Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, Brazil
Abstract The study aimed to identify species of the genus Crassostrea from Rio Grande do Sul and to trace the identity of C. praia, a species recognized under conchological or distributive precepts of native oyster species occurring in an ecological gradient beyond mangrove vegetation. To achieve th...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Instituto Internacional de Ecologia
2025-02-01
|
| Series: | Brazilian Journal of Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842025000100114&lng=en&tlng=en |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850238845714432000 |
|---|---|
| author | J. P. R. Ferreira C. H. A. M. Gomes T. B. Freire B. M. S. Scaranto F. L. Zacchi C. M. R. Melo |
| author_facet | J. P. R. Ferreira C. H. A. M. Gomes T. B. Freire B. M. S. Scaranto F. L. Zacchi C. M. R. Melo |
| author_sort | J. P. R. Ferreira |
| collection | DOAJ |
| description | Abstract The study aimed to identify species of the genus Crassostrea from Rio Grande do Sul and to trace the identity of C. praia, a species recognized under conchological or distributive precepts of native oyster species occurring in an ecological gradient beyond mangrove vegetation. To achieve this, oysters were collected in the southernmost region of Brazil (RS) for morphological and molecular identification of C. praia. The specimens were subjected to a diagnostic PCR-RFLP analysis and sequencing of the mitochondrial 16S rDNA gene. Based on the molecular identity of the specimens, a comparative anatomical assessment was made, involving the sizes of the mantle and the labial palps, the shapes of the accessory heart, heart, and anus, and pattern of the tentacles on the edge of the mantle. The molecular results showed the presence of two species in RS: C. rhizophorae and C. gasar, with the latter being a new occurrence for regions beyond mangrove vegetation. C. praia proved to be conspecific with C. rhizophorae, being its synonym. Anatomical data related to the species are plastic and incapable of generating specific criteria for identification between C. gasar and C. rhizophorae. Regarding the shell criteria used to promote the construction of the C. praia entity, they are deeply related to environmental conditions and the effect of population density on its conchological characters, since its molecular identity indicates that this species is synonymous with C. rhizophorae. |
| format | Article |
| id | doaj-art-6ba3afa8e974434f91ef38b07888510d |
| institution | OA Journals |
| issn | 1678-4375 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj-art-6ba3afa8e974434f91ef38b07888510d2025-08-20T02:01:20ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-43752025-02-018510.1590/1519-6984.291323Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, BrazilJ. P. R. Ferreirahttps://orcid.org/0000-0002-3978-3984C. H. A. M. Gomeshttps://orcid.org/0000-0001-6533-9249T. B. Freirehttps://orcid.org/0000-0002-8618-7616B. M. S. Scarantohttps://orcid.org/0000-0002-7332-2161F. L. Zacchihttps://orcid.org/0000-0003-1808-1390C. M. R. Melohttps://orcid.org/0000-0002-0969-7022Abstract The study aimed to identify species of the genus Crassostrea from Rio Grande do Sul and to trace the identity of C. praia, a species recognized under conchological or distributive precepts of native oyster species occurring in an ecological gradient beyond mangrove vegetation. To achieve this, oysters were collected in the southernmost region of Brazil (RS) for morphological and molecular identification of C. praia. The specimens were subjected to a diagnostic PCR-RFLP analysis and sequencing of the mitochondrial 16S rDNA gene. Based on the molecular identity of the specimens, a comparative anatomical assessment was made, involving the sizes of the mantle and the labial palps, the shapes of the accessory heart, heart, and anus, and pattern of the tentacles on the edge of the mantle. The molecular results showed the presence of two species in RS: C. rhizophorae and C. gasar, with the latter being a new occurrence for regions beyond mangrove vegetation. C. praia proved to be conspecific with C. rhizophorae, being its synonym. Anatomical data related to the species are plastic and incapable of generating specific criteria for identification between C. gasar and C. rhizophorae. Regarding the shell criteria used to promote the construction of the C. praia entity, they are deeply related to environmental conditions and the effect of population density on its conchological characters, since its molecular identity indicates that this species is synonymous with C. rhizophorae.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842025000100114&lng=en&tlng=enmangrove oysterstaxonomyphylogenyanatomy16S rDNA |
| spellingShingle | J. P. R. Ferreira C. H. A. M. Gomes T. B. Freire B. M. S. Scaranto F. L. Zacchi C. M. R. Melo Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, Brazil Brazilian Journal of Biology mangrove oysters taxonomy phylogeny anatomy 16S rDNA |
| title | Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, Brazil |
| title_full | Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, Brazil |
| title_fullStr | Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, Brazil |
| title_full_unstemmed | Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, Brazil |
| title_short | Identity of Crassostrea praia () and other oysters from Rio Grande do Sul, Brazil |
| title_sort | identity of crassostrea praia and other oysters from rio grande do sul brazil |
| topic | mangrove oysters taxonomy phylogeny anatomy 16S rDNA |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842025000100114&lng=en&tlng=en |
| work_keys_str_mv | AT jprferreira identityofcrassostreapraiaandotheroystersfromriograndedosulbrazil AT chamgomes identityofcrassostreapraiaandotheroystersfromriograndedosulbrazil AT tbfreire identityofcrassostreapraiaandotheroystersfromriograndedosulbrazil AT bmsscaranto identityofcrassostreapraiaandotheroystersfromriograndedosulbrazil AT flzacchi identityofcrassostreapraiaandotheroystersfromriograndedosulbrazil AT cmrmelo identityofcrassostreapraiaandotheroystersfromriograndedosulbrazil |