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Embryonic brooding and clonal propagation in tropical eastern Pacific cupuladriid bryozoans

Published online by Cambridge University Press:  03 August 2009

Aaron O'Dea ,
Andrew N. Ostrovsky  and
Felix Rodríguez
Aaron O'Dea*
Affiliation:
Smithsonian Tropical Research Institute, MRC 0580-01, Apartado 0843–03092 Panamá, República de Panamá
Andrew N. Ostrovsky
Affiliation:
Department of Invertebrate Zoology, Faculty of Biology and Soil Science, St Petersburg State University, Universitetskaja nab. 7/9, 199034, St Petersburg, Russia Department of Palaeontology, Faculty of Earth Sciences, Geography and Astronomy, Geozentrum, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria
Felix Rodríguez
Affiliation:
Smithsonian Tropical Research Institute, MRC 0580-01, Apartado 0843–03092 Panamá, República de Panamá
*
Correspondence should be addressed to: A. O'Dea, Smithsonian Tropical Research Institute, MRC 0580-01, Apartado 0843–03092, Panamá, República de Panamá email: [email protected]
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Abstract

Colonial invertebrates often mix sexual and asexual methods of propagation, and a comprehensive understanding of both is required for life history study. The asexual cloning of new colonies in cupuladriid bryozoans is much better studied than the formation of new colonies by sexual reproduction. As such, the relative investments of sexual and asexual modes of propagation remain uncertain. This preliminary study explores patterns of embryonic brooding as a measure of investment into sexual reproduction. We conduct a survey of quantity and arrangement of embryos in tropical eastern Pacific cupuladriid colonies and compare this to the frequency of cloning. Species populations show considerable variation in embryonic brooding. Patterns of brooding, both across and within species strongly support the hypothesis that as cloning increases, investment into sexual reproduction decreases. We find preliminary evidence that individual cupuladriid colonies that propagate sexually may senesce like solitary organisms, while species that regularly clone only appear to experience senescence at the level of the zooid.

Keywords

embryonic broodingclonal propagationtropical eastern Pacificcupuladriid bryozoans
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 90 , Issue 2 , March 2010 , pp. 291 - 299
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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References

