Channeled apple snails (CAS) are large, freshwater snails that grow to over 3 inches in length. 10, Cowie RH, 1997. Active, short term dispersal does not necessarily translate into long term, long distance dispersal. 2017). The emergence of angiostrongyliasis in the People's Republic of China: the interplay between invasive snails, climate change and transmission dynamics. Fertilization occurs internally, followed by oviparous development. Hayes, K.A., R.C. The entire genome of P. maculata has not been sequenced or examined comprehensively. However, efforts have been made to facilitate consumption of P. maculata by the kites, for example managers have installed perches close to the water body where the birds can extract the snails rather than spending energy taking them back to a more distant location (Pias et al., 2012). New Jersey, USA: TFH Publications, Inc, 121 pp, Peterson RT, 1980. Armand Bayou Nature Center, Houston, Texas. Puerto Rico Department of Natural and Environmental Resources. Pages 145-192 in Barker, G.M., ed. As one example, in Florida, the St. John’s Water Management District (SJFMD) in cooperation with the Florida Fish and Wildlife Conservation Commission (FWCC) applied copper sulfate to Newnans’ Lake in 2007. 2019. A hemipteran and two orthopterans also eat the eggs of P. canaliculata (Yusa, 2006), and therefore also perhaps of P. maculata. [2020]. The snails’ herbivory is the main factor affecting habitats and the increasing spread of P. maculata populations, such as their invasion of the Florida Everglades, causes concern. Biological Name. In: Global advances in ecology and management of golden apple snails [ed. They all identified the snails as P. canaliculata and for the studies in Laos there is no evidence that this was in error, and in fact P. maculata has not been recorded from Laos. The shell is yellowish brown or yellow–green to greenish brown or dark chestnut, sometimes with reddish to green–brown or dark brown spiral bands of variable number and thickness. (2018) suggests that the development of all-male prawn populations of Macrobrachium rosenbergii has the potential as a biocontrol agent over hatchling and adult apple snails (Pomacea spp.). They tend to have more prominent shell spires, though this character is variable in all three species, and the sutures between their whorls are not deeply channellized. In: Molluscs as crop pests. However, there is a risk of further spread of the snails, and consequent negative impacts, associated with such efforts. However, eggs and small juveniles of P. canaliculata (and perhaps therefore of P. maculata) are eaten by fire ants, Solenopsis geminata, in Asia, and these have been suggested as possible biocontrol agents (Way et al., 1998; Yusa, 2001), though introduction of such a major invasive pest would probably be inappropriate. EPPO Global database. (2012), the common name ‘island apple snail’ became inappropriate. Names and dates are hyperlinked to their relevant specimen records. (2007), and given the common name ‘island apple snail’ (‘ insularum’ in Latin means ‘of islands’) by various agencies. Normal coloration typically includes bands of brown, black, and yellowish-tan, and color patterns are extremely variable. 15 (9), 2039-2048. DOI:10.1007/s10530-013-0431-1, Matsukura K, Okuda M, Kubota K, Wada T, 2008. It will feed on macroalgae, submerged plants or freely floating macrophytes with little structural defense (e.g. Accessed [12/17/2020]. (2017) found that a predator of. In the USA, use of chelated copper (e.g. Journal of Conchology 24: 421-432. (2012) recognised the species name Pomacea maculata as the senior synonym of a number of other Pomacea species, including P. insularum, the name (d) grey color eventually yields to white when the clutch will soon hatch. Further research especially on its genetics, reproductive biology and physiological tolerances are required. Nonindigenous freshwater invertebrates. On a small scale, the effects may not provoke action, but populations with higher densities would magnify this pattern and increase the ecological impact. Pomacea maculata; newly collected, medium-sized specimens, laying pink egg clutches. History and status of applesnail (Pomacea spp.) In a study of P. canaliculata (the identification is probably correct), Laos Carlsson et al. it is a human commensal), Highly likely to be transported internationally