Asexuality and species invasion

Founding populations of non-native species typically contain a small subset of their home range populations, exhibiting a reduced subset of their genetic diversity. Many of these non-native species predominantly, or even solely, engage in asexual reproduction, but it is unclear whether asexual reproduction is linked with species invasion. We used a systematic review of peer-reviewed literature to investigate whether species with reproductive polymorphisms are more often asexual in their invaded than native range. We also investigated whether genetic diversity was higher in home than invaded ranges. We found 219 relevant studies, and those showed that asexual reproduction is three times more common in invaded than home ranges, and higher genetic diversity is 20 times more common in home than invaded ranges for these organisms (this difference highest in the more recently introduced species). Hence, asexual reproduction appears associated with species invasion. Whereas asexual reproductio..., We followed the recommendations for reporting items for systematic review as outlined by Moher et al. (2009). We generated a list of peer-reviewed journal articles that reported results for asexual reproduction in non-native species using the search terms “non-native” or “invasive” with “asexual”, “apomixis,” “cleistogamy,” “self-fertilization,” “clone” or “parthenogenesis” in September-December 2020. We did not place date or language restrictions. We used the default search engine settings for the Science Citation Index Expanded (1970-present) but excluded the Social Sciences and Arts & Humanities citation indices. We also refined the search by “article.” We removed 70 results that were replicates between search terms. The search produced a master list of 409 articles. Graduate students (at least two students per article) examined each journal article and screened out reviews, meta-analyses, simulations, non-English papers, and papers with multiple species, leaving 132 papers for a..., , # Data from: Asexuality and species invasion

**File name: Data.csv**

Variables:

Ident = identifying line

Confidence = weighted confidence level (0 = not appropriate for the review; 1 = requires some inference to meet review objectives; 2 = mostly meets review objectives and 3 = meets review objectives)

Common = common name

Scientific = scientific name

First.report = first reported as an invader

Type = type of organism (Plant, invertebrate, fish, mammal, pathogen, other)

Invaded.rage = invaded range Origin.range = range of origin Origin = data for home or invaded range populations Reproduction = mode (asexual, sexual, both)

Higher.genetic = in which population (home or invaded) is genetic diversity higher (1,0) Polyploid = are they reported as polyploid?

Data.set = systematic review, 100 worst invaders or both

Missing data: NA