Physical effects from underwater explosions on two fish species
Jenkins, A.K.; Kotecki, S.E.; Dahl, P.H.; Bowman, V.F.; Casper, B.M.; Boerger, C.; Popper, A.N. (2024). Physical effects from underwater explosions on two fish species, in: Popper, A.N. et al. The effects of noise on aquatic life: Principles and practical considerations. pp. 979-987. https://dx.doi.org/10.1007/978-3-031-50256-9_70 |
| Keywords | Sardinops sagax (Jenyns, 1842) [WoRMS]
Marine/Coastal | | Author keywords | Scomber japonicus Swim bladder ·Kidney · Rupture |
| Authors | | Top | - Jenkins, A.K.
- Kotecki, S.E.
- Dahl, P.H.
- Bowman, V.F.
| - Casper, B.M.
- Boerger, C.
- Popper, A.N.
| |
| Abstract | There is broad concern about the potential effects of anthropogenic sound on aquatic animals including fishes. While there have been a number of studies focusing on intense impulsive sounds, most, including all recent studies, have focused on pile driving and seismic air guns. Recently, however, several studies have examined the effects of exposure to explosives, using a dose-response approach, with animals at different distances from the source. Studies were conducted offshore of San Diego, CA, USA, in 2018 with Pacific sardines (Sardinops sagax) and in 2019 with Pacific mackerel (Scomber japonicus). Primary effects were damage to the swim bladder and kidney. These two injuries displayed a monotonic dependence with acoustic dose and range from the explosion for Pacific mackerel. In contrast, Pacific sardine injuries showed a non-monotonic dependence, with increased rates of injury both near the detonation and at 100–150 m that may have been due to rapid decompression of the swim bladder caused by near-simultaneous arrival of bottom and surface reflected waves. Overall, differences in injury rates between these two species may have been related to anatomy and/or to differences in sound propagation conditions between years which could have influenced injuries within a certain range of distances from the detonation. |
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