Movements, behavior, and habitat utilization of yellowfin tuna (Thunnus albacares) in the Pacific Ocean off Baja California, Mexico, determined from archival tag data analyses, including unscented Kalman filtering

Schaefer, Kurt M.; Fuller, Daniel W.; Block, Barbara A.

doi:10.1016/j.fishres.2011.08.006

Cited by 73 publications

(81 citation statements)

References 24 publications

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“…On the other hand, the frontal cod migrated out of their spawning grounds at variable temperature and depth, and displayed an extensive, vertical and horizontal Those fish nevertheless displayed a temperature history of a coastal cod (Grabowski et al 2011). The timing of a migration from spawning to feeding ground and vice versa, which is crucial for individual survival and reproductive success, has been shown to be related either to food availability and temperature (Bell 2011, Schaefer et al 2011 or to genetic inheritance (Quinn et al 2000, Pulido et al 2001. Here, the timing of migrations in 2 successive years was correlated, suggesting a consistency in the onset of migration for each behaviour type.…”

Section: Discussionmentioning

confidence: 99%

Consistency in the behaviour types of the Atlantic cod: repeatability, timing of migration and geo-location

Þorsteinsson¹,

Pálsson²,

Tómasson³

et al. 2012

Mar. Ecol. Prog. Ser.

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We investigated the behaviour patterns of coastal (relatively stationary in shallow waters) and migratory frontal (offshore) types of Atlantic cod Gadus morhua in Icelandic waters using information from data storage tags (DSTs). Consistent and repeated patterns of migration were observed for both coastal and frontal cod, with characteristic DST profiles repeated from year to year. The migration timing in 2 successive years was close to being synchronous, suggesting that the onset of migration was consistent from year to year. A tidal location model suggested that the feeding migrations of cod in Icelandic waters were undertaken in groups or shoals during the whole year. The overall stability of the behaviour patterns of both types suggests that coastal and frontal individuals use different behavioural strategies which might either be related to food availability/ competition or genetic control.

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Section: Discussionmentioning

confidence: 99%

Consistency in the behaviour types of the Atlantic cod: repeatability, timing of migration and geo-location

Þorsteinsson¹,

Pálsson²,

Tómasson³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…Movimientos horizontales y verticales del dorado (Coryphaena hippurus) en la bahía de La Paz, México turn play a key role in determining their permanence and habitat preference (Brill and Lutcavage 2001, Furukawa et al 2011, Schaefer et al 2011. It is important to know the movements and habitat preferences of pelagic fish because their vulnerability to fishing is influenced by factors such as the depth they inhabit, travelling speed, residence time in certain areas, and school formation (Brill and Lutcavage 2001).…”

Section: Horizontal and Vertical Movements Of The Common Dolphinfish mentioning

confidence: 99%

“…1). Eight dolphinfish were caught by hook and line at three localities cambios de temperatura y concentración de oxígeno con la profundidad), que a su vez son transcendentales en la determinación de su permanencia y preferencia de hábitat (Brill y Lutcavage 2001, Furukawa et al 2011, Schaefer et al 2011. Es importante conocer cómo los peces pelágicos rigen sus movimientos y preferencias de hábitat ya que se ha reportado que la vulnerabilidad de estos peces a la pesca es influenciada por factores como la profundidad que habitan, la velocidad a la que viajan, el tiempo de residencia en determinadas áreas y la formación de cardúmenes (Brill y Lutcavage 2001).…”

Section: Study Area and Taggingunclassified

Horizontal and vertical movements of the common dolphinfish (Coryphaena hippurus) in La Paz Bay, Mexico

