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Cryptic extinction of a common Pacific lizard Emoia impar (Squamata, Scincidae) from the Hawaiian Islands

  • Robert Fisher (a1) and Ivan Ineich (a2)
Abstract
Abstract

Most documented declines of tropical reptiles are of dramatic or enigmatic species. Declines of widespread species tend to be cryptic. The early (1900s) decline and extinction of the common Pacific skink Emoia impar from the Hawaiian Islands is documented here through an assessment of literature, museum vouchers and recent fieldwork. This decline appears contemporaneous with the documented declines of invertebrates and birds across the Hawaiian Islands. A review of the plausible causal factors indicates that the spread of the introduced big-headed ant Pheidole megacephala is the most likely factor in this lizard decline. The introduction and spread of a similar skink Lampropholis delicata across the islands appears to temporally follow the decline of E. impar, although there is no evidence of competition between these species. It appears that L. delicata is spreading to occupy the niche vacated by the extirpated E. impar. Further confusion exists because the skink E. cyanura, which is very similar in appearance to E. impar, appears to have been introduced to one site within a hotel on Kaua'i and persisted as a population at that site for approximately 2 decades (1970s–1990s) but is now also extirpated. This study highlights the cryptic nature of this early species extinction as evidence that current biogeographical patterns of non-charismatic or enigmatic reptiles across the Pacific may be the historical result of early widespread invasion by ants. Conservation and restoration activities for reptiles in the tropical Pacific should consider this possibility and evaluate all evidence prior to any implementation.

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(Corresponding author) E-mail rfisher@usgs.gov
References
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Abbott K.L. (2006) Spatial dynamics of supercolonies of the invasive yellow crazy ant, Anoplolepis gracilipes, on Christmas Island, Indian Ocean. Diversity and Distributions, 12, 101110.
Adler G.H., Austin C.C. & Dudley R. (1995) Dispersal and speciation of skinks among archipelagos in the tropical Pacific Ocean. Evolutionary Ecology, 9, 529541.
Allison A. (1996) Zoogeography of amphibians and reptiles of New Guinea and the Pacific region. In The Origin and Evolution of Pacific Island Biotas, New Guinea to Eastern Polynesia: Patterns and Processes (eds Keast A. & Miller S.E.), pp. 407436. SPB Academic Publishing, Amsterdam, The Netherlands.
Andersen A.N. (1995) Measuring more of biodiversity: genus richness as a surrogate for species richness in Australian ant faunas. Biological Conservation, 73, 3943.
Atkinson I.A.E. (1977) Reassessment of factors, particularly Rattus rattus, that influenced decline of endemic forest birds in Hawaiian Islands. Pacific Science, 31, 109133.
Atkinson I.A.E. & Atkinson T.J. (2000) Land vertebrates as invasive species on islands served by the South Pacific Regional Environment Programme. In Invasive Species in the Pacific: A Technical Review and Draft Regional Strategy (ed. Sherley G.), pp. 1984. South Pacific Regional Environment Programme, Apia, Samoa.
Austin C.C. (1999) Lizards took express train to Polynesia. Nature, 397, 113114.
Baker K. (1976) The occurrence and ecological significance of metallic skinks on the islands of Hawai'i and Kaua'i. In Proceedings of the First Conference in Natural Sciences in Hawaii (ed. Smith C.W.), pp. 1118. Hawaii Field Research Center, Hawaii Volcanoes National Park, Hawaii, USA.
Baker J. (1979) The rainbow skink, Lampropholis delicata, in Hawaii. Pacific Science, 33, 207212.
Bazzano J. (2007) Herpetological Inventory in West Hawai'i National Parks: Pu'uhonua o Honaunau National Historical Park, Koloko-Honokohau National Historical Park, and Pu'ukoholà Heiau National Historic Site. Pacific Cooperative Studies Unit, University of Hawai'i at Mànoa, Hawaii, USA.
Bickford D., Lohman D.J., Sodhi N.S., Ng P.K., Meier R. et al. (2007) Cryptic species as a window on diversity and conservation. Trends in Ecology & Evolution, 22, 148155.
Bonnaud E., Medina F.M., Vidal E., Nogales M., Tershy B., Zavaleta E. et al. (2010) The diet of feral cats on islands: a review and a call for more studies. Biological Invasions, 13, 581603.
