Success of nursing ide (Leuciscus idus, L.) fry related to the period of feeding with live food |
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Authors: | Jitka Hamáčková Andrea Lepičová Miroslav Prokeš Pavel Lepič Pavel Kozák Tomáš Policar Leon Andrzej Stanny |
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Institution: | (1) Research Institute of Fish Culture and Hydrobiology of Vodňany, University of South Bohemia České Budějovice, Zátiší 728/II, Vodnany, 389 25, Czech Republic;(2) Institute of Vertebrate Biology AS CR, Květná 8, 603 65 Brno, Czech Republic;(3) Polish Academy of Sciences, Institute of Ichthyobiology and Aquaculture Gołysz, Chybie, 43-520, Poland |
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Abstract: | The ide Leuciscus idus (Linnaeus 1758) belongs to autochthonous, less frequent and vulnerable fish species in the frame of ichthyofauna of the Czech
Republic. It was the reason for testing the possibility of captive breeding and production of fry in a controlled environment.
The goal of this paper was to find the optimal transfer time of ide larvae from live food (Artemia salina nauplii) to dry starter feed providing good survival and growth. At the end of the experiment, high values of cumulative
survival (in percentages) and individual weight (in milligrammes) were found for ide fry in groups D (90.6%, 178.6 mg; 15 days
A.
salina + 10 days starter feed), A (89.9%, 169.9 mg; A. salina only) and C (88.6%, 160.4 mg; 10 days A. salina + 15 days starter feed). Significantly lower values of the given parameters were found in group B (57.1%, 92.6 mg; 5 days
A. salina + 20 days starter feed), and the lowest ones were in group E (29.8%, 75.6 mg; starter feed only). Mean values of the level
of ontogenesis at the end of the experiment in fry of A–E groups were analogous to length and weight growth. Groups D, C and
A consisted of juveniles only (J1, J2), and groups B and E consisted of larvae and juveniles (L4, L5, L6, J1, J2). Condition
and production parameters Fulton’s coefficient of condition (FWC), total length (TL), weight (w), specific growth rate (SGR),
food conversion ratio (FCR), cumulative survival] and relationships between basic lengths TL, fork length (FL) and standard
length (SL) were evaluated. |
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Keywords: | Condition and production parameters Early ontogeny Ide Leuciscus idus Live food Artemia salina Rearing in controlled environment Starter feed ASTA |
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