Can we predict risky human behaviour involving invasive species? A case study of the release of fishes to the wild

Drake, David; Mercader, Rebecca; Dobson, Tracy; Mandrak, Nicholas E.

doi:10.1007/s10530-014-0729-7

Cited by 30 publications

(25 citation statements)

References 49 publications

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“…The use of baitfish is also common across North America (Drake and Mandrak ; Drake et al. ) and is still allowed in many waters of Montana, including the Yellowstone where bullfrogs occur. These trades are expected to continue posing a substantial risk for future invasions, particularly for herpetofauna (Kraus ).…”

Section: Discussionmentioning

confidence: 99%

Genetic reconstruction of a bullfrog invasion to elucidate vectors of introduction and secondary spread

Kamath

Sepulveda

Layhee

2016

Ecology and Evolution

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Reconstructing historical colonization pathways of an invasive species is critical for uncovering factors that determine invasion success and for designing management strategies. The American bullfrog (Lithobates catesbeianus) is endemic to eastern North America, but now has a global distribution and is considered to be one of the worst invaders in the world. In Montana, several introduced populations have been reported, but little is known of their sources and vectors of introduction and secondary spread. We evaluated the genetic composition of introduced populations at local (Yellowstone River floodplain) and regional (Montana and Wyoming) scales in contrast to native range populations. Our objectives were to (1) estimate the number of introductions, (2) identify probable native sources, (3) evaluate genetic variation relative to sources, and (4) characterize properties of local‐ and regional‐scale spread. We sequenced 937 bp of the mitochondrial cytochrome b locus in 395 tadpoles collected along 100 km of the Yellowstone River, from three additional sites in MT and a proximate site in WY. Pairwise ΦST revealed high divergence among nonnative populations, suggesting at least four independent introductions into MT from diverse sources. Three cyt b haplotypes were identical to native haplotypes distributed across the Midwest and Great Lakes regions, and AMOVA confirmed the western native region as a likely source. While haplotype (H d = 0.69) and nucleotide diversity (π = 0.005) were low in introduced bullfrogs, the levels of diversity did not differ significantly from source populations. In the Yellowstone, two identified haplotypes implied few introduction vectors and a significant relationship between genetic and river distance was found. Evidence for multiple invasions and lack of subsequent regional spread emphasizes the importance of enforcing legislation prohibiting bullfrog importation and the need for continuing public education to prevent transport of bullfrogs in MT. More broadly, this study demonstrates how genetic approaches can reveal key properties of a biological invasion to inform management strategies.

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Section: Discussionmentioning

confidence: 99%

Genetic reconstruction of a bullfrog invasion to elucidate vectors of introduction and secondary spread

Kamath

Sepulveda

Layhee

2016

Ecology and Evolution

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“…Patoka et al (2014b) found 3.6% of crayfish owners released them, either into natural habitats (2.1%) or the sewers (1.5%). While most surveys show people support prevention of invasive species (e.g., Chang et al, 2009;Bohman & Edsman, 2011), about 70% of the releases are associated with convenience, rather than consideration of the environment (Drake et al, 2015). However, about 30% of risky behaviour is unpredictable (Drake et al, 2015).…”

Section: Risk Assessment Techniquesmentioning

confidence: 99%

The global trade in crayfish as pets

Faulkes¹

2015

Crust Res

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Abstract. The sale of crayfish in the pet trade has increased in recent decades, and a substantial fraction of the world s entire range of crayfish species is available in the pet trade. The market for pet crayfish creates two major concerns: the potential for over exploitation of natural populations of crayfish to supply the pet trade, and the negative consequences resulting from the release of non-indigenous crayfish into natural habitats. The chain from the source of crayfish to the final owner can be lengthy, and each step in the supply chain needs to be studied by different methods. While there are often regulations intended to limit the trade of crayfish as pets, they differ widely from place to place and seem to have limited success in changing the behaviour of owners of pet crayfish.

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“…First, unlike ballast water or hull fouling, bait transfers are designed explicitly to maximize in-transport survival by providing favourable environmental conditions and rapid delivery. A recent study by Drake et al (2015) found that freshwater live bait anglers released unused bait into the environment (rather than discarding it) due to convenience; moreover, there was a misconception that released bait could actually provide ecological benefits to natural resources. A recent study by Drake et al (2015) found that freshwater live bait anglers released unused bait into the environment (rather than discarding it) due to convenience; moreover, there was a misconception that released bait could actually provide ecological benefits to natural resources.…”

Section: Distinctive Attributes Of the Vectormentioning

confidence: 99%

“…Keller et al, 2007;Drake et al, 2015), the Maine marine baitworm trade differs significantly as a transport mechanism because it transfers a wide diversity and abundance of hitchhiking organisms of all life stages (including gravid females) that are naturally associated with wormweed, resulting in the relocation of relatively intact communities. Keller et al, 2007;Drake et al, 2015), the Maine marine baitworm trade differs significantly as a transport mechanism because it transfers a wide diversity and abundance of hitchhiking organisms of all life stages (including gravid females) that are naturally associated with wormweed, resulting in the relocation of relatively intact communities.…”

Section: Introductionmentioning

confidence: 99%

Opening Pandora's bait box: a potent vector for biological invasions of live marine species

Fowler

Blakeslee

Canning‐Clode

et al. 2015

Diversity and Distributions

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Aim For over 80 years, the Maine baitworm trade has shipped live polychaete worms and packing algae 'wormweed' to distributors world-wide, while also consistently transferring a wide diversity and abundance of hitchhiking organisms of all life stages to numerous recipient communities. Here, we investigate this potent, yet underestimated, invasion vector using an important recipient region (the Mid-Atlantic) to examine the stepwise species transfer and survival along four stages of the vector.Location Maine and Mid-Atlantic region (New Jersey, Delaware, Maryland, Virginia and North Carolina), USA.Methods We quantified taxonomic identities and abundances of organisms associated with packing algae at four stages along the vector pathway during summer 2011: (1) Maine source habitats; (2) bait boxes from Maine distributors; (3) bait boxes from distributors in five Mid-Atlantic States; and (4) bait bags from retailers in five Mid-Atlantic States. We also examined functional diversity based on significant physical and life history characteristics and assessed genetic diversity for two common hitchhiking snail species. Results We identified 17,798 live macro-organisms across 58 taxa, including marine macro-invertebrates, macroalgae, vascular plants and semi-terrestrial or aquatic invertebrates, present in bait boxes and bags. In all measures of diversity and abundance, we observed decreases of live marine macro-invertebrates across sequential stages of the vector from source to recipient regions. Significant differences in community composition were also observed between stages and were driven by isopods (taxonomic diversity) and isopods, amphipods and some gastropods (functional diversity).Main conclusions The lack of management in the face of the sheer magnitude and diversity of organisms that are transported via the live marine bait trade underscores how this is an underappreciated vector that could be a considerable source of successful invasions globally.

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Can we predict risky human behaviour involving invasive species? A case study of the release of fishes to the wild

Cited by 30 publications

References 49 publications

Genetic reconstruction of a bullfrog invasion to elucidate vectors of introduction and secondary spread

Genetic reconstruction of a bullfrog invasion to elucidate vectors of introduction and secondary spread

The global trade in crayfish as pets

Opening Pandora's bait box: a potent vector for biological invasions of live marine species

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