Matches in SemOpenAlex for { <https://semopenalex.org/work/W2766076304> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W2766076304 abstract "Author(s): Korsmeyer, Keith E. | Abstract: Oxygen transport and cardiovascular responses to exercise and environmental changes were studied in swimming yellowfin tuna (Thunnus albacares). a high performance teleost. Use of a large water tunnel permitted measurements of heart rate (fH), relative stroke volume (SV), and arterial and venous blood-gas variables during increases in swimming velocity or rapid changes in ambient temperature and oxygen content that simulated vertical migrations through the thermocline.In addition. a model of aerobic swimming performance for a 50 cm yellowfin was developed, based on the oxygen delivery potential of the cardiovascular system, and oxygen demand during swimming. This model predicts a lower maximal sustained (aerobic) velocity (~3-4 fork lengths [FL]/s) compared to previous estimates. This model also predicts that the rate of total oxygen consumption is not maximal at the maximal sustained velocity, suggesting that additional aerobic scope is available for other high oxygen demand metabolic functions (e.g., digestion. oxygen debt recovery, and growth).Measured FHs, although highly variable among individuals, were generally lower than previously reported, averaging from 68 to 102 bpm with a velocity increase from 1.0 to 2.9 FL/s. These FHs are comparable to other active teleosts at similar velocities. A significant bradycardia developed at an oxygen tension of 16.1 kPa O2, and fH was very sensitive to changes in temperature (Q10 = 2.37, 28°C to l8°C).Relative SV measurements revealed a slight decrease with exercise (mean 3.9%), indicating that, unlike most other fishes, cardiac output in the yellowfin is regulated primarily through changes in fH. However, SV increased with a drop in temperature, moderating the effect of fH on cardiac output (Q10 = 1.52).Yellowfin blood has a high-oxygen carrying capacity (16 to 18 ml O2/dl) and a low in vivo oxygen affinity (P50 = 5.3 kPa). Exercise caused in rise in arterial (74 to 88%) and a decline in venous oxygen saturation (48 to 44%), increasing the arterial-venous oxygen content difference [(a-v)O2], but leaving a large venous oxygen reserve. It is estimated that cardiac output and (a-v)O2 contributed equally to the increased oxygen uptake.xviii" @default.
- W2766076304 created "2017-11-10" @default.
- W2766076304 creator A5065531579 @default.
- W2766076304 date "1996-01-01" @default.
- W2766076304 modified "2023-09-26" @default.
- W2766076304 title "A Study of Cardiovascular Function in Swimming Tuna" @default.
- W2766076304 hasPublicationYear "1996" @default.
- W2766076304 type Work @default.
- W2766076304 sameAs 2766076304 @default.
- W2766076304 citedByCount "1" @default.
- W2766076304 crossrefType "journal-article" @default.
- W2766076304 hasAuthorship W2766076304A5065531579 @default.
- W2766076304 hasConcept C126322002 @default.
- W2766076304 hasConcept C140793950 @default.
- W2766076304 hasConcept C164705383 @default.
- W2766076304 hasConcept C178790620 @default.
- W2766076304 hasConcept C185592680 @default.
- W2766076304 hasConcept C2777953023 @default.
- W2766076304 hasConcept C2779656528 @default.
- W2766076304 hasConcept C2780532849 @default.
- W2766076304 hasConcept C2909208804 @default.
- W2766076304 hasConcept C505870484 @default.
- W2766076304 hasConcept C540031477 @default.
- W2766076304 hasConcept C71924100 @default.
- W2766076304 hasConcept C84393581 @default.
- W2766076304 hasConcept C86803240 @default.
- W2766076304 hasConceptScore W2766076304C126322002 @default.
- W2766076304 hasConceptScore W2766076304C140793950 @default.
- W2766076304 hasConceptScore W2766076304C164705383 @default.
- W2766076304 hasConceptScore W2766076304C178790620 @default.
- W2766076304 hasConceptScore W2766076304C185592680 @default.
- W2766076304 hasConceptScore W2766076304C2777953023 @default.
- W2766076304 hasConceptScore W2766076304C2779656528 @default.
- W2766076304 hasConceptScore W2766076304C2780532849 @default.
- W2766076304 hasConceptScore W2766076304C2909208804 @default.
- W2766076304 hasConceptScore W2766076304C505870484 @default.
- W2766076304 hasConceptScore W2766076304C540031477 @default.
- W2766076304 hasConceptScore W2766076304C71924100 @default.
- W2766076304 hasConceptScore W2766076304C84393581 @default.
- W2766076304 hasConceptScore W2766076304C86803240 @default.
- W2766076304 hasLocation W27660763041 @default.
- W2766076304 hasOpenAccess W2766076304 @default.
- W2766076304 hasPrimaryLocation W27660763041 @default.
- W2766076304 hasRelatedWork W118858231 @default.
- W2766076304 hasRelatedWork W1501590640 @default.
- W2766076304 hasRelatedWork W1858114804 @default.
- W2766076304 hasRelatedWork W1929168181 @default.
- W2766076304 hasRelatedWork W1965366099 @default.
- W2766076304 hasRelatedWork W2071140826 @default.
- W2766076304 hasRelatedWork W2076798587 @default.
- W2766076304 hasRelatedWork W2081781056 @default.
- W2766076304 hasRelatedWork W2121350517 @default.
- W2766076304 hasRelatedWork W2137793727 @default.
- W2766076304 hasRelatedWork W2143998609 @default.
- W2766076304 hasRelatedWork W2182005761 @default.
- W2766076304 hasRelatedWork W2182717512 @default.
- W2766076304 hasRelatedWork W2270529514 @default.
- W2766076304 hasRelatedWork W2285536160 @default.
- W2766076304 hasRelatedWork W2336672352 @default.
- W2766076304 hasRelatedWork W2345293171 @default.
- W2766076304 hasRelatedWork W2402739618 @default.
- W2766076304 hasRelatedWork W2412128601 @default.
- W2766076304 hasRelatedWork W2468161182 @default.
- W2766076304 isParatext "false" @default.
- W2766076304 isRetracted "false" @default.
- W2766076304 magId "2766076304" @default.
- W2766076304 workType "article" @default.