Early development and allometric growth patterns in ide Leuciscus idus (Linnaeus 1758)

Abstract

Allometric growth and ontogeny were studied in ide Leuciscus idus (L.) reared in laboratory conditions from 0 to 30 days post hatching (DPH), to define important steps in the species' early life history. Based on the external morphology, eleven different stages during the early development of ide were identified (ES9 a -JS1 a ; ES -embryonic stage, JS -juvenile stage). After a short period of rest, hatched individuals were visual feeders with a pelagic life. Organogenesis and allometric changes indicated that development priorities concerned feeding efficiency, respiration efficiency and locomotion performances. Also concluded was that the gradual changes observed in body proportions (which occurred across a wide range of body lengths) reflect the absence of abrupt changes in the behaviour and habitat and may also be considered as a gradual adaptation to life in flowing water.

Early development and allometric growth patterns of rheophilic cyprinid common dace Leuciscus leuciscus (Cyprinidae: Leuciscinae)

“…Within a few hours following emergence, free embryos start to swim up to the surface to fill their swim bladder and start active swimming. A similar level of development at hatching is characteristic for few other cyprinids from a group of open substratum early spring spawners, such as ide Leuciscus idus, or asp Aspius aspius, which are able to swim freely soon after emergence (Kupren et al 2011(Kupren et al , 2015aKorzelecka-Orkisz et al 2013). The level of ontogenetic development at hatching is species specific, depends on the reproductive and larval lifestyles, and is highly dependent on environmental conditions, especially water temperature (Sakai 1990;Kamler 1992;Korzelecka-Orkisz et al 2009;Teletchea et al 2009).…”

“…phytophils-carp or tench Tinca tinca) or initially show hiding behaviour (e.g. litophilsEuropean chub Leuciscus cephalus or Tribolodon hakonensis) usually are less developed at the moment of hatching (Peňaź et al 1981;Peňaź et al 1983;Sakai 1990;Korwin-Kossakowski 2008;Kupren et al 2015b). The consequence of this is a relatively long resting period, between hatching and first exogenous feeding, during which the fish reach the level of development that allows them to start swimming actively.…”

Early development and allometric growth in hatchery‐reared Eurasian perch, Perca fluviatilis L.

“…During organogenesis, fish undergo major developmental changes in their body and behaviour for the transition to the juvenile period (Gisbert et al, ; Koumoundouros, Divanach, & Kentouri, ). Consequently, the body structure and specific organs/systems of fish species develop according to their importance for primary functions, showing relatively different growth rates and this is referred to as allometry (Gisbert et al, ; Kupren, Żarski, & Kucharczyk, ; van Snik, Boogaart, & Osse, ). From a structural and functional perspective, morphogenesis—process regulated by genetic and environmental factors—is associated with a shift in shape coupled with abrupt or gradual changes in many morphological characters.…”

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“…For examp le, in Cyprinus carpio, Paralabrax maculatofasciatus and Nannacara anomala, inflexion points occured at 6.4-7.8 mm, 5.86-6.45mm and 4.03-4.84 mm respectively Peña and Du mas 2009;Kupren et al, 2014 a), indicating the existence of a shift in swimming model fro m an anguilliform to subcarangiform Gisbert et al, 2002;Peña and Du mas 2009). In contrast, inflexion points in larval A. chalcoides occurred across a wide size interval (8.13-13.57 mm), as was found in Lota lota (8.64-27.85mm; Kupren et al, 2014b) and Leuciscus cephalus (11.57-25.69 mm; Kupren et al, 2015). These gradual changes in body proportions are probably related to the lack of sharp changes in behavior and habitat and may be also cons idered to be a gradual adaptation to life in flowing water (Kupren et al, 2015).…”

“…In contrast, inflexion points in larval A. chalcoides occurred across a wide size interval (8.13-13.57 mm), as was found in Lota lota (8.64-27.85mm; Kupren et al, 2014b) and Leuciscus cephalus (11.57-25.69 mm; Kupren et al, 2015). These gradual changes in body proportions are probably related to the lack of sharp changes in behavior and habitat and may be also cons idered to be a gradual adaptation to life in flowing water (Kupren et al, 2015). A fter inflxion points, nearly isometric growth was characteristic for most measured characters in the present study.…”