accidentally, Highly likely to be transported internationally deliberately, Highly likely to be transported internationally illegally, Difficult to identify/detect as a commodity contaminant, Difficult to identify/detect in the field, Meat/fat/offal/blood/bone (whole, cut, fresh, frozen, canned, cured, processed or smoked). (2008), the difficulty of distinguishing P. canaliculata from P. maculata meant that not only were their true ranges in South America not understood but also that the correct identities of ampullariids in Asia and other locations to which they have been introduced were not known. Pagka karon wala pay siak nga nalista ubos niini niya. Texas, USA: University of Texas at Arlington, 245 pp. Applesnails are larger than most freshwater snails and can be separated from other freshwater species by their oval shell which has the umbilicus (the axially aligned, hollow, cone-shaped space within the whorls of a coiled mollusc shell) of the shell perforated or broadly open. I had a golden apple snail for about 6 or 7 months I believe. The activity patterns of P. maculata are probably similar to those of P. canaliculata but no studies have addressed these aspects of behaviour in P. maculata. Acta Oecologica,, Horn KC, Johnson SD, Boles KM, Moore A, Siemann E, Gabler CA, 2008. The number of eggs in a clutch is greater in P. maculata but the eggs are smaller; hence hatchlings of P. canaliculata are roughly twice as big as those of P. maculata (Hayes et al., 2012). Similarly, as an invasive species, P. maculata and other congeneric invasive species (primarily P. canaliculata but also P. diffusa) offer opportunities for addressing interesting questions of rapid evolution and adaptation (e.g. American Malacological Bulletin, 27:47-58, Hayes KA, Cowie RH, Thiengo SC, 2009. The majority of references identify Argentina as the original source of the introduced Pomacea (e.g. In contrast, ephemeral agricultural habitats contained extremely high densities (>130 snails per square meter), and furthermore, snail size and numbers varied through time, both peaking in autumn. With the global need to find alternate protein sources, the culinary industries of various countries might explore further the use of apple snails as a local delicacy or ethnic cuisine. Possibly previously confused with P. canaliculata, which is also in South Korea, Introduced from elsewhere in east or South-East Asia. Detailed coverage of invasive species threatening livelihoods and the environment worldwide. Adult P. maculata can reach up to 165 mm in shell height and weigh over 200g (Kyle et al., 2009; Hayes et al., 2012). Snails consumed less than 10 % of Spartina alterniflora, Thalia dealbata and Typha latifolia. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Reported : Island Applesnail. Feeding rates of an introduced freshwater gastropod Pomacea insularum on native and nonindigenous aquatic plants in Florida. Common name; العربية: ... Pomacea maculata‎ (18 F) Pomacea malleata‎ (2 F) N Pomacea nubila‎ (3 F) O Pomacea olivacea‎ (1 F) P Pomacea paludosa‎ (1 P, 14 F) Pomacea phorphyrostoma‎ (1 F) Pomacea poeyana‎ (3 F) Pomacea cornucopia‎ (2 F) (2009b) and showed that P. maculata and P. canaliculata are not particularly closely related and are not sister taxa. Ampullariidae, common name the apple snails, is a family of large freshwater snails, aquatic gastropod mollusks with a gill and an operculum. © Copyright 2020 CAB International. Boland et al. Without any requirement or practice of inspection, small P. maculata may be mistaken for P. diffusa and unintentionally sold to the public. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information. Byers et al. (2012) revised the taxonomy of P. maculata and P. canaliculata, redescribing both species and clearly distinguishing them morphologically. The thin fragile shells can reach up to 6 in. Several sources list P. maculata as a pest species. London, UK: Earthscan, 207-217, Cowie RH, Hayes KA, Thiengo SC, 2006. Apple snails (Ampullariidae) as agricultural pests: their biology, impacts and management. For most countries in which Hayes et al. The eggs are spherical, calcareous, deep pink-red to lighter orange-pink, becoming paler as the calcium hardens, and eventually whitish pink just before hatching. Florida FDOACS. Golden apple snail: its occurrence and importance in Suriname's rice ecosystem. Applied Entomology and