Evaluation of Tank Shape and a Surface Spray for Intensive Culture of Larval Walleyes Fed Formulated Feed

Moore, Alan; Prange, Margaret A.; Summerfelt, Robert C.; Bushman, Richard P.

doi:10.1577/1548-8640(1994)056<0100:eotsaa>2.3.co;2

Cited by 30 publications

(19 citation statements)

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“…Absolute growth of pikeperch reared intensively with either a fish or a dry feed diet fry. The effect was similar to that observed in intensive rearing of walleye fry (Moore et al 1994). Nevertheless, the improvement in gas bladder inflation did not enhance the survival of pike-perch fry in tank culture.…”

Section: Experiments On Intensive Rearing Of Pike-perchsupporting

confidence: 82%

The status of pike-perch culture in Finland

Ruuhijärvi¹,

Hyvärinen²

1996

J Appl Ichthyol

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Pike‐perch (Stizostedion lucioperca (L.)) brood‐fish are captured from natural populations just before and during spawning time. One to three spawning pairs are put together with an artificial nest in a net‐cage. After spawning the eggs attached to the nest are transported to a hatchery 1 day before hatching begins. The production of newly hatched fry, 30 million in 1994, is used for fingerling production in ponds with natural food. The production of pike‐perch fingerlings in Finland increased rapidly in the 1980s and reached 10 million fish in 1994. The fingerlings are stocked into lakes particularly in central Finland, where many lakes lost their native pike‐perch populations in the 1960s. In some lakes pike‐perch fingerling stockings have been profitable and new populations have been established. Experiments on intensive rearing of newly‐hatched pike‐perch fry have not been successful. However, one‐summer‐old pond‐reared pike‐perch fingerlings are being reared intensively to provide captive brood fish.

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Section: Experiments On Intensive Rearing Of Pike-perchsupporting

confidence: 82%

The status of pike-perch culture in Finland

Ruuhijärvi¹,

Hyvärinen²

1996

J Appl Ichthyol

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“…Inflowing water volumes were 5 L/min in the cylindrical tanks and 2 L/min in the cuboidal tanks. Both tank designs were equipped with surface spray, which has been demonstrated to improve gas bladder inflation (Barrows et al 1993;Moore et al 1994a). Sprays delivered water at a rate of about 1 Wmin.…”

Section: Methodsmentioning

confidence: 99%

“…Moodie et al (1 992) reported 47% survival to 30 d in a "trough" and 13% in a cylindrical tank, but GBI was only 16% in the trough and 69% in the tank. Further advances in culture techniques have resulted in survival greater than 50% and GBI exceeding 90% (Barrows et al 1993;Moore et al 1994a;1994b).…”

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confidence: 99%

Performance of Larval Walleye Cultured Intensively in Clear and Turbid Water¹

Bristow

Summerfelt

1994

J World Aquaculture Soc

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Experiments were conducted to determine the performance of larval walleye (Stizostedion vitreum) reared in clear, 0.2 nephelometric turbidity units (NTU), and turbid water, 20 or 50 NTU, on formulated feed. Larvae were cultured for 21, 28, or 30 days posthatch in four trials with 3 or 4 replicate tanks per treatment (clear and turbid) in each trial. Duration of each trial was dependent on the arrival of newly hatched larvae for subsequent trials. The desired turbidity levels were obtained by pumping a solution of clay to the culture tanks every 20 (trial 1) or 30 min (trials 2, 3 and 4). Other than turbidity, all environmental conditions (dissolved oxygen, alkalinity, pH, total ammonia, un‐ionized ammonia, nitrate, nitrite, chloride, and hardness) and rearing techniques were similar between treatments. Larvae were stocked at 20/L and fed formulated feed (Fry Feed Kyowa B‐400 and B‐700) every 3 to 7 min, 24 hours per day. Significant differences in feed acceptance and total length between larvae in the clear and turbid water were observed as early as 7d posthatch. Larvae in turbid water began eating the formulated diet one to two days before those in clear water. In all trials, survival, final length, and final weight of larvae reared in water of high turbidity were significantly greater than for larvae reared in clear water. Mean survival (±SE) for all four trials was 27.7 ± 5.6% in high turbidity water and 5.9 ± 1.3% in clear water. At the end of the trials, mean total length of the larvae reared in turbid water was at least 3.2mm (15%) greater than that in the clear water. Mean final weight of the larvae from turbid water was 2.25 times greater than larvae from clear water over the four trials. In two of the four trials, gas bladder inflation (GBI) of larvae reared in high turbidity was significantly greater than for fish reared in clear water, but the difference in GBI was not significant in the other two trials. In this study, performance of larval walleye was greatly enhanced by water with a turbidity of at least IS NTU.

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“…Our laboratory has used embryos and larvae of Japanese medaka Oryzias latipes in toxicologic studies, and we have shown that failure of initial larval swim bladder inflation is a sensitive indicator of toxicant exposure during early development (Marty et al 1990b(Marty et al , 1991; however, the physiological significance of failure of swim bladder inflation in the Japanese medaka has not been determined. Other investigators have shown that fish without inflated swim bladders have decreased growth and survival (Chatain 1987) and are unusable for stocking purposes (Kindschi and Barrows 1993;Moore et al 1994). Failure of initial swim bladder inflation is recognized as a considerable obstacle to intensive rearing of many fish species (Colesante et al 1986;Bennett et al 1987;Battaglene and Talbot 1990;Chatain and Ounais-Guschemann 1990).…”

mentioning

confidence: 99%

Notes: Oxygen Consumption by Larval Japanese Medaka with Inflated or Uninflated Swim Bladders

Marty

Hinton

Cech

1995

Transactions of the American Fisheries Society

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Inflation and regulation of swim bladder volume enables fish to maintain position within the water column with minimal energy cost. Larvae whose swim bladders fail to inflate must move to stay suspended and would be expected to use additional energy to maintain position. As a relative measure of extra effort expended by fish with uninflated swim bladders, oxygen consumption rates at 26°C were compared for larval Japanese medaka Orvzias latipes with inflated and uninflated swim bladders. During the first 24 h after hatching, oxygen consumption rates were significantly higher for larvae with uninflated swim bladders (1.75 ± 0.13 μg O2·h−1·larva−1) than for those with inflated swim bladders (0.92 ± 0.05 μg O2·h−1·larva−1); after 96 h, oxygen consumption rates had decreased for all larvae to about 0.6 μg O2·h−1·larva−1. For larvae held in sealed containers for 72 h without access to free surface air, the volume of air‐saturated water required to maintain an adequate concentration of dissolved oxygen (>6 mg/L) was greater when swim bladders were uninflated (55 mL/ larva) than when swim bladders were inflated (36 mL/ larva).

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Evaluation of Tank Shape and a Surface Spray for Intensive Culture of Larval Walleyes Fed Formulated Feed

Cited by 30 publications

References 0 publications

The status of pike-perch culture in Finland

The status of pike-perch culture in Finland

Performance of Larval Walleye Cultured Intensively in Clear and Turbid Water¹

Notes: Oxygen Consumption by Larval Japanese Medaka with Inflated or Uninflated Swim Bladders

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Evaluation of Tank Shape and a Surface Spray for Intensive Culture of Larval Walleyes Fed Formulated Feed

Cited by 30 publications

References 0 publications

The status of pike-perch culture in Finland

The status of pike-perch culture in Finland

Performance of Larval Walleye Cultured Intensively in Clear and Turbid Water1

Notes: Oxygen Consumption by Larval Japanese Medaka with Inflated or Uninflated Swim Bladders

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Performance of Larval Walleye Cultured Intensively in Clear and Turbid Water¹