Effects of life history variation on vertical transfer of toxicants in marine mammals (CROSBI ID 162698)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Noonburg, Erik G. ; Nisbet, Roger M. ; Klanjšček, Tin
engleski
Effects of life history variation on vertical transfer of toxicants in marine mammals
Toxicant bioaccumulation poses a risk to many marine mammal populations. Although individual-level toxicology has been the subject of considerable research in several species, we lack a theoretical framework to generalize the results across environments and life histories. Here we formulate a dynamic energy budget model to predict the effects of intra- and interspecific life history variation on toxicant dynamics in marine mammals. Dynamic energy budget theory attempts to describe the most general processes of energy acquisition and utilization in heterotrophs. We tailor the basic model to represent the marine mammal reproductive cycle, and we add a model of toxicant uptake and partitioning to describe vertical transfer of toxicants from mother to offspring during gestation and lactation. We first show that the model predictions are consistent with qualitative patterns reported in empirical studies and previous species-specific modeling studies. Next, we use this model to examine the dependence of offspring toxicant load on birth order, food density, and interspecific life history variation. © 2010 Elsevier Ltd. All rights reserved.
Bioaccumulation ; Dynamic energy budget ; Energetics ; Marine mammal ; Toxicology ; Vertical transfer
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Podaci o izdanju
264 (2)
2010.
479-489
objavljeno
0022-5193
10.1016/j.jtbi.2010.02.017