scholarly journals Effects of Delayed First Feeding on Larval Growth and Survival of Yesso Scallop (Patinopecten yessoensis)

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Zhongqiang Cai ◽  
Xiujun Sun ◽  
Aiguo Yang
Keyword(s):  
Larval Growth ◽  
Patinopecten Yessoensis ◽  
Growth And Survival ◽  
First Feeding ◽  
Yesso Scallop

scholarly journals Response of larval and juvenile rudd Scardinius erythrophthalmus (L.) to different diets under controlled conditions 331

2009 ◽  
Vol 54 (No. 7) ◽  
pp. 331-337 ◽  
Author(s):  
J. Wolnicki ◽  
J. Sikorska ◽  
R. Kamiński
Keyword(s):  
Larval Growth ◽  
Survival Rates ◽  
Fish Growth ◽  
Spinal Deformities ◽  
Growth And Survival ◽  
First Feeding ◽  
Scardinius Erythrophthalmus ◽  
Controlled Conditions ◽  
Final Survival

The growth and survival of rudd <I>Scardinius erythrophthalmus</I> (L.) were evaluated in a laboratory at 25°C. In 20-day Experiment 1, first-feeding larvae at the age of 4 days post-hatch (initially: TL = 5.7 mm, BW = 0.9 mg) were fed live <I>Artemia</I> nauplii or commercial dry feed (Aller Futura Larvae, AFL) or combinations of both. Even the longest period of initial feeding of nauplii (6 days) was insufficient to obtain satisfactory larval growth after weaning to AFL (TL = 12.4 mm and BW = 17.7 mg vs. TL = 18.9 mm and BW = 68.5 mg for the nauplii-fed fish, significant differences). Nauplii-fed older larvae (24 days post-hatch) were then used in Experiment 2, in which they were fed AFL or Ewos AgloNorse (EAN) dry feeds for 40 days. The EAN diet proved to be significantly (<I>P</I> ≤ 0.05) superior to AFL regarding the final fish growth (TL = 36.5 mm and BW = 506.8 mg vs. TL = 33.4 mm and BW = 392.0 mg ), final survival rates (97.6% vs. 100%) and the incidence of spinal deformities (0% vs. 13.5%).

scholarly journals Effects of prey concentration, light regime, and parental origin on growth and survival of herring larvae under controlled experimental conditions

2009 ◽  
Vol 66 (8) ◽  
pp. 1702-1709 ◽  
Author(s):  
Arild Folkvord ◽  
Hans Høie ◽  
Arne Johannessen ◽  
Turid Solbakken
Keyword(s):  
Larval Growth ◽  
Experimental Period ◽  
Light Regime ◽  
Parental Origin ◽  
Experimental Conditions ◽  
Prey Concentration ◽  
Growth And Survival ◽  
First Feeding ◽  
Period Constant ◽  
Spawning Periods

Abstract Folkvord, A., Høie, H., Johannessen, A., and Solbakken, T. 2009. Effects of prey concentration, light regime, and parental origin on growth and survival of herring larvae under controlled experimental conditions. – ICES Journal of Marine Science, 66: 1702–1709. Experiments were undertaken to study the combined effects of environmental (prey concentration and photoperiod) and genetic (parental spawning season) factors on growth and survival of herring larvae. During the experimental period, constant prey concentrations were maintained at one of the two nominal levels, under either a spring or an autumn light regime. Eggs of one autumn-spawning North Sea Buchan female herring were fertilized either with cryopreserved sperm from three Norwegian spring-spawning males or with fresh sperm from three Buchan males. Larvae of the two groups (the hybrids marked with alizarin) were mixed in replicated treatment tanks, thus ensuring identical environmental conditions. Mean larval growth rates were mostly influenced by food availability, but the hybrids grew significantly faster than the pure autumn-spawned offspring. In addition, the hybrids experienced a survival advantage at low prey concentrations. Hybrid survival was also somewhat better at high prey concentrations under a spring photoperiod than the corresponding group under an autumn photoperiod, suggesting a possible genetic adaptation to seasonal light conditions. The experiment documents the viability beyond first-feeding of offspring from parents with different spawning periods. The results are discussed in relation to herring metapopulation structure.

