Cellular energy allocation in mussels (Mytilus galloprovincialis) from the stratified estuary as a physiological biomarker

Erk, Marijana; Ivanković, Dušica; Strižak, Željka (2011) Cellular energy allocation in mussels (Mytilus galloprovincialis) from the stratified estuary as a physiological biomarker. Marine Pollution Bulletin, 62 (5). pp. 1124-1129. ISSN 0025-326X

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Abstract

This study demonstrates the usefulness of cellular energy allocation (CEA) evaluations as a physiological biomarker to infer the occurrence of natural stress in native populations of mussels inhabiting the stratified estuary (Krka River estuary, Croatia). Sampling sites were selected based on their differences in the salinity and temperature. The CEA value was calculated as a ratio between available energy (Ea) and energy consumption (Ec). Generally, higher values of Ea were recorded in June than in November, which were especially evident in the storage components (carbohydrates and lipids), while the constitutive component (proteins) remained relatively constant. The highest Ec was recorded in mussels at estuarine site compared to coastal site, which may be caused by the energetically costly maintenance of osmotic balance. Decrease in CEA recorded in estuarine mussels may ultimately result in a lower amount of energy available for growth, reproduction, or defence against other stresses (e.g. pollution).

Item Type:	Article
Additional Information:	NOTICE: this is the author’s version of a work that was accepted for publication in Marine Pollution Bulletin. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Marine Pollution Bulletin, Vol 62, Issue 5, (2011). DOI: 10.1016/j.marpolbul.2011.02.056
Uncontrolled Keywords:	cellular energy allocation; natural stress; salt-wedge estuary; mussels; Mytilus galloprovincialis
Subjects:	NATURAL SCIENCES > Interdisciplinary Natural Sciences > Marine Science NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions:	Division for Marine and Enviromental Research
Projects:	Project title Project leader Project code Project type Stanične promjene u vodnih organizama pobuđene metalima [40333] Biserka Raspor 098-0982934-2721 MZOS
Depositing User:	Marijana Erk
Date Deposited:	03 Nov 2014 10:18
URI:	http://fulir.irb.hr/id/eprint/1570
DOI:	10.1016/j.marpolbul.2011.02.056

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