Bruna E.M., Fisher R.N. & Case T.J. (1996a) Morphological and genetic evolution appear decoupled in Pacific skinks (Squamata: Scincidae: Emoia). Proceedings of the Royal Society of London. Series B, Biological Sciences, 263, 681688.
Bruna E.M., Fisher R.N. & Case T.J. (1996b) New evidence of habitat segregation between two cryptic species of Pacific skinks (Emoia cyanura and E. impar). Copeia, 1996, 9981005.
Burney D.A., James H.F., Burney L.P., Olson S.L., Kikuchi W., Wagner W.L. et al. (2001) Fossil evidence for a diverse biota from Kaua'i and its transformation since human arrival. Ecological Monographs, 71, 615641.
Case T.J., Bolger D.T. & Richman A.D. (1991) Reptilian extinctions over the last ten thousand years. In Conservation Biology for the Coming Decade (eds Fiedler P.L. & Kareiva P.), pp. 157186. Chapman and Hall, New York, USA.
Chalcraft D.R. & Andrews R.M. (1999) Predation on lizard eggs by ants: species interactions in a variable physical environment. Oecologia, 119, 285292.
Cowie R.H. & Holland B.S. (2008) Molecular biogeography and diversification of the endemic terrestrial fauna of the Hawaiian Islands. Philosophical Transactions of the Royal Society B: Biological Sciences, 363, 33633376.
Diffie S., Miller J. & Murray K. (2010) Laboratory observations of red imported fire ant (Hymenoptera: Formicidae) predation on reptilian and avian eggs. Journal of Herpetology, 44, 294296.
Eisen R.J. (2001) Absence of measurable malaria-induced mortality in western fence lizards (Sceloporus occidentalis) in nature: a 4-year study of annual and over-winter mortality. Oecologia, 127, 586589.
Feare C. (1999) Ants take over from rats on Bird Island, Seychelles. Bird Conservation International, 9, 9596.
Fisher R.N. (1997) Dispersal and evolution of the Pacific Basin gekkonid lizards Gehyra oceanica and Gehyra mutilata. Evolution, 51, 906921.
Fisher R.N., Suarez A.V. & Case T.J. (2002) Spatial patterns in the abundance of the coastal horned lizard. Conservation Biology, 16, 205215.
Gibbons J.R.H. (1985) The biogeography and evolution of Pacific island reptiles and amphibians. In Biology of Australasian Frogs and Reptiles (eds Grigg G., Shine R. & Ehmann H.), pp. 125142. Royal Zoological Society of New South Wales, Sydney, Australia.
Gillespie R.G. & Riemer N. (1993) The effect of alien predatory ants (Hymenoptera: Formicidae) on Hawaiian endemic spiders (Araneae: Tetragnathidae). Pacific Science, 47, 2133.
Girard C. (1858) United States Exploring Expedition during the Years 1838, 1839, 1840, 1841, 1842. Under the Command of Charles Wilkes, U.S.N. Herpetology. J.B. Lippincott, Philadelphia, USA.
Goldberg S.R., Bursey C.R. & Fisher R.N. (2005) Helminth records of eleven species of Emoia (Sauria: Scincidae) from Oceania. Pacific Science, 59, 609614.
Goldberg S.R., Bursey C.R. & Kraus F. (2008) Gastrointestinal helminths of eleven species of Emoia (Squamata: Scincidae) from Papua New Guinea. Journal of Natural History, 42, 19231935.
Gorman M.L. (1975) The diet of feral Herpestes auropunctatus (Carnivora: Viverridae) in the Fijian Islands. Journal of Zoology, London, 175, 273278.
Hanley K.A., Vollmer D.M. & Case T.J. (1995) The distribution and prevalence of helmiths, coccidia and blood parasites in two competing species of gecko—implications for apparent competition. Oecologia, 102, 220229.
Hansen D.M. & Müller C.B. (2009) Invasive ants disrupt gecko pollination and seed dispersal of the endangered plant Roussea simplex in Mauritius. Biotropica, 41, 202208.
Holway D.A., Lach L., Suarez A.V., Tsutsui N.D. & Case T.J. (2002) The causes and consequences of ant invasions. Annual Review of Ecology and Systematics, 33, 181233.
Howarth F.G. (1985) Impacts of alien land arthropods and mollusks on native plants and animals in Hawai'i. In Hawai'i's Terrestrial Ecosystems: Preservation and Management (eds Stone C.P. & Scott J.M.), pp. 149179. Cooperative National Park Resources Studies Unit, University of Hawai'i, Honolulu, USA.
