What does this research mean for the field?

In Procellariiformes, deeper and longer diving species possess significantly higher total oxygen stores and theoretical aerobic dive limits, driven primarily by elevated pectoral myoglobin concentrations that match their underwater performance. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To assess how physiological traits including total oxygen stores, theoretical aerobic dive limits, and muscle buffering capacity govern dive performance across three migratory Procellariiformes seabird species.

August 22, 2026Marine BiologyOpen Access

Diving adaptations of migratory seabirds: oxygen stores in Procellariiformes highlight a key role for pectoral myoglobin in determining dive behaviour

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Authors

RGRachel F. Goddard JDJamie Darby AHAnthony J. Hickey

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Overview

Comparative physiological study reveals that elevated oxygen stores and pectoral myoglobin match diving depth and duration in migratory seabirds, indicating tightly tuned underwater adaptations.

Key Points

To assess how physiological traits including total oxygen stores, theoretical aerobic dive limits, and muscle buffering capacity govern dive performance across three migratory Procellariiformes seabird species.
Measured total oxygen stores, theoretical aerobic dive limit (tADL), and muscle buffering capacity in grey-faced petrels (Pterodroma gouldi), flesh-footed shearwaters (Ardenna carneipes), and sooty shearwaters (Ardenna grisea).
Compared physiological metrics with dive logger data recording mean dive depths and durations (1.6 m/4 s for petrels; 3.5 m/6.9 s for flesh-footed shearwaters; 6.9 m/39.7 s for sooty shearwaters).
Quantified pectoral muscle myoglobin concentrations and assessed inter-annual variation in haematological parameters.
Total oxygen stores were significantly higher in flesh-footed shearwaters (48.6 ± 2.2 mL O2 kg−1) and sooty shearwaters (46.2 ± 2.3 mL O2 kg−1) than in grey-faced petrels (41.0 ± 3.1 mL O2 kg−1).
Theoretical aerobic dive limits were longer in flesh-footed shearwaters (52.3 ± 2.4 s) and sooty shearwaters (49.6 ± 2.7 s) compared to grey-faced petrels (44.2 ± 3.4 s), with logger records showing species rarely exceed these limits.
Pectoral myoglobin concentrations correlated strongly with dive capacity to sustain aerobic flight-muscle metabolism, while muscle buffering capacity showed minimal differences among species.

Cite This Study

Goddard et al. (2026) studied this question.

synapsesocial.com/papers/6a895eeeca7ade938187d176 https://doi.org/10.1007/s00227-026-04934-2

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August 22, 2026Marine BiologyOpen Access

Diving adaptations of migratory seabirds: oxygen stores in Procellariiformes highlight a key role for pectoral myoglobin in determining dive behaviour

View Full Paper

Ask AI

Bookmark

Authors

RGRachel F. Goddard JDJamie Darby AHAnthony J. Hickey

Discussion

Member takes

Overview

Comparative physiological study reveals that elevated oxygen stores and pectoral myoglobin match diving depth and duration in migratory seabirds, indicating tightly tuned underwater adaptations.

Key Points

To assess how physiological traits including total oxygen stores, theoretical aerobic dive limits, and muscle buffering capacity govern dive performance across three migratory Procellariiformes seabird species.
Measured total oxygen stores, theoretical aerobic dive limit (tADL), and muscle buffering capacity in grey-faced petrels (Pterodroma gouldi), flesh-footed shearwaters (Ardenna carneipes), and sooty shearwaters (Ardenna grisea).
Compared physiological metrics with dive logger data recording mean dive depths and durations (1.6 m/4 s for petrels; 3.5 m/6.9 s for flesh-footed shearwaters; 6.9 m/39.7 s for sooty shearwaters).
Quantified pectoral muscle myoglobin concentrations and assessed inter-annual variation in haematological parameters.
Total oxygen stores were significantly higher in flesh-footed shearwaters (48.6 ± 2.2 mL O2 kg−1) and sooty shearwaters (46.2 ± 2.3 mL O2 kg−1) than in grey-faced petrels (41.0 ± 3.1 mL O2 kg−1).
Theoretical aerobic dive limits were longer in flesh-footed shearwaters (52.3 ± 2.4 s) and sooty shearwaters (49.6 ± 2.7 s) compared to grey-faced petrels (44.2 ± 3.4 s), with logger records showing species rarely exceed these limits.
Pectoral myoglobin concentrations correlated strongly with dive capacity to sustain aerobic flight-muscle metabolism, while muscle buffering capacity showed minimal differences among species.

Cite This Study

Goddard et al. (2026) studied this question.

synapsesocial.com/papers/6a895eeeca7ade938187d176 https://doi.org/10.1007/s00227-026-04934-2

View Full Paper

Ask AI

Bookmark