The need for enemy-free space: The impact of an invasive gecko on island endemics

Cole, Nik C.; Jones, Carl G.; Harris, Stephen

doi:10.1016/j.biocon.2005.04.017

Cited by 110 publications

(102 citation statements)

References 32 publications

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“…Impacts documented for alien reptiles and amphibians include, for example, extinctions or declines of native prey species (Fritts and Rodda 1998;Karube and Suda 2004;Greenlees et al 2006), poisoning of native predators (Doody et al 2006a, b, competitive displacement (Boland 2004Cole et al 2005), disease transmission (Daszak et al 1999;Garner et al 2006), hybridization with and genetic swamping of native species (Arntzen and Thorpe 1999;Riley et al 2003;Storfer et al 2004), evolutionary changes in native species Shine 2004, 2006a, b), economic damage (Fritts et al 1987;Fritts and McCoid 1999;Fritts and Chiszar 1999;Kaiser and Burnett 2006), and human-health damage (Fritts et al 1990(Fritts et al , 1994. Many additional examples exist (Kraus in preparation), yet impacts from invasive herpetofauna have been little studied.…”

Section: Introductionmentioning

confidence: 99%

Predicting establishment success for alien reptiles and amphibians: a role for climate matching

et al. 2008

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We examined data comprising 1,028 successful and 967 failed introduction records for 596 species of alien reptiles and amphibians around the world to test for factors influencing establishment success. We found significant variations between families and between genera. The number of jurisdictions where a species was introduced was a significant predictor of the probability the species had established in at least one jurisdiction. All species that had been introduced to more than 10 jurisdictions (34 species) had established at least one alien population. We also conducted more detailed quantitative comparisons for successful (69 species) and failed (116 species) introductions to three jurisdictions (Great Britain, California and Florida) to test for associations with climate match, geographic range size, and history of establishment success elsewhere. Relative to failed species, successful species had better climate matches between the jurisdiction where they were introduced and their geographic range elsewhere in the world.Successful species were also more likely to have high establishment success rates elsewhere in the world. Cross-validations indicated our full model correctly categorized establishment success with 78-80% accuracy. Our findings may guide risk assessments for the import of live alien reptiles and amphibians to reduce the rate new species establish in the wild.

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Section: Introductionmentioning

confidence: 99%

Predicting establishment success for alien reptiles and amphibians: a role for climate matching

et al. 2008

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“…For many reptile species, competition with nonnative reptiles has been found to drive population declines (Case and Bolger 1991;Case et al 1994;Petren and Case 1996;Gibbons et al 2000;Cole et al 2005). In particular, exploitative competition has been demonstrated to be a major driver of population declines of native geckos in other areas facing Hemidactylus invasions.…”

Section: Feeding Plasticity and Opportunity Along An Urban Gradientmentioning

confidence: 99%

Disentangling the Influence of Urbanization and Invasion on Endemic Geckos in Tropical Biodiversity Hot Spots: A Case Study ofPhyllodactylus martini(Squamata: Phyllodactylidae) along an Urban Gradient in Curaçao

Dornburg¹,

Lippi

Federman

et al. 2016

Bulletin of the Peabody Museum of Natural History

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Predicting the response of endemic species to urbanization has emerged as a fundamental challenge in 21st century conservation biology. The factors that underlie population declines of reptiles are particularly nebulous, as these are often the least understood class of vertebrates in a given community. In this study, we assess correlations between feeding ecology and phenotypic traits of the Lesser Antillean endemic Dutch leaf-toed gecko, Phyllodactylus martini, along an urban gradient in the Caribbean island of Curaçao. There has been a marked decline of this species in developed habitats associated with the invasive tropical house gecko Hemidactylus mabouia. We find a correlation between aspects of locomotor morphology and prey in undeveloped habitats that is absent in developed habitats. Analyses of stomach contents further suggest that Phyllodactylus martini alters primary prey items in developed areas. However, changes in prey promote the overlap in foraging niches between Phyllodactylus martini and Hemidactylus mabouia, suggesting that direct resource competition is contributing to the decline of Phyllodactylus martini. In addition to competitive exclusion, we suggest that the urban extirpation of Phyllodactylus martini could also be attributed to a top-down control on population growth by Hemidactylus mabouia. Colonizations of walls put Phyllodactylus martini in direct contact with Hemidactylus mabouia increasing the chances for predation events, as evidenced by our observation of a predation event on a Phyllodactylus martini juvenile by an adult Hemidactylus mabuoia. In total, our results add to a growing body of literature demonstrating the threat that invasive synanthropic reptiles pose to endemics that might otherwise be able to cope with increased urbanization pressures.

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“…Non-native and especially invasive organisms are generally regarded as a major threat to biodiversity [1][2][3][4][5]. Their impact is apparently not equal over all habitats and ecoregions.…”

Section: Introductionmentioning

confidence: 99%

Resource Use by Non-Native Ring-Necked Parakeets (Psittacula krameri) and Native Starlings (Sturnus vulgaris) in Central Europe

Czajka¹

2011

TOOENIJ

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Abstract:In general, non-native bird species may competitively exclude native species from nest sites. The potential resource conflict between a native and an introduced bird species, the native European Starling (Sturnus vulgaris) and the introduced Asian Ring-necked Parakeet (Psittacula krameri), was inferred from hole occupancy in parks of the German Upper Rhine Valley (Wiesbaden, Mannheim, Schwetzingen, Edingen-Neckarhausen), where Ring-necked Parakeets have been known to occur for 15 to 35 years. Only 2.2 % of trees (n = 3487) had cavities with an entrance diameter ≥4 cm. The number of unoccupied tree holes was high, representing 71 % of 639 recorded cavities. A niche separation corresponding to tree size and tree species preferred by both bird species could be detected. Starling preferred trees with a diameter of 0.75 ± 0.30 m, whereas Ring-necked Parakeet favoured ones with 1.16 ± 0.36 m in diameter. Both bird species were the most abundant hole-nesters in the examined cavities. Ring-necked Parakeets preferred Platanus x hispanica, which hosted 57 % of all broods for the parakeet, but did not use Acer pseudoplatanus. Starling favoured Quercus robur with 25 % of all broods, followed by A. pseudoplatanus with 19 %. P. x hispanica showed the highest numbers of cavities with 227 in total and a median of 3 holes per tree, partially produced by Ring-necked Parakeet. The largest colony-in-one-tree in this study was 9 for P. krameri and 5 for S. vulgaris. In this study, Starlings took over two nests from Ring-necked Parakeets, with one case vice versa, and Honeybees took over one active Ring-necked Parakeet nest.

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The need for enemy-free space: The impact of an invasive gecko on island endemics

Cited by 110 publications

References 32 publications

Predicting establishment success for alien reptiles and amphibians: a role for climate matching

Predicting establishment success for alien reptiles and amphibians: a role for climate matching

Disentangling the Influence of Urbanization and Invasion on Endemic Geckos in Tropical Biodiversity Hot Spots: A Case Study ofPhyllodactylus martini(Squamata: Phyllodactylidae) along an Urban Gradient in Curaçao

Resource Use by Non-Native Ring-Necked Parakeets (Psittacula krameri) and Native Starlings (Sturnus vulgaris) in Central Europe

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