2015

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ABSTRACT. The common dolphinfish (Coryphaena hippurus) is an important resource for the sport-fishing industry in Mexico. It is captured incidentally by the eastern Pacific purse-seine tuna fishery and in coastal areas by artisanal fisheries. Although it is considered a highly migratory species, only few studies of its movements are available. In this study, the behavior of the common dolphinfish was analyzed by means of acoustic telemetry at three locations within La Paz Bay (southern Gulf of California) from summer to autumn 2013. Acoustic transmitters were attached to six individuals and they were tracked for periods of up to 48 h. Every hour, vertical profiles of temperature and bathymetry were made. To determine the effect of biotic (sex) and abiotic (water temperature and depth, thermocline depth, hour, and bathymetry) variables on the horizontal and vertical movements of tagged organisms, generalized additive mixed models were applied. The results showed a tendency of horizontal movements to the southwestern zone of the bay; two individuals crossed from the eastern to the western side. The average speed was 0.51 m s -1 . The vertical movements showed that the individuals spent 80% of the time above 34 m depth, of which around 45% was spent in the upper 10 m of the water column. During daylight hours they swam in shallow waters (upper 10 m) and at night they performed deeper dives (73 m maximum depth). Biotic and abiotic variables influenced both types of movements; however, bathymetry and temperature largely explained fish movements.Key words: horizontal and vertical movements, Coryphaena hippurus, La Paz Bay, acoustic transmitters. RESUMEN.El dorado (Coryphaena hippurus) es un recurso importante para la pesca deportiva en México. Es capturado incidentalmente por la flota atunera de cerco en el Pacífico oriental y en áreas costeras por la pesca artesanal. Aunque es considerada una especie altamente migratoria, existen pocos estudios sobre sus movimientos. En este estudio se analizaron los movimientos del dorado por medio de telemetría acústica en tres localidades dentro de la bahía de La Paz, parte sur del golfo de California, entre verano y otoño de 2013. Se adhirieron transmisores acústicos a seis individuos y se siguieron durante periodos de hasta 48 h. Cada hora, se hicieron perfiles verticales de temperatura y batimetría. Para determinar el efecto de variables bióticas (sexo) y abióticas (temperatura y profundidad del agua, profundidad de la termoclina, hora y batimetría) sobre los movimientos horizontales y verticales de los organismos marcados, se aplicaron modelos aditivos generalizados mixtos. Los resultados mostraron una tendencia a movimientos horizontales a la zona suroeste de bahía de La Paz; dos movimientos atravesaron la bahía de sureste a suroeste. La velocidad promedio fue de 0.51 m s -1 . Los movimientos verticales indicaron que los individuos estuvieron por encima de los 34 m de profundidad el 80% del tiempo, del cual aproximadamente 45% estuvieron en los 10 m superiores. En horas de lu...

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“…A temperature-mediated decrease in heart rate (f H ) scope has been proposed to limit the vertical distribution of yellowfin, skipjack and juvenile bigeye tunas to temperatures above 15°C (Holland et al, 1990;Brill et al, 1999;Brill and Bushnell, 2001), although large yellowfin can occasionally withstand much cooler temperatures for short periods (Dagorn et al, 2006;Schaefer et al, 2011). In contrast, other research indicates that the cardiac function of Pacific bluefin tunas is more tolerant of cold temperatures such that they can routinely dive into waters less than 10°C and maintain a consistent presence in the mixed layer of the cool but productive California Current waters (14-21°C) Blank et al, 2004;Kitagawa et al, 2007;Galli et al, 2009;Boustany et al, 2010;Galli et al, 2011).…”

Section: Bluefin Tunas (Thunnus Orientalis T Thynnus and T Maccoyii)mentioning

confidence: 99%

Heart rate responses to temperature in free-swimming Pacific bluefin tuna (Thunnus orientalis)

Farwell¹,

Rodriguez

Brandt

et al. 2013

Journal of Experimental Biology

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SUMMARYThe bluefin tuna heart remains at ambient water temperature (T a ) but must supply blood to warm regions of the body served by countercurrent vascular heat exchangers. Despite this unusual physiology, inherent difficulties have precluded an understanding of the cardiovascular responses to T a in free-swimming bluefin tunas. We measured the heart rate (f H ) responses of two captive Pacific bluefin tunas (Thunnus orientalis; 9.7 and 13.3kg) over a cumulative period of 40days. Routine f H during fasting in the holding tank at a T a of 20°C was 45.1±8.0 and 40.7±6.5beatsmin −1 for Tuna 1 and Tuna 2, respectively. f H decreased in each fish with a Q 10 temperature coefficient of 2.6 (Tuna 1) and 3.1 (Tuna 2) as T a in the tank was slowly decreased to 15°C (~0.4°Ch Supplementary material available online at

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Movements, behavior, and habitat utilization of yellowfin tuna (Thunnus albacares) in the Pacific Ocean off Baja California, Mexico, determined from archival tag data analyses, including unscented Kalman filtering

Cited by 73 publications

References 24 publications

Consistency in the behaviour types of the Atlantic cod: repeatability, timing of migration and geo-location

Consistency in the behaviour types of the Atlantic cod: repeatability, timing of migration and geo-location

Horizontal and vertical movements of the common dolphinfish (Coryphaena hippurus) in La Paz Bay, Mexico

Heart rate responses to temperature in free-swimming Pacific bluefin tuna (Thunnus orientalis)

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