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| Autore principale: | |
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| Natura: | Artículo científico |
| Lingua: | es |
| Pubblicazione: |
Universidad de Valparaíso
2013
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| Soggetti: | |
| Accesso online: | https://www.redalyc.org/articulo.oa?id=47926382017 |
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Sommario:
- Variación espacial y temporal en la producción de gametangios en la macroalga exótica Codium fragile subsp. tomentosoides (Chlorophyta: Bryopsidales) en el submareal de Caldera, Chile Cristóbal Villaseñor-Parada Erasmo C. Macaya Luis M. Jara-Rojas Paula E. Neill Ciencias de la Tierra invasion Dispersal fragmentation propagule pressure The macroalga Codium fragile ssp. tomentosoides is characterized by exclusive asexual reproduction through parthenogenesis. We describe the spatial (within thallus) and temporal (seasonal) variability in the abundance of reproductive structures (gametangia) in specimens of C. fragile collected from the subtidal zone of Caldera, Chile. Gametangia are more frequent on newer sections of the thallus (apical and middle), increasing during austral springsummer, and with thallus size (i.e., length and number of dichotomies). Given that apical fragments are highly buoyant and thallus fragmentation increases during the summer, drifting fragments may be important dispersal vectors contributing to the spread of this species to new sites. 2013 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47926382017 es http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.1 Vol.48