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A list of all pages that have property "Definition" with value "Specialist - sea urchins". Since there have been only a few results, also nearby values are displayed.

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  • Traits:OSPARRegionIArcticWaters  + (Region I is the most northerly OSPAR regioRegion I is the most northerly OSPAR region, characterised by its harsh climate and ice coverage although the ecosystems of this region are still rich. In spite of its low population density, human activities such as fishing and offshore petroleum production remain significant.e petroleum production remain significant.)
  • Traits:OSPARRegionVWiderAtlantic  + (Region V represents the deep waters of theRegion V represents the deep waters of the North-East Atlantic extending across the abyssal plain and the Mid-Atlantic Ridge, and including many seamounts. There have been recent discoveries of a number of different fragile deep-sea habitats (such as hydrothermal vents, carbonate mounds, coral gardens and sponge communities). Human population in the region is restricted to the Azores Archipelago. The main human activities are fishing and maritime transport.vities are fishing and maritime transport.)
  • Traits:SprayZone  + (Region of the shore immediately above the splash zone that is subject to wetting by the spray from breaking waves (Lincoln ''et al.'', 1998).)
  • Traits:SplashZone  + (Region of the shore immediately above the highest levels of the water that is subject to wetting by splash from breaking waves (Lincoln ''et al.'', 1998).)
  • Traits:NonMigratoryResident  + (Remaining within the same area (from Lincoln ''et al.'',1998).)
  • Traits:AsexualReproduction  + (Reproduction not involving the exchange of genetic material, amictic, individuals derived form a single parent (Barnes ''et al.'', 2006); not involving the fusion of gametes (Lincoln ''et al.'', 1998))
  • Traits:ApomicticParthenogenesis  + (Reproduction via single cells /eggs that are derived by mitosis (Barnes ''et al.'', 1993) - amictic.)
  • Traits:Sporogenesis  + (Reproduction via spores)
  • Traits:Monoraphidioid  + (Resembling a crescent moon (see Olenina ''et al.'', 2006))
  • Traits:RotationalEllipsoid  + (Rotational ellipsoid (Olenina ''et al.'', 2006))
  • GravellyMuddySand  + (Sand (50-90%) with gravel (>5%) and mud (see Long, 2006))
  • Traits:MuddySand  + (Sand (50-90%) with mud (see Long, 2006))
  • Traits:GravellySand  + (Sand with 5-30% gravel (see Long 2006))
  • Traits:SandMuddySand  + (Sands and sands with mud where sand is the major fraction (see Long 2006))
  • Traits:IceAssociated  + (Sea ice, icebergs and other ice-associated marine habitats.)
  • Traits:OffshoreSeabed  + (Seabed beyond three miles (5 km) from the shore.)
  • Traits:Seizing  + (Seabird specific - probably not - large predators that pounce and grab also)
  • Traits:Diving  + (Seabird specific?)
  • Traits:Plunging  + (Seabird specific?)
  • Traits:FollowingFishingBoats  + (Seabirds)
  • Traits:FootStirring  + (Seabirds/Wader)
  • Traits:FootPaddling  + (Seabirds/Wader)
  • Traits:PickingfromWaterSurface  + (Seabirds/wader)
  • Traits:Swimming  + (Seabirds/wader)
  • Traits:Floating  + (Seabirds/wader)
  • Traits:Dabbling  + (Seabirds/waders?)
  • Traits:Doliolaria  + (Second free-swimming larvae (after the auricularia) in the Holothuroidea. It is characterized by a series of flagellated rings around a barrel-shaped body (Ruppert & Barnes, 1994; Stachowitsch, 1992).)
  • Traits:Metanauplius  + (Second larval stage in decapod Crustacea; resembles the nauplius but with more appendages (see Stachowitsch, 1992).)
  • Traits:TypeIV  + (Second-order opportunistic species (slight to pronounced unbalanced situations). Mainly small sized polychaetes: subsurface deposit-feeders, such as cirratulids.)
  • Traits:MucusMesh  + (Secretion of a simple or complex mucus mesh to filter food particles from water column (e.g polychaetes ''Chaetopterus'' and larvaceans.)
  • Traits:Ambusher  + (Sedentary or sessile predators, that wait for prey to come to them, and may or may not use a final pounce, traps or lures (e.g. sea anemones, large hydroids, spiders))
  • Traits:CoarseSediments  + (Sediments composed of gravel and sand; inc. gravel, gravelly sand and sandy gravel (Long, 2006))
  • Traits:Autotroph  + (Self-feeding. An organism capable of synthesizing complex organic substances from simple inorganic substrates (Lincoln ''et al.'', 1998).)
