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The Size Driven Variations in Physiological Responses of the Bearded Horse Mussel Modiolus barbatus and the Noah’s Ark Shell Arca noae

Glavić, Nikša; Vlašić, Matea; Bolotin, Jakša; Dupčić Radić, Iris; Hrustić, Enis; Kožul, Valter; Antolović, Nenad (2018) The Size Driven Variations in Physiological Responses of the Bearded Horse Mussel Modiolus barbatus and the Noah’s Ark Shell Arca noae. Turkish Journal of Fisheries and Aquatic Sciences, 18 (12). pp. 1355-1362. ISSN 1303-2712 (In Press)

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Abstract

Bearded horse mussel and Noah’s ark shell are sometimes observed to live together in groups. Oxygen consumption, ammonia excretion and clearance rate were investigated on these species under laboratory conditions considering different size of individuals divided into three size groups (less than 25 mm; 25 to 50 mm and larger than 50 mm). Body size of both species significantly influenced oxygen consumption, ammonia excretion and clearance rate of the Noah’s ark shell. In both species, respiration and clearance rate decreased with body size while excretion rate increased with body size. For Noah’s ark shell groups of 25 to 50 mm and smaller than 25 mm, the atomic ratio between oxygen consumption and ammonium excretion i.e. O:N ratio was detected to be greater than 30. The same applies to a group of the bearded horse mussels smaller than 25 mm. Animals of both species larger than 50 mm have O:N ratio smaller than 30 indicating use of proteins as metabolic substrate, compared to use of lipids and carbohydrates in younger animals.

Item Type: Article
Uncontrolled Keywords: oxygen consumption; ammonia excretion; clearance rate; O:N ratio; size; bearded horse mussel; Noah’s ark shell
Subjects: NATURAL SCIENCES > Chemistry
NATURAL SCIENCES > Biology > Zoology
NATURAL SCIENCES > Biology > Ecology
NATURAL SCIENCES > Biology > General Biology
Divisions: Center for Marine Research
Depositing User: Enis Hrustić
Date Deposited: 06 Jul 2018 12:13
Last Modified: 06 Jul 2018 12:13
URI: http://fulir.irb.hr/id/eprint/4090
DOI: 10.4194/1303-2712-v18_12_03

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