Air breathing minimizes post-exercise lactate load in the tropical Pacific tarpon, Megalops cyprinoides Broussonet 1782 but oxygen debt is repaid by aquatic breathing

R Wells, John Baldwin, Roger Seymour, Keith Christian, A Farrell

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Swimming in a flume at reduced water pO2 resulted in muscle and blood lactate levels in Pacific tarpon Megalops cyprinoides that were significantly higher when fish did not have access to air. Blood glucose and haematological variables were unchanged throughout the regimes of exercise at two swimming speeds and hypoxia. Strenuous exercise with bouts of burst swimming, however, resulted in both high blood lactate and glucose, and perturbed haematological status with elevated haemoglobin and reduced mean cell-haemoglobin concentration. Post-exercise recovery was achieved through aquatic breathing rather than by air breathing. The air-breathing organ in Pacific tarpon therefore prolonged aerobic activity, but gill breathing was used to repay oxygen debt. � 2007 The Authors.
    Original languageEnglish
    Pages (from-to)1649-1661
    Number of pages13
    JournalJournal of Fish Biology
    Volume71
    Issue number6
    Publication statusPublished - 2007

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    debt
    breathing
    lactates
    exercise
    blood
    hemoglobin
    oxygen
    air
    glucose
    hypoxia
    muscle
    blood glucose
    gills
    fish
    muscles
    Megalops cyprinoides
    water
    cells

    Cite this

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    title = "Air breathing minimizes post-exercise lactate load in the tropical Pacific tarpon, Megalops cyprinoides Broussonet 1782 but oxygen debt is repaid by aquatic breathing",
    abstract = "Swimming in a flume at reduced water pO2 resulted in muscle and blood lactate levels in Pacific tarpon Megalops cyprinoides that were significantly higher when fish did not have access to air. Blood glucose and haematological variables were unchanged throughout the regimes of exercise at two swimming speeds and hypoxia. Strenuous exercise with bouts of burst swimming, however, resulted in both high blood lactate and glucose, and perturbed haematological status with elevated haemoglobin and reduced mean cell-haemoglobin concentration. Post-exercise recovery was achieved through aquatic breathing rather than by air breathing. The air-breathing organ in Pacific tarpon therefore prolonged aerobic activity, but gill breathing was used to repay oxygen debt. � 2007 The Authors.",
    keywords = "Megalops cyprinoides",
    author = "R Wells and John Baldwin and Roger Seymour and Keith Christian and A Farrell",
    year = "2007",
    language = "English",
    volume = "71",
    pages = "1649--1661",
    journal = "Journal of Fish Biology",
    issn = "0022-1112",
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    }

    Air breathing minimizes post-exercise lactate load in the tropical Pacific tarpon, Megalops cyprinoides Broussonet 1782 but oxygen debt is repaid by aquatic breathing. / Wells, R; Baldwin, John; Seymour, Roger; Christian, Keith; Farrell, A.

    In: Journal of Fish Biology, Vol. 71, No. 6, 2007, p. 1649-1661.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Air breathing minimizes post-exercise lactate load in the tropical Pacific tarpon, Megalops cyprinoides Broussonet 1782 but oxygen debt is repaid by aquatic breathing

    AU - Wells, R

    AU - Baldwin, John

    AU - Seymour, Roger

    AU - Christian, Keith

    AU - Farrell, A

    PY - 2007

    Y1 - 2007

    N2 - Swimming in a flume at reduced water pO2 resulted in muscle and blood lactate levels in Pacific tarpon Megalops cyprinoides that were significantly higher when fish did not have access to air. Blood glucose and haematological variables were unchanged throughout the regimes of exercise at two swimming speeds and hypoxia. Strenuous exercise with bouts of burst swimming, however, resulted in both high blood lactate and glucose, and perturbed haematological status with elevated haemoglobin and reduced mean cell-haemoglobin concentration. Post-exercise recovery was achieved through aquatic breathing rather than by air breathing. The air-breathing organ in Pacific tarpon therefore prolonged aerobic activity, but gill breathing was used to repay oxygen debt. � 2007 The Authors.

    AB - Swimming in a flume at reduced water pO2 resulted in muscle and blood lactate levels in Pacific tarpon Megalops cyprinoides that were significantly higher when fish did not have access to air. Blood glucose and haematological variables were unchanged throughout the regimes of exercise at two swimming speeds and hypoxia. Strenuous exercise with bouts of burst swimming, however, resulted in both high blood lactate and glucose, and perturbed haematological status with elevated haemoglobin and reduced mean cell-haemoglobin concentration. Post-exercise recovery was achieved through aquatic breathing rather than by air breathing. The air-breathing organ in Pacific tarpon therefore prolonged aerobic activity, but gill breathing was used to repay oxygen debt. � 2007 The Authors.

    KW - Megalops cyprinoides

    M3 - Article

    VL - 71

    SP - 1649

    EP - 1661

    JO - Journal of Fish Biology

    JF - Journal of Fish Biology

    SN - 0022-1112

    IS - 6

    ER -