Consumption rates and digestibility of four food items by the marine gastropod Charonia seguenzae (Aradas & Benoit, 1870)

TitleConsumption rates and digestibility of four food items by the marine gastropod Charonia seguenzae (Aradas & Benoit, 1870)
Publication TypeJournal Article
Year of Publication2013
AuthorsDoxa, CK, Divanach P, Kentouri M
JournalJournal of Experimental Marine Biology and Ecology
Volume446
Pages10 - 16
KeywordsCharonia seguenzae, Consumption, Digestibility, Feeding
Abstract

Consumption and digestibility rates of four food items (sea star: Luidia sarcii and Astropecten aranciacus, squid: Nototodarus sloanii, shrimp: Parapenaeus longirostris and fish: Boops boops) by the marine gastropod Charonia seguenzae were studied. The food with the greatest mean daily consumption in wet weight was the sea star with 24.03±2.69. g, followed by fish (11.36±3.74. g), shrimp (9.52±1.21. g) and squid (7.36±2.16. g). Absorption rate was higher when squid was consumed (97.1±3.7%, dry weight) followed by shrimp (93.5±4%), fish (87.8±8.6%) and sea star (45±15.3%). Although squid absorption was higher, due to high consumption rates against sea star and fish, energy input did not differ significantly. Tritons absorbed a large proportion of ash only when consuming sea star. Results indicate that C. seguenzae can adapt well in captivity conditions by efficiently digesting alternative foods. Furthermore, a low metabolism is indicated by its low transit that needs 6 to 8. days to digest food consumed from a single feeding. © 2013 Elsevier B.V.

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