Vertical and horizontal migrations by the jumbo squid Dosidicus gigas revealed by electronic tagging

Gilly, WF; Markaida, Unai; Baxter, Charles; Block, BA; Boustany, André M.; Zeidberg, Louis D.; Reisenbichler, Kim R.; Robison, Bruce H.; Bazzino, Gastón; Salinas, Cesar A.

doi:10.3354/meps324001

Cited by 197 publications

(194 citation statements)

References 31 publications

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“…Bigeye tuna often occupy areas below the thermocline in the ETA OMZ during diurnal periods where dissolved oxygen levels are consistently <3.5 ml l −1 , and forage in the prey-abundant surface mixed layer at night. Other predatory species, such as the jumbo squid 29 (Dosidicus gigas), reside in the most hypoxic areas of the OMZ, but also migrate to the surface mixed layer to feed. Thus, hypoxia-tolerant predators are also impacted by the OMZs owing to the increased availability of prey species in the surface mixed layer.…”

Section: Figure 1 | Blue Marlin M Nigricans With An Electronic Tag Umentioning

confidence: 99%

Expansion of oxygen minimum zones may reduce available habitat for tropical pelagic fishes

et al. 2011

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Habitat compression and associated potential habitat loss was validated using electronic tagging data from 47 blue marlin. This phenomenon increases vulnerability to surface fishing gear for billfishes and tunas 8,9 , and may be associated with a 10-50% worldwide decline of pelagic predator diversity 10 . Further expansion of the Atlantic OMZ along with overfishing may threaten the sustainability of these valuable pelagic fisheries and marine ecosystems.Dissolved oxygen is critical for sustaining most marine animal life. When dissolved oxygen is minimized, widespread mortality 11,12 or avoidance 13 of affected areas can result. OMZs in the eastern tropical seas represent the largest contiguous areas of naturally occurring hypoxia 9 in the world's oceans. In the present climate change cycle, characterized by anthropogenic CO 2 emissions 2 and global warming, these areas are expanding and shoaling 3,12,14 . Possible consequences of OMZ expansion to the marine ecosystem 14 include loss of vertical habitat for high-oxygen-demand tropical pelagic billfishes and tunas and the associated increased risk of overfishing of these species by surface fishing gear 8,9 .Large-scale expansion of OMZs over the past 50 years 3 poses a challenge for predicting impacts to pelagic fish stocks and their ecosystem. Although oceanographic modelling and ocean observations for retrospective analyses are useful for examining past trends, understanding future OMZ expansions and the concurrent impacts on billfish and tuna populations is essential for preventing overfishing. We analysed recent hypoxia data associated with OMZ expansion in the eastern tropical Atlantic (ETA) to examine possible habitat loss of the near-surface layer. We also present vertical habitat use data of Atlantic blue marlin (Makaira nigricans) monitored with electronic tags (Fig. 1). Changes in habitat use were validated by maximum daily depths

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Section: Figure 1 | Blue Marlin M Nigricans With An Electronic Tag Umentioning

confidence: 99%

Expansion of oxygen minimum zones may reduce available habitat for tropical pelagic fishes

et al. 2011

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“…However, their abundance in the ecosystem is probably lower than that of V. lucetia. Moreover that V lucetia and D. gigas migrate to deeper waters during the day (migratory behaviour: Markaida et al, 2005, Gilly et al, 2006 and it is the factor that determines the dominance of V. lucetia in the squid's stomach contents. Based on the stomach content analysis of D. gigas and the acoustic detection we can infer that V. lucetia was the main component of the jumbo squid's diet in 2007 and 2008 in the Humboldt Current System off Peru.…”

Section: Discussionmentioning

confidence: 99%

“…In Peru the jumbo squid fishery has been one of the most important fisheries since 1990 (Yamashiro et al, 1998, Markaida and Sosa-Nishizaki, 2003, RosasLuis et al, 2008, Keyl et al, 2008. This species feeds mainly at night, but there are reports of jumbo squid feeding during the day in the California Current System of Mexico (Markaida andSosa-Nishizaki, 2003, Rosas-Luis et al, 2008), and in the Humboldt Current System of Peru (Alegre-Norza, personal observations, 2010), which shows that the species carries out both vertical (Gilly et al, 2006) and horizontal migrations (Markaida et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Trophic relationships between the jumbo squid (Dosidicus gigas) and the lightfish (Vinciguerria lucetia) in the Humboldt Current System off Peru

Rosas‐Luis¹,

Tafur-Jimenez²,

Alegre-Norza³

et al. 2011

Sci. Mar.

