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What is maturity? Discussing links between the concept and the underlying physiology of organisms

De Starrlight Augustine

Apparaît également dans la collection : Modeling energy budgets in ecology: DEB theory / Modélisation des budgets d'énergie en écologie : la théorie DEB

Energy investment into maturation encompasses any expenses linked to tissue differentiation, i.e. re-organization of body structure during development. This is different from growth which can be conceptualized as synthesis of more of the same. Energy invested into growth is fixed into the biomass of the organism (with some overheads), but energy invested in maturation is oxidized as metabolic work making it more difficult to quantify in practice. Nonetheless it can be quantified and it can even represent a substantial part of the energy budget of living organisms.In this talk I will give an overview of different studies where investment in maturity was quantified. The focus will be on 4 different types of organisms: cnidarians, ctenophores, teleost fish and frogs. I will further discuss what type of eco-physiological effects might be expected when an organism modifies its investment into these processes. Some intriguing literature studies will be presented which can be re-interpreted in perhaps unexpected ways when investment into maturation is taken into account. This raises the question of just how important and how flexible such costs might actually be. Maturity can be used as a quantifier for internal time. Seven criteria were proposed which should be respected by any such metric: (1) independent of morphology, (2) independent of body size, (3) depend on one a priori homologous event, (4) unaffected by changes in temperature, (5) similar between closely related species, (6) increase with clock time, and (7) physically quantifiable (Reiss 1989). We showed that the maturity concept of Dynamic Energy Budget theory complies with all those criteria and on the basis of this information and the studies presented above I will finish by discussing the potential role of maturity in shaping metabolic flexibility.

Informations sur la vidéo

Données de citation

  • DOI 10.24350/CIRM.V.18754003
  • Citer cette vidéo Augustine, Starrlight (28/04/2015). What is maturity? Discussing links between the concept and the underlying physiology of organisms. CIRM. Audiovisual resource. DOI: 10.24350/CIRM.V.18754003
  • URL https://dx.doi.org/10.24350/CIRM.V.18754003

Bibliographie

  • [1] Augustine, S., Gagnaire, B., Adam-Guillermin, & Kooijman, S.A.L.M. (2011). Developmental energetics of zebrafish, Danio rerio. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 159(3), 275-283 - http://dx.doi.org/10.1016/j.cbpa.2011.03.016
  • [2] Augustine, S., Rosa, S., Kooijman, S.A.L.M., Carlotti, F., & Poggiale, J.-C. (2014). Modeling the eco-physiology of the purple mauve stinger, Pelagia noctiluca using Dynamic Energy Budget theory. Journal of Sea Research, 94, 52-64 - http://dx.doi.org/10.1016/j.seares.2014.06.007
  • [3] Augustine, S., Jaspers, C., Kooijman, S.A.L.M., Carlotti, F., Poggiale, J.-C., Freitas, V., van der Veer, H., & van Walraven. L. (2014b) Mechanisms behind the metabolic flexibility of an invasive comb jelly. Journal of Sea Research, 94, 156-165 - http://dx.doi.org/10.1016/j.seares.2014.09.005
  • [4] Han, C.-H., & Uye, S.-I (2010) Combined effects of food supply and temperature on asexual reproduction and somatic growth of polyps of the common jellyfish Aurelia aurita s.l. Plankton and Benthos Research, 5(3), 98–105 - http://dx.doi.org/10.3800/pbr.5.98
  • [5] Hirota, J. (1972). Laboratory culture and metabolism of the planktonic ctenophore, Pleurobrachia bachei A. Agassiz. In A. Y. Takenouti (Ed.), Biological Oceanography of the North Pacific Ocean (pp. 465-484). Tokyo: Idemitsu Shoten
  • [6] Jaspers, C., Haraldsson, M., Bolte, S., Reusch, T.B.H., Thygesen, U.H., & Kiørboe, T. (2012) Ctenophore population recruits entirely through larval reproduction in the central Baltic Sea. Biology Letters, 8(5), 809-812 - http://dx.doi.org/10.1098/rsbl.2012.0163
  • [7] Kooijman, S.A.L.M. (2010). Dynamic energy budget theory for metabolic organization. New-York: Cambridge University Press - www.cambridge.org/9780521131919
  • [8] Kooijman, S. A. L. M., & Lika, K. (2014) Comparative energetics of the 5 fish classes on the basis of dynamic energy budgets. Journal of Sea Research, 94, 19-28 - http://dx.doi.org/10.1016/j.seares.2014.01.015
  • [9] McKinney, M. L., & McNamara, K. J. (1991). Heterochrony : the evolution of ontogeny. New York: Plenum Press
  • [10] Mueller, C., Augustine, A., Kooijman, S.A.L.M., Kearney, M. R., & Seymore, R. (2012) The trade-off between maturation and growth during accelerated development in frogs. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 163(1), 95-102 - http://dx.doi.org/10.1016/j.cbpa.2012.05.190
  • [11] Piraino, S., Boero, F., Aeschbach, B., & Schmid, V. (1996) Reversing the life cycle: Medusae transforming into polyps and cell transdifferentiation in Turritopsis nutricula (cnidaria, hydrozoa). Biological Bulletin, 190(3), 302-312 - http://dx.doi.org/10.2307/1543022
  • [12] Spicer, J.I., & Burggren, W.W. (2003). Development of physiological regulatory systems: altering the timing of crucial events. Zoology, 106(2), 91-99 - http://dx.doi.org/10.1078/0944-2006-00103

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