20.500.12556/DiRROS-21919 Feeding habits of the invasive ctenophore Mnemiopsis leidyi in the Gulf of Trieste (Adriatic Sea) The diet of the invasive ctenophore Mnemiopsis leidyi in the Gulf of Trieste was examined during its peak occurrence in the summer and early-autumn months (July to October) from 2017 to 2019, through the analysis of stomach contents. Altogether 506 specimens were individually caught for the analysis. A total of 3215 prey items were isolated and identified. Copepods emerged as the primary prey (relative abundance 66.7%), followed by cladocerans (7.7%), and bivalve larvae (6%). Notably, specimens of M. leidyi constituted a significant portion of the diet (5.4.%), providing further evidence of cannibalism within this species. Copepods were also the most commonly occurring prey items in the diet of M. leidyi. Most of them were represented by calanoid and cyclopoid nauplii (48.2%), followed by a harpacticoid M. norvegica (28.3%), and calanoids (26.8%). Other frequently occurring taxa were bivalve larvae (19.3%), M. leidyi (18.7%), and cladoceran Penilia avirostris (16.1%). The rate of cannibalism peaked in July, coinciding with a period of limited food availability. Additionally, the study revealed that fish eggs and larvae were infrequently found in the stomachs of M. leidyi. However, the presence of massive aggregations of M. leidyi may impact microzooplankton populations in late summer or autumn, potentially leading to competition with small pelagic fish. bioinvasion cannibalism comb jelly competition diet Mediterranean Sea bioinvazija kanibalizem rebrače prehrana Sredozemsko morje true false true Angleški jezik Slovenski jezik Neznano 2025-04-10 16:03:41 2025-04-10 16:03:42 2025-10-24 03:50:11 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 27. 3. 2025; Soavtorji: Danijel Ivajnšič, Davor Lučić, Alenka Malej, Lovrenc Lipej; str. 1-12 no. 4, [article no.] 470 Vol. 17 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 2025-02-07 574.5 2073-4441 10.3390/w17040470 230533635 https://www.mdpi.com/2073-4441/17/4/470 1 9d78345d-1614-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31621 RAZ_Mavric_Borut_2025.pdf RAZ_Mavric_Borut_2025.pdf 1 8B87C783F31F8142CAFDA3FE1F101346 011241ef8417b6bd52baec5ce3a49fc362349d06648f3ede403444bc001f4328 b54fd9f1-1614-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31622 Nacionalni inštitut za biologijo 0 0 0