  • Traits:Flabellate  + (Shaped like a fan, fanlike (Brusca, 1980).)
  • Traits:FunnelShaped  + (Shaped like a funnel)
  • Traits:EggPropaguleSize  + (Size (diameter) of macrogamete (egg or ovum) in µm, mm, cm.)
  • Traits:Hydrostatic  + (Skeletal support provided by hydrostatic pressure from a fluid filled cavity (e.g. the coelum) surrounded by muscles. Hydrostatic pressure provides skeletal support in sea anemones, jellyfish, nematodes, annelids, echinoderms, and other groups.)
  • Traits:MixedCalcareousMaterial  + (Skeleton composed of a mixture of any of aragonite, calcite, high magnesium calcite or amorphous CaCO3)
  • Traits:CalcareousSkeleton  + (Skeleton composed of calcareous spicules (sponges/echinoderms), plates, spines, bones or other structures)
  • Traits:Filiform  + (Slender and thread-like (Kozloff, 1996).)
  • Traits:SmallTribePridePackPod  + (Small group of individuals that work together for mutual benefit, often held together by familial (matriarchal/patriarchal) bonds (e.g. a pack or wolves, a pod of dolphin, a pride of lions, a tribe of humans).)
  • Traits:Flaccid  + (Soft, limp, flabby (Brusca, 1980).)
  • Traits:Choanocytes  + (Special feeding cell of sponges)
  • Traits:Palps  + (Specialist - Protobranch molluscs)
  • Traits:GillRakers  + (Specialist - e.g. planktivorous fish such as basking shark)
  • Traits:Lophophore  + (Specialist - filter feeding organ e.g. brachiopods, phoronids, bryozoans)
  • Traits:PiercingToxic  + (Specialist - modified radula used to inject toxins, e.g. cone shells)
  • Traits:InhalentSiphon  + (Specialist - modified siphon to capture prey)
  • Traits:OralPodia  + (Specialist - modified tube feet in holothurians)
  • Traits:Radulae  + (Specialist - protrusile anterior region of digestive tract; refers to chitinized teeth along the radular membrane (Stachowitsch, 1992).)
  • Traits:FilerBasket  + (Specialist e.g. sea squirts)
  • Traits:Glochidium  + (Specialist larval form in some freshwater Specialist larval form in some freshwater bivalves, characterized by a bivalve shell, with or with a pair of hooks, and a long adhesive thread or tentacle. It lives as a temporary parasite on the gills or fins of fish. In some species a modified glochidium is termed a 'lasidium' before attachment and a 'haustorium' after attachment (Stachowitsch, 1992).um' after attachment (Stachowitsch, 1992).)
  • Traits:Detected in invasion pathway  + (Species detected in invasion pathways for example in ballast water, or as a hull-fouling organism.)
  • Traits:Management recorded  + (Species for which some management action including prevention has been recorded in its introduced range.)
  • Traits:TypeII  + (Species indifferent to enrichment, always present in low densities with non-significant variations with time (from initial state, to slight unbalance). These include suspension feeders, less selective carnivores and scavengers.)
  • Traits:Alien  + (Species introduced by man into places out of their natural range of distribution.)
  • Traits:Reported  + (Species that are 'reported' to be present but with no further information.)
  • Traits:Of concern  + (Species that are demonstrating aggressive spread and there is concern about its spread OR species where some concern has been recorded- this may be due to known records of its invasiveness and impacts in other areas of their known introduced range.)
  • Traits:Invasive  + (Species that are known to be invasive- those species in whose cases evidence of impact has been recorded or which is spreading aggressively.)
  • Traits:Present/controlled  + (Species that are known to be present in their introduced range and are subject to some control option.)
  • Traits:Sometimes present  + (Species that are reported as present but only 'sometimes'.)
  • Traits:MSFDIndicators  + (Species that comprise indicators or componSpecies that comprise indicators or components of indicators for the Marine Strategy Framework Directive (http://ec.europa.eu/environment/marine/eu-coast-and-marine-policy/marine-strategy-framework-directive/index_en.htm), with emphasis on Descriptors 1, 2, 3, 4 and 6. emphasis on Descriptors 1, 2, 3, 4 and 6.)
  • Traits:Not invasive  + (Species that has not demonstrated any invasive traits in its introduced range.)
  • Traits:Established and stable  + (Species that have become established in their introduced range but are not known to be spreading aggressively.)
