20.500.12556/DiRROS-19366 Can young-of-the-year invasive fish keep up with young-of-the-year native fish? A comparison of feeding rates between invasive sticklebacks and whitefish a comparison of feeding rates between invasive sticklebacks and whitefish Can young-of-the-year invasive fish keep up with young-of-the-year native fish Invasion of non-native species might alter food web structure and the strength of top-down control within lake ecosystems. As top-down control exerted by fish populations is often dominated by young of the year fish, the impact of new fish species might depend on the feeding rates of the juvenile fish. Here we provide comparative analyses of feeding rates of juvenile whitefish (Coregonus wartmanni) – a native and specialised planktivore and an invasive generalist (sticklebacks, Gasterosteus aculeatus). We studied feedings rates of whitefish and sticklebacks in aquaria experiments using 2 cm to 8 cm fish feeding on seven zooplankton species common to Lake Constance. As whitefish hatch several months earlier than sticklebacks, 0+ whitefish are larger than 0+ sticklebacks throughout the year and hence are predicted to have higher feeding rates on especially large zooplankton species. We show that sticklebacks as small as 2 cm were able to feed on the largest zooplankton species of Lake Constance. Further, stickleback feeding rates were similar to both the same size 0+ whitefish and the larger 0+ whitefish co-occurring with smaller 0+ sticklebacks. Hence, 0+ sticklebacks will compete with 0+ whitefish for the same zooplankton species, therefore the invasion of sticklebacks is unlikely to change the relative feeding pressure by individual 0+ fish on zooplankton species. invazivne vrste prehrana s planktonom raba virov zooplankton true false true Angleški jezik Slovenski jezik Neznano 2024-07-16 12:33:48 2024-07-16 12:33:48 2024-07-17 03:59:15 0000-00-00 00:00:00 2022 0 0 Nasl. z nasl. zaslona; Opis vira z dne 11. 2. 2022; str. 1-10 iss. 1 Vol. 12 Jan. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-01-23 59 2045-7758 10.1002/ece3.8486 97141251 https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.8486 1 207175de-434e-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26708 RAZ_Ogorelec_Ziga_2022.pdf RAZ_Ogorelec_Ziga_2022.pdf 1 724CC7C69CFF1F59B95E1B6E707757D1 5bbe9746389fb86b883055bed33d395523a348aa2d651b01229a8971ef0c9a88 cf46acf5-434e-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26709 Nacionalni inštitut za biologijo 0 0 0