Potential poleward distribution shift of dolphinfish (Coryphaena hippurus) along the southern California Current System

Salvadeo, Christian; Auliz-Ortiz, Daniel Martín; Petatán‐Ramírez, David; Reyes‐Bonilla, Héctor; Ivanova-Bonchera, Antonina; Juárez-León, Eduardo

doi:10.1007/s10641-020-00999-0

Cited by 8 publications

(7 citation statements)

References 72 publications

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“…They could alter their distribution, both geographically and vertically in the water column. Shifts in latitudinal distributions due to increased temperatures have already been noted for other fish species (Perry et al, 2005;Nicolas et al, 2011;Fossheim et al, 2015) and have been predicted specifically for mahi along the North American west coast using Ecological Niche Modeling (Salvadeo et al, 2020).…”

Section: Discussionsupporting

confidence: 52%

The Effects of Temperature Acclimation on Swimming Performance in the Pelagic Mahi-Mahi (Coryphaena hippurus)

et al. 2021

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Mahi-mahi (Coryphaena hippurus) are a highly migratory pelagic fish, but little is known about what environmental factors drive their broad distribution. This study examined how temperature influences aerobic scope and swimming performance in mahi. Mahi were acclimated to four temperatures spanning their natural range (20, 24, 28, and 32°C; 5–27 days) and critical swimming speed (Ucrit), metabolic rates, aerobic scope, and optimal swim speed were measured. Aerobic scope and Ucrit were highest in 28°C-acclimated fish. 20°C-acclimated mahi experienced significantly decreased aerobic scope and Ucrit relative to 28°C-acclimated fish (57 and 28% declines, respectively). 32°C-acclimated mahi experienced increased mortality and a significant 23% decline in Ucrit, and a trend for a 26% decline in factorial aerobic scope relative to 28°C-acclimated fish. Absolute aerobic scope showed a similar pattern to factorial aerobic scope. Our results are generally in agreement with previously observed distribution patterns for wild fish. Although thermal performance can vary across life stages, the highest tested swim performance and aerobic scope found in the present study (28°C), aligns with recently observed habitat utilization patterns for wild mahi and could be relevant for climate change predictions.

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Section: Discussionsupporting

confidence: 52%

The Effects of Temperature Acclimation on Swimming Performance in the Pelagic Mahi-Mahi (Coryphaena hippurus)

et al. 2021

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“…the ocean, where mahi-mahi spend the vast majority of their time, warmed more than 0.1 • C per decade in the period from 1971 to 2010 as a result of anthropogenic climate change and will continue to increase in temperature (Hoegh-Gulberg et al, 2014). Therefore, when faced with warming seas, mahi-mahi are expected to expand their range toward higher latitudes (Salvadeo et al, 2020), may be deeper and less active in regions where they are already close to their thermal maxima, and could experience spatiotemporal shifts in spawning patterns.…”

Section: Discussionmentioning

confidence: 99%

Remote Predictions of Mahi-Mahi (Coryphaena hippurus) Spawning in the Open Ocean Using Summarized Accelerometry Data

et al. 2021

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Identifying complex behaviors such as spawning and fine-scale activity is extremely challenging in highly migratory fish species and is becoming increasingly critical knowledge for fisheries management in a warming ocean. Habitat use and migratory pathways have been extensively studied in marine animals using pop-up satellite archival tags (PSATs), but high-frequency data collected on the reproductive and swimming behaviors of marine fishes has been limited by the inability to remotely transmit these large datasets. Here, we present the first application of remotely transmitted acceleration data to predict spawning and discover drivers of high activity in a wild and highly migratory pelagic fish, the mahi-mahi (Coryphaena hippurus). Spawning events were predicted to occur at nighttime, at a depth distinct from non-spawning periods, primarily between 27.5 and 30°C, and chiefly at the new moon phase in the lunar cycle. Moreover, throughout their large-scale migrations, mahi-mahi exhibited behavioral thermoregulation to remain largely between 27 and 28°C and reduced their relative activity at higher temperatures. These results show that unveiling fine-scale activity patterns are necessary to grasp the ecology of highly mobile species. Further, our study demonstrates that critical, and new, ecological information can be extracted from PSATs, greatly expanding their potential to study the reproductive behavior and population connectivity in highly migratory fishes.

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“…The Northern East China Sea is mostly continental shelf and is relatively shallow, but the vertical temperature structure changes seasonally [54] and mixing occurs from late autumn to spring [27] with a strong thermocline in late spring through summer. The mixing of different water masses with varied temperature gradients is one of the factors thought to affect the vertical movements of the dolphinfish [24], and the poleward expansion of dolphinfish in the Eastern Pacific Ocean [55]. The cluster analysis suggests a clinal trend of distinct thermal clusters with limited mixing among locations, but tag retention times were too short to test the hypothesis of mixing and connectivity.…”

Section: Vertical Distributionmentioning

confidence: 94%

Movements and Habitat Use of Dolphinfish (Coryphaena hippurus) in the East China Sea

Lin

Chiang²,

Musyl³

et al. 2020

Sustainability

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To refine the regional and global stock and ecological assessments of dolphinfish in fisheries, it is necessary to have information on the species habitat use, fisheries interaction, migration corridors, and on changes in spatial-temporal patterns over their ontogeny. In order to inform management, pop-up satellite archival tags (PSATs) were deployed on dolphinfish (Coryphaena hippurus) in the Northern East China Sea to get data on the movement patterns and habitat utilization of this species in this location. During October–November 2018, four dolphinfish (94–102 cm fork length) were captured by set-nets and PSAT tagged. Tagged dolphinfish retained PSATs for 5–31 days-at-liberty (total 69 days) and linear dispersion from deployment to pop-up locations ranged from 63 to 204 km. According to most probable tracks, tagged fish made primarily northward movements. Tagged fish reached depths of ~94 m and experienced ambient temperatures from 17.8 to 23 °C. Movements appeared to be limited by a 3 °C change relative to sea surface temperature (SST) and were confined to the mixed-layer. Diel diving patterns indicated dolphinfish spent >80% of daytime activity and 40% of nighttime activity near the surface, where variability in diving patterns was more pronounced. The vertical diving patterns showed pronounced changes during dawn and dusk, where dolphinfish mirrored the movements of diel migrating prey organisms. Our preliminary results provide vertical distribution patterns of dolphinfish in a location that supports important fisheries. This information will be useful for management to develop stock assessments which support the sustainable use of this species.

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Potential poleward distribution shift of dolphinfish (Coryphaena hippurus) along the southern California Current System

Cited by 8 publications

References 72 publications

The Effects of Temperature Acclimation on Swimming Performance in the Pelagic Mahi-Mahi (Coryphaena hippurus)

The Effects of Temperature Acclimation on Swimming Performance in the Pelagic Mahi-Mahi (Coryphaena hippurus)

Remote Predictions of Mahi-Mahi (Coryphaena hippurus) Spawning in the Open Ocean Using Summarized Accelerometry Data

Movements and Habitat Use of Dolphinfish (Coryphaena hippurus) in the East China Sea

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