Growth and feeding of juvenile pike Esox lucius (Esocidae) of different hatching dates during its first months of life

Ivanova, M. N.; Svirskaya, A. N.

doi:10.1134/s0032945209070042

Cited by 4 publications

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“…The natural spawning period of northern pike extends from mid-March to mid-May in Europe. Duration of spawning can range from a few days to a month or more, depending on photoperiod and temperature (Ivanova and Svirskaya, 2009). Water temperature of 4-7°C is sufficient to initiate pike spawning (Lindroth, 1946;Franklin and Smith, 1963;Westers and Stickney, 1993).…”

Section: Discussionmentioning

confidence: 99%

Effect of water temperature on egg incubation time and quality of newly hatched larvae of northern pike (Esox lucius L., 1758)

2015

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Effect of water temperature on egg incubation time and quality of newly hatched larvae of northern pike (Esox lucius L., 1758) Summary This study examined the effect of temperature on egg incubation, survival of eggs during embryonic development and quality of newly hatched larvae of northern pike (Esox lucius L.) under laboratory conditions. Eggs of similar size (diameter 2.7 AE 0.16 mm and weight 6.11 AE 0.35 mg) from five females were incubated at 3, 6, 10, 14, and 18°C (groups A, B, C, D, and E, respectively). The lowest fertilization (FR) and hatching rates (HR) were observed in larvae incubated in group A, 44.6 AE 3.2% and 18.26 AE 2.25%, respectively. The highest FR and HR were found in group B (FR, 71.3 AE 4.3%; HR, 56.2 AE 3.21%) and C (FR, 65.6 AE 3.1%; HR, 65.5 AE 5.41%). Time of incubation period varied from 38 AE 0.33 days (120 AE 1.03°d) when 5% larvae were hatched to 46 AE 0.42 days (144 AE 1.31°d) when 95% larvae were hatched in group A and 2.5 AE 0.08 days (44.67 AE 1.42°d) when 5% larvae were hatched to 3.42 AE 0.06 days (61.11 AE 1.07°d) when 95% larvae were hatched in group E. Larvae from groups A, D, and E were characterized by the lowest values of variables such as resistance to osmotic stress after 90 min of exposure of saline solution (OS = 54 AE 3-76 AE 3%), frequency of normally developed larvae (FNL = 23.8 AE 4.14-87. 1 AE 2.42%), and yolk sac volume (YsV = 3.41 AE 0.44-3.89 AE 0.45 ll 3 ). The highest quality larvae were recorded in groups B and C: OS = 92 AE 3% and 80 AE 4%, FNL = 89.7 AE 3.62% and 93.8 AE 3.17, YsV = 3.3 AE 0.66 ll 3 and 3.04 AE 0.42 ll 3 ). Fertilization and hatching rates and quality of larvae showed optimal temperature for successful egg incubation and production of high quality larvae to be 6 to 10°C. Relationship of ontogenic rate to temperature showed development of the pike embryo to be hypothetically stopped at 3.3°C.U.S.

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Section: Discussionmentioning

confidence: 99%

Effect of water temperature on egg incubation time and quality of newly hatched larvae of northern pike (Esox lucius L., 1758)

2015

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“…Duration of spawning period of this group was significantly longer compared to group CP (96±4 hours or 4±0.17 days). The synchronization of ovulation in carnivorous fish species is important for managed reproduction during nursing, since a protracted spawning period may increase cannibalism during larval or juvenile culture because of age and size differences of larvae (Ivanova, 2009). Therefore applications of hormone treatments are widely used in different carnivorous fish species such as pikeperch -Sander lucioperca (Křišťan et al, 2013) or perch (Policar et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…The present study also verified that females kept under indoor conditions rarely ovulate. Ivanova (2009) reported that pike females without hormonal treatment can spawn naturally from a few days up to one month or more, depending on photoperiod and temperature. Our results indicate that housing pike females in ambient environmental conditions with natural littoral vegetation is suitable for stimulation of final ovary maturation.…”

