Unsealing behaviour: Variation in harbour seal (Phoca vitulina) responses to anthropogenic sound in relation to individual health

Marine Pollution Bulletin, Год журнала: 2025, Номер 214, С. 117777 - 117777

Опубликована: Март 13, 2025

Anthropogenic underwater noise can affect animal behaviour, which in turn is influenced by other intrinsic and extrinsic factors. In this case study, we explored links between health on 18 free-ranging harbour seals (Phoca vitulina) the Elbe estuary Wadden Sea. Individuals were captured blood samples taken to assess status through leukograms molecular biomarkers indicative of stress, sound exposure immunological status. Seals fitted with long-term movement tags (DTAGs), recording high-resolution three-dimensional diving behaviour received levels simultaneously. Four behavioural states identified from seals' dive data (bottom phase duration, prey capture attempts, bottom stroke frequency, post-dive descent velocity) using a Hidden Markov Model, state transitions linked 2 kHz decidecade as vessel proxy. State transition probabilities varied, but increasing noise, resting probability decreased, transit likelihood increased. remaining exposed vessels regularly showed higher tolerance than fewer vessels. Immunological parameters (here white cells count) also affected onset noise-induced transitions, highlighting importance considering response studies.

Язык: Английский

Behavioural Response of Australian Fur Seals (Arctocephalus Pusillus Doriferus) to Vessel Noise During Peak and Off-Peak Human Visitation

Опубликована: Янв. 1, 2024

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Язык: Английский

Behavioural response of Australian fur seals (Arctocephalus pusillus doriferus) to vessel noise during peak and off-peak human visitation

Marine Pollution Bulletin, Год журнала: 2024, Номер 208, С. 116947 - 116947

Опубликована: Сен. 14, 2024

Язык: Английский