Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: Investigation through DEB theory. Bernard, I., de Kermoysan, G., & Pouvreau, S. 66(4):349–360. Number: 4![Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: Investigation through DEB theory [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex DEB theory can be used to obtain a detailed description of energy allocation in organisms and the control of this allocation by temperature and food concentration. In this study, we modified the model of Bourlès et al. (2009) developed for the Pacific oyster, Crassostrea gigas, to improve the description of reproductive effort. The model was amended in two ways: a new set of parameters was incorporated and a full description of gonad construction in spring was added, with a new state variable. The application of this model to a dataset for oyster growth measured in four bays over two years showed that this model better described reproductive effort, without modifying overall growth dynamics. We then explored the reproductive responses of oysters to their environment in greater detail, by applying this new version of the model with the theoretical forcing variables of phytoplankton concentration and temperature. Spawning time was found to be driving principally by yearly mean temperature, and reproductive effort was found to depend mostly on the half-saturation coefficient of the functional response. These results highlight the importance of the half-saturation coefficient and provide additional support for field research on the food preferences of oysters.
@article{bernard_effect_2011,
title = {Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: Investigation through {DEB} theory},
volume = {66},
issn = {1385-1101},
url = {http://www.sciencedirect.com/science/article/pii/S1385110111001043},
doi = {10.1016/j.seares.2011.07.009},
series = {The {AquaDEB} project (phase {II}): what we've learned from applying the Dynamic Energy Budget theory on aquatic organisms},
shorttitle = {Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas},
abstract = {{DEB} theory can be used to obtain a detailed description of energy allocation in organisms and the control of this allocation by temperature and food concentration. In this study, we modified the model of Bourlès et al. (2009) developed for the Pacific oyster, Crassostrea gigas, to improve the description of reproductive effort. The model was amended in two ways: a new set of parameters was incorporated and a full description of gonad construction in spring was added, with a new state variable. The application of this model to a dataset for oyster growth measured in four bays over two years showed that this model better described reproductive effort, without modifying overall growth dynamics. We then explored the reproductive responses of oysters to their environment in greater detail, by applying this new version of the model with the theoretical forcing variables of phytoplankton concentration and temperature. Spawning time was found to be driving principally by yearly mean temperature, and reproductive effort was found to depend mostly on the half-saturation coefficient of the functional response. These results highlight the importance of the half-saturation coefficient and provide additional support for field research on the food preferences of oysters.},
pages = {349--360},
number = {4},
journaltitle = {Journal of Sea Research},
shortjournal = {Journal of Sea Research},
author = {Bernard, I. and de Kermoysan, G. and Pouvreau, S.},
urldate = {2019-04-15},
date = {2011-11-01},
note = {Number: 4},
keywords = {{DEB} model, Functional response, Gametogenesis, Reproductive effort, Spawning date}
}
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