Zoology. Cattau, C.E., R.J. Fletcher, Jr., R.T. Kimball, C.W. A distinct yet small dark brown line extends vertically from the top to the mid-point of the operculum. daily) to remove snails. P. diffusa is the most common ampullariid in the aquarium pet trade (Perera and Walls, 1996). Yeung et al. The two species differ most clearly genetically, having no shared haplotypes and a mean genetic distance of 0.135 at cytochrome c oxidase subunit I (COI) (Hayes et al., 2012). (2010) noted that P. maculata in Texas laid a disproportional number of clutches on riparian vegetation, specifically taro (Colocasia esculenta). New type material — neotype ( Hayes et al . Zoological Journal of the Linnean Society 166(4):723-753. The first whorl of one-day-old hatchlings is ~0.8 mm wide and the hatchling shell is 1.2 mm in height; the semi-translucent operculum is ~1.1 mm in width (Barnes et al., 2008; Horn et al., 2008; Hayes et al., 2012). Cutrine, Komeen, KTK-Tea, Captain) or copper sulfate represents the most widely used method of chemical control for P. maculata. Positive interactions of nonindigenous species: invasional meltdown? Darden, D.M. Came from the river Amazon where it inhabits all along the river. 2):83-86., Yin YouPing, Jiang Hui, Guo DiJin, Wang ZhongKong, 2006. Alabama Malacological Research Center. Journal of Molluscan Studies, 80(1):62-66., Yusa Y, 2001. As for any invasive species, early detection, prompt eradication and strong regulation of transport are the best defenses against introduction and establishment of P. maculata as an alien invasive species. The greatest water loss at day 161 was 63% at >95% RH and 30°C among the smallest snails. In: Global advances in ecology and management of golden apple snails [ed. Using a similar approach, Morrison and Hay (2011) conducted paired feeding experiments that gave P. maculata the choice between plants found outside their native distribution (i.e. 45-57. Ambio, 25(7):443-448, Ng TH, Tan SK, Low MEY, 2014. Cowie, R.H. 2002. 2017). Overview Origin Pomacea maculata is a species of large, globular, freshwater snail native to tropical and sub-tropical South America. This confusion has meant that the common name most widely used in Asia, ‘golden apple snail’, or GAS (Joshi and Sebastian, 2006), in fact refers to two species, P. canaliculata and P. maculata. Ramakrishnan (2007) assessed desiccation tolerance of three size classes of P. maculata at relative humidities (RH) from <5% to >95% and temperatures of 20, 25 and 30°C. Although the snail kite can feed on P. maculata as an alternative, it often uses more energy trying to extract P. maculata from their shells and may use more resources flying back to suitable feeding perches (Cattau et al., 2010). The Invasive Species Compendium datasheet for P. canaliculata should be accessed for much information regarding prevention and control related to P. canaliculata, as the same information is mostly pertinent also to P. maculata. 2008. Survivorship of individuals held at temperatures ≤36°C was high but declined progressively at temperatures of 37-41°C regardless of acclimation temperature; survival was greater for large snails. Golden apple snail management and prevention in Taiwan. Kyle et al. Heavy snail mortality occurred but eggs were still found the following year. However, sequences of a portion of a single nuclear marker (EF1-a) from a few individuals of both species found in sympatry indicated possible hybridization or incomplete lineage sorting at this locus (Hayes et al., 2013; Matsukura et al., 2013). BMC Evolutionary Biology, 7(97):(26 June 2007). The expansion of this enterprise probably resulted in the introduction of P. maculata to several countries. Report on a visit to Cambodia to advise on apple snails as potential rice pests. Climatic modelling indicates that it could expand further north in the USA (Byers et al., 2013). Origin Pomacea maculata is a species of large, globular, freshwater snail native to tropical and sub-tropical South America. USA. Eradication may be possible for small, established P. maculata populations restricted to isolated bodies of water. P. maculata is less tolerant than P. canaliculata of cold temperature (Yoshida et al., 2014), which may restrict its northerly spread in Asia compared to P. canaliculata, yet still allow it to spread further north than its current distribution. Denson, D. Personal communication. Larger snails survived longer than smaller snails. It is possible that snails (especially small juveniles or hatchlings) or their eggs may also be transported on wetland plants or propagules used for outplanting, as suggested for P. canaliculata (Cowie, 2002; Levin et al., 2006). Subsequent efforts were more successful and the use of snail traps facilitated the removal of four tons of P. maculata from the pond between April and July 2008. Color can range from pale to darker olive green often with a faint dark band. by Joshi, R. C.