Thermal Requirements of the Bonytail (Gila elegans): Application to Propagation and Thermal-Regime Management of Rivers of the Colorado River Basin
We performed experimental trials on hatchery-reared juvenile bonytails (Gila elegans) using the acclimated-chronic-exposure method. Bonytails were exposed to 8–30°C for 112 days to determine effects on growth, condition factor, composition of body, and survival. Survival was ≥98% for all treatments....
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| Veröffentlicht in: | The Southwestern naturalist 2012-12, Vol.57 (4), p.421-429 |
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| creator | Kappenman, Kevin M Cureton, Elijah S Ilgen, Jason Toner, Matt Fraser, William C Kindschi, Greg A |
| description | We performed experimental trials on hatchery-reared juvenile bonytails (Gila elegans) using the acclimated-chronic-exposure method. Bonytails were exposed to 8–30°C for 112 days to determine effects on growth, condition factor, composition of body, and survival. Survival was ≥98% for all treatments. The predicted temperature was 25.9°C for maximum gain in weight and 14.2°C for zero gain. Temperatures |
| doi_str_mv | 10.1894/0038-4909-57.4.421 |
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Bonytails were exposed to 8–30°C for 112 days to determine effects on growth, condition factor, composition of body, and survival. Survival was ≥98% for all treatments. The predicted temperature was 25.9°C for maximum gain in weight and 14.2°C for zero gain. Temperatures <14°C depressed growth, 14–20°C provided incremental growth, and 22–26°C allowed accelerated growth. We hypothesize that temperatures during propagation and seasonal temperatures of rivers that are 22–26°C, or both, would maximize growth of juveniles and might promote higher survival because bonytails would be less vulnerable to predation, and have greater energy reserves and increased metabolic efficiency. Subadultos de la carpa elegante (Gila elegans) criados en cautiverio fueron sometidos a pruebas experimentales utilizando el método de aclimatación y exposición crónica. Utilizamos exposiciones entre 8 y 30°C con una duración de 112 días para determinar los efectos en el crecimiento, condición, composición corporal, y sobrevivencia. La sobrevivencia fue ≥98% en todos los tratamientos. Las temperaturas predichas para obtener crecimiento de peso máximo y de cero fueron de 25.9°C y 14.2°C, respectivamente. Temperaturas <14°C impidieron el crecimiento, las entre 14 y 20°C incrementaron el crecimiento gradual, mientras que las entre 22–26°C aceleraron el crecimiento. Proponemos la hipótesis de que las temperaturas durante la propagación y las temperaturas estacionales de los ríos entre 22–26°C, o ambas, pueden maximizar el crecimiento de los juveniles y pueden promover más alta sobrevivencia porque las carpas elegantes serán menos vulnerables a ala depredación, y tendrán más reservas energéticas e incrementarán su eficiencia metabólica.</description><identifier>ISSN: 0038-4909</identifier><identifier>EISSN: 1943-6262</identifier><identifier>DOI: 10.1894/0038-4909-57.4.421</identifier><language>eng</language><publisher>Department of Biology, Box 1651, Edwardsville, IL 62026: The Southwestern Association of Naturalists Southern Illinois University Edwardsville</publisher><subject>Animal behavior ; Basins (Geology) ; Body temperature ; Cyprinidae ; Diet ; Environmental aspects ; FEATURE ARTICLES ; Fish ; Fish hatcheries ; Fisheries ; Freshwater ; Freshwater fishes ; Gila elegans ; Growth ; Lipids ; Measurement ; Mortality ; River basins ; Rivers ; Stream ecology ; Trout ; Water temperature ; Wildlife conservation ; Wildlife management ; Young animals</subject><ispartof>The Southwestern naturalist, 2012-12, Vol.57 (4), p.421-429</ispartof><rights>COPYRIGHT 2012 Southwestern Association of Naturalists</rights><rights>Copyright Southwestern Association of Naturalists Dec 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b496t-18ab5d18c93c7f5dadcc09a0e5dc9dbf546f15f1424ef762a69990780277a4e63</citedby><cites>FETCH-LOGICAL-b496t-18ab5d18c93c7f5dadcc09a0e5dc9dbf546f15f1424ef762a69990780277a4e63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/23362586$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/23362586$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,58017,58250</link.rule.ids></links><search><creatorcontrib>Kappenman, Kevin M</creatorcontrib><creatorcontrib>Cureton, Elijah S</creatorcontrib><creatorcontrib>Ilgen, Jason</creatorcontrib><creatorcontrib>Toner, Matt</creatorcontrib><creatorcontrib>Fraser, William C</creatorcontrib><creatorcontrib>Kindschi, Greg A</creatorcontrib><title>Thermal Requirements of the Bonytail (Gila elegans): Application to Propagation and Thermal-Regime Management of Rivers of the Colorado River Basin</title><title>The Southwestern naturalist</title><description>We performed experimental trials on hatchery-reared juvenile bonytails (Gila elegans) using the acclimated-chronic-exposure method. Bonytails were exposed to 8–30°C for 112 days to determine effects on growth, condition factor, composition of body, and survival. Survival was ≥98% for all treatments. The predicted temperature was 25.9°C for maximum gain in weight and 14.2°C for zero gain. Temperatures <14°C depressed growth, 14–20°C provided