Distribution data supplied by the Ocean Biodiversity Information System (OBIS). To interrogate UK data visit the NBN Atlas.Map Help
Researched by | Karen Riley & Susie Ballerstedt | Refereed by | This information is not refereed |
Authority | (Linnaeus, 1758) | ||
Other common names | - | Synonyms | Pomatoceros triqueter |
The calcareous tube of Spirobranchus triqueter is 3.5 mm wide and up to 25 mm long. It is white, smooth and irregularly curved with a single, median ridge that ends in a projection over the anterior opening. The operculum bears a shallow, dish-shaped plug (ampulla) which is often conical distally, and may have projections on the crown. The colouration of the body is bright but variable, and the crown of tentacles (radioles) are banded with various colours.
- none -
Phylum | Annelida | Segmented worms e.g. ragworms, tubeworms, fanworms and spoon worms |
Class | Polychaeta | Bristleworms, e.g. ragworms, scaleworms, paddleworms, fanworms, tubeworms and spoon worms |
Order | Sabellida | |
Family | Serpulidae | |
Genus | Spirobranchus | |
Authority | (Linnaeus, 1758) | |
Recent Synonyms | Pomatoceros triqueter |
Typical abundance | No information found | ||
Male size range | up to 25mm | ||
Male size at maturity | |||
Female size range | Small(1-2cm) | ||
Female size at maturity | |||
Growth form | Vermiform segmented | ||
Growth rate | 1.5mm/month | ||
Body flexibility | High (greater than 45 degrees) | ||
Mobility | |||
Characteristic feeding method | Active suspension feeder, No information | ||
Diet/food source | |||
Typically feeds on | Plankton and detritus | ||
Sociability | |||
Environmental position | Epibenthic | ||
Dependency | Independent. | ||
Supports | No information | ||
Is the species harmful? | No No text entered |
Growth
Feeding & Respiration
Thomas (1940) reviewed feeding and respiration in the polychaete. Spirobranchus (as Pomatoceros) triqueter never leaves its tube. Occasionally the posterior end of the tube becomes blocked by a calcareous plate with holes in. Respiration and excretion take place using cilia action to set up currents, bringing water in and down the length of the tube and flushing it back out the same way. Respiration occurs through the surface of the body and the branchial crown.
Feeding takes place by spreading apart its branchial filaments to expose a central groove. Using cilia action, it induces a current and transports food particles towards it mouth. If particles are too large or too numerous, the tip of a filament bends over and removes it. No sorting of food particles takes place.
Physiographic preferences | Enclosed coast / Embayment, Open coast |
Biological zone preferences | Lower infralittoral, Sublittoral fringe, Upper circalittoral, Upper infralittoral |
Substratum / habitat preferences | Artificial (man-made), Bedrock, Cobbles, Crevices / fissures, Gravel / shingle, Large to very large boulders, Pebbles, Small boulders |
Tidal strength preferences | Moderately Strong 1 to 3 knots (0.5-1.5 m/sec.), Strong 3 to 6 knots (1.5-3 m/sec.), Very Weak (negligible), Weak < 1 knot (<0.5 m/sec.) |
Wave exposure preferences | Exposed, Extremely sheltered, Moderately exposed, Sheltered, Very exposed, Very sheltered |
Salinity preferences | Full (30-40 psu) |
Depth range | Up to 70m |
Other preferences | No text entered |
Migration Pattern | Non-migratory / resident |
Reproductive type | Protandrous hermaphrodite | |
Reproductive frequency | Annual episodic | |
Fecundity (number of eggs) | No information | |
Generation time | Insufficient information | |
Age at maturity | Approximately 4 months | |
Season | See additional information | |
Life span | See additional information |
Larval/propagule type | - |
Larval/juvenile development | Planktotrophic |
Duration of larval stage | 11-30 days |
Larval dispersal potential | Greater than 10 km |
Larval settlement period | See additional information |
The MarLIN sensitivity assessment approach used below has been superseded by the MarESA (Marine Evidence-based Sensitivity Assessment) approach (see menu). The MarLIN approach was used for assessments from 1999-2010. The MarESA approach reflects the recent conservation imperatives and terminology and is used for sensitivity assessments from 2014 onwards.
