Insecta) on the predation of Simocephalus serrulatus (Cladocera, Crustacea)
author Soares, Claudemir Martins
author_facet Soares, Claudemir Martins
Hayashi, Carmino
Faria, Anna Christina Esper Amaro de
author_role author
author2 Hayashi, Carmino
Faria, Anna Christina Esper Amaro de
author2_role author
author
dc.contributor.author.fl_str_mv Soares, Claudemir Martins
Hayashi, Carmino
Faria, Anna Christina Esper Amaro de
dc.subject.por.fl_str_mv cladóceros
larvas de Odonata
Pantala sp.
predação
Simocephalus serrulatus
2.00.00.00-6 Ciências Biológicas
topic cladóceros
larvas de Odonata
Pantala sp.
predação
Simocephalus serrulatus
2.00.00.00-6 Ciências Biológicas
description The influence of prey availability, visual contrast and size of dragonfly (Pantala sp) larvae on the predation of cladocerans (Simocephalus serrulatus) is provided. Twenty-four dragonfly naiads (12.57&plusmn;0.05 mm and 100.01&plusmn;9.16 mg) were employed to study the relation between predation rate and availability of cladocerans and visual contrast. 5,10, 15 and 20 cladocerans/L were placed in 1L transparent and black plastic lined aquariums. Cladocerans (1.63&plusmn;0.21 mm and 0.78 mg) were counted and replaced hourly for five consecutive hours. Twenty-four naiads of different sizes were placed in 50mL recipients to study effects of size of dragonfly larvae. Each larvae received 20 cladocerans; counting and reposition of individuals consumed every ten minutes during two consecutive hours were undertaken. Quadratic effect (p < 0.02) in predation rate was reported, with an increase in prey availability: 21.67; 39.00; 42.44 and 49.67% were reported for densities of 5, 10, 15 and 20 cladocerans/L respectively. Predation rate (p < 0.02) was higher in dark wall aquariums (42.67%) than in those with transparent walls (33.72%). Size of dragonfly larvae had a quadratic effect on the predation of cladocerans and highest value occurred with 13.23 mm naiads. While high prey availability increases predation rate, predation is higher in aquariums with dark walls and 13.23 mm-long larvae have the highest predation rate
publishDate 2008
dc.date.none.fl_str_mv 2008-05-09
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/2689
10.4025/actascibiolsci.v23i0.2689
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2689
identifier_str_mv 10.4025/actascibiolsci.v23i0.2689
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/2689/2004
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 23 (2001); 357-362
Acta Scientiarum. Biological Sciences; v. 23 (2001); 357-362
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
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