Feeding habits of billfishes (Carangaria: Istiophoriformes) in the Ecuadorian Pacific Ocean

Loor-Andrade, Peggy; Pincay-Espinoza, Jonathan E.; Carrera‐Fernández, Maribel; Rosas‐Luis, Rigoberto

doi:10.1590/1982-0224-20160162

Cited by 14 publications

(7 citation statements)

References 39 publications

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“…The diet composition of the sailfish is mainly composed of fish (75.51%), mainly Auxis thazard (52.76%) and cephalopods (28.48%) with Liligo vulgaris (22.71%) being most represented, with fish species most frequently eaten and therefore being classified as the main food source for this species. This agrees with the results of other studies conducted elsewhere in the world [12,[37][38][39][40] . The sailfish also consumed small proportions of mesopelagic prey (e.g., Gempylidae).…”

Section: Results and Discusionsupporting

confidence: 93%

Feeding ecology of the sailfish Istiophorus platypterus Shaw, 1792 from the coastal waters off Côte d’Ivoire, West Africa

2022

JCBSC

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The feeding habits of Istiophorus platypterus from the coastal waters off Côte d'Ivoire were examined, based on captures made from January 2018 to December 2019 by artisanal fishers of Côte d'Ivoire. Diet was described using the Index of Relative Importance (%IRI) according sexes, size groups and marine seasons. The food overlap was analysed using the Morisita index. A total of 279 specimens ranging in size from 106 to 239 cm lower jaw fork length (LJFL) were used. Of the stomachs examined, 198 (70.96%) contained food and 81 (29.03%) were empty. The results indicated that sailfish has epipelagic and meso-bathypelagic feeding habits, preying upon a wide number of prey taxa (22 species) but with a diet dominated by teleost fishes, especially Auxis thazard (52.76 %IRI). The Morisita index and the Spearman rank correlation coefficient showed similarity of the diet between sexes (Cλ > 0.60; Rs = 0.675 and p = 0.0004, marine seasons (Cλ > 0.60; Rs = 0.538 and p = 0.008) and size (Cλ < 0.60; Rs = 0.58 and p = 0.003). The Amundsen Feeding ecology… Marius Trésor DANHI et al.

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Section: Results and Discusionsupporting

confidence: 93%

Feeding ecology of the sailfish Istiophorus platypterus Shaw, 1792 from the coastal waters off Côte d’Ivoire, West Africa

2022

JCBSC

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“…This finding is consistent with earlier studies carried out in the region (Lasso and Zapata 1999; Comparing dolphinfish diet with that of other large pelagic fishes co-occurring in the region may be useful to infer trophic relationships. Assuming that interspecific food competition occurs when the presence of a food item is more than 25% in two or more predators (Johnson 1977), we found that niche partitioning occurs between dolphinfish and yellowfin tuna, swordfish (Xiphias gladius), and striped marlin (Kajikia audax) in the southeastern Pacific Ocean (see previous studies for yellowfin tuna, striped marlin and swordfish; Alverson 1963;Baque-Menoscal et al 2012;Rosas-Luis et al 2016;Varela et al 2017b;Loor-Andrade et al 2017;Zambrano-Zambrano et al, 2019). Off eastern Australia, Young et al (2010) reported that these predators feed on different 13.0 ± 22.1 5.7 ± 1.4 3.7 ± 0.7…”

Section: Discussionmentioning

confidence: 74%

Spatial- and size-related shifts in feeding habits of the common dolphinfish (Coryphaena hippurus) in the Southeast Pacific Ocean

