Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia
Autor(a) principal: | |
---|---|
Data de Publicação: | 1950 |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Boletim do Instituto Paulista de Oceanografia |
Texto Completo: | https://www.revistas.usp.br/bipoce/article/view/78747 |
Resumo: | Continuing the inventory of the Coelenterate Fauna of the Brazilian coast, 23 species of Hydrozoa and a Scyphomedusa are recorded from different points of the coast aproximately between 22º and 24º lat. S. Of these, 14 species were already known from other points of the coast and the remaining 10 were unknown from this latitude. Two species are here listed as new, they are: Halocordyle fragHis and Calicella gabriellae. 1. - Halocordyle fragilis, Stechow's (1923) correction of the generic name Pennaria has been followed, shows remarkable distinctive specific characters such as: alternate distribution of the cladii which do not lie all in the same plane, they are inserted at random on the hydrocaulus with a tendency towards a spiral dexiotropic distribution, sparse distribution of the pedicels which are alternate and not all located on the same side of the hydrocladium, and, finally, the long, wiry aspect of the colony which is as brittle as light glass. This characteristics are not sufficient, to my belief, to establish a new genus, since the polyps and the gonophores are entirely of the Halocordyle type, but they confer upon the species a very peculiar habitus. 2. - Calicella gabriellae forms erect hydrocauli which are extremely soft and flexuose, with hydrothecate and intermediate internodes. The thecae are deep, cylindrical, with a conical base, there are 10-12 long and narrow opercular valves. The gonangia are small, conical, with a short distal digitiform process. The included sporosac exhibits maturing ova. Dynamena heteroclonta described by Jarvis (1922) as a new species, is here considered as a new form of the very variable species Dynamena quadridentata. Schizotricha billardi nom. nov., is specifically separated from Sch. diaphana (Heller) to which it had been identified up to know. The Brazilian colonies agree with the French Somaliland specimens described by Billard (1904) and they are reunited in a new species named after the French worker. The main difference, between the two mentioned species are: shape and size of the gonothecae, of the thecae and of the nematophores. A description is given of all the species not previously recorded from the Brazilian coast as well as biological observations on Olindias sambaquiensis whose shoals during winter months are very large and may entangle partially the fishermen's nets. Its feeding and swimming habits are described and the species proves to be an excellent laboratory animal both for class and research purposes, for it easily endures long transportation (even up to 12 hours during summer months) as well as unoxygenized acquaria and nevertheless greadily feeds on any animal food. |
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Boletim do Instituto Paulista de Oceanografia |
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Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia Continuing the inventory of the Coelenterate Fauna of the Brazilian coast, 23 species of Hydrozoa and a Scyphomedusa are recorded from different points of the coast aproximately between 22º and 24º lat. S. Of these, 14 species were already known from other points of the coast and the remaining 10 were unknown from this latitude. Two species are here listed as new, they are: Halocordyle fragHis and Calicella gabriellae. 1. - Halocordyle fragilis, Stechow's (1923) correction of the generic name Pennaria has been followed, shows remarkable distinctive specific characters such as: alternate distribution of the cladii which do not lie all in the same plane, they are inserted at random on the hydrocaulus with a tendency towards a spiral dexiotropic distribution, sparse distribution of the pedicels which are alternate and not all located on the same side of the hydrocladium, and, finally, the long, wiry aspect of the colony which is as brittle as light glass. This characteristics are not sufficient, to my belief, to establish a new genus, since the polyps and the gonophores are entirely of the Halocordyle type, but they confer upon the species a very peculiar habitus. 2. - Calicella gabriellae forms erect hydrocauli which are extremely soft and flexuose, with hydrothecate and intermediate internodes. The thecae are deep, cylindrical, with a conical base, there are 10-12 long and narrow opercular valves. The gonangia are small, conical, with a short distal digitiform process. The included sporosac exhibits maturing ova. Dynamena heteroclonta described by Jarvis (1922) as a new species, is here considered as a new form of the very variable species Dynamena quadridentata. Schizotricha billardi nom. nov., is specifically separated from Sch. diaphana (Heller) to which it had been identified up to know. The Brazilian colonies agree with the French Somaliland specimens described by Billard (1904) and they are reunited in a new species named after the French worker. The main difference, between the two mentioned species are: shape and size of the gonothecae, of the thecae and of the nematophores. A description is given of all the species not previously recorded from the Brazilian coast as well as biological observations on Olindias sambaquiensis whose shoals during winter months are very large and may entangle partially the fishermen's nets. Its feeding and swimming habits are described and the species proves to be an excellent laboratory animal both for class and research purposes, for