  • Traits:Established and expanding  + (Species that have become established in their introduced range and are known to be increasing in abundance and expanding their range.)
  • Traits:Established  + (Species that have become established in their introduced range.)
  • Traits:Border Intercept  + (Species that have been intercepted at borders as a result of detection procedures.)
  • Traits:In captivity/cultivated  + (Species that have been introduced and maintained in captivity or cultivated for example those species that are farmed in aquaculture or mariculture facilities.)
  • Traits:Detected in the wild  + (Species that have been recorded as present in the wild with no further information.)
  • Traits:Eradication unconfirmed  + (Species that have been subject to an eradication event but have not been confirmed as eradicated.)
  • Traits:Eradicated  + (Species that have been subject to an eradication event and have been confirmed as eradicated.)
  • Traits:Recorded in error  + (Species that have reported or recorded in error.)
  • Traits:Native - Endemic  + (Species that is native and endemic to a country or sea area i.e. a species that is unique to a location or habitat.)
  • Traits:Native - Non-endemic  + (Species that is native to an area but is not endemic to it i.e. a species that has a wide native range.)
  • Traits:Native  + (Species that is native to the country or sea area.)
  • Traits:Extirpated  + (Species that were present but have been declared extinct.)
  • Traits:Absent  + (Species that were reported at some time to be present but were not recorded subsequently are reported to be ‘Absent’.)
  • Traits:TypeIII  + (Species tolerant to excess organic matter Species tolerant to excess organic matter enrichment. These species may occur under normal conditions, but their populations are stimulated by organic richment (slight unbalance situations). They are surface deposit-feeding species, as tubicolous spionids.t-feeding species, as tubicolous spionids.)
  • Traits:TypeI  + (Species very sensitive to organic enrichment and present under unpolluted conditions (initial state). They include the specialist carnivores and some deposit-feeding tubicolous polychaetes.)
  • Traits:Occurrence Not specified  + (Species which may be listed as alien or introduced but whose occurrence has not been specified.)
  • Traits:Origin uncertain  + (Species whose biological status is uncertain i.e. it is uncertain if the species is native or alien to the location.)
  • Traits:Invasiveness Uncertain  + (Species whose invasiveness is uncertain.)
  • Traits:Origin unknown  + (Species whose origins cannot be verified OR a species whose origin has not been specified in the source information.)
  • Traits:Introduction unverified  + (Species whose presence is uncertain, maybe reported as present anecdotally but not confirmed.)
  • Traits:Stacks  + (Stacks of indivudal cells/frustules (e.g. in diatoms), like a pack of cards.)
  • Traits:FoodPiracy  + (Stealing food from other birds in flight)
  • Traits:Lithotomous  + (Stone-boring; an organism that burrows into rock.)
  • Traits:CiliaFlagella  + (Swimming is effected by beating of cilia and or flagella; includes the fused cilia of Ctenophores.)
  • Traits:JetPropulsion  + (Swimming is effected by contraction of the body or body cavity to produce a 'jet' of water, e.g. medusae and cephalopods (from Barnes ''et al.'', 2006))
  • Traits:Muscular Contraction (body length)  + (Swimming is effected by muscular contractions along the length of the body, which may be aided by body protrusions or structures (e.g. parapodia, fins).)
  • Traits:AppendagesPaddles  + (Swimming is effected one or more pairs of appendages (legs or paddles) e.g. the pleiopods of Isopod, Amphipod or Decapod crustaceans, or the legs of amphibious vertebrates.)
  • Traits:Commensal (with/on/in)  + (Symbiosis (q.v.) in which one species derives benefit from a common food supply, whilst the other species is not adversely affected (Lincoln ''et al.'', 1998).)
  • Traits:Radial  + (Symmetrical about any plane passed perpendicular to the oral/aboral axis (Barnes ''et al.'', 1993).)
  • Traits:Stinging  + (Tentacles that bear stinging cells to catch, subdue prey (e.g. Cnidaria))
  • Traits:Grasping  + (Tentacles that grab and grasp food items)
  • Traits:StickyMucus  + (Tentacles used to collect particluate food (e.g. polychaete deposit feeders))
  • Traits:Introduced Species Catalog  + (Terms and definitions used in the World Register of Introduced Marine Species (WRIMS).)
  • Traits:Invasiveness  + (Terms used to describe 'Invasiveness' of species.)
  • Traits:Occurrence  + (Terms used to describe 'Occurrence' of species.)
  • Traits:Origin  + (Terms used to describe the 'Origin' of species.)