Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae)
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Relatório |
Idioma: | eng |
Título da fonte: | Acta Amazonica |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000300250 |
Resumo: | ABSTRACT Acanthodoras is the only genus of catfish known to secrete a conspicuous and abundant milky-looking substance through an axillary pore located just below the base of the posterior cleithral process. Despite this remarkable feature, there is no published information on the anatomical structures that produce the secretion and its possible biological/ecological functions. Dissection and histological analysis of preserved specimens of A. spinosissimus revealed the presence of a saccular axillary gland with large, binuclear secretory cells, similar to those found in other poisonous catfish. Secretory cells near the lumen appear to lose nuclei and become filled with secretory products, possibly with proteinaceous elements, as indicated by their eosinophilic appearance. As far as we know, the saccular morphology of the gland appears to constitute a unique characteristic of Acanthodoras among Doradidae catfishes. Further studies are necessary to determine the chemical composition of the secretion, as well as its possible uses by the catfish in its natural environment. |
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Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae)Amazon basindefensevenom glandfreshwaterABSTRACT Acanthodoras is the only genus of catfish known to secrete a conspicuous and abundant milky-looking substance through an axillary pore located just below the base of the posterior cleithral process. Despite this remarkable feature, there is no published information on the anatomical structures that produce the secretion and its possible biological/ecological functions. Dissection and histological analysis of preserved specimens of A. spinosissimus revealed the presence of a saccular axillary gland with large, binuclear secretory cells, similar to those found in other poisonous catfish. Secretory cells near the lumen appear to lose nuclei and become filled with secretory products, possibly with proteinaceous elements, as indicated by their eosinophilic appearance. As far as we know, the saccular morphology of the gland appears to constitute a unique characteristic of Acanthodoras among Doradidae catfishes. Further studies are necessary to determine the chemical composition of the secretion, as well as its possible uses by the catfish in its natural environment.Instituto Nacional de Pesquisas da Amazônia2021-09-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000300250Acta Amazonica v.51 n.3 2021reponame:Acta Amazonicainstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPA10.1590/1809-4392202101350info:eu-repo/semantics/openAccessSODRÉ,Jefferson G.COLAÇO-FERNANDES,Talles R.PY-DANIEL,Lúcia H. RAPPBIRINDELLI,José L. O.ZUANON,Janseneng2021-09-17T00:00:00Zoai:scielo:S0044-59672021000300250Revistahttps://acta.inpa.gov.br/PUBhttps://old.scielo.br/oai/scielo-oai.phpacta@inpa.gov.br||acta@inpa.gov.br1809-43920044-5967opendoar:2021-09-17T00:00Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.none.fl_str_mv |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) |
title |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) |
spellingShingle |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) SODRÉ,Jefferson G. Amazon basin defense venom gland freshwater |
title_short |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) |
title_full |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) |
title_fullStr |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) |
title_full_unstemmed |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) |
title_sort |
Putative poison gland in the thorny catfish Acanthodoras spinosissimus (Siluriformes: Doradidae) |
author |
SODRÉ,Jefferson G. |
author_facet |
SODRÉ,Jefferson G. COLAÇO-FERNANDES,Talles R. PY-DANIEL,Lúcia H. RAPP BIRINDELLI,José L. O. ZUANON,Jansen |
author_role |
author |
author2 |
COLAÇO-FERNANDES,Talles R. PY-DANIEL,Lúcia H. RAPP BIRINDELLI,José L. O. ZUANON,Jansen |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
SODRÉ,Jefferson G. COLAÇO-FERNANDES,Talles R. PY-DANIEL,Lúcia H. RAPP BIRINDELLI,José L. O. ZUANON,Jansen |
dc.subject.por.fl_str_mv |
Amazon basin defense venom gland freshwater |
topic |
Amazon basin defense venom gland freshwater |
description |
ABSTRACT Acanthodoras is the only genus of catfish known to secrete a conspicuous and abundant milky-looking substance through an axillary pore located just below the base of the posterior cleithral process. Despite this remarkable feature, there is no published information on the anatomical structures that produce the secretion and its possible biological/ecological functions. Dissection and histological analysis of preserved specimens of A. spinosissimus revealed the presence of a saccular axillary gland with large, binuclear secretory cells, similar to those found in other poisonous catfish. Secretory cells near the lumen appear to lose nuclei and become filled with secretory products, possibly with proteinaceous elements, as indicated by their eosinophilic appearance. As far as we know, the saccular morphology of the gland appears to constitute a unique characteristic of Acanthodoras among Doradidae catfishes. Further studies are necessary to determine the chemical composition of the secretion, as well as its possible uses by the catfish in its natural environment. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/report |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
report |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000300250 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000300250 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1809-4392202101350 |
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 Nacional de Pesquisas da Amazônia |
publisher.none.fl_str_mv |
Instituto Nacional de Pesquisas da Amazônia |
dc.source.none.fl_str_mv |
Acta Amazonica v.51 n.3 2021 reponame:Acta Amazonica instname:Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
instname_str |
Instituto Nacional de Pesquisas da Amazônia (INPA) |
instacron_str |
INPA |
institution |
INPA |
reponame_str |
Acta Amazonica |
collection |
Acta Amazonica |
repository.name.fl_str_mv |
Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA) |
repository.mail.fl_str_mv |
acta@inpa.gov.br||acta@inpa.gov.br |
_version_ |
1752129841525686272 |