Swimbladder inflation, growth and survival of yellowtail kingfishSeriola lalandi(Valenciennes, 1833) larvae under different temperature, light and oxygen conditions

Abstract

Poor swimbladder inflation leads to low fish survival due to resulting spinal deformities and the inability to feed and develop normally. Failure of swimbladder inflation may be attributed to the inappropriate range of abiotic conditions. This study investigated the effects of temperature, light source and intensity, and oxygen conditions on initial swimbladder inflation, growth and survival of yellowtail kingfish Seriola lalandi larvae. The study consisted of four separate trials including low (21.5°C) and high (24.5°C) temperatures, natural and artificial light sources, low (1000 lux) and high (32 000 lux) light intensities, and ambient and supersaturated dissolved oxygen. Initial swimbladder inflation was only significantly affected by light source, with the highest inflation rate (97.5 ± 3.5%) under artificial light. Fish growth was improved at the higher temperature and at the higher light intensity. Survival was only significantly influenced by light intensity, with the highest survival (11.0 ± 2.3%) at the high intensity (32 000 lux). This study indicates that light source affects swimbladder inflation timing and high artificial light intensity improves larval fish growth and survival.

Morphological development and allometric growth of yellowtail kingfishSeriola lalandiV. larvae under culture conditions

“…On the other hand, opening of mouth and time of first feeding were not synchronous with all larvae, which agrees with previous reports by Stuart and Drawbridge (2012) and Chen et al (2006b). Stuart and Drawbridge (2012) and Woolley et al (2012), report that larvae of S. lalandi begin to gulp and swallow air bubbles to inflate swimbladder through pneumatic ducts in the gut around 2 dph and complete the inflation around 5-10 dph. Therefore, early mouth opening is not only related to first feeding but also for swimbladder inflation as well.…”

“…Thus, characterizing normal growth patterns under adequate culture conditions is necessary to improve existing rearing protocols in hatchery production and to assess optimal larval culture methodologies (Gisbert 1999;Koumoundouros, Divanach & Kentouri 1999;Peña & Dumas 2009;C ßelik, C ßelik, Cirik, G€ urkan & Hayretda g 2012). This rational has been previously proposed for S. lalandi (Woolley, Fielder & Qin 2012), but has yet to be fully performed. In a previous Japanese article, Akazaki and Yoden (1990) described the growth and metamorphosis of larvae and juvenile "Hiramasa", but no growth patterns (i.e.…”

“…Previous studies have observed that pigmentation of retina concomitant with a constant increase in eye diameter and ocular lens size results in a steady improvement of the visual acuity of larvae around the time of first-feeding (Carton & Vaughan 2010). Stuart and Drawbridge (2012) and Woolley et al (2012), report that larvae of S. lalandi begin to gulp and swallow air bubbles to inflate swimbladder through pneumatic ducts in the gut around 2 dph and complete the inflation around 5-10 dph. Stuart and Drawbridge (2012) and Woolley et al (2012), report that larvae of S. lalandi begin to gulp and swallow air bubbles to inflate swimbladder through pneumatic ducts in the gut around 2 dph and complete the inflation around 5-10 dph.…”

The first-feeding response of larval southern bluefin tuna,Thunnus maccoyii(Castelnau, 1872), and yellowtail kingfish,Seriola lalandi(Valenciennes, 1833), to prey density, prey size and larval density

“…While S. lalandi larvae can be produced in relatively high numbers, poor swimbladder inflation and high deformity rates affect quality seed production restricting the commercial success of this species (Kolkovski & Sakakura ; Woolley et al . ).…”

“…Due to the early stage of hatchery research, culture requirements for this species are not yet fully understood and high early larval mortalities have slowed commercialization. In comparison, several studies have described rearing conditions for S. lalandi (Benetti, Nakada, Shotton, Poortenaar, Tracy & Hutchinson ; Chen, Qin, Kumar, Hutchinson & Clarke ; Chen, Qin, Carragher, Clarke, Kumar & Hutchinson ; Hilton, Poortenaar & Sewell ; Carton & Vaughan ; Moran, Smith, Lee & Pether ; Woolley, Fielder & Qin ) and there are established aquaculture industries in Australia, Japan and New Zealand (Nakabo ; Nakada ; Poortenaar, Hooker & Sharp ; Kolkovski & Sakakura ; Benetti et al . ).…”