Enzymatic mechanisms during temperature acclimation of the blue crab, Callinectes sapidus—I. Oxygen consumption and activity of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase

Robert, Marjorie; Gray, Irving

doi:10.1016/0305-0491(72)90254-4

Cited by 9 publications

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The organisms from high latitudes (where the climate is cold), consume more oxygen than individuals from lower latitudes at the same temperature (Wohlschlag et al, 1968;Robert & Gray, 1972;Laird & Haefner, 1976). The explanation offered by these authors involves enzymatic adjustments for such compensations.…”

Section: Discussionmentioning

confidence: 92%

Salinity, Temperature, and Seasonality Effects on the Metabolic Rate of the Brown Shrimp Farfantepenaeus aztecus (Ives, 1891) (Decapoda, Penaeidae) from the Coastal Gulf of Mexico

Gómez-Aguirre

González-Mora

Soto

et al. 2011

Crustac

View full text Add to dashboard Cite

The routine metabolic rate (QO 2 in mg O 2 g −1 DW h −1 ) was measured in juveniles of the brown shrimp, Farfantepenaeus aztecus (Ives, 1891) at salinity and temperature ranges prevailing during the cold and warm seasons at the coastal lagoon of Tamiahua, Veracruz, Mexico. A semiclosed respirometer was employed, with eight 4-L experimental chambers, each containing two shrimp of similar size and sex. The shrimp were fasting and in the intermoult stage, and acclimated to the chambers for 12 h prior to determining oxygen consumption. Oxygen measurements were taken every two hours with a partial replacement of water and aeration of one hour between readings. In a 24 h cycle, 6 to 8 measurements were made. Relations between QO 2 and DW, for the different salinity and temperature conditions tested, were calculated and adjusted to the equation: QO 2 = αDW β . Two-way ANOVA was applied to analyse the effect of salinity, temperature, time of day, and body weight on F. aztecus QO 2 . Salinity had no significant (p > 0.05) effect upon the shrimp's routine metabolic rate at intervals of 26 to 34 psu and 22 to 36 psu, typical of the cold and warm seasons, respectively. However, seasonal temperature variation did significantly affect the shrimp's QO 2 , thus suggesting the existence of a different "pattern of acclimatization" in the energy requirements of the individuals from both seasons. The results indicate that the population of F. aztecus from this area of the Gulf of Mexico may represent a "cline", the physiological response of the components of which differs from that of other brown shrimp populations distributed over a wide geographical range in the western tropical Atlantic. RESUMENSe midió la tasa metabólica de rutina (QO 2 : mg O 2 g −1 PS h −1 ) en camarones juveniles de la especie Farfantepenaeus aztecus (Ives, 1891), en regímenes de salinidad -temperatura típicos de

show abstract

Section: Discussionmentioning

confidence: 92%