Vertical and horizontal movements of striped marlin (Tetrapturus audax) near the Hawaiian Islands, determined by ultrasonic telemetry, with simultaneous measurement of oceanic currents

Brill, Richard W.; Holts, David B.; Chang, Randolph K. C.; Sullivan, Scott; Dewar, Heidi; Carey, Francis G.

doi:10.1007/bf00349767

Cited by 109 publications

(97 citation statements)

References 9 publications

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“…4). Differences in the relative importance of epi-and mesopelagic prey groups between shallow and deep-ranging predators are in agreement with conclusions from past diet studies (41)(42)(43)(44)(45) and evidence from tagging studies showing separation in vertical habitat utilization (24,25,27,29,31,34,35,37), which are in turn explained by species-specific physiological capabilities. For example, it is well known that vascular countercurrent heat exchangers in scombrids allow tunas to access deeper colder waters while maintaining a body temperature above ambient levels (46).…”

Section: Resultssupporting

confidence: 87%

The influence of depth on mercury levels in pelagic fishes and their prey

Choy

Popp

Kaneko

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

187

144

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Mercury distribution in the oceans is controlled by complex biogeochemical cycles, resulting in retention of trace amounts of this metal in plants and animals. Inter-and intra-specific variations in mercury levels of predatory pelagic fish have been previously linked to size, age, trophic position, physical and chemical environmental parameters, and location of capture; however, considerable variation remains unexplained. In this paper, we focus on differences in ecology, depth of occurrence, and total mercury levels in 9 species of commercially important pelagic fish (Thunnus obesus, T. albacares, Katsuwonus pelamis, Xiphias gladius, Lampris guttatus, Coryphaena hippurus, Taractichthys steindachneri, Tetrapturus audax, and Lepidocybium flavobrunneum) and in numerous representatives (fishes, squids, and crustaceans) of their lower trophic level prey sampled from the central North Pacific Ocean. Results indicate that total mercury levels of predatory pelagic fishes and their prey increase with median depth of occurrence in the water column and mimic concentrations of dissolved organic mercury in seawater. Stomach content analysis results from this study and others indicate a greater occurrence of higher-mercury containing deeper-water prey organisms in the diets of the deeperranging predators, X. gladius, T. obesus, and L. guttatus. While present in trace amounts, dissolved organic mercury increases with depth in the water column suggesting that the mesopelagic habitat is a major entry point for mercury into marine food webs. These data suggest that a major determinant of mercury levels in oceanic predators is their depth of forage.depth of forage ͉ marine pelagic predators ͉ North Pacific Ocean ͉ mercury bioaccumulation ͉ mesopelagic zone

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Section: Resultssupporting

confidence: 87%

The influence of depth on mercury levels in pelagic fishes and their prey

Choy

Popp

Kaneko

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

187

144

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“…Striped marlin are found in more temperate waters than others istiophorids, with strong preferences for waters 20-25°C (Ueyanagi, 1965;Domeier, 2006). Tracking of horizontal and vertical movements show that striped marlin spend most of the time in surface waters (10 m), but dive to depths of 170 m, suggesting that their vertical movements are strongly influenced by water temperature (Brill et al, 1993). In general, telemetry tracking of billfish revealed that species, such as striped marlin and blue marlin (Makaira nigricans), make short vertical migrations to moderate depths, while swordfish (Xiphias gladius) dive deeper and longer (Block et al, 1992a(Block et al, , 1992bSedberry & Loefer, 2001;Takahashi et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Daily food intake of Kajikia audax (Philippi, 1887) off Cabo San Lucas, Gulf of California, Mexico

Abitía-Cárdenas¹,

Galván‐Magaña²,

Cruz-Escalona³

et al. 2011

lajar

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ABSTRACT.The daily food intake rates of the striped marlin, Kajikia audax (Perciformes: Istiophoridae), were estimated using qualitative and quantitative analyses of their trophic spectrum. We analyzed the stomach contents of 505 striped marlin caught by the sport fishing fleet off Cabo San Lucas, Baja California Sur, Mexico, sampled from October 1987 through December 1989. The most important preys were chub mackerel (Scomber japonicus), California pilchard (Sardinops caeruleus), and jumbo squid (Dosidicus gigas); together these represented ~55% of the striped marlin diet. The daily food consumption was estimated to be 2 kg per day, or ~3.6% of the mean body weight of K. audax. The total biomass of the prey consumed by the striped marlin during the 27 months of sampling around Los Cabos was estimated at 24.8 ton, of which the chub mackerel represented ~29% (7.2 ton), California pilchard just under 16% (3.9 ton), and jumbo squid ~10% (2.5 ton). The feeding habits of K. audax are discussed in terms of the distribution of the epipelagic (neritic and oceanic zones), demersal, and benthic prey, confirming that striped marlin migrate vertically and horizontally in search of their food. Keywords: billfish, striped marlin, diurnal variation, consumption, Cabo San Lucas, Gulf of California, Mexico.Tasa de consumo diario de alimento de Kajikia audax (Philippi, 1887) frente a Cabo San Lucas, golfo de California, México RESUMEN. Se estimó la tasa de consumo diario de alimento del marlín rayado Kajikia audax (Perciformes: Istiophoridae), sobre la base de análisis cualitativos y cuantitativos de su espectro trófico. Se analizó el contenido estomacal de 505 ejemplares capturados por la flota deportiva frente a Cabo San Lucas, Baja California Sur, México muestreados de octubre 1987 a diciembre 1989. Las presas más importantes fueron la macarela del Pacífico (Scomber japonicus), sardina monterrey (Sardinops caeruleus) y calamar gigante (Dosidicus gigas), que en conjunto representaron aproximadamente el 55% de la dieta. La tasa de consumo de alimento fue estimado en 2 kg diarios, lo cual representó aproximadamente el 3,6% del peso corporal de K. audax. La biomasa total de presas consumidas por el marlín rayado durante los 27 meses muestreados en la zona de Los Cabos fue estimada en 24,8 ton, de las cuales la macarela del Pacífico representó alrededor del 29% (7,2 ton), la sardina monterrey poco menos del 16% (3,9 ton) y el calamar gigante aproximadamente el 10% (2,5 ton). Los hábitos alimentarios de K. audax se discutieron según la distribución de las presas epipelágicas (neríticas y oceánicas), demersales y bentónicas; lo cual confirmó la conducta migratoria (movimientos verticales y horizontales) del marlín rayado en busca de su alimento.

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“…Bedford, 1990;Brill et al, 1993). They are also faster than those recorded for bigeye tuna ( Thunnus obesus) (1.5 knots) (Holland et al, 1990b) and albacore (Thunnus alalunga) (1.5-1.6 knots) (Laurs et al, 1977), but they are slightly lower than those for yellowfin tuna ( Thunnus albacares) (1.3-4.2 knots) (Carey and Olson, 1982;Holland et al, 1990b).…”

Section: Discussionmentioning

confidence: 99%

Survival and Movement Patterns of Released Tarpon (Megalops atlanticus)

Edwards

1998

goms

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Vertical and horizontal movements of striped marlin (Tetrapturus audax) near the Hawaiian Islands, determined by ultrasonic telemetry, with simultaneous measurement of oceanic currents

Cited by 109 publications

References 9 publications

The influence of depth on mercury levels in pelagic fishes and their prey

The influence of depth on mercury levels in pelagic fishes and their prey

Daily food intake of Kajikia audax (Philippi, 1887) off Cabo San Lucas, Gulf of California, Mexico

Survival and Movement Patterns of Released Tarpon (Megalops atlanticus)

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