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SUMMARY: Acoustic surveys for assessing the biomass and distribution of the jumbo squid (Dosidicus gigas) and the lightfish (Vinciguerria lucetia) were carried out in the Humboldt Current System of Peru in 2007 and 2008. At the same time, 937 jumbo squid were caught and their stomach contents analyzed. The diet of the jumbo squid was dominated by mesopelagic fish. The first component of their fish diet was V. lucetia and the second component was the myctophid fish Diogenichthys laternatus. Acoustic biomass estimates of these species show that V. lucetia is an important component in aggregative structures in the Humboldt Current System of Peru and its distribution and movements are closely related to the migratory movements of the jumbo squid. The trophic relationship observed between D. gigas and V. lucetia promotes an increase in jumbo squid biomass and, has a positive trophic effect on the ocean ecosystem.Keywords: jumbo squid, Dosidicus gigas, Vinciguerria lucetia, trophic relationships, acoustic method, Humboldt Current. RESUMEN: Relaciones tróficas entre el calamar gigante DosiDicus gigas y el pez luminoso Vinciguerria lucetia en el sistema de la corriente de Humboldt de Perú. -La biomasa de calamar gigante Dosidicus gigas y el pez mesopelágico Vinciguerria lucetia se obtuvo a partir de detección acústica en la Corriente de Humboldt de Perú durante 2007 y 2008. Simultáneamente, 937 calamares fueron capturados y se les analizó el contenido estomacal. La dieta de D. gigas estuvo dominada por peces, siendo V. lucetia el principal componente y en segundo lugar el mictófido Diogenichthys laturnatus. A partir de la evaluación de la biomasa de ambas especies, estimada por el método acústico, se observó que V. lucetia es uno de los principales componentes en el sistema de la Corriente de Humboldt de Perú y sus patrones de distribución y movimientos espacio-temporal están fuertemente relacionados a los desplazamientos migratorios del calamar. Estas relaciones tróficas promueven un incremento de la biomasa de D. gigas que es resultado de un patrón similar en V. lucetia, lo que propicia un efecto trófico positivo en el ecosistema oceánico.Palabras clave: calamar gigante, Dosidicus gigas, Vinciguerria lucetia, relaciones tróficas, método acústico, corriente de Humboldt.

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“…2-B), thereby modifying the method described by Gilly et al (2006). Prior to deployment, we programmed a histogram collection of summarized time-at-depth data for 14 bins (at 0, 10, 20, 50, 100, 150, 200, 300, 400, 600, 800, 1000, 1200 and deeper than 1200 m) at six-hours intervals in order to save the battery.…”

Section: Pat Tagmentioning

confidence: 99%

“…Dives deeper than 2000 m by D. gigas have been reported in California's Monterey Bay based on ROV observations (Zeidberg & Robison 2007). Gilly et al (2006) recently conducted intensive studies over long periods by using electronic tagging methods on the vertical migration of another population of D. gigas in the Gulf of California. According to their studies, the squid clearly engaged in diel vertical migration in the depth range from near the sea surface down to depths of 250-400 m, which mark the upper boundary of a midwater hypoxic zone.…”

Section: Introductionmentioning

confidence: 99%

Vertical Migratory Behavior of Jumbo Flying Squid (Dosidicus gigas) off Peru: Records of Acoustic and Pop-up Tags

Sakai¹,

Tsuchiya

Mariátegui

et al. 2017

JARQ

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The vertical migratory behavior of jumbo flying squid (Dosidicus gigas) was recorded in the Humboldt Current region off Peru in 2007 by ship-based tracking with acoustic tags for two days and a pop-up archival transmitting (PAT) tag for two weeks. Two squid (measuring 74.0 cm and 110.5 cm in dorsal mantle length, respectively) were tagged with acoustic tags. The larger one was also tagged with a PAT tag. Tracking data indicated that both squid dived to a depth of 1200 m in the daytime. Although the PAT tag was not recovered, its seven-day summary data that was recovered via the Argos satellite system suggest that D. gigas off Peru engage in diel vertical migration, where the squid also migrate to near the sea surface at night. Conversely, two daytime migration patterns were observed: migration to mid-waters above the oxygen minimum zone (OMZ) at depths between 200 and 800 m, and migration to deeper waters. During descents to 1200 m, the squid increased its descending velocity in the OMZ. We also discuss the biological implications of that diel vertical migration.

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Vertical and horizontal migrations by the jumbo squid Dosidicus gigas revealed by electronic tagging

Cited by 197 publications

References 31 publications

Expansion of oxygen minimum zones may reduce available habitat for tropical pelagic fishes

Expansion of oxygen minimum zones may reduce available habitat for tropical pelagic fishes

Trophic relationships between the jumbo squid (<i>Dosidicus gigas</i>) and the lightfish (<i>Vinciguerria lucetia</i>) in the Humboldt Current System off Peru

Vertical Migratory Behavior of Jumbo Flying Squid (<i>Dosidicus gigas</i>) off Peru: Records of Acoustic and Pop-up Tags

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