Genomic pedigree reconstruction identifies predictors of mating and reproductive success in an invasive vertebrate

Ecology and Evolution
By: , and 

Links

Abstract

The persistence of an invasive species is influenced by its reproductive ecology, and a successful control program must operate on this premise. However, the reproductive ecology of invasive species may be enigmatic due to factors that also limit their management, such as cryptic coloration and behavior. We explored the mating and reproductive ecology of the invasive Brown Treesnake (BTS: Boiga irregularis) by reconstructing a multigenerational genomic pedigree based on 654 single nucleotide polymorphisms for a geographically closed population established in 2004 on Guam (N = 426). The pedigree allowed annual estimates of individual mating and reproductive success to be inferred for snakes in the study population over a 14‐year period. We then employed generalized linear mixed models to gauge how well phenotypic and genomic data could predict sex‐specific annual mating and reproductive success. Average snout–vent length (SVL), average body condition index (BCI), and trappability were significantly related to annual mating success for males, with average SVL also related to annual mating success for females. Male and female annual reproductive success was positively affected by SVL, BCI, and trappability. Surprisingly, the degree to which individuals were inbred had no effect on annual mating or reproductive success. When juxtaposed with current control methods, these results indicate that baited traps, a common interdiction tool, may target fecund BTS in some regards but not others. Our study emphasizes the importance of reproductive ecology as a focus for improving BTS control and promotes genomic pedigree reconstruction for such an endeavor in this invasive species and others.

Study Area

Publication type Article
Publication Subtype Journal Article
Title Genomic pedigree reconstruction identifies predictors of mating and reproductive success in an invasive vertebrate
Series title Ecology and Evolution
DOI 10.1002/ece3.5694
Volume 9
Issue 20
Year Published 2019
Language English
Publisher Wiley
Contributing office(s) Fort Collins Science Center
Description 15 p.
First page 11863
Last page 11877
Country Guam
Google Analytics Metrics Metrics page
Additional publication details