Crypticity in Biological Invasions

Jarić, Ivan; Heger, Tina; Monzon, Federico Castro; Jeschke, Jonathan M.; Kowarik, Ingo; McConkey, Kim R.; Pyšek, Petr; Sagouis, Alban; Essl, Franz

doi:10.1016/j.tree.2018.12.008

Cited by 79 publications

(49 citation statements)

References 76 publications

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“…Nevertheless, the species has been reported to use hydrographic networks to disperse overland between ponds (Chaput-Bardy, Alcala, Secondi, & Vuilleumier, 2017;Fouquet & Measey, 2006;Measey, 2016), at the juvenile and adult stages (Courant, 2017;De Villiers & Measey, 2017;Measey, 2016). Similarly to what has been observed in other invasive species characterised by high elusiveness (Jarić et al, 2019), an established alien population of X. laevis can remain undetected for years before any control action is undertaken (Measey et al, 2012;Sousa, Maurício, & Rebelo, 2018;Wang, Hong, & Measey, 2019). The elusive nature of X. laevis probably explains why the influence of landscape features on dispersal and establishment success of this amphibian has never been investigated before the development of eDNA techniques.…”

Section: Introductionmentioning

confidence: 85%

Assessing the effect of landscape features on pond colonisation by an elusive amphibian invader using environmental DNA

et al. 2019

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1. Environmental DNA (eDNA) is becoming an essential tool for detecting aquatic invasive species and investigating their spread. Surprisingly, this technique has been very rarely used to investigate habitat selection, site occupancy, and colonisation despite its higher capacity to detect many species.2. The African clawed frog (Xenopus laevis) is a principally aquatic amphibian introduced in several continents from South Africa. In western France, no recent systematic survey of the invasion range has been attempted, mainly because of the elusive nature of the species. Furthermore, the influence of landscape features on invasion has never been investigated, even if adults and juveniles are known to disperse overland and along river networks.3. Using presence-absence data generated by an eDNA survey conducted across the known invasion front of X. laevis in western France, we aimed to determine whether and how the landscape features surrounding a pond influence the probability that a pond is colonised. 4. Xenopus laevis was detected well beyond the formerly known invasive distribution and at the outward end of some transects, suggesting that we did not reach the actual invasion front in these parts of the range. The landscape variables that best predicted the presence of X. laevis in a pond were topographic wetness index and grass cover within a buffer of 250 m. Higher values of both topographic wetness index and grass cover were negativelyrelated to the occurrence probability. The effects of these two variables more likely to reflect dispersal behaviour than habitat preferences at the pond scale.6. By combining the high detection probability of eDNA survey techniques and a landscape ecology approach, we may gain valuable insight into the colonisation process of water bodies by elusive invasive species. Such information is crucial to prevent access to specific sites and locate invasion front areas where connectivity can be disrupted, thus increasing the effectiveness of management countermeasures. K E Y W O R D Sdispersal, invasion dynamics, landscape analysis, topographic wetness index, Xenopus laevis | 503 VIMERCATI ET Al.

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Section: Introductionmentioning

confidence: 85%

Assessing the effect of landscape features on pond colonisation by an elusive amphibian invader using environmental DNA

et al. 2019

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“…To date, knowledge about the context dependence of invasion impacts is rather fragmentary, and a better prediction of impacts requires considerable further research (Kumschick et al 2015). Moreover, uncertainty about the alien status of a species may exist and may result in unknown invasion impacts of cryptic alien species , Jarić et al 2019.…”

Section: Context Dependence Of Environmental Impactsmentioning

confidence: 99%

Assessing the environmental impacts of invasive alien plants: a review of assessment approaches

Bartz¹,

Kowarik²

2019

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111

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Assessing the impacts of alien plant species is a major task in invasion science and vitally important for supporting invasion-related policies. Since 1993, a range of assessment approaches have been developed to support decisions on the introduction or management of alien species. Here we review the extent to which assessments (27 approaches) appraised the following: (i) different types of environmental impacts, (ii) context dependence of environmental impacts, (iii) prospects for successful management, and (iv) transparency of assessment methods and criteria, underlying values and terminology. While nearly all approaches covered environmental effects, changes in genetic diversity and the incorporation of relevant impact parameters were less likely to be included. Many approaches considered context dependence by incorporating information about the actual or potential range of alien species. However, only a few went further and identified which resources of conservation concern might be affected by specific alien plant species. Only some approaches acknowledged underlying values by distinguishing negative from positive impacts or by considering the conservation value of affected resources. Several approaches directly addressed the feasibility of management, whereas relevant factors such as availability of suitable management methods were rarely considered. Finally, underlying values were rarely disclosed, and definitions of value-laden or controversial terms were often lacking. We conclude that despite important progress in assessing the manifold facets of invasion impacts, opportunities remain for further developing impact assessment approaches. These changes can improve assessment results and their acceptance in invasion-related environmental policies.

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“…Most studies have focused on pathogenic species – primarily plant-pathogenic fungi (for review, see Thakur et al 2019 ). Like many other aspects of microbial ecology, range expansion of microbes is poorly characterized due to their cryptic nature ( Jarić et al 2019 ). It is now clear that Baas-Becking’s classic microbial biogeographic hypothesis of “ Everything is everywhere: but the environment selects ” does not hold universally for microbes ( van der Gast 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Whole-genome sequencing from the New Zealand Saccharomyces cerevisiae population reveals the genomic impacts of novel microbial range expansion

Higgins

Grace

Lee

et al. 2020

G3 Genes|Genomes|Genetics

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Saccharomyces cerevisiae is extensively utilized for commercial fermentation, and is also an important biological model; however, its ecology has only recently begun to be understood. Through the use of whole-genome sequencing, the species has been characterized into a number of distinct subpopulations, defined by geographical ranges and industrial uses. Here, the whole-genome sequences of 104 New Zealand (NZ) S. cerevisiae strains, including 52 novel genomes, are analyzed alongside 450 published sequences derived from various global locations. The impact of S. cerevisiae novel range expansion into NZ was investigated and these analyses reveal the positioning of NZ strains as a subgroup to the predominantly European/wine clade. A number of genomic differences with the European group correlate with range expansion into NZ, including 18 highly enriched single-nucleotide polymorphism (SNPs) and novel Ty1/2 insertions. While it is not possible to categorically determine if any genetic differences are due to stochastic process or the operations of natural selection, we suggest that the observation of NZ-specific copy number increases of four sugar transporter genes in the HXT family may reasonably represent an adaptation in the NZ S. cerevisiae subpopulation, and this correlates with the observations of copy number changes during adaptation in small-scale experimental evolution studies.

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Crypticity in Biological Invasions

Cited by 79 publications

References 76 publications

Assessing the effect of landscape features on pond colonisation by an elusive amphibian invader using environmental DNA

Assessing the effect of landscape features on pond colonisation by an elusive amphibian invader using environmental DNA

Assessing the environmental impacts of invasive alien plants: a review of assessment approaches

Whole-genome sequencing from the New Zealand Saccharomyces cerevisiae population reveals the genomic impacts of novel microbial range expansion

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