ISTIOPHORUS PLATYPTERUS PDF
Istiophorus amarui Curtis, Istiophorus gladius greyi Nichols & Murphy, Istiophoru greyii de Buen, Istiophorus platypterus Whitehead, A Sailfish, Istiophorus platypterus, hunting sardines off the coast of Mexico. Source: Peter G. Allinson, M.D. / Marine Photobank. License: CC BY Attribution-. Indo-Pacific sailfish (Istiophorus platypterus) can be found in both temperate and tropical waters throughout the world’s oceans. They generally have a tropical.
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Food and Agriculture Organization of the United Nations for a world without hunger. Fisheries and Aquaculture Department. Print PDF Search species.
Black and white drawing: Scientific Name with Original Description. First dorsal fin sail-like and remarkably higher than greatest body depth; pelvic fins very long, nearly reaching to anus, with a well developed membrane. Pectoral and caudal fins short compared with those of Istiophorus platypteruz in young up to about 90 cm body length. Launch the Aquatic Species Distribution map viewer.
IUCN Red List of Threatened Species
This species shows a strong tendency to come close to the shore, even though a few individuals have been caught in the central parts of the oceans. They are also fairly abundant off the northern coast of Australia and around the Hawaiian Islands, India and Sri Lanka, but have been seldom seen off the Pacific coast of South America from Peru to Chile.
The Indo-Pacific sailfish is an epipelagic and oceanic species,usually found above the thermocline.
It shows a strong tendency to approach continental coasts, islands and reefs. In the western Pacific, the distribution of postlarvae and adults istiophorjs to be closely related to the Kuroshio Current, and the densest concentrations seem to coincide with the spawning season. This is also the time of highest biological productivity in the surface waters caused by a mixing of waters resulting from the junction of the southward-flowing Somalia Current and the northward-flowing East African Coastal Current.
In the Sea of Japan, considerable numbers of individuals of this species migrate in schools northward with the warm Tsushima Current a branch of the Kuroshio during summer peak in later summerand southward against the current during autumn peak in early autumnand are caught in these periods by the coastal setnets. These schools consist of young 55 to cm body length and adults to cm body length with no fish of intermediate sizes caught by the setnets. Sometimes the young and the adults are mixed in the catches, but more often they are landed separately.
Usually, the young form more dense schools than the adults. In the East China Sea, the Indo-Pacific sailfish migrates northward in istiophorjs and returns southward in autumn where it overwinters in the southernmost area; fish under cm eye-fork length move into the area between May and July while those over cm migrate southward out of the area, probably for spawning.
Spawning platyypterus this species occurs with males and females swimming in pairs or with two or three males chasing a single female probably mating behaviour. The ripe ovarian eggs are about 0. Eggs shed from a captured isitophorus in the Indian Ocean averaged 1. The feeding behaviour of I. They then drove at the prey at full speed with their istiohporus completely folded back and once they had caught up with it, they suddenly made sharp turns with their fins expanded to confront a part of the school and then hit the prey with the bill.
Subsequently they isttiophorus the killed and stunned fish, usually head first. istioporus
Surprisingly, several individuals showed a kind of team-behaviour in capturing the prey. The habitat of this species is strikingly different from that of the closely related Tetrapturus angustirostris which does not usually occur within km off the coast, while M. The major forage items of the Indo-Pacific sailfish are fishes and squids, istiophlrus the adults are fairly opportunistic feeders and take almost any food they come across.
During several longline cruises of Japanese research vessels in the eastern North Pacific Ocean, adult I. Large pelagic sharks, the killer whale and other related species attack billfishes and tunas hooked by longlines, but predation on free-swimming tunas and billfishes is thought to be pkatypterus rare. This species reaches a maximum size istipphorus cm in total length and kg in weight. In the sports fishery all tackle angling record corresponds to a fish of Another very large fish Other records over 85 kg are the following: All-line-class world records up to for both men and women recognized by IGFA are from the eastern Pacific, except the one for the women’s lb line class of lb already mentioned from Yanuca, Fiji.
In sportsfishing at Malindi, Kenya, the majority of individuals caught ranged from to cm fork length to cm total length and from The istio;horus size of the individuals caught by longlines is unimodal, about to cm istiiphorus length, while it is bimodal in those caught by driftnets and setnets, about 50 to cm and plztypterus cm body length, respectively.
In the period from and catches of I. The total world catch was 10 t in7 t in7 t in6 t in and 7 platpyterus in In Fishing Area 77 eastern central Pacificthe Korean and Japanese landings have decreased remarkably in recent years: It should be noted that the catch statistics given for this species by Japanese longliners include Tetrapturus angustirostrisbut that the share of the latter species in these catches is quite negligible.
The total catch reported for this species to FAO for was 18 t.
Indo-Pacific sailfish are often taken as bycatch by the commercial surface tuna longliners. They are also caught by commercial fishermen with surface driftnetsand by trollingharpooning and setnetting. In sportsfishing this species is caught by surface trolling.
The flesh is dark red, and not as good as that of marlins. In summer it is good for sashimi sliced flesh with soy-sauce and horse radish or sushi vinegared boiled rice with sliced flesh and horse radish, dipped in soy-sauce during the meal.
Billfishes of the World.