Intolerance | Recoverability | Sensitivity | Evidence/Confidence | |
High | High | Moderate | High | |
Pomatoceros triqueter is attached permanently to rocks, boulders or shingle. Removal of substratum will remove calcareous tubes and animals contained in them. Intolerance is assessed as high. Recoverability is likely to be high (see additional information below). | ||||
High | High | Moderate | High | |
Smothering with a 5 cm layer of sediment would completely cover the tubes of Pomatoceros triqueter that usually lie flat against the surface of the rock. It is also likely that too much sediment on the surface of rocks or shells would prevent settlement of larvae and impair the long term survival of populations. Intolerance has been assessed to be high. Recoverability is likely to be high (see additional information below). | ||||
Low | High | Low | Low | |
Records show confusion as to whether Pomatoceros triqueter is tolerant of high suspended sediment levels. According to Bacescu (1972), sabellids are accustomed to turbidity and silt. Stubbings & Houghton (1964) found Pomatoceros triqueter in Chichester harbour, a muddy harbour, therefore agreeing with the previous statement. However, Pomatoceros triqueter has been noted to occur in areas where there is little or no silt present (Price et al., 1980) and according to Lewis (1957), Pomatoceros triqueter is highly susceptible to unfavourable conditions, always requiring stability and clean water. Moore (1937) and Nair (1962) agreed with this. However, Pomatoceros triqueter has been recorded in areas where suspended sediment levels can be high; demonstrating that it can tolerate high suspended sediment concentrations. A supply of suspended sediment will probably also be important to Pomatoceros triqueter because the species requires a supply of particulate matter for suspension feeding. At the benchmark level of an increase of 100mg/l for one month, the likely impact would be an increase in cleaning costs. Intolerance has been assessed as low. Recoverability is likely to be high. | ||||
Low | High | Low | Moderate | |
Pomatoceros triqueter has been noted to occur in areas where there is little or no silt present (Price et al., 1980). The species is an active suspension feeder and will probably not be highly intolerant of suspended sediment concentrations. As an energetic cost would probably be entailed to create currents to transport food particles, intolerance has been assessed to be low. On return to normal conditions, recoverability is likely to be high. | ||||
Intermediate | High | Low | Moderate | |
As Pomatoceros triqueter occurs in the subtidal region it will be tolerant to a certain amount of desiccation. The species probably survives by closing the operculum of the tube, however, the amount of time available for feeding and respiration will be reduced, and therefore the population's viability may be reduced. Some individuals are also likely to die. Intolerance has been assessed to be intermediate. Recoverability is likely to be high (see additional information below). | ||||
Intermediate | High | Low | Low | |
An increase in the emergence regime will increase the amount of time some individuals are exposed to air. At the benchmark level of an increase of one hour over the period of a year, those higher on shore are likely to die. Intolerance has been assessed to be intermediate. Recoverability is likely to be high (see additional information below). | ||||
Tolerant* | Not relevant | Not sensitive* | Not relevant | |
A decrease in the emergence regime may mean that more time can be spent feeding, but is unlikely to have any adverse effects. Therefore Pomatoceros triqueter is likely to tolerate a decrease in emergence, and may actually benefit. | ||||
Tolerant* | Not relevant | Not sensitive* | Not relevant | |
Pomatoceros triqueter has been noted to occur in areas with very sheltered to exposed water flow rates (Price et al., 1980). Wood (1988) observed Pomatoceros sp. in strong tidal streams and Hiscock (1983) found that in strong tidal streams or strong wave action where abrasion occurs, fast growing species such as Pomatoceros triqueter occur. Therefore, the species is probably tolerant of an increase in water flow rate, and the species may actually increase in abundance. | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
Pomatoceros triqueter has been noted to occur in areas with very sheltered to exposed water flow rates (Price et al., 1980). The species has been assessed to be tolerant. | ||||
Tolerant* | Not relevant | Not sensitive* | Not relevant | |
Maximum sea surface temperatures around the British Isles rarely exceed 20 °C (Hiscock, 1998) and, as Pomatoceros triqueter occurs as far south as the Mediterranean, it will therefore be subject to a wider range of temperatures than experienced in the British Isles. Further information also backs this up. Castric-Fey (1983) found that animals settling during spring showed the best growth rate and the best larval settlement occurred in the summer months. Pomatoceros triqueter has been assessed as tolerant* to an increase in temperature. | ||||
