Larval feeding behaviour of angel fish Pterophyllum scalare (Cichlidae) fed copepod Eucyclops serrulatus and cladoceran Ceriodaphnia quadrangula. Issue 7 (8th November 2012)

• Record Type: Journal Article
• Authors: Farhadian, Omidvar; Kharamannia, Rahman; Mahboobi Soofiani, Nasrollah; Ebrahimi Dorche, Eisa
• Is Part Of: Aquaculture research. Volume 45:Issue 7(2014:Jun.)
• Page Start: 1212
• Page End: 1223
• Publication Date: 2012-11-08
• Subjects: Aquaculture -- Periodicals; Fishery management -- Periodicals; 639.8
• DOI: 10.1111/are.12065
• Languages: English
• ISSNs: 1355-557X

Abstract

<abstract abstract-type="main" xml:lang="en" id="are12065-abs-0001"> <title>Abstract</title> <p>Three different live diets, <italic>Eucyclops serrulatus</italic>, <italic> Ceriodaphnia quadrangula</italic> and equal combination of <italic>E. serrulatus</italic> copepodid and <italic>C. quadrangula, </italic> were offered to angelfish (<italic>Pterophyllum scalare</italic>) larvae viz 1‐week, 2‐week and 3‐week old at prey densities of 2, 5 and 10 individuals mL<sup>−1</sup>. Results showed that 1‐week‐old <italic>P. scalare</italic> larvae consumed <italic>E</italic>. <italic>serrulatus</italic> copepodid at a rate of 31.3–56.7 ind. h<sup>−1</sup>, <italic>C. quadrangula</italic> at 8.0–12.0 ind. h<sup>−1</sup>, and mixture of <italic>E. serrulatus</italic> and <italic>C. quadrangula</italic> at 20.7–40.7 ind. h<sup>−1</sup>. For 2‐week‐ and 3‐week‐old larvae, consumption rate increased accordingly. The electivity indices (E) of <italic>P. scalare</italic> (1‐week‐old larvae) for <italic>E. serrulatus</italic> copepodid were +0.18, +0.23 and +0.22 at prey densities of 2, 5 and 10 ind. mL<sup>−1</sup> respectively. Tendency towards <italic>E. serrulatus</italic> copepodid consumption reduced by aging <italic>P. scalare</italic> as indicated by the E values for 2‐ and 3‐week‐old larvae. However, growth and survival of <italic>P. scalare</italic> larvae was greatest when fed on combination of copepod <italic>E. serrulatus</italic> and <italic>C. quadrangula</italic>.</p> </abstract>