Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818)
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 1985 |
| Outros Autores: | , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Memórias do Instituto Oswaldo Cruz |
| Texto Completo: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761985000100016 |
Resumo: | The process of light orientation by the snail Biomphalaria glabrata was studied using the selection technique in a Y-shaped aquarium under vertical or horizontal lighting schemes. Snail behavior was measured on the basis of distance (cm) covered per hour, direction of locomotion, and localization of the animal in the aquarium. A comparison was made of the action of the light stimulus on young and adult animals of albino populations from Santa Luzia (State of Minas Gerais, Brazil) and of a melanic population from Touros (State of Rio Grande do Norte) studied in groups and separately. All groups studied were attracted to light. Analysis of the data suggests the exitence of two orientation mechanisms with respect to light in these animals, i.e. high photo-orthokinesia and positive phototaxis, which influence their motion in the environment. This evidence permitted us to discuss features of the distribution dynamics of these mollusks in the environment and their relationship with the larval phases of Schistosoma mansoni, for which they act as intermediated hosts. |
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Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818)The process of light orientation by the snail Biomphalaria glabrata was studied using the selection technique in a Y-shaped aquarium under vertical or horizontal lighting schemes. Snail behavior was measured on the basis of distance (cm) covered per hour, direction of locomotion, and localization of the animal in the aquarium. A comparison was made of the action of the light stimulus on young and adult animals of albino populations from Santa Luzia (State of Minas Gerais, Brazil) and of a melanic population from Touros (State of Rio Grande do Norte) studied in groups and separately. All groups studied were attracted to light. Analysis of the data suggests the exitence of two orientation mechanisms with respect to light in these animals, i.e. high photo-orthokinesia and positive phototaxis, which influence their motion in the environment. This evidence permitted us to discuss features of the distribution dynamics of these mollusks in the environment and their relationship with the larval phases of Schistosoma mansoni, for which they act as intermediated hosts.Instituto Oswaldo Cruz, Ministério da Saúde1985-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761985000100016Memórias do Instituto Oswaldo Cruz v.80 n.1 1985reponame:Memórias do Instituto Oswaldo Cruzinstname:Fundação Oswaldo Cruzinstacron:FIOCRUZ10.1590/S0074-02761985000100016info:eu-repo/semantics/openAccessSchall,V. T.Jurberg,P.Vasconcellos,M. C.eng2020-04-25T17:45:37Zhttp://www.scielo.br/oai/scielo-oai.php0074-02761678-8060opendoar:null2020-04-26 02:01:01.668Memórias do Instituto Oswaldo Cruz - Fundação Oswaldo Cruztrue |
| dc.title.none.fl_str_mv |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) |
| title |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) |
| spellingShingle |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) Schall,V. T. |
| title_short |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) |
| title_full |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) |
| title_fullStr |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) |
| title_full_unstemmed |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) |
| title_sort |
Orientation to light of juvenile and adult forms of melanic and albino populations of Biomphalaria glabrata (Say, 1818) |
| author |
Schall,V. T. |
| author_facet |
Schall,V. T. Jurberg,P. Vasconcellos,M. C. |
| author_role |
author |
| author2 |
Jurberg,P. Vasconcellos,M. C. |
| author2_role |
author author |
| dc.contributor.author.fl_str_mv |
Schall,V. T. Jurberg,P. Vasconcellos,M. C. |
| dc.description.none.fl_txt_mv |
The process of light orientation by the snail Biomphalaria glabrata was studied using the selection technique in a Y-shaped aquarium under vertical or horizontal lighting schemes. Snail behavior was measured on the basis of distance (cm) covered per hour, direction of locomotion, and localization of the animal in the aquarium. A comparison was made of the action of the light stimulus on young and adult animals of albino populations from Santa Luzia (State of Minas Gerais, Brazil) and of a melanic population from Touros (State of Rio Grande do Norte) studied in groups and separately. All groups studied were attracted to light. Analysis of the data suggests the exitence of two orientation mechanisms with respect to light in these animals, i.e. high photo-orthokinesia and positive phototaxis, which influence their motion in the environment. This evidence permitted us to discuss features of the distribution dynamics of these mollusks in the environment and their relationship with the larval phases of Schistosoma mansoni, for which they act as intermediated hosts. |
| description |
The process of light orientation by the snail Biomphalaria glabrata was studied using the selection technique in a Y-shaped aquarium under vertical or horizontal lighting schemes. Snail behavior was measured on the basis of distance (cm) covered per hour, direction of locomotion, and localization of the animal in the aquarium. A comparison was made of the action of the light stimulus on young and adult animals of albino populations from Santa Luzia (State of Minas Gerais, Brazil) and of a melanic population from Touros (State of Rio Grande do Norte) studied in groups and separately. All groups studied were attracted to light. Analysis of the data suggests the exitence of two orientation mechanisms with respect to light in these animals, i.e. high photo-orthokinesia and positive phototaxis, which influence their motion in the environment. This evidence permitted us to discuss features of the distribution dynamics of these mollusks in the environment and their relationship with the larval phases of Schistosoma mansoni, for which they act as intermediated hosts. |
| publishDate |
1985 |
| dc.date.none.fl_str_mv |
1985-03-01 |
| 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://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761985000100016 |
| url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761985000100016 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
10.1590/S0074-02761985000100016 |
| 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 |
Instituto Oswaldo Cruz, Ministério da Saúde |
| publisher.none.fl_str_mv |
Instituto Oswaldo Cruz, Ministério da Saúde |
| dc.source.none.fl_str_mv |
Memórias do Instituto Oswaldo Cruz v.80 n.1 1985 reponame:Memórias do Instituto Oswaldo Cruz instname:Fundação Oswaldo Cruz instacron:FIOCRUZ |
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Memórias do Instituto Oswaldo Cruz |
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Memórias do Instituto Oswaldo Cruz |
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Fundação Oswaldo Cruz |
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FIOCRUZ |
| institution |
FIOCRUZ |
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Memórias do Instituto Oswaldo Cruz - Fundação Oswaldo Cruz |
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1669937644871614464 |