incremental growth, and 22–26°C allowed accelerated growth. We hypothesize that temperatures during propagation and seasonal temperatures of rivers that are 22–26°C, or both, would maximize growth of juveniles and might promote higher survival because bonytails would be less vulnerable to predation, and have greater energy reserves and increased metabolic efficiency. Subadultos de la carpa elegante (Gila elegans) criados en cautiverio fueron sometidos a pruebas experimentales utilizando el método de aclimatación y exposición crónica. Utilizamos exposiciones entre 8 y 30°C con una duración de 112 días para determinar los efectos en el crecimiento, condición, composición corporal, y sobrevivencia. La sobrevivencia fue ≥98% en todos los tratamientos. Las temperaturas predichas para obtener crecimiento de peso máximo y de cero fueron de 25.9°C y 14.2°C, respectivamente. Temperaturas <14°C impidieron el crecimiento, las entre 14 y 20°C incrementaron el crecimiento gradual, mientras que las entre 22–26°C aceleraron el crecimiento. Proponemos la hipótesis de que las temperaturas durante la propagación y las temperaturas estacionales de los ríos entre 22–26°C, o ambas, pueden maximizar el crecimiento de los juveniles y pueden promover más alta sobrevivencia porque las carpas elegantes serán menos vulnerables a ala depredación, y tendrán más reservas energéticas e incrementarán su eficiencia metabólica.</description><subject>Animal behavior</subject><subject>Basins (Geology)</subject><subject>Body temperature</subject><subject>Cyprinidae</subject><subject>Diet</subject><subject>Environmental aspects</subject><subject>FEATURE ARTICLES</subject><subject>Fish</subject><subject>Fish hatcheries</subject><subject>Fisheries</subject><subject>Freshwater</subject><subject>Freshwater fishes</subject><subject>Gila elegans</subject><subject>Growth</subject><subject>Lipids</subject><subject>Measurement</subject><subject>Mortality</subject><subject>River basins</subject><subject>Rivers</subject><subject>Stream 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Propagation and Thermal-Regime Management of Rivers of the Colorado River Basin</atitle><jtitle>The Southwestern naturalist</jtitle><date>2012-12-01</date><risdate>2012</risdate><volume>57</volume><issue>4</issue><spage>421</spage><epage>429</epage><pages>421-429</pages><issn>0038-4909</issn><eissn>1943-6262</eissn><abstract>We performed experimental trials on hatchery-reared juvenile bonytails (Gila elegans) using the acclimated-chronic-exposure method. Bonytails were exposed to 8–30°C for 112 days to determine effects on growth, condition factor, composition of body, and survival. Survival was ≥98% for all treatments. The predicted temperature was 25.9°C for maximum gain in weight and 14.2°C for zero gain. Temperatures <14°C depressed growth, 14–20°C provided incremental growth, and 22–26°C allowed accelerated growth. We hypothesize that temperatures during propagation and seasonal temperatures of rivers that are 22–26°C, or both, would maximize growth of juveniles and might promote higher survival because bonytails would be less vulnerable to predation, and have greater energy reserves and increased metabolic efficiency. Subadultos de la carpa elegante (Gila elegans) criados en cautiverio fueron sometidos a pruebas experimentales utilizando el método de aclimatación y exposición crónica. Utilizamos exposiciones entre 8 y 30°C con una duración de 112 días para determinar los efectos en el crecimiento, condición, composición corporal, y sobrevivencia. La sobrevivencia fue ≥98% en todos los tratamientos. Las temperaturas predichas para obtener crecimiento de peso máximo y de cero fueron de 25.9°C y 14.2°C, respectivamente. Temperaturas <14°C impidieron el crecimiento, las entre 14 y 20°C incrementaron el crecimiento gradual, mientras que las entre 22–26°C aceleraron el crecimiento. Proponemos la hipótesis de que las temperaturas durante la propagación y las temperaturas estacionales de los ríos entre 22–26°C, o ambas, pueden maximizar el crecimiento de los juveniles y pueden promover más alta sobrevivencia porque las carpas elegantes serán menos vulnerables a ala depredación, y tendrán más reservas energéticas e incrementarán su eficiencia metabólica.</abstract><cop>Department of Biology, Box 1651, Edwardsville, IL 62026</cop><pub>The Southwestern Association of Naturalists Southern Illinois University Edwardsville</pub><doi>10.1894/0038-4909-57.4.421</doi><tpages>9</tpages></addata></record> |
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| identifier | ISSN: 0038-4909 |
| ispartof | The Southwestern naturalist, 2012-12, Vol.57 (4), p.421-429 |
| issn | 0038-4909 1943-6262 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1328516217 |
| source | JSTOR All Journals |
| subjects | Animal behavior Basins (Geology) Body temperature Cyprinidae Diet Environmental aspects FEATURE ARTICLES Fish Fish hatcheries Fisheries Freshwater Freshwater fishes Gila elegans Growth Lipids Measurement Mortality River basins Rivers Stream ecology Trout Water temperature Wildlife conservation Wildlife management Young animals |
| title | Thermal Requirements of the Bonytail (Gila elegans): Application to Propagation and Thermal-Regime Management of Rivers of the Colorado River Basin |
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