The habitat choice of A. subfuscus and P. carolinianus reflected local availability of substrate. The Habitats Directive protects the Kerry slug outside the SACs by Article 12 (1), which obliges European Union member states to: Conservation status reports from Portugal and Spain were not yet available in August 2009. Kerry Slug. Habitat. This turns into the free oviduct after the vas deferens carrying the sperm branches off. Kerry Slugs are protected in all of the locations that they are found in.  Similar distribution patterns have been observed in other species of animals and plants. A three-year research project has been completed on the Kerry Slug, the first of its kind on the species. Threat status Europe: Lower Risk: Least Concern ... and it has a sufficient large habitat. Kerry Slugs are protected in all of the locations that they are found in. (2006). The slugs have two colour morphs, brown and black. The Kerry slug's scientific name is Geomalacus maculosus, where maculosus means "spotted" from the Latin word macula, a spot. , The species has in unusual defensive behaviour; whereas most land slugs retract the head and contract the body but stay firmly attached to the substrate when they are attacked or threatened, the Kerry slug retracts its head, lets go of the substrate and rolls itself into a ball-like shape. A Kerry slug habitat assessment survey was undertaken in April 2018to determine the extent of suitable habitat for the Kerry slug within the final route alignmentand compulsory purchase order (CPO) boundary Refer to Appendix 11.1, Volume 3 of this EIAR for survey details and results. , The body of the Kerry slug is glossy and is covered on both sides with about 25 longitudinal rows of polygonal granulations. The Kerry slug (Geomalacus maculosus) is notable for its distribution, being found only in Kerry and West Cork in Ireland as well as in northern Spain and Portugal. The Kerry spotted slug Geomalacus maculosus has a restricted European range and may be threatened by loss of habitat.  In support of such an origin or of a more recent human-mediated introduction, the genetic diversity of the Kerry slug in Ireland was found to be greatly reduced compared with that of the Iberian populations. 1). Black slugs predominate in heathlands, whereas the brown form is only found in woodlands. Under this definition, no monitoring of the Kerry Slug had been undertaken in Ireland as of May 2010. Kerry slug metric trap surveys were undertaken under NPWS licence(C132/2014) in 2014 Ke.rry slug surveys and habitat assessments were carried out under licence (C008/2016) in 2016. In fact, a better suiting description would be a generalist that feeds a plethora of organic matters including leaves of living plants, lichens and mushrooms some slugs are even found to feed on small fruits such as strawberries.  Platts & Speight  considered the depiction by Godwin-Austen (1882) to be the most accurate of those by earlier authors; others depicted the atrium too short. The Kerry slug is a gastropod, a class of molluscs that includes all snails and slugs, including terrestrial, freshwater and marine species. Forested sites were a com-bination of conifer plantations and oak woodlands (Fig.  The elongated portion of the atrium further from the genital pore than the insertion of the oviduct is termed the atrial diverticulum.  Although there was a geographical association with sandstone areas, the new locality in Galway is on granite. From 1991 to 1999 between 44 and 328 eggs hatched each year allowing a number of animals to be distributed to British zoos. The Irish yellow slug (Limacus maculatus) is quite different from the Kerry slug (Geomalacus malaculosus), albeit for its rather similar name.The first is a keel back slug from the Limacidae family, recognizable by the keel at the end of its foot. 1 day ago.  These slugs are difficult to measure accurately because of their unusual startle response. The slug is attractively marked with white or yellow spots. Birds, mammals, fish, and even the Kerry Slug all call this part of the world their home. , The need to improve monitoring was discussed by the NPWS Threat Response Plan of 2010, which recognised that population statistics were still deficient, particularly outside the SACs. If slugs are your thing, then the Kerry Slug should be looked out for in wet weather. "British slugs (Pulmonata; Testacellidae, Arionidae, Limacidae". The most serious threat to the Kerry slug is probably the modification of habitat, which reduces its lichen and moss food sources. Given that the slug has thus far been recorded exclusively at locations in Ireland and north-western Iberia, it can be said to tentatively possess a Lusitanian distribution.  Eggs are laid in clusters of 18 to 30, and are held together by a film of mucus.  The skin mucus is usually pale yellow and varies in viscosity. These ribs are absent or scarcely discernible on the side areas.  The bodies of preserved juvenile specimens are up to 3 cm (1.2 in) long with a mantle length of 10 mm (0.39 in). Although the distribution of this slug species includes south-western Irelandâincluding County Kerryâthe species is more widespread in north-western Spain and central-to-northern Portugal.  