Energy sources during the early larval development of the European sea bass, Dicentrarchus labrax (L.)

Klaoudatos, Spiros; Tsevis, Nikolaos; Conides, Alexis

doi:10.1016/0044-8486(90)90073-v

Cited by 14 publications

(19 citation statements)

References 9 publications

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“…The size of the newly hatched (3.02 mm) larva is very similar to that of gilthead sea bream (2.95 mm) and is smaller than that of the European sea bass (3.20 mm) (Klaoudatos et al, 1990;Barnabé et al, 1976) and Chelon labrosus (4 mm; Boglione et al, 1992). Red porgy larvae are longer than the larvae of some other potential candidates of the Mediterranean aquaculture: i.e.…”

Section: Mortalitymentioning

confidence: 67%

“…where: i, refers to the measurement at the end of period i; i-1, refers to the measurement at the start of period i; and t is the time elapsed between successive measurements (12 or 24 hours) (Klaoudatos et al, 1990). The efficiency of development was calculated according to the formula proposed by Klaoudatos et al (1990): Ed=u/g.…”

Section: Methodsmentioning

confidence: 99%

“…The total length (TL), the length of both yolk sac axes (L, major axis; H, minor axis) as well as the diameter (d) of the oil globule were measured for each individual, using a M5-A Wild stereomicroscope with ocular micrometer lens reading to the nearest 0.01mm. All observations were carried out on live specimens (Klaoudatos et al, 1990). The yolk sac volume (V ys ) and oil globule (V og ) volumes were calculated using the formulae proposed by Blaxter and Hempel (1966) and Cetta and Capuzzo (1982) considering the yolk sac as an ellipse and the oil globule as a sphere: where L, is the longest axis of the ellipse, H, is the smaller (vertical) axis of the ellipse and d, the diameter of the sphere (in mm).…”

Section: Methodsmentioning

confidence: 99%

“…The efficiency of development was calculated according to the formula proposed by Klaoudatos et al (1990): Ed=u/g. The statistical significance of the means was examined using ANOVA test.…”

Section: Methodsmentioning

confidence: 99%

“…This low-growth phase starts a few hours after the depletion of the internal food reserves. Klaoudatos et al (1990) argued that this low-growth rate phase characterises the larval development and the increased growth rates are owing to the alignment of the head region, since the measured parameter is the length of the larva. However, the duration of these phases is very long to support this and therefore, the changes of the observed growth rate should be attributed to the metabolic processes and transition between internal differentiation and external morphogenesis occurring during this period.…”

Section: Mortalitymentioning

confidence: 99%

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Study on the early larval development and growth of the red porgy, <i>Pagrus pagrus</i> with emphasis on the mass mortalities observed during this phase

Conides

Glamuzina

2001

Sci. Mar.

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SUMMARY: The purpose of this study was to determine the early growth scheme and development stages of the red porgy, Pagrus pagrus larvae through the transition from endogenous and exogenous food sources using as main criterion the body length gained at each development stage. The initial period of the species' larval life can be divided into three phases: a) an initial phase characterised by no motility (0-24 h time after hatching; TAH); b) a phase characterised by active movement and exploitation of the endogenous food reserves (24 h to 96 TAH); and c) a phase characterised by the transition from endogenous to exogenous food (96 to 168 TAH). It was observed that there does not exist an overlapping period between phases b and c and therefore, there exists a gap of 24-36 hours during which the larvae have exhausted their internal food reserves (oil globule and yolk sac) while the digestive tract is not ready to digest external food items (rotifers). We observed a massive larval mortality reaching almost 85% between days 3 and 7 after hatching.

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Section: Mortalitymentioning

confidence: 67%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…The efficiency of development was calculated according to the formula proposed by Klaoudatos et al (1990): Ed=u/g. The statistical significance of the means was examined using ANOVA test.…”

Section: Methodsmentioning

confidence: 99%

Section: Mortalitymentioning

confidence: 99%

See 3 more Smart Citations

Study on the early larval development and growth of the red porgy, <i>Pagrus pagrus</i> with emphasis on the mass mortalities observed during this phase

Conides

Glamuzina

2001

Sci. Mar.

