Abstract
Mazzaella laminarioides has consistently been reported as a typical coalescent/clump species with a triphasic life history of the Polysiphonia-type in which the haploid gametophyte is the predominant phase with respect to the diploid sporophyte. Preliminary observations of intertidal populations revealed that, in some instances, cystocarpic and tetrasporic fronds emerged from the same clump (G-T clumps), implying a coalescent process of haploid and diploid thalli by fusion of their corresponding adjacent basal holdfasts. Population surveys at three sites in Coliumo Bay, central Chile, were carried out to characterize frond demography as well as to asses the frequency of gametophyte-tetrasporophyte (G-T) coalescence. Visual and resorcinol methods were employed to determine the phases of the fronds collected over central transects of 15 randomly sampled clumps. Coalescence of G-T clumps was infrequent, with gametophytes dominating over tetrasporophyte thalli.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Garbary DJ, De Wreede RE (1988) Life history phases in natural populations of Gigartinaceae (Rhoodophyta): quantification using resorcinol. In: Lobban CS, Chapman DJ, Kremer BP (eds) Experimental phycology. A laboratory manual. Cambridge University Press, Cambridge, pp 174–178
Hannach G, Santelices B (1985) Ecological differences between the isomorphic reproductive phases of two species of Iridaea. Mar Ecol Prog Ser 22:291–303
Maggs CA, Cheney DP (1990) Competition studies of marine macroalgae in laboratory culture. J Phycol 26:18–24
Mansilla A, Navarro N (2003) Contribución a la flora ficológica de Islas Diego Ramírez. In: Mansilla A, Werlinger C, Navarro N (eds) Macroalgas en ambientes subantárticos. Ediciones Universidad de Magallanes, Punta Arenas, pp 85–89
Martínez E, Santelices B (1992) Size hierarchy and −2/3 “Power law” relationship in a coalescent seaweed. J Phycol 28:259–264
Rosenvinge LK (1931) The marine algae of Denmark, contributions to their natural history. Part IV: Rhodophyceae IV: (Gigartinales, Rhodymeniales, Nemastomatales). K Dan Vidensk Selsk Skr 7,4:489–628
Santelices B (2004) A comparison of ecological responses among aclonal (unitary), clonal and coalescing macroalgae. J Exp Mar Biol Ecol 300:31–44
Santelices B, Norambuena R (1987) A harvesting method for Iridaea laminarioides in central Chile. Hydrobiologia 151/152:329–333
Santelices B, Correa JA, Aedo D, Flores V, Hormazábal M, Sánchez P (1999) Convergent biological processes in coalescing Rhodophyta. J Phycol 35:1127–1149
Santelices B, Aedo D, Hormazábal M, Flores V (2003a) Field testing of inter-and intraspecific coalescence among mid-intertidal red algae. Mar Ecol Progr Ser 250:91–103
Santelices B, Correa JA, Hormazábal M, Flores V (2003b) Contact responses between spores and sporelings, karyological phases and cystocarps of coalescing Rhodophyta. Mar Biol 141:381–392
Santelices B, Hormazábal M, Correa J, Flores V (2004) The fate of overgrown germlings in coalescing Rhodophyta. Phycologia 43:346–352
Thornber CS, Gaines SD (2003) Spatial and temporal variation of haploids and diploids in populations of four congeners of the marine alga Mazzaella. Mar Ecol Progr Ser 258:65–77
Thornber CS, Gaines SD (2004) Population demographics in species with biphasic cycles. Ecology 85:1661–1674
Tveter-Gallagher E, Mathieson AC (1980) Sporeling coalescence in Chondrus crispus (Rhodophyceae). J Phycol 12:110–118
Vásquez JA, Vega JMA (2004) Ecosistemas marinos costeros del Parque Nacional Fray Jorge. In: Squeo FA, Gutiérrez JR, Hernández IR (eds) Historia Natural del Parque Nacional Bosque Fray Jorge. Ediciones Universidad de la Serena, La Serena, Capitulo 13:235–252
Westermeier R, Rivera P, Chacana M, Gómez I (1987) Biological basis for the management of Iridaea laminarioides Bory in southern Chile. Hydrobiologia 151/152:313–328
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2007 Springer Science + Business Media B.V.
About this chapter
Cite this chapter
Vera, C., Lobos, P., Romo, H. (2007). Gametophyte-sporophyte coalescence in populations of the intertidal carrageenophyte Mazzaella laminarioides (Rhodophyta). In: Borowitzka, M.A., Critchley, A.T., Kraan, S., Peters, A., Sjøtun, K., Notoya, M. (eds) Nineteenth International Seaweed Symposium. Developments in Applied Phycology, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9619-8_52
Download citation
DOI: https://doi.org/10.1007/978-1-4020-9619-8_52
Received:
Revised:
Accepted:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-9618-1
Online ISBN: 978-1-4020-9619-8
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)