NDLI: Juvenile Ribbontail Stingray, Taeniura lymma (Forsskål, 1775) (Chondrichthyes, Dasyatidae), demonstrate a unique suite of physiological adaptations to survive hyperthermic nursery conditions

Content Provider	Springer Nature Link
Author	Dabruzzi, Theresa F. Bennett, Wayne A. Rummer, Jodie L. Fangue, Nann A.
Copyright Year	2012
Abstract	Juvenile ribbontail stingrays, Taeniura lymma (Forsskål, 1775) of the tropical West Pacific inhabit mangal and seagrass nurseries that often experience rapid and extreme increases in water temperature. We hypothesized that juvenile rays possess a thermal strategy similar to other hyperthermic specialists, in which fish prefer high temperatures, are always prepared for thermal extremes regardless of previous thermal history, and exhibit low metabolic thermal sensitivity. Critical thermal methodology was used to determine the thermal niche, and a thermal gradient used to estimate stingray final preferendum. Temperature quotients (Q 10) were calculated from metabolic rates determined at three temperatures using flow-through respirometry. As predicted, juvenile rays showed a relatively small thermal niche dominated by intrinsic tolerance with limited capacity for acclimation. Thermal preference values were higher than those reported for other elasmobranch species. Interestingly, the temperature quotient for juvenile rays was higher than expected, suggesting that these fish may have the ability to exploit the thermal heterogeneity in their environment. Temperature likely acts as a directing factor in this species, separating warm tolerant juveniles from adults living in deeper, cooler waters.
Starting Page	37
Ending Page	49
Page Count	13
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	701
Issue Number	1
e-ISSN	15735117
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-07-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Temperature preference Q 10 Metabolism Temperature tolerance polygon CTM Elasmobranch Freshwater & Marine Ecology Ecology Zoology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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Juvenile Ribbontail Stingray, Taeniura lymma (Forsskål, 1775) (Chondrichthyes, Dasyatidae), demonstrate a unique suite of physiological adaptations to survive hyperthermic nursery conditions

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