Species-specific physiological status in seabirds: insights from integrating oxidative stress measurements and biologging

Frontiers in Physiology, Journal Year: 2025, Volume and Issue: 16

Published: March 19, 2025

Understanding the relationship between behavior and physiological state, as well species differences in responses, is key to identifying behavioral adaptations necessary for wild animals avoid deterioration, thereby enhancing their survival fitness. A commonly used measure of condition oxidative stress, which results from an imbalance damage—often exacerbated by respiration during exercise indicative physical harm—and antioxidant capacity, reflects organism’s ability recover such damage. Despite its importance, stress has rarely been linked behavior, foraging, leaving this underexplored. In study, we focused on two seabird species, black-tailed gulls ( Larus crassirostris ) streaked shearwaters Calonectris leucomelas ), are similar body size primarily forage same prey but differ traits habitat, flight style, function. We recorded trajectories these birds approximately 1 week using biologging measured plasma stress. found that was higher than shearwaters, suggesting life histories, habitats, function may be related long-term However, over a 1-week timescale, there were no significant changes might not necessarily lead species-specific responses short term. Additionally, consistent metrics most years, vary depending yearly environmental fluctuations. Based our findings, encourage future studies would explore integrate interactions marine environments, different bird clarify contribution specific foraging behaviors either deterioration or recovery conditions, varying effect conditions relationships.

Language: Английский

Analysis of the Home Range of Black-tailed Gulls (<i>Larus crassirostris</i>) Inhabiting the East Sea^1a

Korean Journal of Environment and Ecology, Journal Year: 2025, Volume and Issue: 39(1), P. 64 - 73

Published: Feb. 28, 2025

Language: Английский

Status of Marine Debris Damage to Adult and Young Black-Tailed Gulls (Larus crassirostris) in Their Breeding Colonies in South Korea

Diversity, Journal Year: 2024, Volume and Issue: 16(2), P. 124 - 124

Published: Feb. 15, 2024

Marine debris from fishing-related paraphernalia poses a threat to the survival of marine organisms, especially seabirds. Although detrimental effects on seabirds have been documented, studies extent damage inflicted by seabird breeding population are scarce. Here, ingestion and entanglement black-tailed gulls (Larus crassirostris) residing in South Korea were quantified. The five colonies visited, frequency adults young recorded. A total 25 cases confirmed. As result, varied depending colonies. More suffered than young, their most damaged parts usually legs. Fishing lines hooks caused damage. We suggest that acquired could affect success.

Language: Английский