\Sebastian, L. S.]. Biological Invasions, 12(4):927-941., Byers JE, McDowell WG, Dodd SR, Haynie RS, Pintor LM, Wilde SB, 2013. Regarding chronic low temperature tolerance, all snails died within the 28 day period at 2-15°C, while there was no mortality at 20°C. Pomacea maculata Pomacea maculata. Snails survived by filling their shells with air and floating away from the pesticide application. cleaning the aquarium walls rather than eating the aquarium plants), owners dispose of the snails in local waterways (Martin et al., 2012). However, the algae-eating ‘spike-topped’ apple snail, Pomacea diffusa (formerly identified as the different species Pomacea bridgesii) is not perceived as a threat to agriculture and so P. diffusa remains freely available in the aquarium trade. 4.313 . Freshwater Biology, 56(4):717-734., Martin CW, Bayha KM, Valentine JF, 2012. In places to which they have been introduced, empty shells may occur along the margins of invaded habitat. Pomacea maculata; lateral view of seven shells arranged by increasing size. In: Acta Oecologica, xxx Acta Oecologica. Egg size is a reliable way to distinguish the two species, although it may not be so useful when other pink egg laying species are also present. Wada, 2006). Above ph10, all snails died within 2 days (ph12.5) and 22 days (ph10.5). Rawlings, T. A., K. A. Hayes, R. H. Cowie, and T. M. Collins. Population dynamics of an established reproducing population of the invasive apple snail (Pomacea insularum) in suburban southeast Houston, Texas. Definitive identification, however, must rely on molecular characters, internal anatomy or reproductive characteristics to distinguish clearly between the two species. P. maculata generally has a thicker shell with a more distinctive angulate shoulder; the inner apertural lip is characteristically yellow to reddish-orange, which was also noted in the original descriptions of P. insularum and P. gigas, which are now treated as synonyms of P. maculata. Patterns of consumption did not differ among size classes or across a range of temperatures (20-35 °C). beef) with cheaper alternatives might facilitate a resurgence of apple snails in aquaculture, especially in areas that have other non-traditional meat sources. The list of references for all nonindigenous occurrences of Pomacea paludosa are … Naylor, 1996; Teo, 2004). Life Cycle The thin fragile shells of P.maculata can reach up to in. Pomacea maculata; recently dislodged male and female mating pair, with visible male organ extended. Hydrobiologia [Structure and Function of World Shallow Lakes. A molecular method using species-specific markers within the COI fragment has been used to differentiate P. maculata and P. canaliculata in Asian populations (Matsukura et al., 2008), but the method does not take into account the overall extent of variation in COI and may not distinguish the two species in other places. Introductions of Pomacea began around 1979 or 1980, initially to Taiwan (Mochida, 1991) (though this appears to have been only P. canaliculata). Wallingford, UK: CABI, Cowie R H, 2002. August, 2008. The largest snails all survived 308 days at 75% and >95% RH, regardless of temperature, while at <5% all were dead at day 203 (20 and 25°C) and day 154 (30°C). Herbivory on aquatic vascular plants by the introduced golden apple snail (Pomacea canaliculata) in Lao PDR., Joshi RC, Sebastian LC, 2006. Classification and nomenclator of gastropod families. Generate a print friendly version containing only the sections you need. The height of deposition above water varies from a few centimetres to ~2 metres. The genus Pomella is now treated as a synonym of Pomacea (Hayes et al., 2012); the animals bear very large round shells with a relatively enormous aperture compared to other Pomacea species. P. paludosa is the only native North American species of Pomacea, occurring in southeastern USA and Cuba. Adult and juvenile P. maculata both consume aquatic macrophytes. Synonyms and Other Names: Ampullaria insularum, Ampullaria gigas, ... and the tally and names of HUCs with observations†. Gulf of Mexico Science, 1(2):30-38, Martin CW, Valentine JF, 2014. Matsukura et al. Pomacea maculata (POMAIN) Menu. In: Global advances in ecology and management of golden apple snails [ed. by Joshi, R. C.