Diet of Octopus vulgaris from the Moroccan Mediterranean Coast

Autor:	Younes Saoud, Mohamed Techetach, Rabia Ajana
Rok vydání:	2018
Předmět:	0106 biological sciences Mediterranean climate Teleostei biology 010604 marine biology & hydrobiology fungi Zoology Aquatic Science Oceanography biology.organism_classification 010603 evolutionary biology 01 natural sciences Crustacean Chione Predation Taxon Octopus (genus) Mollusca
Zdroj:	Thalassas: An International Journal of Marine Sciences. 34:415-420
ISSN:	2366-1674 0212-5919
Popis:	In this paper the diet of octopus was studied by analyzing the stomach contents of 365 specimens obtained throughout the year from commercial catches. Different prey items, belonging to three taxa (Mollusca, Crustacea and Teleostei) were found, indicating opportunistic feeding behavior. The most important prey species were Callista chione (62.1% IRI, index of relative importance) and Liocarcinos (23.83% IRI). Mollusks (bivalves) were the most frequently found prey group in octopus stomachs according to the index of occurrence and the index of importance in weight and number, followed by crustaceans (brachyurans) and teleosts. The diet was examined in relation to size, sex and seasons. For small O. vulgaris, crustaceans were more important, whereas for larger specimens, bivalves were dominant. The change of the frequency of prey in stomach of octopus by sex and seasons is not significantly different.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e72518fb5d106b73781b92f07924d2b6 https://doi.org/10.1007/s41208-018-0084-z Zobrazit plný text záznamu Full text from SpringerLink