Intermediate | High | Low | Moderate | |
Minimum surface sea water temperatures rarely fall below 5 °C around the British Isles (Hiscock, 1998). Below a temperature of 7°C Pomatoceros triqueter is unable to build calcareous tubes (Thomas, 1940). This means that, although adults may be able to survive a decrease in temperature, larvae would not be able to attach to the substratum. Intolerance has been assessed to be intermediate. Recoverability is likely to be high (see additional information below). | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
According to Bacescu (1972), sabellids are accustomed to turbidity and silt. Pomatoceros triqueter has also recently been recorded by De Kluijver (1993) from Scotland in the aphotic zone, indicating that the species would not be sensitive to an increase in turbidity. | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
According to Bacescu (1972), sabellids are accustomed to turbidity and silt. According to Lewis (1957), Pomatoceros triqueter is highly susceptible to unfavourable conditions, always requiring stability and clean water. Moore (1937) and Nair (1962) agreed with this. Therefore, Pomatoceros triqueter is unlikely to be sensitive to a decrease in turbidity. | ||||
Low | High | Low | Moderate | |
Pomatoceros triqueter has been noted to occur in areas with variable wave action; extremely sheltered to very exposed (Price et al., 1980). The hard calcareous tube is resistant to abrasion from sand, gravel and boulders (Wood, 1988; Hiscock, 1983) that are mobilised by wave action. With an increase in wave exposure over a period of a year the viability of the population may be reduced due to a reduction in feeding and larval settlement. Therefore intolerance of Pomatoceros triqueter to an increase in wave exposure is likely to be low. On return to normal conditions, recoverability is likely to be high. | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
Pomatoceros triqueter has been noted to occur in areas with variable wave action; extremely sheltered to very exposed (Price et al., 1980). As the species can tolerate very low wave exposure, it is therefore probably tolerant of a decrease in wave exposure. | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
Polychaetes may be able to detect vibration, and withdraw into their tube. However, at the benchmark level the species is unlikely to be sensitive to noise. | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
Shadows detected by the photoreceptive surface of serpulid polychaetes may result in withdrawal of the worm back into its tube (Kinne, 1970). However, at the benchmark level the species is unlikely to be sensitive to visual presence. | ||||
Intermediate | High | Low | Not relevant | |
Pomatoceros triqueter has a hard calcareous tube that is resistant to sand and gravel abrasion (Wood, 1988). Hiscock (1983) noted that a community, under conditions of scour and abrasion from stones and boulders moved by storms, developed into a community consisting of fast growing species such as Pomatoceros triqueter. Off Chesil Bank, the epifaunal community dominated by Pomatoceros triqueter, Balanus crenatus and Electra pilosa, decreased in cover in October, was scoured away in winter storms, and was recolonized in May to June (Warner, 1985). Warner (1985) reported that the community did not contain any persistent individuals, being dominated by rapidly colonizing organisms. But, while larval recruitment was patchy and varied between the years studied, recruitment was sufficiently predictable to result in a dynamic stability and a similar community was present in 1979, 1980, and 1983. Scour due to winter storms is probably greater than the benchmark level. Scour and abrasion will probably remove a proportion of the population, suggesting an intolerance of intermediate. However, it demonstrates rapid growth and recruitment so that it is not considered to be sensitive. The abundance of Pomatoceros triqueter may increase due to decreased competition from other species. | ||||
Low | High | Low | High | |
If tubes containing the worm are removed, the tubes will not be able to be reattached to the substratum surface. However, Thomas (1940) found that if Pomatoceros triqueter is removed from its tube, it will start to make a new one in a few hours. Therefore, it is likely that the worm will be able to leave the old tube to start constructing another. This would probably involve an added energetic cost, therefore population viability may be affected. Intolerance has been assessed to be low. Recoverability is likely to be high. |
Intolerance | Recoverability | Sensitivity | Evidence/Confidence | |