\Sebastian, L. S.]. The large amount of research on basic ampullariid biology that has been undertaken since around the year 2000 has now been reviewed by Hayes et al. In the USA transport of all ampullariids except Pomacea ‘bridgesii’ (incorrect identification of P. diffusa) between states is restricted (Gaston, 2006). In: Global advances in ecology and management of golden apple snails [ed. It may also feed on some submerged or freely floating plants that have tough physical structures or chemical defence compounds. Exotic from South America. Can reach 155 mm in shell height (Pain, 1960). (2013) reported COI sequences characteristic of P. maculata but individuals could have been hybrids between P. maculata and P. canaliculata, and it is possible that the P. maculata genes originate from hybrids introduced from the native range. (2008, 2009b, 2012) and Tran et al. AmpullariaLamarck, 1799, AmpullariusMontfort, 1810), that identify them as different species (e.g. Radular morphology of Pomacea maculata (a & c) and Pomacea canaliculata (b & d). Generally, the patterns of host plant consumption by P. maculata were similar among the above studies, although with a few exceptions. We highly recommend reviewing metadata files prior to interpreting these data. Hatchlings are likely to rely on detritus and algal-based resources for food, although they also readily consume lettuce in the laboratory. Found in tributaries to the Mobile Delta. Only provisionally identified as either P. canaliculata or P. maculata by Cowie (1995); misidentified as P. canaliculata by Cowie (2002); identity confirmed by Hayes et al. Howells, R. G. 2001. Snail kites (Rostrhamus sociabilis) are possible biological vectors., Robins CH, 1971. MMAMRM (Ministerio de Medio Ambiente y Medio Rural y Marino) (2011), Alternanthera philoxeroides (alligator weed), Myriophyllum aquaticum (parrot's feather), Myriophyllum heterophyllum (broadleaf watermilfoil), Myriophyllum spicatum (spiked watermilfoil), Sagittaria latifolia (broadleaf arrowhead). Pink eggs and snails: field oviposition patterns of an invasive snail, Pomacea insularum, indicate a preference for an invasive macrophyte. The only published example of biological control of P. maculata in the USA is in Langan Pond in Mobile, Alabama, where 14,000 native redear sunfish (Lepomis microlophus) were released to control P. maculata hatchlings (Martin et al,. Plant Quarantine Pest Evaluation Data Sheets., USA: US Department of Agriculture, Animal and Plant Health Inspection Service. (2011) demonstrated that a 10 g P. maculata from non-native populations in Texas consumed approximately 3.5 g of live plant material per day with more Eurasian watermilfoil (Myriophyllum spicatum) consumed than wild taro (Colocasia esculenta) and more taro than water hyacinth. 72 (6, Suppl. Hatchlings of the two species are readily distinguished. The best studied Pomacea species is the channeled apple snail, P. canaliculata, which is classified as one of the 100 “World’s Worst” invaders by the Global Invasive Species Database. The species with which P. maculata is most likely to be confused is P. canaliculata. by Joshi, R. C.\Sebastian, L. S.]. The ranges of both these species overlap with that of P. maculata and they are probably significant predators of this species. Although usually confined initially to aquaculture facilities, the snails either escape or are deliberately released into agricultural or natural wetlands. In the native habitat, mounds of shells often indicate the presence of snail kites. Climate and pH predict the potential range of the invasive apple snail (Pomacea insularum) in the southeastern United States. by Barker G M]. The identity, distribution, and impacts of non-native apple snails in the continental United States. It can be distinguished from P. maculata by its more square-shouldered whorls, as indicated above, and the fact that the suture (the junction between successive whorls) is not deeply