The Hitchhiker Wave: Non-native Small Terrestrial Vertebrates in the Galapagos. Cisneros-Heredia, D. F. In Torres, M. d. L. & Mena, C. F., editors, Understanding Invasive Species in the Galapagos Islands, of Social and Ecological Interactions in the Galapagos Islands, pages 95–139. Springer, Cham, 2018.
The Hitchhiker Wave: Non-native Small Terrestrial Vertebrates in the Galapagos [link]Paper  doi  abstract   bibtex   
Humans have translocated thousands of species of flora, fauna and microorganisms to places they would never have reached on their own. Non-native species may have effects on biological communities, ecosystem functions and human populations. In island environments, the effects of spreading non-native species on native biodiversity can be severe and lead to native ecosystem transformation and even endemic species extinction. The Galapagos Islands are a region of particular interest and relevance to the issue of species introduction and invasiveness.In this chapter, I analyse the current status of 25 non-native amphibians, reptiles and birds that have been reported in the Galapagos Islands. Six species have established self-sufficiently in Galapagos and may become invasive: Fowler’s snouted tree frog Scinax quinquefasciatus, common house gecko Hemidactylus frenatus, mourning gecko Lepidodactylus lugubris, dwarf gecko Gonatodes caudiscutatus, Peters’ leaf-toed gecko Phyllodactylus reissii and smooth-billed ani Crotophaga ani. Domestic fowl Gallus gallus holds feral populations, which may have self-sufficient populations, but evidence is unclear. I provide information on the distribution and natural history of non-native species of amphibians, reptiles and birds in Galapagos, including new data about the introduction history of S. quinquefasciatus; evidence on the establishment of H. frenatus on Isabela and San Cristobal islands; the first published record of a non-native snake in Galapagos—Lampropeltis micropholis; the first evidence of predation on squamate reptiles by G. gallus in Galapagos; and evidence of a probable major impact by C. ani due to extensive predation on the endemic Galapagos carpenter bee Xylocopa darwini. I comment on the invasiveness and impact potential of non-native species in Galapagos, identify vulnerable islands for the arrival of non-native species, identify potential hitchhiker that could arrive in the future and propose that it is important to rethink about how we understand, manage and prevent introductions of non-native species. The new wave of introduced species in Galapagos is formed by small hitchhikers, species that are easily overlooked, may travel in high numbers and are highly linked to human-made environments.
@incollection{cisneros-heredia_hitchhiker_2018,
	series = {Social and {Ecological} {Interactions} in the {Galapagos} {Islands}},
	title = {The {Hitchhiker} {Wave}: {Non}-native {Small} {Terrestrial} {Vertebrates} in the {Galapagos}},
	copyright = {All rights reserved},
	isbn = {978-3-319-67176-5 978-3-319-67177-2},
	shorttitle = {The {Hitchhiker} {Wave}},
	url = {https://link.springer.com/chapter/10.1007/978-3-319-67177-2_7},
	abstract = {Humans have translocated thousands of species of flora, fauna and microorganisms to places they would never have reached on their own. Non-native species may have effects on biological communities, ecosystem functions and human populations. In island environments, the effects of spreading non-native species on native biodiversity can be severe and lead to native ecosystem transformation and even endemic species extinction. The Galapagos Islands are a region of particular interest and relevance to the issue of species introduction and invasiveness.In this chapter, I analyse the current status of 25 non-native amphibians, reptiles and birds that have been reported in the Galapagos Islands. Six species have established self-sufficiently in Galapagos and may become invasive: Fowler’s snouted tree frog Scinax quinquefasciatus, common house gecko Hemidactylus frenatus, mourning gecko Lepidodactylus lugubris, dwarf gecko Gonatodes caudiscutatus, Peters’ leaf-toed gecko Phyllodactylus reissii and smooth-billed ani Crotophaga ani. Domestic fowl Gallus gallus holds feral populations, which may have self-sufficient populations, but evidence is unclear. I provide information on the distribution and natural history of non-native species of amphibians, reptiles and birds in Galapagos, including new data about the introduction history of S. quinquefasciatus; evidence on the establishment of H. frenatus on Isabela and San Cristobal islands; the first published record of a non-native snake in Galapagos—Lampropeltis micropholis; the first evidence of predation on squamate reptiles by G. gallus in Galapagos; and evidence of a probable major impact by C. ani due to extensive predation on the endemic Galapagos carpenter bee Xylocopa darwini. I comment on the invasiveness and impact potential of non-native species in Galapagos, identify vulnerable islands for the arrival of non-native species, identify potential hitchhiker that could arrive in the future and propose that it is important to rethink about how we understand, manage and prevent introductions of non-native species. The new wave of introduced species in Galapagos is formed by small hitchhikers, species that are easily overlooked, may travel in high numbers and are highly linked to human-made environments.},
	language = {en},
	urldate = {2018-03-05},
	booktitle = {Understanding {Invasive} {Species} in the {Galapagos} {Islands}},
	publisher = {Springer, Cham},
	author = {Cisneros-Heredia, Diego F.},
	editor = {Torres, María de Lourdes and Mena, Carlos F.},
	year = {2018},
	doi = {10.1007/978-3-319-67177-2_7},
	pages = {95--139},
}
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