Hunsaker D. & Breese P. (1967) Herpetofauna of Hawaiian Islands. Pacific Science, 21, 423428.
Ineich I. (1987a) Recherches sur le peuplement et l'évolution des Reptiles terrestres de Polynésie française. PhD thesis, Université des Sciences et Techniques du Languedoc, Montpellier, France.
Ineich I. (1987b) Description d'une nouvelle espèce du genre Emoia (Sauria, Scincidae) en Polynésie française. Bulletin du Muséum National d'Histoire Naturelle. 4e Serie, 9, 491494.
Ineich I. & Zug G.R. (1991) Nomenclatural status of Emoia cyanura (Lacertilia, Scincidae) populations in the Central Pacific. Copeia, 1991, 11321136.
James H.F., Stafford T.W., Steadman D.W., Olson S.L., Martin P.S., Jull A.J.T. & McCoy P.C. (1987) Radiocarbon-dates on bones of extinct birds from Hawaii. Proceedings of the National Academy of Sciences of the USA, 84, 23502354.
Jones V.P., Westcott D.M., Finson N.N. & Nishimoto R.K. (2001) Relationship between community structure and Southern green stink bug (Heteroptera: Pentatomidae) damage in macadamia nuts. Community and Ecosystem Ecology, 30, 10281035.
Jourdan H., Sadlier R.A. & Bauer A.M. (2001) Little fire ant invasion (Wasmannia auropunctata) as a threat to New Caledonian lizards: evidence from a sclerophyll forest (Hymenoptera: Formicidae). Sociobiology, 38, 283301.
Keogh J.S., Edwards D.L., Fisher R.N. & Harlow P.S. (2008) Molecular and morphological analysis of the critically endangered Fijian iguanas reveals cryptic diversity and a complex biogeographic history. Philosophical Transactions of the Royal Society B: Biological Sciences, 363, 34133426.
Kirkpatrick R.D. & Rauzon M.J. (1986) Foods of feral cats Felis catus on Jarvis and Howland Islands, central Pacific Ocean. Biotropica, 18, 7275.
Kraus F. (2002) New records of alien reptiles in Hawai'i. Bishop Museum Occasional Papers, 69, 4852.
Kraus F. (2005) Inventory of reptiles and amphibians in Hawai'i Volcanoes, Haleakula, and Kalaupapa National Parks. Hawaii Biological Survey Contribution No. 2005-013. Bishop Museum, Honolulu, Hawai'i, USA.
Kraus F. (2009) Alien Reptiles and Amphibians: A Scientific Compendium and Analysis. Springer-Verlag, New York, USA.
Kraus F. & Duvall F. (2004) New records of alien reptiles and amphibians in Hawai'i. Bishop Museum Occasional Papers, 79, 6264.
Krushelnycky P.D., Loope L.L. & Reimer N.J. (2005) The ecology, policy, and management of ants in Hawaii. Proceedings of the Hawaiian Entomological Society, 37, 125.
LaPolla J.S., Otte D. & Spearman L.A. (2000) Assessment of the effects of ants on Hawaiian crickets. Journal of Orthoptera Research, 9, 139148.
La Rivers I. (1948) Some Hawaiian ecological notes. The Wasmann Collector, 7, 85110.
Lazell J. (1986) The skinks of Poi'pu, Kaua'i. Journal of Audubon Society, 46, 155.
Lorvelec O. & Pascal M. (2006) Les vertébrés de Clipperton soumis à un siècle et demi de bouleversements écologiques. Revue d'Ecologie (La Terre et la Vie), 61, 135158.
Mann W.M. (1921) The ants of the Fiji Islands. Bulletin of the Museum of Comparative Zoology, Harvard, 64, 401499.
McGregor R.C. (1904) Notes on Hawaiian reptiles from the island of Maui. Proceedings of the United States National Museum, 28, 115118.
McKeown S. (1996) A Field Guide to Reptiles and Amphibians in the Hawaiian Islands. Diamond Head Publishing, Los Osos, USA.
Mount R.H. (1981) The red imported fire ant, Solenopsis invicta (Hymenoptera: Formicidae), as a possible serious predator on some native south-eastern vertebrates: direct observations and subjective impressions. Journal of the Alabama Academy of Science, 52, 7178.
