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Title: Cetacean strandings and diet analyses in the north Aegean Sea (Greece)
Authors: Milani, Cristina
Vella, Adriana
Vidoris, Pavlos
Christidis, Aristidis
Kallianiotis, Argyris
Koutrakis, Emanouil
Keywords: Cetacea -- Greece
Cetacea -- North Aegean Sea
Common dolphin
Risso's dolphin
Harbor porpoise -- Greece -- Geographical distribution
Striped dolphin -- Greece
Bottlenose dolphin -- Greece
Issue Date: 2018
Publisher: Marine Biological Association of the United Kingdom
Citation: Milani, C. B., Vella, A., Vidoris, P., Christidis, A., Koutrakis, E., Frantzis, A., ... & Kallianiotis, A. (2018). Cetacean stranding and diet analyses in the North Aegean Sea (Greece). Journal of the Marine Biological Association of the United Kingdom, 98(5), 1011-1028.
Abstract: Cetacean stranding reports in the North Aegean Sea were recorded since 1998 from Strimonikos Gulf in Chalkidiki up to Alexandroupoli on the Turkish border and in a few northern Aegean islands. On site, the specimens were examined to identify species, gender, approximate age and, when possible, cause for stranding. A total of 26 filled stomachs of five cetacean species collected since 2002 were analysed: bottlenose dolphins Tursiops truncatus (N ¼ 8), common dolphins Delphinus delphis (N ¼ 8), harbour porpoises Phocoena phocoena (N ¼ 5), striped dolphins Stenella coeruleoalba (N ¼ 4) and Risso’s dolphins Grampus griseus (N ¼ 1). From the analysed stomachs it was found that the bottlenose dolphins fed mainly on snake blenny Ophidion barbatum (34%), bogue Boops boops (22%) and round sardinella Sardinella aurita (13%); common dolphins on round sardinella (17%), picarels Spicara spp. (10%) and Cocco’s lantern fish Lobianchia gemellaris (9%); harbour porpoises on Gobidae (four-spotted goby Deltentosteus quadrimaculatus 41% and black goby Gobius niger 37%) and round sardinella (7%); striped dolphins on Myctophydae (Madeira lantern fish Ceratoscopelus maderensis 51%), and on Pfeffer’s enople squid Abraliopsis morisii (10%) and bogue (8%); and Risso’s dolphin exclusively on Teuthidae (31%), the umbrella squid Histioteuthis bonellii (30%) and the reverse jewel squid H. reversa (14%). The present work represents the first attempt to investigate the diet up to species level for several cetaceans in Greek waters and for harbour porpoises stranded in the Mediterranean Sea.
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