Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)

Detalhes bibliográficos
Autor(a) principal: Nascimento,Haroldo L. S.
Data de Publicação: 2008
Outros Autores: Alves,Roberto da G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Zoologia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000100003
Resumo: Branchiura sowerbyi Beddard, 1892 is a Tubificidae species abundant in tropical limnic environments and associated with sediments rich in organic matter and elevated temperatures. The present study aimed at obtaining information on laying and hatching rates of B. sowerbyi cocoons under laboratory conditions. In order to do this, specimens of B. sowerbyi were placed in beakers (250 ml) containing clay sediment and distilled water and kept at 25ºC. The obtained cocoons were placed in beakers of 100 ml and kept in conditions similar to the mature individuals. Fifty seven cocoons were collected, with a mean of 0.13 cocoons·individual-1·day-1 and 1.21 (±0.08) eggs·cocoon-1. Hatching time was approximately two weeks and hatching rate was 44.93%. The results obtained were different from the ones found by other authors for B. sowerbyi. According to the literature, different populations of the same species can present distinct biological aspects, such as the number of cocoons, hatching rates and growth.
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spelling Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)Hatching timenumber of eggs per cocoonsnumber of cocoons per individual per dayBranchiura sowerbyi Beddard, 1892 is a Tubificidae species abundant in tropical limnic environments and associated with sediments rich in organic matter and elevated temperatures. The present study aimed at obtaining information on laying and hatching rates of B. sowerbyi cocoons under laboratory conditions. In order to do this, specimens of B. sowerbyi were placed in beakers (250 ml) containing clay sediment and distilled water and kept at 25ºC. The obtained cocoons were placed in beakers of 100 ml and kept in conditions similar to the mature individuals. Fifty seven cocoons were collected, with a mean of 0.13 cocoons·individual-1·day-1 and 1.21 (±0.08) eggs·cocoon-1. Hatching time was approximately two weeks and hatching rate was 44.93%. The results obtained were different from the ones found by other authors for B. sowerbyi. According to the literature, different populations of the same species can present distinct biological aspects, such as the number of cocoons, hatching rates and growth.Sociedade Brasileira de Zoologia2008-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000100003Revista Brasileira de Zoologia v.25 n.1 2008reponame:Revista Brasileira de Zoologia (Online)instname:Sociedade Brasileira de Zoologia (SBZ)instacron:SBZ10.1590/S0101-81752008000100003info:eu-repo/semantics/openAccessNascimento,Haroldo L. S.Alves,Roberto da G.eng2008-05-16T00:00:00Zoai:scielo:S0101-81752008000100003Revistahttp://calvados.c3sl.ufpr.br/ojs2/index.php/zooONGhttps://old.scielo.br/oai/scielo-oai.php||sbz@bio.ufpr.br1806-969X0101-8175opendoar:2008-05-16T00:00Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ)false
dc.title.none.fl_str_mv Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
title Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
spellingShingle Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
Nascimento,Haroldo L. S.
Hatching time
number of eggs per cocoons
number of cocoons per individual per day
title_short Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
title_full Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
title_fullStr Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
title_full_unstemmed Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
title_sort Cocoon production and hatching rates of Branchiura sowerbyi Beddard (Oligochaeta: Tubificidae)
author Nascimento,Haroldo L. S.
author_facet Nascimento,Haroldo L. S.
Alves,Roberto da G.
author_role author
author2 Alves,Roberto da G.
author2_role author
dc.contributor.author.fl_str_mv Nascimento,Haroldo L. S.
Alves,Roberto da G.
dc.subject.por.fl_str_mv Hatching time
number of eggs per cocoons
number of cocoons per individual per day
topic Hatching time
number of eggs per cocoons
number of cocoons per individual per day
description Branchiura sowerbyi Beddard, 1892 is a Tubificidae species abundant in tropical limnic environments and associated with sediments rich in organic matter and elevated temperatures. The present study aimed at obtaining information on laying and hatching rates of B. sowerbyi cocoons under laboratory conditions. In order to do this, specimens of B. sowerbyi were placed in beakers (250 ml) containing clay sediment and distilled water and kept at 25ºC. The obtained cocoons were placed in beakers of 100 ml and kept in conditions similar to the mature individuals. Fifty seven cocoons were collected, with a mean of 0.13 cocoons·individual-1·day-1 and 1.21 (±0.08) eggs·cocoon-1. Hatching time was approximately two weeks and hatching rate was 44.93%. The results obtained were different from the ones found by other authors for B. sowerbyi. According to the literature, different populations of the same species can present distinct biological aspects, such as the number of cocoons, hatching rates and growth.
publishDate 2008
dc.date.none.fl_str_mv 2008-03-01
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=S0101-81752008000100003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000100003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0101-81752008000100003
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 Sociedade Brasileira de Zoologia
publisher.none.fl_str_mv Sociedade Brasileira de Zoologia
dc.source.none.fl_str_mv Revista Brasileira de Zoologia v.25 n.1 2008
reponame:Revista Brasileira de Zoologia (Online)
instname:Sociedade Brasileira de Zoologia (SBZ)
instacron:SBZ
instname_str Sociedade Brasileira de Zoologia (SBZ)
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institution SBZ
reponame_str Revista Brasileira de Zoologia (Online)
collection Revista Brasileira de Zoologia (Online)
repository.name.fl_str_mv Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ)
repository.mail.fl_str_mv ||sbz@bio.ufpr.br
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