Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)

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 tempe...

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Autores principales:	MUÑOZ,VERÓNICA, HERNÁNDEZ-GONZÁLEZ,MARÍA C., BUSCHMANN,ALEJANDRO H., GRAHAM,MICHAEL H., VÁSQUEZ,JULIO A.
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2004
Materias:	gametophytes Macrocystis pyrifera nutrients oogonia production sporophyte production temperature
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400007
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spelling	oai:scielo:S0716-078X20040004000072005-04-22Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)MUÑOZ,VERÓNICAHERNÁNDEZ-GONZÁLEZ,MARÍA C.BUSCHMANN,ALEJANDRO H.GRAHAM,MICHAEL H.VÁSQUEZ,JULIO A. gametophytes Macrocystis pyrifera nutrients oogonia production sporophyte production temperature 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 per female often led to the production of multiple sporophytes per female. We discuss the importance of these results relative to variability in M. pyrifera life histories (e.g., annual vs. perennial) and their likely ecological and evolutionary consequencesinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.77 n.4 20042004-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400007en10.4067/S0716-078X2004000400007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	gametophytes Macrocystis pyrifera nutrients oogonia production sporophyte production temperature
spellingShingle	gametophytes Macrocystis pyrifera nutrients oogonia production sporophyte production temperature MUÑOZ,VERÓNICA HERNÁNDEZ-GONZÁLEZ,MARÍA C. BUSCHMANN,ALEJANDRO H. GRAHAM,MICHAEL H. VÁSQUEZ,JULIO A. Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)
description	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 per female often led to the production of multiple sporophytes per female. We discuss the importance of these results relative to variability in M. pyrifera life histories (e.g., annual vs. perennial) and their likely ecological and evolutionary consequences
author	MUÑOZ,VERÓNICA HERNÁNDEZ-GONZÁLEZ,MARÍA C. BUSCHMANN,ALEJANDRO H. GRAHAM,MICHAEL H. VÁSQUEZ,JULIO A.
author_facet	MUÑOZ,VERÓNICA HERNÁNDEZ-GONZÁLEZ,MARÍA C. BUSCHMANN,ALEJANDRO H. GRAHAM,MICHAEL H. VÁSQUEZ,JULIO A.
author_sort	MUÑOZ,VERÓNICA
title	Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)
title_short	Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)
title_full	Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)
title_fullStr	Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)
title_full_unstemmed	Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)
title_sort	variability in per capita oogonia and sporophyte production from giant kelp gametophytes (macrocystis pyrifera, phaeophyceae)
publisher	Sociedad de Biología de Chile
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400007
work_keys_str_mv	AT munozveronica variabilityinpercapitaoogoniaandsporophyteproductionfromgiantkelpgametophytesmacrocystispyriferaphaeophyceae AT hernandezgonzalezmariac variabilityinpercapitaoogoniaandsporophyteproductionfromgiantkelpgametophytesmacrocystispyriferaphaeophyceae AT buschmannalejandroh variabilityinpercapitaoogoniaandsporophyteproductionfromgiantkelpgametophytesmacrocystispyriferaphaeophyceae AT grahammichaelh variabilityinpercapitaoogoniaandsporophyteproductionfromgiantkelpgametophytesmacrocystispyriferaphaeophyceae AT vasquezjulioa variabilityinpercapitaoogoniaandsporophyteproductionfromgiantkelpgametophytesmacrocystispyriferaphaeophyceae
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Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)

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