Review of Long Term Macro-Fauna Movement by Multi-Decadal Warming Trends in the Northeastern Pacific

Salvadeo, Christian; Lluch-Belda, Daniel; Lluch-Cota, Salvador E.; Mercuri, Milena

doi:10.5772/23754

Cited by 5 publications

(1 citation statement)

References 37 publications

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“…Velocities and trajectories of horizontal movements identified in this study would be consistent with either of these migrations. Further tagging studies and new modeling applications will be valuable in defining these putative spawning migrations, both of which may be expected to shift to more northern latitudes as long-term warming of oceanic waters (Doney et al 2012, Salvadeo et al 2011) and northward expansion of the subtropical Pacific biome (Polovina et al 2011) …”

Section: Humboldt Squid In the Ccsmentioning

confidence: 99%

Marine predator migration during range expansion: Humboldt squid Dosidicus gigas in the northern California Current System

Stewart¹,

Hazen²,

Foley³

et al. 2012

Mar. Ecol. Prog. Ser.

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Humboldt squid Dosidicus gigas have undergone a major range expansion in the northern California Current System (CCS) during the last decade. These squid are thought to migrate annually from Mexican waters into the CCS where they prey on many species, including several that support lucrative fisheries; however, swimming capabilities and features of longdistance horizontal migrations are not well understood. In the present study, adult Humboldt squid were tagged off central California with pop-up archival transmitting (PAT) tags (n = 5). All squid ex hibited diel vertical migrations and swam south or offshore (west) during tag deployment (2.7 to 17.6 d). One squid swam south at least 34 km d −1 for >17 d and crossed into Mexican waters, which is the highest sustained velocity and the longest horizontal migration observed thus far for Humboldt squid. Results from a simple model to estimate the daily locations and velocities of each squid throughout the deployments suggest an average velocity of ~37 km d −1 and a maximum of 50 km d −1. Additionally, the model suggests that one squid made a bidirectional movement (first north and then returning south) that was not evident from deployment and pop-up positions alone. This study provides insight into Humboldt squid migratory capabilities that are relevant to seasonal migrations and episodic range expansions, both of which are crucial to future interactions of this species with ecosystems and fisheries.KEY WORDS: California Current System · Jumbo squid · Range expansion · Satellite tagging · Swimming velocity Resale or republication not permitted without written consent of the publisher

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Section: Humboldt Squid In the Ccsmentioning

confidence: 99%