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Broquard C, Lancelot T, Lefebvre S, Courcot L, Gaudron SM. Larval growth of the polychaete Arenicola marina under different temperature and food conditions: consequences on bioenergetic models. CONSERVATION PHYSIOLOGY 2022; 10:coac033. [PMID: 35693035 PMCID: PMC9181616 DOI: 10.1093/conphys/coac033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 05/10/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
Arenicola marina, a marine benthic polychaete, is widespread on sandy beaches in Europe and considered as an ecosystem engineer despite commonly used as bait by fishermen. Data regarding the bioenergetics of the lugworm larval stages are still incomplete. Trochophore is initially lecithotroph and then becomes planktotroph while growing as metatrochophore on subtidal area, a quite stable daily temperature environment compared with the foreshore, where juveniles and adult live, with daily temperature fluctuating up to 15°C. These discrepancies in temperature ranges may influence the temperature corrections (TCs) that control metabolic rates during the life cycle of A. marina. We carried out laboratory experiments in microcosms by inducing artificial spawning of lugworms, and then undertaken in vitro fertilization to obtain embryos and, finally, to follow, the larval development up to 10 segments with chaetae for 50 days under three temperature conditions (13°C, 15°C and 17°C) and two food conditions ('fed' and 'non-fed'). The first feeding ('birth') of A. marina larvae was deciphered anatomically for a size between 450 and 500 μm and described at 17 days post-fertilization for larvae reared at 15°C and 17°C. Using a biphasic model with a von Bertalanffy growth before 'birth' and an exponential growth after 'birth', among the three temperature treatments, the 15°C condition exhibited the best larval performance. TC based on embryonic and larval metabolic rates gave an Arrhenius temperature of ~6661 K and a higher boundary temperature tolerance range of ~294.5 K. Both temperature values differ from those calculated from TC based mostly on juvenile and adult metabolic rates. We claim to use two sets of Arrhenius temperatures according to the life history stages of A. marina while using Dynamic Energy Budget model. This model was developed initially in order to manage the conservation of the lugworm species.
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Affiliation(s)
| | | | - Sébastien Lefebvre
- UMR 8187 Laboratoire d’Océanologie et de Géosciences (LOG), Université de Lille, ULCO, CNRS, IRD, F-59000 Lille, France
| | - Lucie Courcot
- UMR 8187 Laboratoire d’Océanologie et de Géosciences (LOG), Université de Lille, ULCO, CNRS, IRD, F-59000 Lille, France
| | - Sylvie M Gaudron
- Corresponding author: UMR 8187 Laboratoire d'Océanologie et de Géosciences (LOG), Station marine de Wimereux (Université de Lille), 28 Avenue Foch, B.P. 80,62930, Wimereux, France. Tel: 0033 (0)3 21 99 29 61.
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Lavaud R, Filgueira R, Augustine S. The role of Dynamic Energy Budgets in conservation physiology. CONSERVATION PHYSIOLOGY 2021; 9:coab083. [PMID: 34707875 PMCID: PMC8545044 DOI: 10.1093/conphys/coab083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 08/31/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
The contribution of knowledge, concepts and perspectives from physiological ecology to conservation decision-making has become critical for understanding and acting upon threats to the persistence of sensitive species. Here we review applications of dynamic energy budget (DEB) theory to conservation issues and discuss how this theory for metabolic organization of all life on earth (from bacteria to whales) is well equipped to support current and future investigations in conservation research. DEB theory was first invented in 1979 in an applied institution for environmental quality assessment and mitigation. The theory has since undergone extensive development and applications. An increasing number of studies using DEB modelling have provided valuable insights and predictions in areas that pertain to conservation such as species distribution, evolutionary biology, toxicological impacts and ecosystem management. We discuss why DEB theory, through its mechanistic nature, its universality and the wide range of outcomes it can provide represents a valuable tool to tackle some of the current and future challenges linked to maintaining biodiversity, ensuring species survival, ecotoxicology, setting water and soil quality standards and restoring ecosystem structure and functioning in a changing environment under the pressure of anthropogenic driven changes.
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Affiliation(s)
- Romain Lavaud
- School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA
| | - Ramón Filgueira
- Marine Affairs Program, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Starrlight Augustine
- Akvaplan-niva, Fram High North Research Centre for Climate and the Environment, Tromsø 9296, Norway
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Vagner M, Dessier A, Dupuy C, Bustamante P, Dubillot E, Lefrançois C, Réveillac E, Morinière P, Lefebvre S. Maturation of the European sardine Sardina pilchardus under experimental conditions strengthens bioenergetic estimate. MARINE ENVIRONMENTAL RESEARCH 2020; 160:104985. [PMID: 32907723 DOI: 10.1016/j.marenvres.2020.104985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 03/31/2020] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
This study aims at (1) experimentally estimating first sexual maturation of the European sardine S. pilchardus, (2) using the results to calibrate existing bioenergetic models. During the 183 days-experiment, fish growth and body condition were assessed by biometry, and gonads were weighed when present. Age, wet weight and total length at first maturity were estimated at 262 days, 10.79 ± 0.75 g, and 11.26 ± 0.21 cm, respectively. Including these traits in biphasic Von Bertalanffy models did not significantly improve simulations for either length or weight data, meaning that energy allocation was not impacted by these traits. The implementation of the results in the Dynamic Energy Budget (DEB) calibration procedure strengthened the parameter set of the existing model, but resulted in significant changes in the energy allocation. Our results are a first step that will allow the design of new experiments to further quantify maturation and reproduction rates in diverse environmental conditions, consolidating DEB model calibration.
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Affiliation(s)
- Marie Vagner
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17042 La Rochelle Cedex 01, France.
| | - Aurélie Dessier
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17042 La Rochelle Cedex 01, France
| | - Christine Dupuy
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17042 La Rochelle Cedex 01, France
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17042 La Rochelle Cedex 01, France; Institut Universitaire de France (IUF), 1 rue Descartes, 75005, Paris, France
| | - Emmanuel Dubillot
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17042 La Rochelle Cedex 01, France
| | - Christel Lefrançois
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17042 La Rochelle Cedex 01, France
| | - Elodie Réveillac
- Agrocampus Ouest, UMR985 ESE Écologie et Santé des Écosystèmes, 65 rue de Saint- Brieuc, CS 84215, Rennes Cedex 35042, France
| | - Pierre Morinière
- Aquarium La Rochelle, Quai Louis Prunier, 17002 La Rochelle, France
| | - Sébastien Lefebvre
- Université́; Lille, CNRS, Université Littoral Côte d'Opale, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, F-62930, Wimereux, France
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