Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil
The objective of this study was to report on some aspects of marine cladoceran reproduction in Guanabara Bay. Samples were collected during 1985 using a conical net with 200 mm mesh. Two species were identified: Penilia avirostris and Pseudevadne tergestina. Both species disappeared from the plankto...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
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| Series: | Brazilian Journal of Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842004000300017&lng=en&tlng=en |
| _version_ | 1828430282077765632 |
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| author | A. Marazzo J. L. Valentin |
| author_facet | A. Marazzo J. L. Valentin |
| author_sort | A. Marazzo |
| collection | DOAJ |
| description | The objective of this study was to report on some aspects of marine cladoceran reproduction in Guanabara Bay. Samples were collected during 1985 using a conical net with 200 mm mesh. Two species were identified: Penilia avirostris and Pseudevadne tergestina. Both species disappeared from the plankton in winter. Two months before this phenomenon, parthenogenetic females displayed reduction in brood size, while gamogenetic individuals appeared among the populations. This sequence of events is generally typical of marine cladoceran populations in temperate waters. |
| first_indexed | 2024-12-10T17:46:18Z |
| format | Article |
| id | doaj.art-16f74fa1c2294eb88c68670724abe6c4 |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-10T17:46:18Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-16f74fa1c2294eb88c68670724abe6c42022-12-22T01:39:13ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-4375643a54354910.1590/S1519-69842004000300017S1519-69842004000300017Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, BrazilA. Marazzo0J. L. Valentin1Universidade Federal do Rio de JaneiroUniversidade Federal do Rio de JaneiroThe objective of this study was to report on some aspects of marine cladoceran reproduction in Guanabara Bay. Samples were collected during 1985 using a conical net with 200 mm mesh. Two species were identified: Penilia avirostris and Pseudevadne tergestina. Both species disappeared from the plankton in winter. Two months before this phenomenon, parthenogenetic females displayed reduction in brood size, while gamogenetic individuals appeared among the populations. This sequence of events is generally typical of marine cladoceran populations in temperate waters.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842004000300017&lng=en&tlng=enmarine cladoceransPenilia avirostrisPseudevadne tergestinaGuanabara BayBrazil |
| spellingShingle | A. Marazzo J. L. Valentin Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil Brazilian Journal of Biology marine cladocerans Penilia avirostris Pseudevadne tergestina Guanabara Bay Brazil |
| title | Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil |
| title_full | Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil |
| title_fullStr | Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil |
| title_full_unstemmed | Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil |
| title_short | Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil |
| title_sort | reproductive aspects of marine cladocerans penilia avirostris and pseudevadne tergestina crustacea branchiopoda in the outer part of guanabara bay brazil |
| topic | marine cladocerans Penilia avirostris Pseudevadne tergestina Guanabara Bay Brazil |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842004000300017&lng=en&tlng=en |
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