ArticleIntegrative zoology2021
Diel differences in blue whale (Balaenoptera musculus) dive behavior increase nighttime risk of ship strikes in northern Chilean Patagonia.
Article in Integrative zoology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Article
- Exploring the evidence of direct threats to cetaceans from maritime vessels: A systematic map.PloS one · 2026Article
- Article
- Downsized: gray whales using an alternative foraging ground have smaller morphology.Biology letters · 2023Article
- Shaped by Their Environment: Variation in Blue Whale Morphology across Three Productive Coastal Ecosystems.Integrative organismal biology (Oxford, England) · 2023Article
- Estimating energetic intake for marine mammal bioenergetic models.Conservation physiology · 2023Article
- A sampling, exposure and receptor framework for identifying factors that modulate behavioural responses to disturbance in cetaceans.The Journal of animal ecology · 2022Article
- Diel differences in blue whale (Balaenoptera musculus) dive behavior increase nighttime risk of ship strikes in northern Chilean Patagonia.Integrative zoology · 2021Article
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Authors and funding
9 authors.
Funding
Abstract
The northern Chilean Patagonia region is a key feeding ground and a nursing habitat in the southern hemisphere for blue whales (Balaenoptera musculus). From 2014 to 2019, during 6 separate research cruises, the dive behavior of 28 individual blue whales was investigated using bio-logging tags (DTAGs), generating ≈190 h of data. Whales dove to significantly greater depths during the day compared to nighttime (day: 32.6 ± 18.7 m; night: 6.2 ± 2.7 m; P < 0.01). During the night, most time was spent close to the surface (86% ± 9.4%; P < 0.01) and at depths of less than 12 m. From 2016 to 2019, active acoustics (scientific echosounders) were used to record prey (euphausiids) density and distribution simultaneously with whale diving data. Tagged whales appeared to perform dives relative to the vertical migration of prey during the day. The association between diurnal prey migration and shallow nighttime dive behavior suggests that blue whales are at increased risk of ship collisions during periods of darkness since the estimated maximum ship draft of vessels operating in the region is also ≈12 m. In recent decades, northern Chilean Patagonia has seen a large increase in marine traffic due to a boom in salmon aquaculture and the passenger ship industry. Vessel strike risks for large whales are likely underestimated in this region. Results reported in this study may be valuable for policy and mitigation decisions regarding conservation of the endangered blue whale.
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