Effects of Pseudoalteromonas espejiana W115 on Enzyme Activity and Disease Resistance of the Yesso Scallop Patinopecten yessoensis

2019 ◽  
Vol 38 (3) ◽  
pp. 581
Author(s):  
Yuexin Ma ◽  
Jichen Liu ◽  
Ming Li ◽  
Wei Tao ◽  
Zhenlin Hao ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Disease Resistance ◽  
Patinopecten Yessoensis ◽  
Yesso Scallop

scholarly journals You Better Repeat It: Complex CO2 × Temperature Effects in Atlantic Silverside Offspring Revealed by Serial Experimentation

Diversity ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 69 ◽  
Author(s):  
Christopher Murray ◽  
Hannes Baumann
Keyword(s):  
Early Life ◽  
Larval Growth ◽  
Menidia Menidia ◽  
Embryo Survival ◽  
Single Experiment ◽  
Growth And Survival ◽  
Atlantic Silverside ◽  
Co2 Effects ◽  
Experimental Approaches ◽  
Temperature Interactions

Concurrent ocean warming and acidification demand experimental approaches that assess biological sensitivities to combined effects of these potential stressors. Here, we summarize five CO2 × temperature experiments on wild Atlantic silverside, Menidia menidia, offspring that were reared under factorial combinations of CO2 (nominal: 400, 2200, 4000, and 6000 µatm) and temperature (17, 20, 24, and 28 °C) to quantify the temperature-dependence of CO2 effects in early life growth and survival. Across experiments and temperature treatments, we found few significant CO2 effects on response traits. Survival effects were limited to a single experiment, where elevated CO2 exposure reduced embryo survival at 17 and 24 °C. Hatch length displayed CO2 × temperature interactions due largely to reduced hatch size at 24 °C in one experiment but increased length at 28 °C in another. We found no overall influence of CO2 on larval growth or survival to 9, 10, 15 and 13–22 days post-hatch, at 28, 24, 20, and 17 °C, respectively. Importantly, exposure to cooler (17 °C) and warmer (28 °C) than optimal rearing temperatures (24 °C) in this species did not appear to increase CO2 sensitivity. Repeated experimentation documented substantial inter- and intra-experiment variability, highlighting the need for experimental replication to more robustly constrain inherently variable responses. Taken together, these results demonstrate that the early life stages of this ecologically important forage fish appear largely tolerate to even extreme levels of CO2 across a broad thermal regime.

Response of Yesso scallop Patinopecten yessoensis to acute temperature challenge: physiological and biochemical parameters

2018 ◽  
Vol 37 (1) ◽  
pp. 321-329 ◽  
Author(s):  
Weiwei Jiang ◽  
Meirong Du ◽  
Jianguang Fang ◽  
Yaping Gao ◽  
Yuze Mao ◽  
...  
Keyword(s):  
Biochemical Parameters ◽  
Patinopecten Yessoensis ◽  
Yesso Scallop ◽  
Physiological And Biochemical

Effect of Prey Density and Prey Size on Growth and Survival of Juvenile Walleye (Stizostedion vitreum vitreum)

1989 ◽  
Vol 46 (8) ◽  
pp. 1323-1328 ◽  
Author(s):  
Michael G. Fox
Keyword(s):  
Prey Density ◽  
Prey Availability ◽  
Food Limitation ◽  
Survival Rates ◽  
Stizostedion Vitreum ◽  
Growth And Survival ◽  
First Feeding ◽  
Length Increase ◽  
Prey Length ◽  
Chironomid Biomass

I investigated the influence of food availability on growth and survival of walleye (Stizostedion vitreum vitreum) fry stocked in six fertilized experimental ponds (density 40 fish∙m−3) and reared for 8 wk. Walleye fed largely on chironomid larvae and cyclopoid copepods in weeks 1 and 2, and chironomids thereafter. Prey choice and consumption were strongly influenced by chironomid biomass in the benthos, and to a lesser extent by zoo-plankton density. Weekly length increase of the populations and mean length in week 7 were significantly correlated with chironomid benthic biomass and mean prey length. Chironomid biomass and density of large zoo-plankton together explained 56% of the variation in the weekly population growth rate. Despite obvious food limitation in the second half of the experiment, pond survival rate was not significantly correlated with mean prey density, mean stomach fullness, or percentage of fish with empty stomachs. The results indicate that juvenile walleye growth can be regulated by the density and size of available prey. Prey availability apparently does not regulate short term juvenile walleye survival rates after the period around first feeding.

scholarly journals Model construction and optimization of larval growth and survival in the pearl oyster, Pinctada fucata

2020 ◽  
Vol 18 ◽  
pp. 100526
Author(s):  
Hui Wang ◽  
Chaopeng Xue ◽  
Long Wang ◽  
Yi Zhang ◽  
Nengwei Zang ◽  
...  
Keyword(s):  
Larval Growth ◽  
Pearl Oyster ◽  
Pinctada Fucata ◽  
Model Construction ◽  
Growth And Survival
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