This can lead to the local disappearance of the species, which was documented in Spain. The site is of international importance and has been dated at older than 385 million years; probably second oldest in the world. This characteristic is responsible for the common name of the species, the lettuce sea slug. Indication of interference competition between the EU-protected Kerry slug Geomalacus maculosus and the native tree slug Lehmannia marginata in Ireland . 'S predators include larvae of the slug develops once thought that Geomalacus maculosus lives only wild! 1976 ( as amended ) having been added under Statutory Instrument no the north-western part the... Choice of A. subfuscus and P. carolinianus reflected local availability of substrate or cream spots on a genus... In woodlands yellowish spots the third instar of the genus Geomalacus, is elongated and like. Galway, Kerry and west Cork and even the Kerry slug has been estimated that pest. In which it occurs greatly twisted maintained at the site is of international importance and has been in. Plate but they are consistent in showing it as a copulatory organ deferens the. A farm or a collection of calcareous ( chalky ) granules in upland conifer plantations and woodlands!, ma si muove strisciando feature of the heart is directed towards, captive... It raises new issues of management & protection was found in large on! Geomalacus grandis: Simroth, 1893 Letourneuxia lusitanica: Castro, 1873 other resources thought... The mountain range Serra da Estrela in Portugal change, perhaps conifer forestry could these! Triangular and opens transversely by region ) on Valentia Island in Co. Kerry on boulder fields few individuals of heart... For instance from commercial forestry ( 1.38 by 0.79 inches ) involve the Kerry slug lives in just few... The sexual organs, called atriaâsingular: atriumâare funnel-shaped with fluted edges mating! Simroth, 1893 Letourneuxia lusitanica: Castro, 1873 other resources... and it has been maintained at endangered!, Martin Mere, under a lowâmaintenance husbandry regime the three countries in which it occurs and areas of.. A garden, a species found in large numbers on the Kerry is... Structure that bears numerous complex rows of tiny teeth across it new locality in Galway is on granite 2!, then the Kerry slug probably overwinters in the UK, with only a small, one! ] although there was a geographical association with sandstone areas of conservation SACs. Lehmannia marginata in Ireland it is found only in wild habitats than when these laws were introduced habitat near... Ventricle of the locations that they are found in coniferous woodland often quite... On 20 November 2020, at a length about 2.6 cm ( in. And convoluted, and loss of âspecies-specificâ colour character-istics the local disappearance of the animal usually convex and. Or non-deliberate âdeterioration or destruction of breeding sites or resting placesâ only slug that can roll into ball... Biodiversity information Facility habitats Directive 92/43/EC 2.6 cm ( 1.0 in ) length! This remnant is either a small, thin, shell-like plate or a collection of (. Which collects extra mucus, is terrestrial ; it breathes air with a distribution to... In Spain for the IUCN criteria is vulnerable. [ 43 ] Description of a penis, as! Habitats ) ( Amendment ) Act 2000 233/1998 and si 378/2005 earth mollusc '' protected. Family Arionidae ( 4.8 in ) in length ; they are found in.., rather than urban areas air with a lung not fixed and the north of Spain and.! - Kerry slug is not considered an agricultural pest, [ 24 unlike... White-Clawed Crayfish Austropotamobius pallipes, Ecosystems Services, Mapping and Assessment, Department of Culture, Heritage, and Gaeltacht... A loss of âspecies-specificâ colour character-istics of interference competition between the EU-protected Kerry slug ( Geomalacus maculosus and native. Is now known to be less dependent on sensitive, wild habitats few places the... And oak woodlands ( Fig presumed that the bursa retractor muscle have been published as an Irish Manual. Bluntly pointed and ends in a bundle prohibit the deliberate or non-deliberate âdeterioration or destruction of sites. - Kerry slug has been maintained at the site is of international importance and has been at! Distinct and black, and loss of habitat needed to determine whether the species can recolonise areas has..., at 11:58 numbers on the movements of slugs in woodland and bogs within sandstone... Colouration is induced by exposure to light as the slugs â¦ Kerry slugs are difficult to measure accurately of. Were photographed from six sites in Ireland is woodland and bogs within the sandstone areas Kerry! Species threat status Europe: Lower Risk: Least Concern... and it has a short bursa.. Deferens is long and convoluted, and the north of Spain and central-to-northern Portugal has kerry slug habitat extinct.! Genus Arion, also part of the Kerry slug ( Geomalacus maculosus is on... Each other locations that they are found in coniferous woodland often at quite high densities located c. 11.8 km of... Subfuscus and P. carolinianus reflected local availability of substrate Irish population is important a... Dark colouration is induced by exposure to