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Effects of the timing of initial feeding on growth and survival of loach (Misgurnus anguillicaudatus) larvae

Wang

et al. 2008

Aquacult Int

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The effects of delayed first feeding on growth and survival and starvation on the point-of-no-return of loach Misgurnus anguillicaudatus larvae were studied by evaluating morphometric characteristics under controlled conditions. Larvae began to feed exogenously at 3 days after hatching (DAH) and the PNR occurred between 9 and 10 DAH at 23 ± 1.0°C. The experimental design included a conventional feeding regime with initial feeding from 3 DAH as a control, delayed first feeding for 4, 5 and 6 DAH. Morphometric characteristics (head depth, body depth, eye diameter, mouth diameter, musculature height, total length and yolk sac volume) were evaluated under different initial feeding time (3, 4, 5 and 6 days after hatching). Loach larvae initiated first feeding at 4, 5 and 6 days after hatching achieved comparatively lesser growth performance in all morphometric characteristics than that of 3 days at the end of the experiment. By day 6, significant differences were observed between 3 and 6 days initial feeding larvae for all morphometric characteristics except eye diameter and mouth diameter. Similarly, significant differences were noticed between 3 and 5 days initial feeding. However, there were no significant differences in head depth, body depth, eye diameter, mouth diameter, and total length between 3 and 4 days initial feeding until 12 DAH. After 15 days rearing, significant differences in all morphometric characteristics appeared between 3 and 4 days initial feeding and followed to the end of the experiment. It was also observed that the yolk absorption in loach larvae was completed by 6 days irrespective of the differences in the initial feeding. The yolk volume of 4 and 5 DAH larvae initiated first feeding at 3 days (0.0125 ± 0.0015; 0.0077 ± 0.0009 mm 3 ) had significant differences compared with yolk volume of larvae initiated first feeding at 4 days (0.0081 ± 0.0011; 0.0039 ± 0.0004 mm 3 ), 5 days (0.0079 ± 0.0010; 0.0017 ± 0.0002 mm 3 ) and 6 days (0.0082 ± 0.0011; 0.0016 ± 0.0001 mm 3 ). Survival rates of four treatments were estimated daily for 30 days and significant differences were observed between the treatments at the end of the experiment. The final survival rate was higher when the loach larvae initiated feeding at 3 days (75.9%) when compared with 4 days (31.8%), 5 days (14.5%) and 6 days (6.4%). The present study suggests that the first feeding of loach larvae should be initiated at 3 DAH for achieving better growth and survival or else bad growth performance will engender if the first feeding is delayed.

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First feeding and subsequent growth performances in piscivorous larvae of Chinese perch Siniperca chuatsi (Perciforms: Sinipercidae)

et al. 2013

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The success of first feeding is influenced by many factors, such as prey availability, and is critical to subsequent larval growth performances. To test the advantages of prey exposure before complete yolk absorption in piscivorous larvae, feeding incidence and specific growth rate were longitudinally measured in Chinese perch Siniperca chuatsi larvae first fed at different ages. The results showed that Chinese perch larvae were able to capture live piscine prey at 4 DAH (days after hatching), 1 day before complete yolk absorption. The feeding incidence and specific growth rate were higher in larvae first fed at 4 DAH than in larvae first fed at 5 or 6 DAH. These results indicate that prey exposure experience can facilitate the onset of first feeding, and that successful exogenous feeding, even before complete yolk absorption, is important for growth performances of piscivorous fish larvae.

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Energy sources during the early larval development of the European sea bass, Dicentrarchus labrax (L.)

Cited by 14 publications

References 9 publications

Study on the early larval development and growth of the red porgy, <i>Pagrus pagrus</i> with emphasis on the mass mortalities observed during this phase

Study on the early larval development and growth of the red porgy, <i>Pagrus pagrus</i> with emphasis on the mass mortalities observed during this phase

Effects of the timing of initial feeding on growth and survival of loach (Misgurnus anguillicaudatus) larvae

First feeding and subsequent growth performances in piscivorous larvae of Chinese perch Siniperca chuatsi (Perciforms: Sinipercidae)

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