Design of a computerized, temperature-controlled, recirculating aquaria system

Widmer, Ann M.; Carveth, Corissa J.; Keffler, John; Bonar, Scott A.

doi:10.1016/j.aquaeng.2005.11.001

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…Treatments were initiated in a 36-tank recirculating system described by Widmer et al (2006) and Recsetar and Bonar (2013). Each tank was equipped with an air stone, a biological sponge filter, and equal amounts of cracked clay pots to provide cover for the crayfish.…”

Section: Methodsmentioning

confidence: 99%

Effectiveness of Two Commercial Rotenone Formulations in the Eradication of Virile Crayfish Orconectes virilis

Recsetar

Bonar

2015

N American J Fish Manag

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The virile or northern crayfish Orconectes virilis is an invasive species throughout much of the USA, damaging aquatic communities where it is introduced. Therefore, identification of effective methods for its eradication from areas in which it is unwanted is important. We studied the effectiveness of two commercial formulations of rotenone, Chem Fish Regular and CFT Legumine, for virile crayfish control. Although both formulations were effective for fish eradication, earlier observations by fisheries managers suggested that the relative effectiveness of the two formulations differs for crayfish. The only noteworthy difference between the formulations is that the former contains a synergist. In our first experiment, we tested each toxicant at the maximum labeled dosage (5 ppm) and found CFT Legumine to be 100% ineffective (0% mortality), while the Chem Fish Regular treatment resulted in 12.5% mortality. After we deemed Chem Fish Regular to be the only toxicant with any effectiveness against virile crayfish, we tested concentrations from 5 to 50 ppm and found 10 times the maximum labeled dosage (50 ppm rotenone) was needed to kill all virile crayfish. Because crayfish burrow and can leave water, and because 100% eradication is usually desired, rotenone applied at the labeled rates will not be effective for crayfish control. However, treating a body of water with CFT Legumine to eradicate invasive fish while leaving desirable crayfish unharmed is possible.

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Section: Methodsmentioning

confidence: 99%

Effectiveness of Two Commercial Rotenone Formulations in the Eradication of Virile Crayfish Orconectes virilis

Recsetar

Bonar

2015

N American J Fish Manag

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“…However, ascertaining a useful metric that describes a species' thermal limits when the fish are subjected to a diel fluctuation is difficult because of the complexity of variables that describe a diel temperature cycle (i.e., phase duration, magnitude of the cycle, temperature minimum, and temperature maximum). Laboratory systems that are designed to mimic diel temperature fluctuations are also difficult to build and operate (Widmer et al 2006b).…”

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confidence: 99%

Upper Thermal Tolerances of Rio Grande Cutthroat Trout under Constant and Fluctuating Temperatures

Zeigler¹,

Brinkman²,

Caldwell³

et al. 2013

Trans Am Fish Soc

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The Rio Grande Cutthroat Trout Oncorhynchus clarkii virginalis is the southernmost subspecies of Cutthroat Trout, and as with the other subspecies, stream temperature regulates growth, reproductive success, distribution, and survival. An understanding of the upper thermal tolerance of Rio Grande Cutthroat Trout is important for developing water temperature standards and for assessing suitable habitat for reintroduction and management. Hatch success of Rio Grande Cutthroat Trout eggs was determined under static temperatures. The thermal requirements of fry and juveniles were also assessed under static and fluctuating temperature regimes using the acclimated chronic exposure method. Egg hatch success was 46-70% from 6 • C to 16 • C but declined significantly at 18 • C and 20 • C. Maximum growth of fry that were fed to satiation occurred at 15.3 • C. The 30-d ultimate upper incipient lethal temperature (UUILT) was 22.6 • C for fry and 21.7 • C for juveniles. Survival during fluctuating temperature experiments was dependent upon the daily maximum temperature and the daily fluctuation. The upper thermal limits for Rio Grande Cutthroat Trout were lower than those of Rainbow Trout O. mykiss but similar to those of other Cutthroat Trout subspecies. The low UUILT of Rio Grande Cutthroat Trout relative to some salmonids may increase the risk of deleterious effects brought about by a changing climate, habitat alteration, and sympatric nonnative salmonids, which are known to outcompete Cutthroat Trout at temperatures above the species' optimal range. Daily mean water temperatures near the Rio Grande Cutthroat Trout's optimal growth temperature of 15 • C would be suitable 1395 1396 ZEIGLER ET AL.for reintroduction of this subspecies. Depending on the daily temperature fluctuation, daily maximum temperatures within reintroduction streams and current habitat should remain at or below 25 • C to ensure long-term persistence of a Rio Grande Cutthroat Trout population. This information will aid in establishing water quality standards to protect habitat where the subspecies currently occurs.

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“…Uneaten food and wastes were siphoned each day. Water was mixed to obtain the target treatment temperatures Widmer et al (2006b), and pumped into each tank for 3 min every 0.5 h. Temperature for each tank was recorded every 10 min using thermocouples calibrated to be within §0.5 C and integrated with Labview software (National Instruments, Austin, Texas) for monitoring and controlling tank temperatures. Water was continuously circulated through an 1,800-L sump tank filled with filter media through an ultraviolet sterilizer (COM6390-UL, Emperor Aquatics, Pottstown, Pennsylvania) and two Pentair cartridge filters (CC75, Moonpark, California) before being pumped back to head tanks equipped with heaters and chillers.…”

Section: Methodsmentioning

confidence: 99%

Growth and Survival of Apache Trout Under Static and Fluctuating Temperature Regimes

2014

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Increasing stream temperatures have important implications for arid‐region fishes. Little is known about effects of high water temperatures that fluctuate over extended periods on Apache Trout Oncorhynchus gilae apache, a federally threatened species of southwestern USA streams. We compared survival and growth of juvenile Apache Trout held for 30 d in static temperatures (16, 19, 22, 25, and 28°C) and fluctuating diel temperatures (±3°C from 16, 19, 22 and 25°C midpoints and ±6°C from 19°C and 22°C midpoints). Lethal temperature for 50% (LT50) of the Apache Trout under static temperatures (mean [SD] = 22.8 [0.6]°C) was similar to that of ±3°C diel temperature fluctuations (23.1 [0.1]°C). Mean LT50 for the midpoint of the ±6°C fluctuations could not be calculated because survival in the two treatments (19 ± 6°C and 22 ± 6°C) was not below 50%; however, it probably was also between 22°C and 25°C because the upper limb of a ±6°C fluctuation on a 25°C midpoint is above critical thermal maximum for Apache Trout (28.5–30.4°C). Growth decreased as temperatures approached the LT50. Apache Trout can survive short‐term exposure to water temperatures with daily maxima that remain below 25°C and midpoint diel temperatures below 22°C. However, median summer stream temperatures must remain below 19°C for best growth and even lower if daily fluctuations are high (≥12°C). Received June 26, 2013; accepted May 19, 2014

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Design of a computerized, temperature-controlled, recirculating aquaria system

Cited by 7 publications

References 9 publications

Effectiveness of Two Commercial Rotenone Formulations in the Eradication of Virile Crayfish Orconectes virilis

Effectiveness of Two Commercial Rotenone Formulations in the Eradication of Virile Crayfish Orconectes virilis

Upper Thermal Tolerances of Rio Grande Cutthroat Trout under Constant and Fluctuating Temperatures

Growth and Survival of Apache Trout Under Static and Fluctuating Temperature Regimes

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