it easily endures long transportation (even up to 12 hours during summer months) as well as unoxygenized acquaria and nevertheless greadily feeds on any animal food. Universidade de São Paulo. Instituto Oceanográfico1950-12-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/bipoce/article/view/7874710.1590/S0100-42391951000100003Boletim do Instituto Paulista de Oceanografia; v. 2 n. 1 (1951); 69-104 2317-62880100-4239reponame:Boletim do Instituto Paulista de Oceanografiainstname:Instituto Oceanográfico da Universidade de São Paulo (IOUSP)instacron:USPporhttps://www.revistas.usp.br/bipoce/article/view/78747/82799Vannncci, M.info:eu-repo/semantics/openAccess2014-04-03T12:42:42Zoai:revistas.usp.br:article/78747Revistahttps://www.revistas.usp.br/bipocePUBhttps://www.revistas.usp.br/bipoce/oaiamspires@usp.br0100-42390100-4239opendoar:2014-04-03T12:42:42Boletim do Instituto Paulista de Oceanografia - Instituto Oceanográfico da Universidade de São Paulo (IOUSP)false |
dc.title.none.fl_str_mv |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia |
title |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia |
spellingShingle |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia Vannncci, M. |
title_short |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia |
title_full |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia |
title_fullStr |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia |
title_full_unstemmed |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia |
title_sort |
Hydrozoa e Scyphozoa existentes no instituto paulista de oceanografia |
author |
Vannncci, M. |
author_facet |
Vannncci, M. |
author_role |
author |
dc.contributor.author.fl_str_mv |
Vannncci, M. |
description |
Continuing the inventory of the Coelenterate Fauna of the Brazilian coast, 23 species of Hydrozoa and a Scyphomedusa are recorded from different points of the coast aproximately between 22º and 24º lat. S. Of these, 14 species were already known from other points of the coast and the remaining 10 were unknown from this latitude. Two species are here listed as new, they are: Halocordyle fragHis and Calicella gabriellae. 1. - Halocordyle fragilis, Stechow's (1923) correction of the generic name Pennaria has been followed, shows remarkable distinctive specific characters such as: alternate distribution of the cladii which do not lie all in the same plane, they are inserted at random on the hydrocaulus with a tendency towards a spiral dexiotropic distribution, sparse distribution of the pedicels which are alternate and not all located on the same side of the hydrocladium, and, finally, the long, wiry aspect of the colony which is as brittle as light glass. This characteristics are not sufficient, to my belief, to establish a new genus, since the polyps and the gonophores are entirely of the Halocordyle type, but they confer upon the species a very peculiar habitus. 2. - Calicella gabriellae forms erect hydrocauli which are extremely soft and flexuose, with hydrothecate and intermediate internodes. The thecae are deep, cylindrical, with a conical base, there are 10-12 long and narrow opercular valves. The gonangia are small, conical, with a short distal digitiform process. The included sporosac exhibits maturing ova. Dynamena heteroclonta described by Jarvis (1922) as a new species, is here considered as a new form of the very variable species Dynamena quadridentata. Schizotricha billardi nom. nov., is specifically separated from Sch. diaphana (Heller) to which it had been identified up to know. The Brazilian colonies agree with the French Somaliland specimens described by Billard (1904) and they are reunited in a new species named after the French worker. The main difference, between the two mentioned species are: shape and size of the gonothecae, of the thecae and of the nematophores. A description is given of all the species not previously recorded from the Brazilian coast as well as biological observations on Olindias sambaquiensis whose shoals during winter months are very large and may entangle partially the fishermen's nets. Its feeding and swimming habits are described and the species proves to be an excellent laboratory animal both for class and research purposes, for it easily endures long transportation (even up to 12 hours during summer months) as well as unoxygenized acquaria and nevertheless greadily feeds on any animal food. |
publishDate |
1950 |
dc.date.none.fl_str_mv |
1950-12-31 |
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 |
https://www.revistas.usp.br/bipoce/article/view/78747 10.1590/S0100-42391951000100003 |
url |
https://www.revistas.usp.br/bipoce/article/view/78747 |
identifier_str_mv |
10.1590/S0100-42391951000100003 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/bipoce/article/view/78747/82799 |
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 de São Paulo. Instituto Oceanográfico |
publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto Oceanográfico |
dc.source.none.fl_str_mv |
Boletim do Instituto Paulista de Oceanografia; v. 2 n. 1 (1951); 69-104 2317-6288 0100-4239 reponame:Boletim do Instituto Paulista de Oceanografia instname:Instituto Oceanográfico da Universidade de São Paulo (IOUSP) instacron:USP |
instname_str |
Instituto Oceanográfico da Universidade de São Paulo (IOUSP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Boletim do Instituto Paulista de Oceanografia |
collection |
Boletim do Instituto Paulista de Oceanografia |
repository.name.fl_str_mv |
Boletim do Instituto Paulista de Oceanografia - Instituto Oceanográfico da Universidade de São Paulo (IOUSP) |
repository.mail.fl_str_mv |
amspires@usp.br |
_version_ |
1797053010895962112 |