Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil
The gross morphology of foregut was investigated and described in detail for four freshwater crab species: a pseudothelphusid, Fredius reflexifrons (Ortmann, 1897) and three trichodactylids - Sylviocarcinus pictus (H. Milne-Edwards, 1853), Valdivia serrata White, 1847, and Dilocarcinus septemdentatu...
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doaj-8e8c5256726a48bf8efe29009b17d8c12020-11-24T22:23:56ZengPensoft PublishersZoologia (Curitiba)1984-46701984-46892010-04-0127222824410.1590/S1984-46702010000200011Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, BrazilSoraya Tatiana M. AlvesFernando A. AbrunhosaJô de F. LimaThe gross morphology of foregut was investigated and described in detail for four freshwater crab species: a pseudothelphusid, Fredius reflexifrons (Ortmann, 1897) and three trichodactylids - Sylviocarcinus pictus (H. Milne-Edwards, 1853), Valdivia serrata White, 1847, and Dilocarcinus septemdentatus (Herbst, 1783). In general, the gastric mills of freshwater crabs showed a similar degree of complexity in relation to other marine species of Anomura and Brachyura previously described in the literature. However, significant morphological differences were observed among the analyzed species, as in ossicle numbers, features and connection types. A total of 38 ossicles were described for S. pictus and V. serrata and 37 ossicles for D. septemdentatus and F. reflexifrons, respectively. The latter species can be distinguished from the others by the presence of a wide cardiac sac resembling two sacs. Most of the ossicles were connected through a rigid connection, and few ossicles were fused. The degree of calcification varied little among the studied species. The differences found among the species suggest that the morphological aspects of the foregut may be useful in the identification of similar species.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200011Freshwater crabsmorphologystomachAmazon regionNeotropic |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Soraya Tatiana M. Alves Fernando A. Abrunhosa Jô de F. Lima |
spellingShingle |
Soraya Tatiana M. Alves Fernando A. Abrunhosa Jô de F. Lima Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil Zoologia (Curitiba) Freshwater crabs morphology stomach Amazon region Neotropic |
author_facet |
Soraya Tatiana M. Alves Fernando A. Abrunhosa Jô de F. Lima |
author_sort |
Soraya Tatiana M. Alves |
title |
Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil |
title_short |
Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil |
title_full |
Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil |
title_fullStr |
Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil |
title_full_unstemmed |
Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil |
title_sort |
foregut morphology of pseudothelphusidae and trichodactylidae (decapoda: brachyura) from northeastern pará, brazil |
publisher |
Pensoft Publishers |
series |
Zoologia (Curitiba) |
issn |
1984-4670 1984-4689 |
publishDate |
2010-04-01 |
description |
The gross morphology of foregut was investigated and described in detail for four freshwater crab species: a pseudothelphusid, Fredius reflexifrons (Ortmann, 1897) and three trichodactylids - Sylviocarcinus pictus (H. Milne-Edwards, 1853), Valdivia serrata White, 1847, and Dilocarcinus septemdentatus (Herbst, 1783). In general, the gastric mills of freshwater crabs showed a similar degree of complexity in relation to other marine species of Anomura and Brachyura previously described in the literature. However, significant morphological differences were observed among the analyzed species, as in ossicle numbers, features and connection types. A total of 38 ossicles were described for S. pictus and V. serrata and 37 ossicles for D. septemdentatus and F. reflexifrons, respectively. The latter species can be distinguished from the others by the presence of a wide cardiac sac resembling two sacs. Most of the ossicles were connected through a rigid connection, and few ossicles were fused. The degree of calcification varied little among the studied species. The differences found among the species suggest that the morphological aspects of the foregut may be useful in the identification of similar species. |
topic |
Freshwater crabs morphology stomach Amazon region Neotropic |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200011 |
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