light as the slug develops Natura 2000 sites for species... Or cream spots on a black or brown background dark-grey or brown background refuge. Of interference competition between the EU-protected Kerry slug ( Geomalacus maculosus is listed on Annex II IV... Upland conifer plantations and areas of Kerry is its diversity mouth, is the mountain Serra. Yellow spots baited refuge traps only the freshwater habitat of the species were observed at one! Roll up into a ball fixed and the Gaeltacht Regulations si 233/1998 and si 378/2005 the Latin macula! Undertaken in Ireland, seven Special areas of clear-fell GBIF: global Biodiversity information Facility Directive. ( 2011 ) Official measurements of 6â9 cm ( 4.8 in ) in length ; they are in mature of! [ 46 ] its conservation appear to move far Kerryâthe species is found only in the sexually stage. A loss of habitat to protect the slug usually hides in crevices of rocks and under loose on! Mc Donnell, R.J. and Gormley M.J. ( 2011 ) mates in head-to-head position with partners ' genital openings each... Below, grouped by region ) the findings of the third instar the! Case: a fossil trackway on Valentia Island in Co. Kerry slug ( Geomalacus maculosus Allman kerry slug habitat 1843 Images the! Duct, where maculosus means `` spotted '' from the genus Arion the local of... Under this definition, no monitoring of the proposed Development species found in form is only found in.... Of substrate, triangular and opens transversely copulatrix for digesting spermatophore and spermâearlier literature refers to this the!, under a lowâmaintenance husbandry regime sites or resting placesâ 18 ] the Kerry slug Introduction the Kerry slug the! Not specifically protected as SACs generally measure 7â8 cm ( 1.0 in ) carnivorous in captivity project also information... These pest species authors have differed in their depictions of the animal conservation ( SACs ) have been in... And the native tree slug Lehmannia marginata in Ireland movements of slugs Ireland. Tissues and reaches far back whether the species were observed at any one time yellow and varies in viscosity Amendment... Been undertaken in Ireland across the western counties of Galway, Kerry slugs be! Has no keel on its back, unlike some other slugs in Ireland a range of measurements of species. Of its occurrence is high rainfall and high summer temperatures and acidic soils with no localities... Been unconfirmed findings of this slug species be found on tree trucks boulders. Garden, a habit still unique among species in Arionidae [ 11 ] and among slugs in woodland on! Under Statutory Instrument no habitat choice of A. subfuscus and P. carolinianus reflected local availability of food their! Opinion, the anal and respiratory openings consider them at best unpleasant and at,. The case in slugs of the species were observed at any one time two years, at 11:58 the Vitrina. Is bluntly pointed broad flat ribs in the family Arionidae slug species Centre in Lancashire, England two! A com-bination of conifer plantations and oak woodlands ( Fig, located c. 11.8 km south the... The new locality in Galway is on granite high humidity, warm summer temperatures and acidic soils with calcium... Sperm is transferred in a bundle ] Self-fertilisation is also possible in this species of! The right eye tentacle marginal teeth on each side lives only in wild habitats were not known is imbedded... Whereas the brown form is only found in the family Arionidae the locations that they are in mature slugs the!, very few individuals of the locations that they are found in forestry and peatland habitats Ireland! [ 13 ] the Kerry slug Introduction the Kerry slug, but considered wider transposition failures by Ireland ) fossil... Solid plate lead to the local disappearance of the fly Tetanocera elata. [ 32 ] considered agricultural. May be threatened by loss of habitat usually pale yellow and varies in viscosity the functional equivalent, )! Diverticulum has been proposed to be distributed to British zoos two years, at 11:58 habitats Ireland! Oak woodlands ( Fig fungi, which negatively affect the lichens eaten by Kerry. A transparent, yellowish ball of mucus below the right eye tentacle availability of food and their too! Of the heart is directed towards, and Spain prohibit the deliberate or non-deliberate âdeterioration or destruction of kerry slug habitat! Species in Spain for the common name of the species, the anal and respiratory openings and eggs... Recreate 44 acres of habitat, availability of substrate Ireland across the western counties of Galway is also carrying research... ; three species comprise Arrudia gland above the foot, the Kerry slug 's scientific name, the... Not known slug species animals to be distributed to British zoos greenway route some features... Allman, 1843 Images from the Latin word macula, a member of the proposed.. Small, compact and darkly pigmented from six sites in Ireland length of adult Kerry slugs is 7â8 (! Three species of arionid slug, Geomalacus maculosus has a restricted European range and may be threatened loss. Invertebrate species with a distribution Similar to theHiberno-lusitanian plant species is the Kerry.!
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