Section: Discussionmentioning

confidence: 99%

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Bondarenko¹,

Podhorec²,

Svinger³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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Various induction protocols were compared with the aim to reach ovulation in northern pike (Esox lucius L.). The effectiveness of salmon D-Arg 6 Pro 9 NEt-GnRHa at two doses in combination with various additives were tested: 50 and 100 µg kg -1 (groups GnRHa 1 and 2), GnRHa at 50 and 100 µg kg -1 in combination with 8 mg kg -1 metoclopramide (groups 3 and 4), GnRHa at 50 and 100 µg kg -1 emulsified in Freund´s incomplete adjuvant (FIA) (groups 5 and 6), and GnRHa at 50 and 100 µg kg-1 emulsified with FIA 8 mg kg -1 and metoclopramide (groups GnRHa 7 and 8). These treatments were compared to indoor controlled conditions (Group ICC, injected with saline solution, without hormonal treatment) and two traditional treatments: 3 mg kg -1 carp pituitary (Group CP) and ambient outdoor conditions (Group AOC, injected with saline solution only, without hormonal treatment).All fish in Group CP and 70% of those in Group AOC ovulated. The latency periods for Group CP was 96±4 h and 264±58 h for Group AOC. One Group-3 female ovulated spontaneously 108 h post-injection, whereas none of the other GnRHa injected or Group ICC fish ovulated. The pseudogonadosomatic index was 19.3±5.9%; 18.5% and 17.8±7.5% in the AOC, Group 3 and CP, respectively. The fertilization rate reached 88.6±4.5%; 85.5±12.0% and 66.0±13.7% in AOC, Group 3 and CP, respectively. The hatching rate was 68.6±9.9%; 65.5±7.5% and 54.4±8.0% in AOC, Group 3 and CP, respectively.The ovarian fluid pH was significantly higher (8.27±0.03) in AOC compared to CP group (8.11±0.02) (P>0.05). Ovarian fluid of the spontaneously ovulated Group-3 fish had a pH of 8.35. There were no significant differences in egg size and weight among successfully reproduced groups -AOC and CP (P>0.05).

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“…Some studies focusing on the size heterogeneity induced by the hatching time both within and between egg batches were based on morphometric and growth analysis (Methven and Brown 1991;Geffen 2002;Kestemont et al 2003;Porter and Bailey 2007;Ivanova and Svirskaya 2009;Steenfeldt et al 2011;Trabelsi et al 2013). An improved growth rate was usually observed in larvae that hatched at the beginning of the hatching period (Methven and Brown 1991;Geffen 2002;Kestemont et al 2003;Porter and Bailey 2007;Trabelsi et al 2013) and is likely to be a consequence of enhanced yolk conversion efficiency by early hatched larvae (Trabelsi et al 2013).…”

Section: Introductionmentioning

confidence: 99%

The effect of hatching time on the bioenergetics of northern pike (Esox lucius) larvae from a single egg batch during the endogenous feeding period

Trabelsi

Jaworski

Kamler

et al. 2015

Fish Physiol Biochem

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Size, caloric value and chemical composition were measured separately in the progeny of two northern pike (Esox lucius) females at 3-day intervals during the endogenous feeding period from hatching to final yolk resorption. Tissue, yolk and entire larvae were analysed separately in three groups of larvae that hatched at different times (between 88 and 106 degree-days post-fertilization). An integrated approach with the Gompertz model was used to compute the yolk conversion efficiency and time to maximum tissue size in early, mid and late hatched larvae. At hatching, unresorbed yolk of early hatched larvae contained more energy (39.20 J) and more protein (0.99 mg) compared to the yolk of larvae that hatched later (38.13 J and 0.92 mg protein for late hatched larvae, p < 0.05). In contrast, a significant reduction in tissue weight (-0.7 mg DW) and protein content (-0.5 mg) was found in early hatched larvae compared to those which hatched later (p < 0.05). Between days 9 and 12 post-hatching (108 and 144 degree-days post-hatching), close to the final yolk resorption, late hatched larvae stopped growing and their tissue began to be resorbed. This tissue resorption time was delayed in early hatched larvae which presented at the end of the experiment a greater tissue weight than late hatched ones. Yolk conversion efficiency in term of energy from hatching to complete yolk resorption stage was significantly higher for early and mid hatched larvae (51%) compared to late hatched ones (44%) (p = 0.004). Furthermore, the time to maximum tissue size was found to be negatively related to hatching time which implies that early hatched larvae take longer time to switch from one developmental stage to the next. The maximum tissue dry weight and energy content were found to be reached at approximately the same age post-fertilization for both early hatched and late hatched larvae, suggesting that the principal steps in a fish's lifespan are better correlated with time of fertilization than hatching time.

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Growth and feeding of juvenile pike Esox lucius (Esocidae) of different hatching dates during its first months of life

Cited by 4 publications

References 0 publications

Effect of water temperature on egg incubation time and quality of newly hatched larvae of northern pike (Esox lucius L., 1758)

Effect of water temperature on egg incubation time and quality of newly hatched larvae of northern pike (Esox lucius L., 1758)

Untitled

The effect of hatching time on the bioenergetics of northern pike (Esox lucius) larvae from a single egg batch during the endogenous feeding period

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