REFERENCES

Baluk, W. and Radwanski, A. (1977) The colony regeneration and life habitat of free-living bryozoans, Cupuladria canariensis (Busk) and C. haidingeri (Reuss) from the Korytnica Clays (Middle Miocene): Holy Cross Mountains, Poland. Acta Geologica Polonica 27, 143–156.Google Scholar
Cadée, G.C. (1975) Lunulitiform bryozoa from the Guyana shelf. Netherlands Journal of Sea Research 9, 320–343.CrossRefGoogle Scholar
Cheetham, A.H., Jackson, J.B.C. and Sanner, J. (2001) Evolutionary significance of sexual and asexual modes of propagation in Neogene species of the bryozoan Metrarabdotos in tropical America. Journal of Paleontology 75, 564–577.2.0.CO;2>CrossRefGoogle Scholar
Chimonides, P.J. and Cook, P.L. (1981) Observations on living colonies of Selenaria (Bryozoa, Cheilostomata). II. Cahiers de Biologie Marine 22, 207–219.Google Scholar
Cook, P.L. (1963) Observations on live lunulitiform zoaria of Polyzoa. Cahiers de Biologie Marine 4, 407–413.Google Scholar
Cook, P.L. (1965) Notes on the Cupuladriidae (Polyzoa, Anasca). Bulletin of the British Museum (Natural History) Zoology 13, 151–187.CrossRefGoogle Scholar
Cook, P.L. (1977) Colony-wide water currents in living Bryozoa. Cahiers de Biologie Marine 18, 31–47.Google Scholar
Cook, P.L. and Chimonides, P.J. (1978) Observations on living colonies of Selenaria (Bryozoa, Cheilostomata) I. Cahiers de Biologie Marine 19, 147–158.Google Scholar
Cook, P.L. and Chimonides, P.J. (1983) A short history of the lunulite Bryozoa. Bulletin of Marine Science 33, 566–581.Google Scholar
Cook, P.L. and Chimonides, P.J. (1984) Recent and fossil Lunulitidae (Bryozoa, Cheilostomata), 1. The genus Otionella from New Zealand. Journal of Natural History, 18, 227–254.CrossRefGoogle Scholar
Cook, P.L. and Chimonides, P.J. (1985) Recent and fossil Lunulitidae (Bryozoa, Cheilostomata), 4. American and Australian species of Otionella. Journal of Natural History 19, 575–603.CrossRefGoogle Scholar
Cook, P.L. and Chimonides, P.J. (1994) Notes on the family Cupuladriidae (Bryozoa), and on Cupuladria remota sp. n. from the Marquesas Islands. Zoologica Scripta 23, 251–268.CrossRefGoogle Scholar
Håkansson, E. and Thomsen, E. (2001) Asexual propagation in cheilostome Bryozoa: evolutionary trends in a major group of colonial animals. In Jackson, J.B.C., Lidgard, S. and McKinney, F.K. (eds) Evolutionary patterns: growth, form and tempo in the fossil record. Chicago and London: University of Chicago Press, pp. 326–347.Google Scholar
Herrera, A., Jackson, J.B.C., Hughes, D.J., Jara, J. and Ramos, H. (1996) Life-history variation in three coexisting cheilostome bryozoan species of the genus Stylopoma in Panama. Marine Biology 126, 461–469.CrossRefGoogle Scholar
Herrera-Cubilla, A., Dick, M.H., Sanner, J. and Jackson, J.B.C. (2006) Neogene Cupuladriidae of tropical America. I: Taxonomy of Recent Cupuladria from opposite sides of the Isthmus of Panama. Journal of Paleontology 80, 245–263.CrossRefGoogle Scholar
Herrera-Cubilla, A., Dick, M.H., Sanner, J. and Jackson, J.B.C. (2008) Neogene Cupuladriidae of tropical America. II: Taxonomy of Recent Discoporella from opposite sides of the Isthmus of Panama. Journal of Paleontology 82, 279–298.CrossRefGoogle Scholar
Hughes, T.P. and Jackson, J.B.C. (1980) Do corals lie about their age? Some demographic consequences of partial mortality, fission and fusion. Science 209, 713–715.CrossRefGoogle ScholarPubMed
Jackson, J.B.C. and Hughes, T.P. (1985) Adaptive strategies of coral-reef invertebrates. American Scientists 73, 265–274.Google Scholar
Jackson, J.B.C. and Wertheimer, S.P. (1985) Patterns of reproduction in five common species of Jamaican reef-associated bryozoans. In Nielsen, C. and Larwood, G.P. (eds) Bryozoa: Ordovician to Recent. Dredensborg, Denmark: Olsen and Olsen, pp. 161–168.Google Scholar
Kirkwood, T.B.L. (1977) Evolution of aging. Nature 270, 301–304.CrossRefGoogle Scholar
Lagaaij, R. (1963) Cupuladria canariensis (Busk)—portrait of a bryozoan. Palaeontology 6, 172–217.Google Scholar
Marcus, E. and Marcus, E. (1962) On some lunulitiform Bryozoa. Universidade de São Paulo Boletins da Faculdade de Philosophia, Sciéncias e Letras, Zoologia 3, 111–353.CrossRefGoogle Scholar
McKinney, F.K. and Jackson, J.B.C. (1989) Bryozoan evolution. Boston: Unwin Hyman.Google Scholar
O'Dea, A. (2006) Asexual propagation in the marine bryozoan Cupuladria exfragminis. Journal of Experimental Marine Biology and Ecology 335, 312–322.CrossRefGoogle Scholar
O'Dea, A. and Jackson, J.B.C. (2002) Bryozoan growth mirrors contrasting seasonal regimes across the Isthmus of Panama. Palaeogeography Palaeoclimatology Palaeoecology 185, 77–94.CrossRefGoogle Scholar
O'Dea, A., Herrera-Cubilla, A., Fortunato, H. and Jackson, J.B.C. (2004) Life history variation in cupuladriid bryozoans from either side of the Isthmus of Panama. Marine Ecology Progress Series 280, 145–161.CrossRefGoogle Scholar
O'Dea, A., Jackson, J.B.C., Taylor, P.D. and Rodríguez, F. (2008) Modes of reproduction in Recent and fossil cupuladriid bryozoans. Palaeontology 51, 847–864.CrossRefGoogle Scholar
Okamura, B., Harmelin, J-G. and Jackson, J.B.C. (2001) Refuges revisited. Enemies versus flow and feeding as determinants of sessile animal distribution and form. In Jackson, J.B.C., Lidgard, S. and McKinney, F.K. (eds) Evolutionary patterns: growth, form, and tempo in the fossil record. Chicago and London: University of Chicago Press, pp. 61–93.Google Scholar
Ostrovsky, A.N., O'Dea, A. and Rodriguez, F. (2009) Comparative anatomy of internal incubational sacs in cupuladriid bryozoans and the evolution of brooding in free-living cheilostomes. Journal of Morphology (in press).CrossRefGoogle ScholarPubMed
Palumbi, S.R. and Jackson, J.B.C. (1983) Ageing in modular organisms: ecology of zooid senescence in Steginoporella sp. (Bryozoa: Cheilostomata). Biological Bulletin. Marine Biological Laboratory, Woods Hole 164, 267–278.CrossRefGoogle Scholar
Silén, L. and Harmelin, J-G. (1974) Observations on living Diastoporidae (Bryozoa, Cyclostomata), with special regard to polymorphism. Acta Zoologica 55, 81–96.CrossRefGoogle Scholar
Thomsen, E. and Håkansson, E. (1995) Sexual versus asexual dispersal in clonal animals—examples from cheilostome bryozoans. Paleobiology 21, 496–508.CrossRefGoogle Scholar
Winston, J.E. (1988) Life histories of free-living bryozoans. National Geographic Research 4, 528–539.Google Scholar