No information | Not relevant | No information | Not relevant | |
There is insufficient information to assess the intolerance of Pomatoceros triqueter to synthetic chemicals. | ||||
No information | Not relevant | No information | Not relevant | |
Bryan (1984) suggested that, on evidence available for several species, that polychaetes are fairly resistant to heavy metals. However, there is insufficient information available to assess intolerance of Pomatoceros triqueter to heavy metal contamination. | ||||
No information | Not relevant | No information | Not relevant | |
Large numbers of dead polychaetes and other fauna were washed up at Rulosquet marsh near Isle de Grand following the Amoco Cadiz oil spill in 1978 (Cross et al., 1978). However, no information was found relating to Pomatoceros triqueter in particular. Therefore, insufficient information was available to assess the species intolerance. | ||||
No information | Not relevant | No information | Not relevant | |
There is insufficient information to assess the intolerance of Pomatoceros triqueter to radionuclides. | ||||
No information | Not relevant | No information | Not relevant | |
There is insufficient information to assess the intolerance of Pomatoceros triqueter to nutrient levels. | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
Pomatoceros triqueter occurs in fully saline waters and is probably relatively tolerant of an increase in salinity. | ||||
High | High | Moderate | Low | |
Pomatoceros triqueter occurs in fully saline coastal waters and has not been recorded from brackish or estuarine waters. Therefore, it is likely that the species will be very intolerant of a decrease in salinity. However, Dixon (1985) views the species as able to withstand significant reductions in salinity. The degree of reduction in salinity and time that the species could tolerate those levels were not recorded. Therefore, there is insufficient information available to assess the intolerance of Pomatoceros triqueter to a reduction in salinity. | ||||
No information | Not relevant | No information | Not relevant | |
Cole et al. (1999) suggest possible adverse effects on marine species below 4 mg/l and probable adverse effects below 2 mg/l. However, no information was found relating to intolerance of Pomatoceros triqueter to oxygen levels. Insufficient information was available to assess intolerance of the species at the benchmark level of 2 mg/l for a week. |
Intolerance | Recoverability | Sensitivity | Evidence/Confidence | |
No information | Not relevant | No information | Not relevant | |
Thomas (1940) recorded parasites of Pomatoceros triqueter. Trichodina pediculus (a ciliate) was observed in fair numbers moving over the branchial crown. However, this is a commensal, not a parasite. Parasites found in the worm include gregarines & ciliated protozoa and parasites that had the appearance of sporozoan cysts. However, no information was found about the effects of microbial pathogens on Pomatoceros triqueter. | ||||
Tolerant | Not relevant | Not sensitive | Not relevant | |
Although several species of serpulid polychaetes have been introduced into British waters none are reported to compete with Pomatoceros triqueter (Eno et al., 1997). | ||||
Not relevant | Not relevant | Not relevant | Not relevant | |
No extraction of Pomatoceros triqueter is known to occur. | ||||
Not relevant | Not relevant | Not relevant | Not relevant | |
No extraction of other species is likely to have any effect on Pomatoceros triqueter. |
- no data -
National (GB) importance | - | Global red list (IUCN) category | - |
Native | - | ||
Origin | - | Date Arrived | - |
Bacescu, M.C., 1972. Substratum: Animals. In: Marine Ecology: A Comprehensive Treatise on Life in Oceans and Coastal Waters. Volume 1 Environmental Factors Part 3. (ed. O. Kinne ). Chichester: John Wiley & Sons.
Bradshaw, C., Veale, L.O., Hill, A.S. & Brand, A.R., 2002. The role of scallop-dredge disturbance in long-term changes in Irish Sea benthic communities: a re-analysis of an historical dataset. Journal of Sea Research, 47, 161-184. DOI https://doi.org/10.1016/S1385-1101(02)00096-5
Bryan, G.W., 1984. Pollution due to heavy metals and their compounds. In Marine Ecology: A Comprehensive, Integrated Treatise on Life in the Oceans and Coastal Waters, vol. 5. Ocean Management, part 3, (ed. O. Kinne), pp.1289-1431. New York: John Wiley & Sons.
Burnell, G.M., Barnett, M., O'Caroll, T. & Roantree, V., 1991. Scallop spat collection and on-growing trials in south-west Ireland. Actes de Colloques. Institutes Francais de Recherche pour l'Exploitation de la Mer (IFREMER), 17, 139-144.
Castric-Fey, A., 1983. Recruitment, growth and longevity of Pomatoceros triqueter and Pomatoceros lamarckii (Polychaeta, Serpulidae) on experimental panels in the Concarneau area, South Brittany. Annales de l'Institut Oceanographique, Paris, 59, 69-91.
