<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The aim of the study was to determine the degree of overlap in the feeding niches of early developmental stages of roach, Rutilus rutilus (L.), perch, Perca fluviatilis L., bleak, Alburnus alburnus (L.) and sunbleak, Leucaspius delineatus (Heckel). The hypotheses were that (i) larvae of different fish species of similar body sizes feed on similar food, and that (ii) smaller fish compete with larger ones for similar prey. The results of the analysis was to answer the question of whether the diet overlap of juvenile fish stages decreases with ontogenetic development. The study was conducted for two years (2001-2002) in two shallow, polymictic, eutrophic lakes. The diets of early developmental stages of fish species of similar body sizes differed. The few instances of diet overlap resulted from the abundance of food resources in the environment. However, fish of smaller body sizes exploited the same food resources as did individuals of the same species that belonged to different cohorts.</p></abstract>

The aim of the study was to determine the degree of overlap in the feeding niches of early developmental stages of roach, Rutilus rutilus (L.), perch, Perca fluviatilis L., bleak, Alburnus alburnus (L.) and sunbleak, Leucaspius delineatus (Heckel). The hypotheses were that (i) larvae of different fish species of similar body sizes feed on similar food, and that (ii) smaller fish compete with larger ones for similar prey. The results of the analysis was to answer the question of whether the diet overlap of juvenile fish stages decreases with ontogenetic development. The study was conducted for two years (2001-2002) in two shallow, polymictic, eutrophic lakes. The diets of early developmental stages of fish species of similar body sizes differed. The few instances of diet overlap resulted from the abundance of food resources in the environment. However, fish of smaller body sizes exploited the same food resources as did individuals of the same species that belonged to different cohorts.

Does diet overlap among larval and 0+ fish species decrease with ontogenetic development?

Department of Ichthyology Inland Fisheries Institute in Olsztyn, Poland, ul. Oczapowskiego 10, 10-718 Olsztyn

Fisheries & Aquatic Life

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The aim of the study was to determine the degree of overlap in the feeding niches of early developmental stages of roach, Rutilus rutilus (L.), perch, Perca...

Does diet overlap among larval and 0+ fish species decrease with ontogenetic development?

Online veröffentlicht: 05. Nov. 2014

Seitenbereich: 221 - 228

Eingereicht: 18. Juli 2014

Akzeptiert: 03. Aug. 2014

DOI: https://doi.org/10.2478/aopf-2014-0022

Schlüsselwörter
diet overlap, juvenile fish, Rutilus rutilus, Perca fluviatilis, Alburnus alburnus, Leucaspius delineatus

© Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Does diet overlap among larval and 0+ fish species decrease with ontogenetic development?

Online veröffentlicht: 05. Nov. 2014

Seitenbereich: 221 - 228

Eingereicht: 18. Juli 2014

Akzeptiert: 03. Aug. 2014

DOI: https://doi.org/10.2478/aopf-2014-0022

Schlüsselwörterdiet overlap, juvenile fish, Rutilus rutilus, Perca fluviatilis, Alburnus alburnus, Leucaspius delineatus

© Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
diet overlap, juvenile fish, Rutilus rutilus, Perca fluviatilis, Alburnus alburnus, Leucaspius delineatus