| Registro completo |
| Provedor de dados: |
OMA
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| País: |
Belgium
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| Título: |
Competition between the sibling species <i>Tisbe holothuriae</i> and <i>T. battagliai</i> (Harpacticoida)
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| Autores: |
Bergmans, M.
Janssens, P.P.M.
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| Data: |
1988
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| Ano: |
1988
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| Palavras-chave: |
Competition
Growth
Marine crustaceans
Phenology
Salinity
Sexual reproduction
Sibling species
Harpacticoida
Tisbe battagliai
Tisbe holothuriae
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| Resumo: |
The influence of the salinity on the performance of the sibling species <i>Tisbe holothuriae</i> and <i>T. battagliai</i> in pure and mixed cultures was studied, using laboratory stocks adapted to 32 pro mille for over 175 generations. Cohort studies show that <i>T. holothuriae</i> has higher growth rates (R<sub>0</sub> and r) at 32 pro mille, <i>T. battagliai</i> at 20 pro mille. The latter's life cycle is much less affected by the difference in salinity. 'De Wit' replacement series were used to study competitive interactions. Without water renewal, <i>T. holothuriae</i> eliminates its sibling species in less than 2 generations, apparently through chemical interference. With water renewal, i.e. when exploitation competition becomes relatively more important, <i>T. holothuriae</i> still proves superior at 27 pro mille but the two species are competitively almost equal at 20 pro mille. The two species co-occur <i>in situ</i> during autumn, but their differential predominance at different sites is not explained by the effect of salinity.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3121
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| Fonte: |
%3Ci%3EHydrobiologia+167-168%3C%2Fi%3E%3A+455-462
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| Direitos: |
info:eu-repo/semantics/restrictedAccess
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