Hemisquilla

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Hemisquilla
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Stomatopoda
Family: Hemisquillidae
Genus: Hemisquilla
Hansen, 1895
Species

See text

Hemisquilla is a genus of mantis shrimp, and the only genus in the family Hemisquillidae. [1] It contains four species distributed in Australia and the Americas. Species in the genus typically eat snails, fish, rock oysters, and smaller crustaceans like crabs. They are preyed upon by larger bony fishes and cephalopods. [1] It is the most basal living mantis shrimp lineage, and the sister group to all other mantis shrimp. [2]

Contents

Species

Four species are recognized: [3]

Anatomy

Prey capture in Hemisquilla species is extremely rapid. Contact with the prey is made within 4-10 milliseconds, and the striking limb moves at a linear velocity of around 10 meters per second. [4] [5] There are five physiologically different motor units composed of muscle fibers that work together to make this rapid strike possible. [6]

Related Research Articles

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Mantis shrimp are carnivorous marine crustaceans of the order Stomatopoda. Stomatopods branched off from other members of the class Malacostraca around 340 million years ago. Mantis shrimp typically grow to around 10 cm (3.9 in) in length, while a few can reach up to 38 cm (15 in). A mantis shrimp's carapace covers only the rear part of the head and the first four segments of the thorax. Varieties range in colour from shades of brown to vivid colours, with more than 520 species of mantis shrimp known. They are among the most important predators in many shallow, tropical and subtropical marine habitats. However, despite being common, they are poorly understood, as many species spend most of their lives sheltering in burrows and holes.

<i>Odontodactylus</i> Genus of crustaceans

Odontodactylus is a genus of mantis shrimp, the only genus in the family Odontodactylidae. Mantis shrimp of the genus Odontodactylus can not only detect circular polarisation of light, but can also detect polarised light reflecting off their telson and uropods.

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<span class="mw-page-title-main">Lysiosquillidae</span> Family of crustaceans

The Lysiosquillidae or banded mantis shrimps are a family of mantis shrimp, comprising some of the largest known mantis shrimp species. The most common and best known species is Lysiosquillina maculata, the zebra mantis shrimp.

<i>Squilla mantis</i> Species of crustacean

Squilla mantis is a species of mantis shrimp found in shallow coastal areas of the Mediterranean Sea and the Eastern Atlantic Ocean: it is also known as "pacchero" or "canocchia". Its abundance has led to it being the only commercially fished mantis shrimp in the Mediterranean.

<i>Oratosquilla oratoria</i> Species of crustacean

Oratosquilla oratoria, the Japanese mantis shrimp, is a species of mantis shrimp found in the western Pacific. It is widely harvested in Japan and eaten as sushi. Like other members of its order it has a powerful spear, which it uses to hunt invertebrates and small fish. It grows to a length of 185 millimetres (7.3 in), and lives at depths of 10–100 metres (33–328 ft).

Platysquilla eusebia is a species of mantis shrimp in the family Nannosquillidae, from the Mediterranean Sea and north-eastern Atlantic Ocean. It is a spearer, and grows up to 7 cm (2.8 in) long.

<i>Lysiosquillina maculata</i> Species of mantis shrimp

Lysiosquillina maculata, the zebra mantis shrimp, striped mantis shrimp or razor mantis, is a species of mantis shrimp found across the Indo-Pacific region from East Africa to the Galápagos and Hawaiian Islands. At a length up to 40 cm, L. maculata is the largest mantis shrimp in the world. L. maculata may be distinguished from its congener L. sulcata by the greater number of teeth on the last segment of its raptorial claw, and by the colouration of the uropodal endopod, the distal half of which is dark in L. maculata but not in L. sulcata. A small artisanal fishery exists for this species.

Aeschronectida is an extinct order of mantis shrimp-like crustaceans which lived in the Mississippian subperiod in what is now Montana. They exclusively lived in the Carboniferous, or the age of amphibians. They have been found mostly in the U.S. and in the British Isles, in 1979 species were found in the Madera Formation in New Mexico. Aeschronectida was first identified appearing in Continental Europe in around 2014. While sharing similar characteristics to Stomatopoda, they lack certain physical characteristics of that taxon. The first species of Aeschronectida is accredited to Frederick R. Schram. They diverge substantially from typical hoplocaridan morphology by having more unmodified thoracopods. It's theorized that these thoracopods evolved to become more specialized, making them potential ancestors to Stomatopoda.

<i>Gonodactylus smithii</i> Species of crustacean

Gonodactylus smithii, also known as the purple spot mantis shrimp or Smith's mantis shrimp, is a species of the smasher type of mantis shrimp. G. smithii are the first animals discovered to be capable of dynamic polarization vision. They are identified by their distinctive meral spots ranging from maroon to purple with a white ring, though those that inhabit depths below 10 meters tend to be colored maroon. They also have raptorial dactyles, specialized forelimbs that are pigmented green and red, and antennal scales that are yellow.

<span class="mw-page-title-main">Malcolm Burrows</span> British zoologist

Malcolm Burrows FRS is a British zoologist, and emeritus professor of zoology at the University of Cambridge. His area of research specialization is in the neural control of animal behaviour particularly in those of small invertebrates. Some of his research examines the circuitry of neurons, muscles and the mechanics of joints involved in the rapid movements and leaps of insects.

<i>Acanthosquilla derijardi</i> Crustacean from the Indo-Pacific region

Acanthosquilla derijardi is a species of stomatopod crustacean. Its distribution is widespread throughout the Indo-West Pacific. The species was initially described by the American carcinologist Raymond B. Manning in 1970. Its junior synonym, A. sirindhorn, was named in 1995 in honor of Princess Sirindhorn of Thailand.

<i>Gonodactylus chiragra</i> Species of crustacean

Gonodactylus chiragra is a medium to large mantis shrimp that is distributed widely throughout the West Indo-Pacific.

Hemisquilla braziliensis is a species of mantis shrimp native to South America.

Hemisquilla californiensis is a species of mantis shrimp native to the northern Pacific.

Hemisquilla ensigera is a species of mantis shrimp. Two formerly recognized subspecies are now considered to be separate species.

<i>Tyrannosculda</i> Extinct genus of mantis shrimp

Tyrannosculda is an extinct genus of mantis shrimp which lived during the Late Jurassic in southern Germany. It was named in 2021, with T. laurae as the type and only species. Several fossil specimens are known, representing various growth stages.

<i>Tyrannophontes</i> Extinct genus of mantis shrimp

Tyrannophontes is an extinct genus of mantis shrimp that lived during the late Carboniferous period in what is now the Mazon Creek fossil beds of Illinois. It is the only genus in the family Tyrannophontidae. The type species, T. theridion, was described in 1969 by Frederick Schram. A second, much larger species, T. gigantion, was also named by Schram in 2007. Another species, T. acanthocercus from the Bear Gulch Limestone of Montana, was formerly assigned to Tyrannophontes, but has now been moved to the genus Daidal.

<i>Daidal</i> Extinct genus of mantis shrimp

Daidal is an extinct genus of mantis shrimp that lived during the Carboniferous period. It is the only genus in the family Daidalidae. Three species are currently placed within the genus. Fossils of the type species, D. acanthocercus, have been found in the Bear Gulch Limestone of Montana. A second species, D. pattoni, is known from the Lower Limestone Formation of Scotland, and the third species, D. schoellmanni, was discovered in Westphalia, Germany. The genus has been proposed to be polyphyletic, with D. pattoni possibly being an earlier diverging lineage, though more specimens and research are needed to confirm this.

<i>Sculda</i> Extinct genus of mantis shrimp

Sculda is an extinct genus of mantis shrimp known from the late Jurassic to late Cretaceous of Germany and Lebanon. Although several species have been assigned to it, some are now deemed dubious or moved to different genera. It was a moderate-sized crustacean, measuring no more than 50 mm (2.0 in) long. Sculda would have lived in a marine environment and been a predatory animal, likely smashing its prey with the widened segment of its raptorial appendages before cutting it with the sharp appendage tips.

References

  1. 1 2 "Hemisquilla - Encyclopedia of Life". eol.org. Retrieved 2022-03-12.
  2. Van Der Wal, Cara; Ahyong, Shane T.; Ho, Simon Y.W.; Lo, Nathan (2017-09-21). "The evolutionary history of Stomatopoda (Crustacea: Malacostraca) inferred from molecular data". PeerJ. 5: e3844. doi: 10.7717/peerj.3844 . ISSN   2167-8359. PMC   5610894 . PMID   28948111.
  3. Stephenson, William (1967). "A COMPARISON OF AUSTRALASIAN AND AMERICAN SPECIMENS OF HEMISQUILLA ENSIGERA (OWEN, 1832) (CRUSTACEA: STOMATOPODA)" (PDF). Proceedings of the United States National Museum. 120 (3564).
  4. Burrows, M. (1969-12-01). "The mechanics and neural control of the prey capture strike in the mantid shrimps Squilla and Hemisquilla". Zeitschrift für vergleichende Physiologie. 62 (4): 361–381. doi:10.1007/BF00299261. ISSN   1432-1351. S2CID   8741172.
  5. Burrows, Malcolm; Hoyle, Graham (March 1972). "Neuromuscular physiology of the strike mechanism of the mantis shrimp,Hemisquilla". Journal of Experimental Zoology. 179 (3): 379–393. doi:10.1002/jez.1401790309. ISSN   0022-104X.
  6. McNeill, Patricia; Burrows, Malcolm; Hoyle, Graham (March 1972). "Fine structure of muscles controlling the strike of the mantis shrimp,Hemisquilla". Journal of Experimental Zoology. 179 (3): 395–415. doi:10.1002/jez.1401790310. ISSN   0022-104X.