Search USGS⌕ Search
Home/Archive/USGS

USGS · 1003497

Risk assessment and screening for potentially invasive fishes

C. Kolar
View original source ↗Export metadata ↓

Abstract

Preventing the introduction of potentially invasive species is becoming more important as this worldwide problem continues to grow. The ability to predict the identity or range of potential invaders could influence regulatory decisions and help to optimally allocate resources to deal with ongoing invasions. One screening tool presented here, using species life history and environmental tolerances to identify potential invaders similar to past invaders, can be used to predict potential invading species. Another screening tool, genetic algorithms, can be used to predict the potential range of an invading species. Use and further development of tools such as these, that are quantitative and relatively transparent, would give managers and other decision makers more information for making better-informed decisions.

Explore related subjects

New Zealand Journal of Marine and Freshwater ResearchArticle

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

C. Kolar. 2004. Risk assessment and screening for potentially invasive fishes. https://doi.org/10.1080/00288330.2004.9517247

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related USGS reports

USGS2016

Effect of body size and temperature on respiration of Galaxias maculatus (Pisces: Galaxiidae)

Body mass and temperature are primary determinants of metabolic rate in ectothermic animals. Oxygen consumption of post-larval Galaxias maculatus was measured in respirometry trials under different temperatures (5–21°C) and varying body masses (0.1–>1.5 g) spanning a relevant range of thermal conditions and sizes. Specific respiration rates ( R in g O 2 g −1 d −1 ) declined as a power function of body mass and increased exponentially with temperature and was expressed as: R = 0.0007 * W −0.31 * e 0.13 * T . The ability of this model to predict specific respiration rate was evaluated by comparing observed values with those predicted by the model. Our findings suggest that the respiration rate of G. maculatus is the result of multiple interactive processes (intrinsic and extrinsic factors) that modulate each other in ‘meta-mechanistic’ ways; this would help to explain the species’ ability to undergo the complex ontogenetic habitat shifts observed in the lakes of the Andean Patagonic range.

New Zealand Journal of Marine and Freshwater Resea↗