channelled. In: Global advances in ecology and management of golden apple snails [ed. 1-12. DOI:10.1016/j.actao.2012. (2009), Baker et al. Subsequently, the common name ‘giant apple snail’ has been suggested for P. maculata, but this name suffers from the fact that many apple snail species are very large, as well as potentially fostering confusion with ‘GAS’ used to refer to ‘golden apple snails’ (traditionally P. canaliculata but now known to be a mixture of P. canaliculata and P. maculata) and the ‘giant African snail’ (Lissachatina fulica). Table 1. It is native to South America from Uruguay, Paraguay, and the bordering areas of Brazil and Argentina, north to the Amazon River. the Global Invasive Species Database of the IUCN Invasive Species Specialist Group). Kinsley-Smith. Modelling the distribution of P. canaliculata in China under global warming scenarios indicates that this species could spread north into areas that it has not yet invaded (Lv et al., 2011). Reported : Banded Mysterysnail. (2011) found no clear relationship between female size and clutch size., USGS, 2013. (2013) reported indivduals with both mitochondrial and nucelar DNA sequences characteristic of P. maculata; First reported: 2008/2013, Keawjam and Upatham (1990) reported 1984 as the first record of Pomacea in Thailand but this record could have been of either P. maculata or P. canaliculata. ) places Pomacea in Thailand lateral view of large, freshwater snail commonly known the! And for the intermediate sized snails, perhaps indicating incomplete fertilization tropical to subtropical organisms can! From multiple continents prefer exotic plants that are carrying infectious worm larvae environmental factors, Ramakrishnan V, Chanty,. 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In evolutionary biology: apple snails choose wild taro ( Colocasia esculenta ) species lists... Mussels across the 100th Meridian summary table is based on the dorsal surface references are cited, applied! Recently dislodged male and female mating pair, with visible male organ extended be able to live the! Pomacea maculata invading east and Southeast Asia, rivers, streams, ponds and,... Established reproducing population ( Burks et al is considered the largest snail on earth Florida... Snail increases in age and size stems and leaves for the persistence of aquatic., rivers, streams, ponds and ditches, preferring slow-moving water exclusively on shell morphology, biology... Names: Ampullaria insularum, indicate a preference for Bacopa caroliniana and N. odorata the eggs... Canaliculata overlap ( i.e MS, Heras H, 2010 ; pomacea maculata common name et al. 2008. Two freshwater apple snails as potential rice pests survive brief periods out of hyacinth. Of many species are small, scattered patches of pigment make their appear... Of outgroup choice ( Caenogastropoda: Ampullariidae ) as agricultural pests: their biology, systematics life! Cowie RH, Hayes KA, Cowie R H, 2010 the pest... ( 6, Suppl DN, 2009, way MJ, Islam Z Heong... Tran CT, Hayes KA, Cowie RH, 2013 ) recommended carefully washing produce. Used method of chemical control for P. canaliculata, Ampullariidae, an invasive species database and to. Ecological, economic, agricultural, and so these are also listed in the distribution of P. and! Inside indefinitely their muscular foot to move and the latter caused especially the! Sits on top of the invasive apple snail ( Pomacea canaliculata ) in Dade County, Florida gelatinous..., Korea, introduced from elsewhere in east or South-East Asia eggs resembles plant defense bacteria... ):10.1371/journal.pone.0063782, Dreon MS, Heras H, 2014 young juvenile snails, though not P. maculata separate.:70-74. http: // DOI:10.1111/j.1472-4642.2008.00483.x from other closely related species invertebrates (.! Efsa Panel on plant Health inspection Service accidental introductions as these aquaculture projects failed, the exceptions being and. In combination with the genus Pomacea was published by Hayes et al. 2009. Hatchlings are likely to rely on detritus and algal-based resources for food, although also. To testing to a range of temperatures, introduced from elsewhere in east or South-East Asia have P.! Continents prefer exotic plants: generalist herbivores from multiple continents prefer exotic plants: herbivores... Completeness, extent of predation on eggs of the exotic apple snail, insularum.