Oliver J.A. & Shaw C.E. (1953) The amphibians and reptiles of the Hawaiian Islands. Zoologica (New York), 38, 6595.
Perkins R.C.L. (1913) Introduction, being a review of the land fauna of Hawaii. In Fauna Hawaiiensis, pp. 15238. Cambridge University Press, Cambridge, UK.
Pernetta J.C. & Watling D. (1978) The introduced and native terrestrial vertebrates of Fiji. Pacific Science, 32, 223244.
Perry G., Rodda G.H., Fritts T.H. & Sharp T.R. (1998) The lizard fauna of Guam's fringing islets: island biogeography, phylogenetic history, and conservation implications. Global Ecology and Biogeography, 7, 353365.
Plentovich S., Hebashi A. & Conant S. (2009) Detrimental effects of two widespread invasive ant species on weight and survival of colonial nesting seabirds in the Hawaiian Islands. Biological Invasions, 11, 289298.
Quay W.B. (1973) Geographic spread and habits of the metallic skink, Lygosoma metallicum, on Kauai, Hawaiian Islands. Journal of Herpetology, 7, 308309.
Sanchez M. (2007) Observation d'une ponte de Phelsuma b. borbonica (Reptilia: Sauria: Gekkonidae) en présence de fourmis exotiques (Hymenoptera: Formicidae). Bulletin Phaethon, 25, 2428.
Sarty M., Abbott K.L. & Lester P.J. (2007) Community level impacts of an ant invader and food mediated coexistence. Insectes Sociaux, 54, 166173.
Schall J.J. (1996) Malarial parasites of lizards: diversity and ecology. Advances in Parasitology, 37, 255333.
Schall J.J., Bennett A.F. & Putnam R.W. (1982) Lizards infected with malaria: physiological and behavioral consequences. Science, 217, 10571059.
Schwaner T.D. & Ineich I. (1998) Emoia cyanura and E. impar (Lacertilia, Scincidae) are partially syntopic in American Samoa. Copeia, 1998, 247249.
Snyder J.O. (1917) Notes on Hawaiian lizards. Proceedings of the United States National Museum, 54, 1925.
Stejneger L. (1899) The land reptiles of the Hawaiian Islands. Proceedings of the United States National Museum, 21, 783813.
Tinker S.W. (1941) Animals of Hawaii: A Natural History of the Amphibians, Reptiles, and Mammals Living in the Hawaiian Islands. Tongg Publishing Company, Honolulu, Hawaii, USA.
Todd B.D., Willson J.D. & Gibbons J.W. (2010) The global status of reptiles and causes of their decline. In Ecotoxicology of Amphibians and Reptiles, 2nd edition (eds Sparling D.W., Linder G., Bishop C.A. & Krest S.), pp. 4767. CRC Press, Boca Raton, USA.
Towns D.R., Atkinson I.A.E. & Daugherty C. H. (2006) Have the harmful effects of introduced rats on islands been exaggerated? Biological Invasions, 8, 863891.
Turpin A. (2002) Un gecko vert de Manapany Phelsuma inexpectata victime d'une attaque mortelle de fourmis carnivores. Bulletin Phaethon, 15, 56.
van Riper C.I., van Riper S.G., Goff M.L. & Laird M. (1982) The Impact of Malaria on Birds in Hawaii Volcanoes National Park. University of Hawai'i Cooperative National Park. Resources Studies Unit Technical Report no 47. Honolulu, Hawaii, USA.
Warner R.E. (1968) The role of introduced diseases in the extinction of the endemic Hawaiian avifauna. Condor, 70, 101120.
Wedding C.J., Ji W. & Brunton D.H. (2010) Implications of visitations by shore skinks Oligosoma smithi to bait stations containing brodifacoum in a dune system in New Zealand. Pacific Conservation Biology, 16, 8691.
Werner F. (1901) Ergebnisse einer Reise nach dem Pacific (Schauinland 1896–1897). Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere, 14, 380387.
Wetterer J.K. (2007) Biology and impacts of Pacific island invasive species. 3. The African big-headed ant, Pheidole megacephala (Hymenoptera: Formicidae). Pacific Science, 61, 437456.
Zimmerman E.C. (1970) Adaptive radiation in Hawaii with special reference to insects. Biotropica, 2, 3238.
Zug G.R. (1985) A new skink (Reptilia, Sauria, Leiolopisma) from Fiji. Proceedings of the Biological Society of Washington, 98, 221231.
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