Early development and allometric growth in hatchery-reared Eurasian perch, Perca fluviatilis L.
PBN-AR
Instytucja
Instytut Rybactwa Śródlądowego im. Stanisława Sakowicza
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
AQUACULTURE RESEARCH
ISSN
1355-557X
EISSN
1365-2109
Wydawca
WILEY-BLACKWELL
DOI
URL
Rok publikacji
2019
Numer zeszytu
9
Strony od-do
2528-2536
Numer tomu
50
Identyfikator DOI
Liczba arkuszy
Autorzy
(liczba autorów: 4)
Pozostali autorzy
+ 3
Słowa kluczowe
EN
allometric growth
early ontogeny
Eurasian perch
morphological development
Streszczenia
Język
EN
Treść
The morphological development and allometric growth patterns of Eurasian perch, Perca fluviatilis L., a highly valued commercial species, were studied under intensive rearing conditions from hatching up to 50 DPH (Days Post Hatch). Based on the external morphology, four different phases during early development of Eurasian perch were identified: pre‐flexion larva 0–20 DPH (5.70–10.16 mm TL); flexion larva 22–30 DPH (11.09–15.14 mm TL) and post‐flexion larva/juvenile 32–50 DPH (18.00–24.75 mm TL). The results indicate that growth period when final replacement of all temporary (larval) structures and most important changes in the shape of P. fluviatilis occurred (between 13.95 and 24.06 mm TL, during flexion and post‐flexion phase) can be considered as a transitional period between the larva and juvenile. All body segments, except trunk length and tail length showed fast growth (positive allometry) throughout the entire studied period or up to the respective inflexion point with a common tendency to isometry. In addition, the specific behaviours (e.g. pelagic way of life) of Eurasian perch larvae resulted in some characteristic allometric growth patterns in the posterior region, different from the majority of other teleosts. The results are discussed with respect to the ontogeny of the functional morphology under both ecological and aquaculture considerations.
Cechy publikacji
ORIGINAL ARTICLE
Inne
System-identifier
PX-5d67887ed5de8e50e29a0211
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