Temperature effects on the blood oxygen affinity in sharks

  title={Temperature effects on the blood oxygen affinity in sharks},
  author={Diego Bernal and Joseph Pignatello Reid and Julie M. Roessig and Shinsyu Matsumoto and Chugey A. Sepulveda and Joseph J. Jr. Cech and Jeffrey B. Graham},
  journal={Fish Physiology and Biochemistry},
In fish, regional endothermy (i.e., the capacity to significantly elevate tissue temperatures above ambient via vascular heat exchangers) in the red swimming muscles (RM) has evolved only in a few marine groups (e.g., sharks: Lamnidae, Alopiidae, and teleosts Scombridae). Within these taxa, several species have also been shown to share similar physiological adaptations to enhance oxygen delivery to the working tissues. Although the hemoglobin (Hb) of most fish has a decreased affinity for… 
Thermal tolerance and hypoxia tolerance are associated in blacktip reef shark (Carcharhinus melanopterus) neonates
Thermal tolerance is associated with hypoxia tolerance in blacktip reef shark (Carcharhinus melanopterus) neonates and the association between thermal tolerance and hypoxIA tolerance suggests a common mechanism warranting further investigation.
Estimating oxygen uptake rates to understand stress in sharks and rays
Oxygen uptake rates can be applied to predict population-level responses to stressors by quantifying associations between fitness-related processes, spatial ecology, and impact on ecosystem function (via bioenergetics modelling).
The effects of predicted climate change conditions on tropical sharks
Myriad anthropogenic impacts drive declines in global shark populations; yet, the consequences of a newly recognised threat, global climate change, are poorly understood. This thesis tested the
Examining Shortfin Mako and Blue Shark Movements in Relation to the Southern California Bight Oxygen Minimum Zone
Author(s): Banez, Thompson | Abstract: In the summer months shortfin makos (Isurus oxyrinchus), blue sharks (Prionace glauca) and North Pacific swordfish (Xiphias gladius) inhabit the highly
Horizontal and Vertical Movement Patterns and Habitat Use of Juvenile Porbeagles (Lamna nasus) in the Western North Atlantic
The porbeagle (Lamna nasus) is a large, highly migratory endothermic shark broadly distributed in the higher latitudes of the Atlantic, South Pacific, and Indian Oceans. In the North Atlantic, the
Capture-induced exertional rhabdomyolysis in the Shortfin Mako Shark, Isurus oxyrinchus.
  • N. Otway
  • Medicine
    Veterinary clinical pathology
  • 2020
Pupils caring for sharks and rays should consider collecting urine from free-living or aquarium animals when they are captured for examination and/or treatment, particularly at times with maximal seawater temperatures.
Dead tired: evaluating the physiological status and survival of neonatal reef sharks under stress
It is demonstrated species-specific physiological responses of newborn reef sharks upon brief gill-net capture during summer months and Carcharhinus melanopterus and Negaprion acutidens were resilient to stress within a narrow temperature range and under ideal capture conditions.
The Impacts Of Acute Hypoxic Exposure And Other Concomitant Stressors On The Cardiorespiratory Physiology Of Coastal Elasmobranch Fishes
The results allowed us to assess the effects of acute temperature change and elevated pCO2 on the metabolic rates and hypoxia tolerances of clearnose skate, summer flounder, and thorny skate.
Description and alleviation of the stress response in Atlantic sharpnose sharks (rhizoprionodon terraenovae), white-spotted bamboo sharks (chiloscyllium plagiosum), and golden shiners (notemigonus crysoleucas)
This paper presents a meta-analysis of the responses of blacktip and white-spotted bamboo sharks to air exposure and the effects of iso-eugenol on stress and respiration rates of Atlantic sharpnose sharks.
Global assessment of shark strandings


Mammal-like muscles power swimming in a cold-water shark
It is shown that the salmon shark, a lamnid inhabiting cold, north Pacific waters, has become so specialized for endothermy that its red, aerobic, locomotor muscles, which power continuous swimming, seem mammal-like, functioning only within a markedly elevated temperature range (20–30 °C).
Temperature effects on blood‐oxygen equilibria in relation to movements of the bat ray, Myliobatis Californica in tomales bay, California
In vitro blood‐oxygen binding curves for the bat ray were constructed at four temperatures to gain insight into the possible adaptations to ambient temperature regimes in Tomales Bay, California and the heightened sensitivity between 14 and 20°C parallels a previously‐documented large change in respiratory demand.
Evolution and Consequences of Endothermy in Fishes
Comparisons of tunas and their ectothermic sister species (mackerels and bonitos) provide no direct support of the hypothesis that endothermy results in increased aerobic swimming speeds, slow‐oxidative muscle power, or energetic efficiency.
Water-tunnel studies of heat balance in swimming mako sharks.
The findings for mako red muscle are similar to those recorded for tunas and suggest modulation of retial heat-exchange efficiency as the underlying mechanism controlling heat balance, however, the red muscle temperatures measured in swimming makos are cooler than those measured previously in larger decked mako.
Temperature-Induced Changes in Blood Gas Equilibria in the Albacore, Thunnus Alalunga, a Warm-Bodied Tuna
Samples of unbuffered, whole blood from freshly-caught albacore ( Thunnus alalunga Bonnaterre) were equilibrated at 5, 10, 15, 20, 25, 30 and 35 °C and at 0 and 1 % CO 2 for construction of oxygen
Blood oxygen-binding characteristics of bigeye tuna (Thunnus obesus), a high-energy-demand teleost that is tolerant of low ambient oxygen
It is suggested that bigeye tuna are more tolerant of low ambient oxygen than other tuna species, and support similar conclusions derived from laboratory whole-animal studies, depth-of-capture data, and directly-recorded vertical movements of fish in the open ocean.
The temperature range (10-30 °C) over which the albacore haemoglobin-oxygen binding exhibits the reversed thermal effect closely matches the maximum thermal gradient typically present in this fish, suggesting that its highly specialized haem oxygen dissociation characteristics evolved within and now establishes thermal limits upon the existing geographic distribution of this species.
Review: Analysis of the evolutionary convergence for high performance swimming in lamnid sharks and tunas.
Acid-base balance in cold-blooded vertebrates as a function of body temperature.
Arterial blood pH values of unanesthetized frogs, toads, and turtles vary inversely with the temperature to which the animal has been acclimated so the ratio OH-/H+ (antilog pH -pOH) must also be constant over the temperature range studied.
ATP-induced Reverse Temperature Effect in Isohemoglobins from the Endothermic Porbeagle Shark (Lamna nasus)*
The mechanism behind the reverse temperature effect resembles that found in the bluefin tuna (Thunnus thynnus), an endothermic teleost, thus evidencing further convergent evolution.