Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.creator | Freitas, June Springer de | - |
Autor(es): dc.creator | Paula, Débora Pires de | - |
Autor(es): dc.creator | Cariello, Mariana Otero | - |
Data de aceite: dc.date.accessioned | 2024-10-23T15:11:50Z | - |
Data de disponibilização: dc.date.available | 2024-10-23T15:11:50Z | - |
Data de envio: dc.date.issued | 2017-12-07 | - |
Data de envio: dc.date.issued | 2017-12-07 | - |
Data de envio: dc.date.issued | 1997-12 | - |
Fonte completa do material: dc.identifier | http://repositorio.unb.br/handle/10482/25429 | - |
Fonte completa do material: dc.identifier | https://dx.doi.org/10.1590/S0074-02761997000600003 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/capes/876932 | - |
Descrição: dc.description | The following hypotheses were tested for groups of simultaneous hermaphrodites Biomphalaria tenagophila: (a) snails that have low reproductive success during the process of self-fertilization do not increase their reproductive success after the end of grouping; (b) the copulation behaviour and the presence of one snail whose eggs have a low viability rate influence the partner's reproductive success by cross-fertilization. Groups were constituted by a homozygous pigmented snail and two albinos: one with a viability rate higher than 70% ("good reproducers") and the other less than 10% ("bad reproducers"). All pigmented snails had viability rates higher than 70%. The "good" and "bad" reproducer albino snails had similar copulation behaviour. However, after the end of grouping, the "bad reproducers" continued to have viability rates less than 10% over 30 days. In 100% of the cases that pigmented snails copulated (performing either a male role or simultaneously male and female roles) exclusively with "good" reproducer albinos, they presented high reproductive success (producing, on average of 8.4 pigmented embryos/egg-mass). However, in 100% of the cases that pigmented snails copulated with both partners, the "good" reproducer albino snails produced none or very few embryos (the highest average was 2.2 pigmented embryos/egg-mass). Therefore, the production of viable embryos by cross-fertilization was more influenced by self-fertilization performance than by copulation behaviour. The presence of a snail whose eggs have a low viability rate could decrease their partners reproductive success | - |
Descrição: dc.description | Faculdade de Economia, Administração, Contabilidade e Gestão de Políticas Públicas (FACE) | - |
Descrição: dc.description | Departamento de Economia (FACE ECO) | - |
Formato: dc.format | application/pdf | - |
Idioma: dc.language | en | - |
Publicador: dc.publisher | Instituto Oswaldo Cruz, Ministério da Saúde | - |
Direitos: dc.rights | Acesso Aberto | - |
Direitos: dc.rights | Memórias do Instituto Oswaldo Cruz - This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY NC). Fonte: https://www.scielo.br/j/mioc/a/M8pTRLB9zCLNdjDPctZmP7n/?lang=en#. Acesso em: 10 nov. 2021. | - |
Palavras-chave: dc.subject | Biomphalaria | - |
Palavras-chave: dc.subject | Reprodução animal | - |
Título: dc.title | The Influence of Self-fertilization performance and Copulation Behaviour in Reproduction by Cross-fertilization in Groups of Biomphalaria tenagophila (Mollusca, Planorbidae) | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional – UNB |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: