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Balancing organ in certain aquatic invertebrate animals
The statocyst is a balance sensory receptor present in some aquatic invertebrates, including bivalves, cnidarians, ctenophores, echinoderms, cephalopods
Statocyst
organs of gastropods (snails and slugs) include olfactory organs, eyes, statocysts and mechanoreceptors. Gastropods have no sense of hearing. In terrestrial
Sensory_organs_of_gastropods
Phylum of invertebrate animals
burrowing or feeding) in different classes. The foot carries a pair of statocysts, which act as balance sensors. In gastropods, it secretes mucus as a lubricant
Mollusca
Phylum of gelatinous marine animals
to the opposite end). However, since only two of the canals near the statocyst terminate in anal pores, ctenophores have no mirror-symmetry, although
Ctenophora
Phylum of invertebrates with jointed exoskeletons
feet report no pressure. However, many malacostracan crustaceans have statocysts, which provide the same sort of information as the balance and motion
Arthropod
Illustration of a larval ascidian, showing the papillae, cerebral vesicle, ocellus and statocyst
Glossary_of_tunicate_anatomy
Inner-ear structure in vertebrates which detects acceleration
receptors called statocysts can be found in many invertebrate groups but are not contained in the structure of an inner ear. Mollusk statocysts are of a similar
Otolith
Soft-bodied, aquatic invertebrates
situ hybridization resulted in PaxB expression in the lens, retina, and statocysts. These results and the rejection of the prior hypothesis that Pax6 was
Jellyfish
Soft-bodied eight-limbed order of molluscs
mating displays. Attached to the optic capsules are two organs called statocysts (sac-like structures containing a mineralised mass and sensitive hairs)
Octopus
Class of marine cnidarians, true jellyfish
Each rhopalium is typically associated with a pair of sensory pits, a statocyst, and sometimes a pigment-cup ocellus. Most species appear to be gonochorists
Scyphozoa
Class of mollusks
arrangement. Cephalopods have advanced vision, can detect gravity with statocysts, and have a variety of chemical sense organs. Octopuses use their arms
Cephalopod
Largest class of crustaceans
Sensory organs include compound eyes (often stalked), ocelli (simple eyes), statocysts and sensory bristles. The naupliar eye is a characteristic of the nauplius
Malacostraca
Topics referred to by the same term
Statolith may refer to: A structure in the statocyst, which allows certain invertebrates to sense gravity and balance A structure in the statocyte, cells
Statolith
Phylum of soft-bodied invertebrates
A few groups have statocysts – fluid-filled chambers containing a small, solid particle or, in a few groups, two. These statocysts are thought to function
Flatworm
Class of flatworms
and seriates – have statocysts, fluid-filled chambers containing a small solid particle or, in a few groups, two. These statocysts are thought to be balance
Turbellaria
Family of comb jellies without tentacles
opposite end from the mouth) is a statocyst, a balance organ that helps it to orient itself. Papillae surround the statocyst. Their function is unclear, but
Beroidae
Family of shellfish, many edible
ganglia control the scallop's mouth via the palp nerves and connect to statocysts which help the animal sense its position in the surrounding environment
Scallop
Species of squid
the movement of sound waves via organs called statocysts (similar to the human cochlea). Squid statocysts likely respond to low-frequency sounds less than
Colossal_squid
Marine phylum of animals often with radial symmetries
of their arms. Sea urchins have no particular sense organs but do have statocysts that assist in gravitational orientation, and they too have sensory cells
Echinoderm
Superorder of cephalopod molluscs
ganglia above the oesophagus receive sensory information from the eyes and statocysts, and further ganglia below control the muscles of the mouth, foot, mantle
Squid
Class of molluscs
diverticula. The sensory organs of gastropods include olfactory organs, eyes, statocysts and mechanoreceptors. Gastropods have no hearing. In terrestrial gastropods
Gastropod
Genus of bilaterians with a simple body plan
system. In fact, there are no defined organs, except for an anterior statocyst containing flagellated cells and a frontal pore organ. There are no organized
Xenoturbella
Aquatic animal phylum having cnidocytes
free-swimming species of Cubozoa and Scyphozoa possess balance-sensing statocysts, and some have simple eyes. Not all cnidarians reproduce sexually, but
Cnidaria
Order of medusoid hydrozoans
entirely or very much reduced, epidermis ciliated, 1-2 whorls of tentacles, statocysts present or not, club shaped and derived of ecto- and entodermal tissue;
Actinulida
Phylum of animals
a ring comissure of variable complexity. The sensory organs include a statocyst (for balance). Some groups have two unicellular ocelli (simple eyes).
Xenacoelomorpha
Class of marine invertebrates
crevices or under objects. Most species, apart from pencil urchins, have statocysts in globular organs called spheridia. These are stalked structures and
Sea_urchin
Phylum of colonial aquatic invertebrates called moss animals
Aethozooides, Aethozoon, Franzenella, and Monobryozoon, the latter having a statocyst-like organ with a supposed excretory function. The terms Polyzoa and Bryozoa
Bryozoa
Physiological capacity
the polarization of light. [citation needed] Many invertebrates have a statocyst, which is a sensor for acceleration and orientation that works very differently
Sense
Class of echinoderms
a few exceptions: members of the Apodida order are known to possess statocysts, while some species possess small eye-spots near the bases of their tentacles
Sea_cucumber
Deep-ocean dwelling squid in the family Architeuthidae
called statocysts to sense their orientation and motion in water. The age of a giant squid can be determined by "growth rings" in the statocyst's statolith
Giant_squid
Species of cephalopod
maintain agility and buoyancy with little effort because of sophisticated statocysts (balancing organs akin to a human's inner ear) and ammonium-rich gelatinous
Vampire_squid
Species of gastropod
a constant depth. To keep itself upright during swimming, it uses two statocyst gravity-sensing organs that correct it to an upright posture using its
Clione_limacina
Order of hydrozoans which always have a polyp stage
solitary animals, with tentacles arising from the bell margin, lacking statocysts but possessing radial canals. Their gonads are on the manubrium ("handle")
Anthoathecata
Class of algae
siliceous cyst that is formed endogenously. Called statospore, stomatocyst or statocyst, this structure is usually globose and contains a single pore. The surface
Golden_algae
Class of molluscs
adductor muscle that may serve to taste the water or measure its turbidity. Statocysts within the organism help the bivalve to sense and correct its orientation
Bivalvia
Species of comb jelly
as the oral end, is the large mouth and at the other (aboral) end is a statocyst which has a sensory role and is involved in maintaining the animal's equilibrium
Beroe_ovata
Deep-sea gastropod
organs of the scaly-foot gastropod include statocysts surrounded by the oesophageal gland, each statocyst with a single statolith. There are also sensory
Scaly-foot_gastropod
Taxonomic class of animals
Mostly these are simple sensory nerve endings, but they also include statocysts and primitive light-sensitive ocelli. Hydroid colonies are usually dioecious
Hydrozoa
Order of cnidarians with hydrothecae
Most Leptothecata possess statocysts, which are used for defence and protection. The classes that have lost their statocysts have been changed ancestrally
Leptothecata
Marine animals, subphylum of chordates
tail and may have a simple eye, an ocellus, and a balancing organ, a statocyst. When sufficiently developed, the larva of the sessile species finds a
Tunicate
Physiological sense regarding posture
in many marine animals is done with an entirely different organ, the statocyst, which detects the position of tiny calcareous stones to determine which
Sense_of_balance
Phylum of segmented worms
withdraw into their tubes. Some burrowing and tube-dwelling polychaetes have statocysts (tilt and balance sensors) that indicate which way is down. A few polychaete
Annelid
Phylum of marine animals also known as lamp shells
but the cells responsible for this are unknown. Some brachiopods have statocysts, which detect changes in the animals' position. Lifespans range from 3
Brachiopod
Genus of comb jellies
Pawel; Jékely, Gáspár (2026-02-17). "Neural connectome of the ctenophore statocyst". eLife. 14. doi:10.7554/eLife.108420. ISSN 2050-084X. Wikimedia Commons
Mnemiopsis
Distal portion of the forelimb of an animal
folds) Occipital membrane Olfactory organ Nuchal organ Other parts Eyes Statocysts General Chromatophores Photophores Nervous system Squid giant axon Squid
Manus_(anatomy)
orthostatic, protostele, stasimon, stasis, stater, static, statoblast, statocyst, statolith, stela, stele, systasis, system, systematic, systematize, systematology
List of Greek and Latin roots in English/P–Z
List_of_Greek_and_Latin_roots_in_English/P–Z
Order of crustaceans
Features distinguishing lophogastrids from the mysids include the absence of statocysts in their uropods, and the presence of well-developed biramous pleopods
Lophogastrida
Family of crustaceans
(inner branch) of the 3rd to 8th pereopods are not fused and there is no statocyst on the endopod of the uropods (posterior appendage). Female petalophthalmidans
Petalophthalmidae
Paraphyletic class of tunicates comprising sea squirts
extends to form a fin along the tail in the larva. The larva also has a statocyst and a pigmented cup above the mouth, which opens into a pharynx lined
Ascidiacea
Extinct, squid-like, Mesozoic cephalopods
had rows of seven teeth, consistent with modern predatory squid. The statocysts – which give a sense of balance and function much like the cochlea of
Belemnitida
Sensory system that facilitates body balance
which are modified hind wings. Dark cell Migraine-associated vertigo Statocyst List of distinct cell types in the adult human body Inertial Measurement
Vestibular_system
Family of flatworms
intestine, a single pair of lateral nerve cords, and by the absence of a statocyst. Species of the family Macrostomidae are members of a large range of aquatic
Macrostomidae
Class of marine molluscs
likely the most recent eyes to evolve. Although chitons lack osphradia, statocysts, and other sensory organs common to other molluscs, they do have numerous
Chiton
Class of annelid worms
addition to the sensory organs on the head, photosensitive eye spots, statocysts, and numerous additional sensory nerve endings, most likely involved with
Polychaete
Examples of separate lineages of organisms developing similar characteristics
grow new limbs, tail or other body parts, if body parts are lost. The statocyst is a balance sensory receptor independently found in different organisms
List of examples of convergent evolution
List_of_examples_of_convergent_evolution
Small, shrimp-like crustacean
differ from other species within the superorder Peracarida by featuring statocysts on their uropods (located on the last abdominal segment). These help the
Mysida
Excessive displeasing noise
frequencies. Oysters perceive near-field sound vibrations by utilizing statocysts. In addition, they have superficial receptors that detect variations in
Noise_pollution
Directed movement of a cell or organism in response to gravity
either actively or passively. Many microorganisms have receptors like statocysts that allow them to sense the direction of gravity and to adjust their
Gravitaxis
Device that measures proper acceleration
similar organs, but not as part of their hearing organs. These are called statocysts. Mechanical accelerometers are often designed so that an electronic circuit
Accelerometer
Species of bilaterians with a simple body plan
preliminarily called a statocyst, has been observed on the front end of the animal. Two leading hypotheses are that it aids in balance, as statocysts do in other
Xenoturbella_bocki
Order of free-living flatworms
forms a ciliated sac. They possess two pairs of nerve cords and often a statocyst, as well as a single protonephridium. The gonads are unpaired. Unusually
Catenulida
Species of hydrozoan
the numbers of tentacles, numbers of radial canals, numbers of marginal statocysts, and size. These features are fairly plastic, and the numbers of tentacles
Aequorea_victoria
Species of acoel
is about 4 to 5 mm long. In the anterior part (the head), there is a statocyst or otolith: a gravito-sensor that allows the worm to orient itself in
Symsagittifera_roscoffensis
Genus of hydrozoans
numerous alike tentacles in a single row, and free club-shaped marginal statocysts. Arctapodema ampla Vanhöffen, 1902 Arctapodema antarctica Vanhöffen, 1912
Arctapodema
Order of comb jellies with retractable branched tentacles
rhythm rather like that of a Mexican wave. From each balancer in the statocyst a ciliary groove runs out under the dome and then splits to connect with
Cydippida
Species of squid
water column to feed by starlight. An internal balancing organ called a statocyst ensures graceful movement. Magister armhook squid prey upon both benthic
Berryteuthis_magister
Genus of hydrozoans
Up to 80 tentacles line the bell margin, with about an equal number of statocysts. Copepods are a favored prey. This marine hydrozoan is common in warmer
Gonionemus
Phylum of marine, flatworm-like animals
cerebroid ganglion) regenerates in a few weeks. The sensory organs include a statocyst, which presumably helps them orient to gravity, and, in some cases, ancestral
Acoelomorpha
Species of comb jelly
broader than the closed, posterior end. At the posterior end there is a statocyst, a flattened structure shaped like a figure-of-eight. From this, eight
Beroe_gracilis
Class of shelled marine molluscs
connectives. Radular and sub-radular ganglia are also present, as are statocysts with staticonia. Scaphopods have no eyes, no osphradia, or other distinct
Tusk_shell
Superfamily of molluscs
the body is transparent, one can easily see the internal organs and the statocysts with its statoliths (an organ that tells the animal whether it is upside
Pterotracheoidea
Phylum of invertebrates, ribbon worms
have hundreds. A few tiny species that live between grains of sand have statocysts, which sense balance. Paranemertes peregrina, which feeds on polychaetes
Nemertea
Family of hydrozoans
excretory pores, and have 4 simple radial canals and in adults at least 16 statocysts. The tentacles at their margin are hollow and at the side carry cirri;
Lovenellidae
Order of hydrozoans
life histories. It includes genera with medusae with ecto-endodermal statocysts and with gonads alongside their radial canals, and also genera which have
Limnomedusae
Species of acoel
granules. The cerebral ganglion is bilobed and sunken, and there is no statocyst-statolith present. The mouth is positioned on the anterior half of the
Convolutriloba_hastifera
Sensory structures of some jellyfish species
species that possess them. Each rhopalium is capped by a lithocyst, or statocyst, at the terminal end, which is known to sense gravitational change and
Rhopalium
Genus of gastropods
These ganglia are separated by a long, thin commissure and have one statocyst and statolith each, attached dorsally. It has one subintestinal ganglion
Bathyhedyle
Species of hydrozoan
vary greatly in size and shape. This species has eight ecto-endodermal statocysts that are enclosed within mesogloea. There are four perradial marginal
Liriope_tetraphylla
Species of acoel
directly into the digestive syncytium. Newly hatched juveniles possess a statocyst and paired eyes but mature individuals lack both. They also lack a frontal
Waminoa_brickneri
Evolutionary trend
marginal sensory structures associated with the outer nerve ring include statocysts (Singla, 1975), and mechanoreceptors, such as the tactile combs of Aglantha
Cephalization
Species of hydrozoan
conical projection; 64-72 marginal tentacles in adults; 8-9 tentacles and 2 statocysts in each octant; the base of tentacles surrounded by broad thickening of
Haliscera_conica
Species of squid
in 2009. It showed that bigfin reef squids and octopuses utilise their statocysts for detecting vibrations, an organ primarily used for maintaining spatial
Bigfin_reef_squid
Species of comb jelly
The photocytes, which run the length of the comb rows and surround the statocyst, are crimson lake in color. Aside from its type location, B. australis
Beroe_australis
orthostatic, protostele, stasimon, stasis, stater, static, statoblast, statocyst, statolith, stela, stele, systasis, system, systematic, systematize, systematology
List of Greek and Latin roots in English/S
List_of_Greek_and_Latin_roots_in_English/S
Species of hydrozoan
length. It has 200+ tentacles, of 50 cm (1.6 ft) or more, and 1 or 2 statocysts between radial canals. Aequorea vitrina is found in the neritic zone in
Aequorea_vitrina
Effect of gravity on living organisms
involving a statolith's movement due to gravity causing a stimulus inside the statocyst. Gravity has been a constant obstacle that organisms have had to live
Gravitational_biology
Extinct genus of comb jellies
genus, Pleurobrachia, from the North Sea. The specimen does show the statocyst, however. Both specimens of A. hunsrueckiana and P. brasseli are too delicate
Paleoctenophora
Genus of hydrozoans
the undulating margin are four short secondary tentacles, each with a statocyst on either side. The central circular mouth on the oral surface leads to
Bathykorus
Species of crab
a small canal system located under its first antenna called a statocyst. The statocyst contains an agglomerate of sand particles called the statolith
Ovalipes_catharus
Family of acoels
The anterior end has a cluster of frontal glands, a pair of eyes, and a statocyst. The body has a pigmented lens. The intestine and excretory system are
Convolutidae
Species of crustacean
(2006). "The relationship between body size and evoked potentials from the statocysts of the prawn Palaemon serratus". Journal of Experimental Biology. 209
Palaemon_serratus
Species of hydrozoan
about 96 marginal tentacles in adults; about 12 marginal tentacles and 3 statocysts in each octant; thickening of marginal cnidocyst tissue less pronounced
Haliscera_bigelowi
Genus of hydrozoans
Tiaropsis Section of a statocyst and ocellus of Tiaropsis diademata Scientific classification Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order:
Tiaropsis
Genus of flatworms
symbionts. Some species of Paracatenula such as P. galateia possess a statocyst with a single statolith. Although Paracatenula produce sperm and eggs
Paracatenula
Genus of protozoans
where they are mostly strontium. Its structure and function resembles the statocyst of some animals. These vesicles are located on the dorsal rim on the left
Loxodes
Family of hydrozoans
bulbs and 4 statocysts, contrasting with G. guangdongensis complete lack of rudimentary bulbs and excretory papillae and singular statocyst. Rhacostoma
Aequoreidae
Clade of gastropods
Patellagastropoda). Just outside the pedal ganglia are each of the two statocysts (though see Bathyacmaea secunda as an exception to this rule). Like the
Patellogastropoda
Genus of ctenophores
organisms have bi-radial symmetry with a mouth on their front end and a statocyst, or sense organ, at the other end. The sides of their stomachs are lined
Euplokamis
Genus of crustaceans
margins are as wide as or wider than the anterion part of the telson. The statocyst is poorly developed. Type species of the genus is Petalophthalmus inermis
Neobirsteiniamysis
1080/00288330.1967.9515201 Gauldie, R.W., I.F. West & E.C. Förch (1994). Statocyst, statolith, and age estimation of the giant squid, Architeuthis kirki
List of giant squid specimens and sightings (20th century)
List_of_giant_squid_specimens_and_sightings_(20th_century)
STATOCYST
STATOCYST
STATOCYST
STATOCYST
Boy/Male
Arabic, German
Meritorious; Abundant
Girl/Female
Hindu
Girl/Female
Tamil
Jasvandi | ஜஸà¯à®µà®‚தீ
Hibiscus flower
Boy/Male
Hindu, Indian, Kannada, Tamil, Telugu
Artist
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Victory
Girl/Female
Tamil
Goddess Durga
Surname or Lastname
English
English : from an Old English personal name, Ä€cmann, composed of the elements Äc ‘oak’ + mann ‘man’.Probably a translated form of Swedish Ekman.
Male
English
Unisex pet form of English George and Georgia, GEORGIE means "earth-worker, farmer."Â
Girl/Female
Indian
Merciful, Companionate, Kind
Girl/Female
Muslim/Islamic
Evidenced
STATOCYST
STATOCYST
STATOCYST
STATOCYST
STATOCYST