Gould's squid

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Gould's squid
Nototodarus gouldi.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Oegopsida
Family: Ommastrephidae
Genus: Nototodarus
Species:
N. gouldi
Binomial name
Nototodarus gouldi
(McCoy, 1888)
Gouldssquidmap.jpg
Map of the approximate distribution of the Gould's Squid
Gould's flying squid @ Bremer Marine Park Gould's flying squid @ Bremer Marine Park.jpg
Gould's flying squid @ Bremer Marine Park

Nototodarus gouldi, also known as the Gould's squid, Gould's flying squid, or arrow squid, is a squid belonging to the family Ommastrephidae. It inhabits the tropical and temperate waters of Australia and New Zealand. It is frequently caught and eaten for food. They live up to one year. [1]

Contents

The squid is typically found at depths from 50–200 metres (160–660 ft) off the coasts and shelves of Australia and New Zealand, although it can go as deep as 825 meters. Juveniles are sometimes found just off coasts. [1]

Morphology

They have a mantle length of up to 40 cm (16 in), and a weight of up to 1.6 kg (3.5 lb), and an average weight of 0.7 kg (1.5 lb). Males are smaller than females. [1] The tentacles are an estimated 18 centimeters long, or 45% of the length of the mantle. [2] It has a pair of long feeding tentacles and four pairs of shorter tentacles at its anterior end. Its skin varies moderately in color, ranging from light pink or brown to brick red, with a dark dorsal stripe on its mantle. [1]

Biology and life cycle

Like all squid, the Gould's squid is a predator. It eats smaller fish, such as barracudas, as well as other squids, [2] and cannibalism has sometimes been observed. Prey is caught by the tentacles, moved towards the head, and then chewed and swallowed by the sharp beak underneath the tentacles. Like many other squid, it is eaten by birds, large fish, sharks, and marine mammals. [1]

At around 6 months of age, the squid becomes sexually mature. A female squid will store a spermatophore from the male inside of buccal pouches inside of her mouth. Eggs become fertilized when they pass through the mouth, and they are then released into the water as a free-floating, jelly-like goo, which hatches into young squids 1–2 months after they are released. Both genders will die shortly after they spawn. [1] Although a definite peak in spawning has been observed from February to March, adults can spawn at any time of the year. [2]

Uses and fishing

Gould's squid are commonly caught using jigging (they are considered inedible if caught by trawling [3] ) and eaten in Australia and New Zealand. [4] However, their population swings, short shelf lives, and variable size make them a difficult squid to catch. [5] The highest catch ever (7,914 tons) was reported from Japanese fishing boats. Since then, that number has generally gone down. In 2017, a total of 828 tons of squid were reported to be caught. The cause of this decline is unclear. However, they are neither considered over-fished nor endangered. [5]

Related Research Articles

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A squid is a mollusc with an elongated soft body, large eyes, eight arms, and two tentacles in the orders Myopsida, Oegopsida, and Bathyteuthida. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are mainly soft-bodied, like octopuses, but have a small internal skeleton in the form of a rod-like gladius or pen, made of chitin.

<span class="mw-page-title-main">Giant squid</span> Deep-ocean dwelling squid in the family Architeuthidae

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<span class="mw-page-title-main">Ommastrephidae</span> Family of squids

Ommastrephidae is a family of squid containing three subfamilies, 11 genera, and over 20 species. They are widely distributed globally and are extensively fished for food. One species, Todarodes pacificus, comprised around half of the world's cephalopod catch annually.

<span class="mw-page-title-main">Jigging</span> Practice of fishing with a jig

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<span class="mw-page-title-main">Humboldt squid</span> Species of cephalopod

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<i>Taningia danae</i> Species of cephalopods

Taningia danae, the Dana octopus squid, is a species of squid in the family Octopoteuthidae. It is one of the largest known squid species, reaching a mantle length of 1.7 m (5.6 ft) and total length of 2.3 m (7.5 ft). The largest known specimen, a mature female, weighed 161.4 kg (356 lb).[nb a]

<span class="mw-page-title-main">Cephalopod size</span> Body variation

Cephalopods, which include squids and octopuses, vary enormously in size. The smallest are only about 1 centimetre (0.39 in) long and weigh less than 1 gram (0.035 oz) at maturity, while the giant squid can exceed 10 metres (33 ft) in length and the colossal squid weighs close to half a tonne (1,100 lb), making them the largest living invertebrates. Living species range in mass more than three-billion-fold, or across nine orders of magnitude, from the lightest hatchlings to the heaviest adults. Certain cephalopod species are also noted for having individual body parts of exceptional size.

