Please use this identifier to cite or link to this item:
https://biore.bio.bg.ac.rs/handle/123456789/4235
Title: | What’s on the Menu for the Resident Brown Trout in a Rich Limestone Stream? | Authors: | Čanak Atlagić, Jelena Marić, Ana Tubić, Bojana Andjus, Stefan Đuknić, Jelena Marković, Vanja Paunović, Momir Simonović, Predrag |
Keywords: | Brown trout diet;Feeding ecology;Diet diversity;Selectivity;Ontogenetic shift | Issue Date: | 2021 | Rank: | M22 | Project: | 451-03-9/2021-14/200007 451-03-9/2021-14/200178 |
Journal: | Water | Abstract: | Examination of brown trout seasonal diet variation and investigation of terrestrial prey importance in a food-rich stream using four indices of prey importance (number and weight abundance, frequency of occurrence, index of relative importance) revealed that aquatic prey constituted the major part of the diet (>90%) throughout the examined period. Despite Gammaridae being the most abundant in the environment, other less abundant organisms appeared to be important prey, including terrestrial organisms, with maximum consumption in September. The electivity index showed a positive selection of rare prey types; Tokeshi’s model revealed a specialist strategy for most of the population, except for those of 1+ age, who were inclining to generalist strategy. Diet diversity increased throughout April to October, and ages 1+ and 2+ exhibited a more diverse diet than older ages. Diet overlap between age classes was considerable, with less overlap observed in the later season. This pattern of differentiation in the diet of brown trout age classes and their feeding plasticity over seasonal scales, as observed in this food-rich stream, provides a starting point for further examination of this topic in streams with similar or different food richness and availability |
URI: | https://biore.bio.bg.ac.rs/handle/123456789/4235 | ISSN: | 2073-4441 | DOI: | 10.3390/w13182492 |
Appears in Collections: | Journal Article |
Files in This Item:
File | Description | Size | Format | Existing users please |
---|---|---|---|---|
water-13-02492-v2.pdf | 3.05 MB | Adobe PDF | Request a copy |
SCOPUSTM
Citations
3
checked on Oct 31, 2024
Page view(s)
2
checked on Nov 4, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.