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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: The Effect of Temperature on the Physiological Condition and Immune-Capacity of European Lobsters (Homarus gammarus) During Long-Term Starvation
Author(s): Albalat, Amaya
Johnson, Laura
Coates, Christopher J
Dykes, Gregory C
Hitte, Fiona
Morro, Bernat
Dick, James
Todd, Keith
Neil, Douglas M
Keywords: Homarus gammarus
physiology, starvation
holding temperature
condition markers
hemolymph protein concentration
Issue Date: 29-May-2019
Date Deposited: 29-May-2019
Citation: Albalat A, Johnson L, Coates CJ, Dykes GC, Hitte F, Morro B, Dick J, Todd K & Neil DM (2019) The Effect of Temperature on the Physiological Condition and Immune-Capacity of European Lobsters (Homarus gammarus) During Long-Term Starvation. Frontiers in Marine Science, 6, Art. No.: 281.
Abstract: Decapod crustaceans, such as those from the Homarus genus, are key benthic representatives that support very valuable fishing and aquaculture industries. Those commercially caught, such as the European lobster (H. gammarus) can be stored in live facilities for short (a few days) to long periods (up to 6 months) before being traded. Conditions in captivity are not standardized, including holding temperatures or feeding regimes. Herein, the physiological condition during long-term starvation (24 weeks) in H. gammarus was assessed at three temperatures (4, 8, and 12∘C). Our results indicate that, H. gammarus have the capacity to endure long-term starvation. Principal component analysis (PCA) of measured parameters showed two main components (Eigen value >1). Fasted animals kept at 12∘C, separated from all other experimental groups due to higher total phenoloxidase (PO) activity in the hemolymph and water content in the muscle, suggesting that keeping H. gammarus un-fed at this higher temperature is physiologically more demanding and detrimental. This was later confirmed by significant changes, particularly in this group, in the histology and lipid class composition of the hepatopancreas. These data call into question the suitability of current accepted in vivo condition markers (e.g., hemolymph protein concentration) to determine the physiological condition and welfare of decapods such as H. gammarus.
DOI Link: 10.3389/fmars.2019.00281
Rights: © 2019 Albalat, Johnson, Coates, Dykes, Hitte, Morro, Dick, Todd and Neil. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY - The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
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