Pincay-Espinoza

Varela

2022

Environ Biol Fish

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Feeding habits of common dolphinfish (Coryphaena hippurus) were investigated in the Southeast Pacific Ocean using stomach content analysis. Stomachs were collected from 1506 individuals ranging between 18 and 187 cm in fork length. The fish were caught by longliner boats in 2009–2017. Based on percentage of wet weight (%Wi), percentage of number (%Ni), and frequency of occurrence (%Oi), flyingfishes were the predominant prey, followed by the cephalopods jumbo squid (Dosidicus gigas) and argonaut (Argonauta spp.). Permutational multivariate analysis of variance (PERMANOVA) detected significant differences between zones (p < 0.001). PERMANOVA also revealed two size-related shifts in feeding habits to occur at FL ~ 80 cm and FL ~ 110 cm (p < 0.001). Cumulative prey curves did not reach an asymptote in any of the zones and size classes, which may be attributed to the fine taxonomic resolution used. Spatial variations in daily meal ranged between 296.3 and 438.9 g day−1, corresponding to daily ration of 6.1–8.2% body mass BM day−1. Otherwise, size-related variations in both DM and DR were observed. Thus, while daily food intake increased with size from 177.3 for the smallest fish (LF < 80 cm) to 496.7 g day−1 for the largest ones (LF ≥ 110 cm), DR decreased from 13.0 ± 22.1 to 3.7 ± 0.7 BM day−1. The present results contribute to improve the understanding of dolphinfish feeding habits in the Southeast Pacific Ocean.

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“…The striped marlin Kajikia audax (Philippi 1887) is a widely distributed istiophorid billfish species in tropical and temperate waters through the Indo‐Pacific region. K. audax feed largely on epipelagic fishes, such as scombrids (Loor‐Andrade et al ., 2017; Shimose et al ., 2010), carangids (Young et al ., 2018) and molids (Shimose et al ., 2010), but also on cephalopods (Evans & Wares, 1972; Young et al ., 2018). They reach up to 224 kg in weight and live to at least 11 years old (Collette et al ., 2011; Hinton & Maunder, 2009).…”

Section: Introductionmentioning

confidence: 99%

Movement and habitat use of striped marlin Kajikia audax in the Western Indian Ocean

Rohner

Bealey²,

Fulanda

et al. 2020

Journal of Fish Biology

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Striped marlin Kajikia audax are globally Near Threatened and their stock in the Indian Ocean was last assessed as "overfished and subject to overfishing". Significant gaps in our understanding of their ecology remain, hampering the efforts of fisheries managers to ensure stock sustainability. There is a particular lack of fisheries-independent data. Here we present the results from the first large-scale satellite tracking study of K. audax in the Indian Ocean. We tagged 49 K. audax with pop-up archival satellitelinked tags off the Kenyan coast from 2015 to 2019. Individuals were highly mobile, covering horizontal distances of up to 9187 km over periods ranging up to 183 days, with a mean daily distance of 48 km. Long-distance movements were recorded to the east and north of East Africa, with the most distant tracks extending north to the Arabian Sea and east to near the Maldives. None of the K. audax swam south of East Africa. Kernel utilization distributions of fish locations demonstrated their shifting seasonal activity hotspots. Over the sport-fishing season (and tagging period) in Kenya, from December to March, K. audax typically stayed off the East African coast. After March, the activity hotspot shifted north to a region close to the Horn of Africa and Socotra Island. Remotely sensed sea surface temperature and chlorophyll-a maps indicated that this seasonal movement could be driven by a shift in prey availability. Our results show the high mobility of K. audax in the Western Indian Ocean, and that individuals seasonally range between two major fishing areas.

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Feeding habits of billfishes (Carangaria: Istiophoriformes) in the Ecuadorian Pacific Ocean

Cited by 14 publications

References 39 publications

Feeding ecology of the sailfish Istiophorus platypterus Shaw, 1792 from the coastal waters off Côte d’Ivoire, West Africa

Feeding ecology of the sailfish Istiophorus platypterus Shaw, 1792 from the coastal waters off Côte d’Ivoire, West Africa

Spatial- and size-related shifts in feeding habits of the common dolphinfish (Coryphaena hippurus) in the Southeast Pacific Ocean

Movement and habitat use of striped marlin Kajikia audax in the Western Indian Ocean

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