Cole, S., Codling, I.D., Parr, W. & Zabel, T., 1999. Guidelines for managing water quality impacts within UK European Marine sites. Natura 2000 report prepared for the UK Marine SACs Project. 441 pp., Swindon: Water Research Council on behalf of EN, SNH, CCW, JNCC, SAMS and EHS. [UK Marine SACs Project.]. Available from: http://ukmpa.marinebiodiversity.org/uk_sacs/pdfs/water_quality.pdf
Cotter, E., O’Riordan, R.M. & Myers, A.A., 2003. Recruitment patterns of serpulids (Annelida: Polychaeta) in Bantry Bay, Ireland. Journal of the Marine Biological Association of the United Kingdom, 83 (1), 41- 48. DOI https://doi.org/10.1017/S0025315403006787h
Crisp, D.J., 1965. The ecology of marine fouling. In: Ecology and the Industrial Society, 5th Symposium of the British Ecological Society, 99-117 (ed. G.T. Goodman, R.W. Edwards & J.M. Lambert).
Cross, F.A., Davis, W.P., Hoss, D.E. & Wolfe, D.A., 1978. Biological Observations, Part 5. In The Amoco Cadiz Oil Spill - a preliminary scientific report (ed. W.N.Ness). NOAA/EPA Special Report, US Department of Commerce and US Environmental Protection Agency, Washington.
De Kluijver, M.J., 1993. Sublittoral hard-substratum communities off Orkney and St Abbs (Scotland). Journal of the Marine Biological Association of the United Kingdom, 73 (4), 733-754.
Dixon, D.R., 1985. Cytogenetic procedures. Pomatoceros triqueter: A test system for environmental mutagenesis. In The effects of stress and pollution in marine animals.
Dons, C., 1927. Om Vest og voskmåte hos Pomatoceros triqueter. Nyt Magazin for Naturvidenskaberne, LXV, 111-126.
Ekaratne, K., Burfitt, A.H., Flowerdew, M.W. & Crisp, D.J., 1982. Separation of the two Atlantic species of Pomatoceros, P. lamarckii and P. triqueter (Annelida: Serpulidae) by means of biochemical genetics. Marine Biology, 71, 257-264.
Eno, N.C., Clark, R.A. & Sanderson, W.G. (ed.) 1997. Non-native marine species in British waters: a review and directory. Peterborough: Joint Nature Conservation Committee.
Fish, J.D. & Fish, S., 1996. A student's guide to the seashore. Cambridge: Cambridge University Press.
Hayward, P., Nelson-Smith, T. & Shields, C. 1996. Collins pocket guide. Sea shore of Britain and northern Europe. London: HarperCollins.
Hayward, P.J. & Ryland, J.S. (ed.) 1995b. Handbook of the marine fauna of North-West Europe. Oxford: Oxford University Press.
Hiscock, K., 1983. Water movement. In Sublittoral ecology. The ecology of shallow sublittoral benthos (ed. R. Earll & D.G. Erwin), pp. 58-96. Oxford: Clarendon Press.
Hiscock, K., ed. 1998. Marine Nature Conservation Review. Benthic marine ecosystems of Great Britain and the north-east Atlantic. Peterborough, Joint Nature Conservation Committee.
Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]
Kinne, O. (ed.), 1970. Marine Ecology: A Comprehensive Treatise on Life in Oceans and Coastal Waters. Vol. 1 Environmental Factors Part 1. Chichester: John Wiley & Sons
Lewis, J.R., 1957. Intertidal communities of the northern and western coasts of Scotland. Transactions of the Royal Society of Edinburgh, 63, 185-220.
Moore, H.B., 1937. Marine Fauna of the Isle of Man. Liverpool University Press.
Nair, N.B., 1962. Ecology of marine fouling and wood-boring organisms of western Norway. Sarsia, 8, 1-88.
OECD (ed.), 1967. Catalogue of main marine fouling organisms. Vol. 3: Serpulids. Paris: Organisation for Economic Co-operation and Development.
Price, J.H., Irvine, D.E. & Farnham, W.F., 1980. The shore environment. Volume 2: Ecosystems. London Academic Press.
Rubin, J.A., 1985. Mortality and avoidance of competitive overgrowth in encrusting Bryozoa. Marine Ecology Progress Series, 23, 291-299.
Segrove, F., 1941. The development of the serpulid Pomatoceros triqueta L. Quarterly Journal of Microscopical Science, 82, 467-540.