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Thysanoteuthis rhombus, also known as the diamond squid,diamondback squid, or rhomboid squid, is a large species of squid from the family Thysanoteuthidae which is found worldwide, throughout tropical and subtropical waters. T. rhombus is given its name for the appearance of the fins that run the length of the mantle. They are a fast growing species with a lifespan of approximately 1 year. The diamond squid is the only cephalopod species known to be monogamous. T. rhombus often preys on fish and other small cephalopods at varying water depths. This species is commercially fished in Japan, specifically in the Sea of Japan and Okinawa.

<span class="mw-page-title-main">Japanese flying squid</span> Species of squid

The Japanese flying squid, Japanese common squid or Pacific flying squid, scientific name Todarodes pacificus, is a squid of the family Ommastrephidae. This animal lives in the northern Pacific Ocean, in the area surrounding Japan, along the entire coast of China up to Russia, then spreading across the Bering Strait east towards the southern coast of Alaska and Canada. They tend to cluster around the central region of Vietnam.

<span class="mw-page-title-main">Colossal squid</span> Species of squid

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Nototodarus sloanii is a species of squid commonly known as the New Zealand arrow squid or Wellington flying squid. It is also known by its Māori name of wheketere. It is a favoured prey species of a number of marine mammals and diving birds. It is an important food source for the New Zealand fur seal and two endangered species: the New Zealand sea lion and the yellow-eyed penguin. N. sloanii is sought by trawler fishermen for human consumption; New Zealand sea lions are frequently caught in trawl nets and drowned when feeding on N. sloanii.

<i>Illex argentinus</i> Species of cephalopod known as the Argentine shortfin squid

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<span class="mw-page-title-main">Bigfin reef squid</span> Species of squid


Sepioteuthis lessoniana, commonly known as the bigfin reef squid, tiger squid, glitter squid, oval squid, or northern calamari, is a species of loliginid squid. It is one of the three currently recognized species belonging to the genus Sepioteuthis. Studies in 1993, however, have indicated that bigfin reef squids may comprise a cryptic species complex. The species is likely to include several very similar and closely related species.

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<span class="mw-page-title-main">Antarctic flying squid</span> Species of squid

The Antarctic flying squid is a species of squid from the subfamily Todarodinae of the family Ommastrephidae, a family of pelagic squid from the order Oegopsida. It has a circumglobal distribution in the seas around the lower latitudes of the Southern Ocean.

<span class="mw-page-title-main">European flying squid</span> Species of squid

The European flying squid is a species of squid from the continental slope and oceanic waters of the eastern Atlantic Ocean and the Mediterranean Sea. It is the type species of the genus Todarodes, the type genus of the subfamily Todarodinae of the pelagic squid family Ommastrephidae. It is a species which is targeted by some fisheries, although it is more often a bycatch.

<i>Doryteuthis gahi</i> Species of squid

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References

  1. 1 2 3 4 5 6 "Gould's squid". Australian Fisheries Management Authority. Retrieved 30 April 2019.
  2. 1 2 3 Roper, Clyde; Sweeney, Michael (1984). FAO Species Catalogue Vol. 3. Cephalopods of The World. An Annotated and Illustrated Catalogue of Species of Interest to Fisheries. Rome: FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS.
  3. "Best Fish Guide 2017". New Zealand Forest and Bird. Retrieved 3 May 2019.
  4. "Gould's Squid". Department of Primary Industries, Parks, Water, and Environment. Retrieved 30 April 2019.
  5. 1 2 "Southern Squid Jig Fishery". Department of Agriculture and Water Resources. Retrieved 30 April 2019.