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Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae) RChHN
MUÑOZ,VERÓNICA; HERNÁNDEZ-GONZÁLEZ,MARÍA C.; BUSCHMANN,ALEJANDRO H.; GRAHAM,MICHAEL H.; VÁSQUEZ,JULIO A..
Vegetative growth and fertility of kelp gametophytes are thought to be antagonistic, such that most successful kelp recruitment is assumed to result from fertilization of single oogonia released from unicellular female gametophytes. We used laboratory culture experiments to study the effect of temperature and nutrient addition on the per capita production of oogonia and sporophytes from Macrocystis pyrifera female gametophytes. Our results indicate that individual multicellular female gametophytes can give rise to more than one oogonium and that per capita oogonia production significantly increases with the enhancement of culture conditions (i.e., decreased temperature and increased nutrient concentration). Furthermore, the production of multiple oogonia...
Tipo: Journal article Palavras-chave: Gametophytes; Macrocystis pyrifera; Nutrients; Oogonia production; Sporophyte production; Temperature.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400007
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