Stubbings, H.G. & Houghton, D.R., 1964. The ecology of Chichester Harbour, south England, with special reference to some fouling species. Internationale Revue der Gesamten Hydrobiologie, 49, 233-279.
Thomas, J.G., 1940. Pomatoceros, Sabella and Amphitrite. LMBC Memoirs on typical British marine plants and animals no.33. University Press of Liverpool. Liverpool
Wood, E. (ed.), 1988. Sea Life of Britain and Ireland. Marine Conservation Society. IMMEL Publishing, London
Bristol Regional Environmental Records Centre, 2017. BRERC species records recorded over 15 years ago. Occurrence dataset: https://doi.org/10.15468/h1ln5p accessed via GBIF.org on 2018-09-25.
Centre for Environmental Data and Recording, 2018. IBIS Project Data. Occurrence dataset: https://www.nmni.com/CEDaR/CEDaR-Centre-for-Environmental-Data-and-Recording.aspx accessed via NBNAtlas.org on 2018-09-25.
Centre for Environmental Data and Recording, 2018. Ulster Museum Marine Surveys of Northern Ireland Coastal Waters. Occurrence dataset https://www.nmni.com/CEDaR/CEDaR-Centre-for-Environmental-Data-and-Recording.aspx accessed via NBNAtlas.org on 2018-09-25.
Cofnod – North Wales Environmental Information Service, 2018. Miscellaneous records held on the Cofnod database. Occurrence dataset: https://doi.org/10.15468/hcgqsi accessed via GBIF.org on 2018-09-25.
Environmental Records Information Centre North East, 2018. ERIC NE Combined dataset to 2017. Occurrence dataset: http://www.ericnortheast.org.ukl accessed via NBNAtlas.org on 2018-09-38
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Fife Nature Records Centre, 2018. St Andrews BioBlitz 2015. Occurrence dataset: https://doi.org/10.15468/xtrbvy accessed via GBIF.org on 2018-09-27.
Fife Nature Records Centre, 2018. St Andrews BioBlitz 2016. Occurrence dataset: https://doi.org/10.15468/146yiz accessed via GBIF.org on 2018-09-27.
Kent Wildlife Trust, 2018. Biological survey of the intertidal chalk reefs between Folkestone Warren and Kingsdown, Kent 2009-2011. Occurrence dataset: https://www.kentwildlifetrust.org.uk/ accessed via NBNAtlas.org on 2018-10-01.
Kent Wildlife Trust, 2018. Kent Wildlife Trust Shoresearch Intertidal Survey 2004 onwards. Occurrence dataset: https://www.kentwildlifetrust.org.uk/ accessed via NBNAtlas.org on 2018-10-01.
Lancashire Environment Record Network, 2018. LERN Records. Occurrence dataset: https://doi.org/10.15468/esxc9a accessed via GBIF.org on 2018-10-01.
Manx Biological Recording Partnership, 2018. Isle of Man historical wildlife records 1990 to 1994. Occurrence dataset:https://doi.org/10.15468/aru16v accessed via GBIF.org on 2018-10-01.
Merseyside BioBank., 2018. Merseyside BioBank Active Naturalists (unverified). Occurrence dataset: https://doi.org/10.15468/smzyqf accessed via GBIF.org on 2018-10-01.
NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
North East Scotland Biological Records Centre, 2017. NE Scotland other invertebrate records 1800-2010. Occurrence dataset: https://doi.org/10.15468/ifjfxz accessed via GBIF.org on 2018-10-01.
OBIS (Ocean Biodiversity Information System), 2023. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2023-03-30
South East Wales Biodiversity Records Centre, 2018. SEWBReC Worms (South East Wales). Occurrence dataset: https://doi.org/10.15468/5vh0w8 accessed via GBIF.org on 2018-10-02.
South East Wales Biodiversity Records Centre, 2018. Dr Mary Gillham Archive Project. Occurance dataset: http://www.sewbrec.org.uk/ accessed via NBNAtlas.org on 2018-10-02
Yorkshire Wildlife Trust, 2018. Yorkshire Wildlife Trust Shoresearch. Occurrence dataset: https://doi.org/10.15468/1nw3ch accessed via GBIF.org on 2018-10-02.
This review can be cited as:
Last Updated: 26/10/2005