The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturity
The shrimp Potimirim brasiliana plays an important role in streams along the Brazilian coast as it feeds on the organic debris from the surrounding ecosystem. We determined the morphological sexual maturity of P. brasiliana by means of relative growth. Monthly throughout a year, we used sieves (2 mm...
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Universidade Federal de Goiás
2020-03-01
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Series: | Revista de Biologia Neotropical |
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Online Access: | https://www.revistas.ufg.br/RBN/article/view/60646 |
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author | Marina Machado da Costa Patrícia Hoffmann Geslaine Rafaela Lemos Gonçalves Maria Lucia Negreiros-Fransozo |
author_facet | Marina Machado da Costa Patrícia Hoffmann Geslaine Rafaela Lemos Gonçalves Maria Lucia Negreiros-Fransozo |
author_sort | Marina Machado da Costa |
collection | DOAJ |
description | The shrimp Potimirim brasiliana plays an important role in streams along the Brazilian coast as it feeds on the organic debris from the surrounding ecosystem. We determined the morphological sexual maturity of P. brasiliana by means of relative growth. Monthly throughout a year, we used sieves (2 mm mesh diameter) to collect the specimens in a coastal stream. A total of 3,521 specimens had their carapace length (CL) measured, as well as their second pleura length (PL) and the length (AML) and width (AMW) of the appendix masculina. The studied relationships were the following: CL vs. PL; CL vs. AML and CL vs. AMW, with the data adjusted to a logistic equation. All the relationships tested among the demographic groups differed statistically. The CL50 of females measured 3.45 mm, while the CL50 of males measured 2.75 mm. Two adult morphological groups were set apart for each sex. The CL vs. AMW relationship is the best at demonstrating the separation of the morphological groups for males. This fact is an intriguint issue as it suggests the presence of morphotypes in males, probably, playing different roles in the reproductive process. |
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institution | Directory Open Access Journal |
issn | 1807-9652 2178-0579 |
language | English |
last_indexed | 2024-12-18T14:46:49Z |
publishDate | 2020-03-01 |
publisher | Universidade Federal de Goiás |
record_format | Article |
series | Revista de Biologia Neotropical |
spelling | doaj.art-7511bb9e7991403c83be0ae9c471c7332022-12-21T21:04:17ZengUniversidade Federal de GoiásRevista de Biologia Neotropical1807-96522178-05792020-03-0117110.5216/rbn.v17i1.60646The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturityMarina Machado da Costa0Patrícia Hoffmann1Geslaine Rafaela Lemos Gonçalves2Maria Lucia Negreiros-Fransozo3University of the São Paulo State, UNESP, Institute of Biosciences, Department of ZoologyUniversity of the São Paulo State, UNESP, Institute of Biosciences, Department of ZoologyUniversity of the São Paulo State, UNESP, Institute of Biosciences, Department of ZoologyUniversity of the São Paulo State, UNESP, Institute of Biosciences, Department of ZoologyThe shrimp Potimirim brasiliana plays an important role in streams along the Brazilian coast as it feeds on the organic debris from the surrounding ecosystem. We determined the morphological sexual maturity of P. brasiliana by means of relative growth. Monthly throughout a year, we used sieves (2 mm mesh diameter) to collect the specimens in a coastal stream. A total of 3,521 specimens had their carapace length (CL) measured, as well as their second pleura length (PL) and the length (AML) and width (AMW) of the appendix masculina. The studied relationships were the following: CL vs. PL; CL vs. AML and CL vs. AMW, with the data adjusted to a logistic equation. All the relationships tested among the demographic groups differed statistically. The CL50 of females measured 3.45 mm, while the CL50 of males measured 2.75 mm. Two adult morphological groups were set apart for each sex. The CL vs. AMW relationship is the best at demonstrating the separation of the morphological groups for males. This fact is an intriguint issue as it suggests the presence of morphotypes in males, probably, playing different roles in the reproductive process.https://www.revistas.ufg.br/RBN/article/view/60646CarideamorphologyreproductionUbatuba |
spellingShingle | Marina Machado da Costa Patrícia Hoffmann Geslaine Rafaela Lemos Gonçalves Maria Lucia Negreiros-Fransozo The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturity Revista de Biologia Neotropical Caridea morphology reproduction Ubatuba |
title | The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturity |
title_full | The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturity |
title_fullStr | The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturity |
title_full_unstemmed | The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturity |
title_short | The small shrimp, Potimirim brasiliana Villalobos, 1959 (Crustacea, Atyidae) from Brazilian southeastern littoral, and its sexual maturity |
title_sort | small shrimp potimirim brasiliana villalobos 1959 crustacea atyidae from brazilian southeastern littoral and its sexual maturity |
topic | Caridea morphology reproduction Ubatuba |
url | https://www.revistas.ufg.br/RBN/article/view/60646 |
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