Diet composition of sailfish (Istiophorus platypterus) from the southern Gulf of California, Mexico

Rosas-Alayola, José; Hernández-Herrera, Agustı́n; Galván‐Magaña, Felipe; Abitía-Cárdenas, Leonardo Andrés; Muhlia-Melo, Arturo

doi:10.1016/s0165-7836(01)00344-7

Cited by 37 publications

(29 citation statements)

References 6 publications

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“…Based on average catch rates from January 1990 to June 2000, Gonzalez-Armas et al (2006) confirm that the southern Gulf of California is an important billfish fishing ground, especially for striped marlin, blue marlin and sailfish. High sailfish abundance in this area has been associated with feeding and reproductive activities (Hernández-Herrera and Ramírez-Rodríguez 1998; Rosas-Alayola et al 2002). Gonzalez-Armas et al (2006) confirmed some reproductive activity in the southern Gulf of California for sailfish, but this is not the principal spawning area (Hernández-Herrera and Ramírez-Rodríguez 1998).…”

Section: Discussionmentioning

confidence: 98%

Age and growth of sailfish Istiophorus platypterus (Shaw in Shaw and Nodder, 1792) from Mazatlan, Sinaloa, Mexico

et al. 2011

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Age and growth of the sailfish Istiophorus platypterus were determined for the area off Mazatlan coast, Sinaloa, in the Gulf of California, between September 2002 and August 2003. The lower jaw-fork length and total weight of 572 specimens were measured, and the fourth dorsal spine was collected to determine age. The monthly variation of the sample size displayed a well-defined seasonal pattern, which peaked during the warm period (May-November) and declined during the rest of the year (temperate period). Significant differences were detected in the size structure by sex during the temperate period, with females displaying larger sizes and greater abundance (Female: Male = 3.35:1). In the warm period the size structure was similar, with the sex ratio reaching F:M = 0.73:1. This suggests a different sex-related recruitment in the fishing zone, with males moving more actively than females. While female size remained relatively unchanged over the year, male size increased during the warm period. Age was estimated using the number of growth rings on the cross-sectioned fourth dorsal spine, after the number of absorbed growth rings in the vascularized zone had been estimated. Nine age groups were identified; group-5 was the most abundant, representing 31% of the catch. The trend of the monthly change in the percentage of opaque-edge spines and the average of the marginal increase rate indicated that the formation of growth rings displayed an annual pattern. The von Bertalanffy growth model was adequately fitted to age and back-calculated length data. Significant differences were detected when growth was compared between sexes; females grew faster than males.

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Section: Discussionmentioning

confidence: 98%

Age and growth of sailfish Istiophorus platypterus (Shaw in Shaw and Nodder, 1792) from Mazatlan, Sinaloa, Mexico

et al. 2011

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“…The general conclusion drawn from these studies was that vertical changes in the distribution of these species reflect shifts in the distribution of prey associated with the Deep Scattering Layer (DSL) in response to increased lunar illumination. Organisms inhabiting the DSL such as myctophids, bathylagid fishes and squid species are key components in the diets of billfish, tuna and some shark species , 1999Kemps et al, 1998;Rosas-Alayola et al, 2002;Segura Zarzosa et al, 1997) and are sensitive to changes in light levels migrating closer to the surface over the new moon followed by a movement to deeper waters during the full moon (Blaxter, 1974;Boden and Kampa, 1967;Kampa, 1974). Behavioural responses to lunar phase are not, however, consistent across species.…”

Section: Discussionmentioning

confidence: 99%

Lunar landings—Relationship between lunar phase and catch rates for an Australian gamefish-tournament fishery

2007

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“…As small juveniles these squid are undoubtedly preyed on by numerous pelagic fish and avian species throughout their broad range. In the Gulf of California adult squid serve as prey for both large fishes (Klimley et al 1993, Abitia-Cardenas et al 2002, Rosas-Aloya et al 2002 and marine mammals, particularly sperm whales Physeter macrocephalus (Ruiz-Cooley et al 2004). Thus, jumbo squid serve as an important trophic link between small mesopelagic organisms and top vertebrate predators.…”

Section: Photo: Bob Cranston (Courtesy Of National Geographic Televismentioning

confidence: 99%

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

Gilly¹,

Markaida²,

Baxter³

et al. 2006

Mar. Ecol. Prog. Ser.

199

171

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Diet composition of sailfish (Istiophorus platypterus) from the southern Gulf of California, Mexico

Cited by 37 publications

References 6 publications

Age and growth of sailfish Istiophorus platypterus (Shaw in Shaw and Nodder, 1792) from Mazatlan, Sinaloa, Mexico

Age and growth of sailfish Istiophorus platypterus (Shaw in Shaw and Nodder, 1792) from Mazatlan, Sinaloa, Mexico

Lunar landings—Relationship between lunar phase and catch rates for an Australian gamefish-tournament fishery

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

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