Foraging behaviour and invasiveness: do invasive <i>Gambusia</i> exhibit higher feeding rates and broader diets than their noninvasive relatives?

Rehage, Jennifer S.; Barnett, Beverly K.; Sih, Andrew

doi:10.1111/j.1600-0633.2005.00109.x

Cited by 91 publications

(74 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Whilst many studies ensure that prey are not totally depleted during experiments by supplying the prey in excess (e.g. Rehage et al 2005;Veiga et al 2011), functional response types can still not be revealed by such studies because, with only one prey density examined, the shape of the curve is not known. Thus, impacts on prey populations in terms of the functional response type are not discernible from 'snapshot' study designs.…”

Section: A Comparative Functional Response Framework For Invasion Ecomentioning

confidence: 99%

Advancing impact prediction and hypothesis testing in invasion ecology using a comparative functional response approach

et al. 2013

View full text Add to dashboard Cite

Invasion ecology urgently requires predictive methodologies that can forecast the ecological impacts of existing, emerging and potential invasive species. We argue that many ecologically damaging invaders are characterised by their more efficient use of resources. Consequently, comparison of the classical 'functional response' (relationship between resource use and availability) between invasive and trophically analogous native species may allow prediction of invader ecological impact. We review the utility of species trait comparisons and the history and context of the use of functional responses in invasion ecology, then present our framework for the use of comparative functional responses. We show that functional response analyses, by describing the resource use of species over a range of resource availabilities, avoids many pitfalls of 'snapshot' assessments of resource use. Our framework demonstrates how comparisons of invader and native functional responses, within and between Type II and III functional responses, allow testing of the likely population-level outcomes of invasions for affected species. Furthermore, we describe how recent studies support the predictive capacity of this method; for example, the invasive 'bloody red shrimp' Hemimysis anomala shows higher Type II functional responses than native mysids and this corroborates, and could -013-0550-8 have predicted, actual invader impacts in the field. The comparative functional response method can also be used to examine differences in the impact of two or more invaders, two or more populations of the same invader, and the abiotic (e.g. temperature) and biotic (e.g. parasitism) context-dependencies of invader impacts. Our framework may also address the previous lack of rigour in testing major hypotheses in invasion ecology, such as the 'enemy release' and 'biotic resistance' hypotheses, as our approach explicitly considers demographic consequences for impacted resources, such as native and invasive prey species. We also identify potential challenges in the application of comparative functional responses in invasion ecology. These include incorporation of numerical responses, multiple predator effects and trait-mediated indirect interactions, replacement versus non-replacement study designs and the inclusion of functional responses in risk assessment frameworks. In future, the generation of sufficient case studies for a meta-analysis could test the overall hypothesis that comparative functional responses can indeed predict invasive species impacts.Biol Invasions (2014) 16:735-753 DOI 10.1007/s10530

show abstract

Section: A Comparative Functional Response Framework For Invasion Ecomentioning

confidence: 99%

Advancing impact prediction and hypothesis testing in invasion ecology using a comparative functional response approach

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Available evidence suggests that the most successful fish invaders appear to be piscivorous or omnivorous and ecological generalists (Kolar & Lodge 2001, Unmack & Fagan 2004. Such predation strategies likely aid invasive species during establishment in novel environments where the food base may differ from the species' natural range (Grabowska & Grabowski 2005, Pine et al 2005, providing an abundance of diverse potential prey resources that would only rarely be limiting (Grabowska & Grabowski 2005, Rehage et al 2005. The generalist feeding strategy that we have documented for Pterois volitans indicates one potential mechanism for the success of this invasive piscivore.…”

mentioning

confidence: 98%

Diet of invasive lionfish on hard bottom reefs of the Southeast USA: insights from stomach contents and stable isotopes

Muñ̃oz¹,

Currin²,

Whitfield³

2011

Mar. Ecol. Prog. Ser.

118

View full text Add to dashboard Cite

The Indo-Pacific lionfish (Pterois volitans and P. miles complex) has become widely established along the United States Southeast coast and continues to colonize the Caribbean, yet its biology and ecology is only beginning to be understood. We used stomach contents and stable isotope analyses to determine the diet of lionfish in the warm-temperate hard bottom reef community in the Southeast US Atlantic Ocean. During June to August 2004 and 2006, we collected lionfish with SCUBA from 18 different locations in Onslow Bay, North Carolina, at depths of 30 to 45 m. In 2006, we also conducted visual surveys of small benthic fishes to estimate the abundances of potential prey. Analyses of stomach contents (n = 183) and stable isotopes (n = 115) suggest a generalist carnivorous diet, and prey categories were predominately fish (~99% of total volume) from 16 families. Major differences in the importance of prey occurred between years. Serranidae and Scaridae dominated the diet in 2004, while Haemulidae and Carangidae were important in 2006. Analyses of visual prey surveys did not reveal specialization on particular prey taxa but instead suggest that prey are consumed in relation to their local abundance. Given current theory pertaining to invasive species impacts, the expanding lionfish distribution, and observations that lionfish appear capable of settling to many different habitat types, the overall pattern of generalist piscivory emerging from these data indicates the potential for significant impacts to the invaded community.KEY WORDS: Marine invasion · Rocky reef · Scorpaenidae · Warm temperate · Continental shelf · Piscivory · Diet · Prey Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 432: [181][182][183][184][185][186][187][188][189][190][191][192][193] 2011 Along the United States Southeast Atlantic coast, and in Bermuda and the Bahamas, red lionfish Pterois volitans and devil firefish P. miles are now established and are continuing to expand their range in the Caribbean , Schofield 2009). These 2 species are nearly morphologically identical and 93% of specimens sampled from the Atlantic as well as North Carolina were P. volitans (Hamner et al. 2007), so hereafter we refer to invasive specimens collectively as lionfish or P. volitans. Native to the subtropical and tropical regions of the South Pacific, Indian Ocean, and the Red Sea, lionfish are venomous predators whose popularity in the aquarium trade may have contributed to their introduction to Atlantic waters (Whitfield et al. 2002, Semmens et al. 2004, Ruiz-Carus et al. 2006. Classified as demersal mesocarnivores together with groupers (Serranidae) and snappers (Lutjanidae) (Caillet et al. 1986), lionfish are believed to be opportunistic predators that consume fish, shrimp, and crabs in their native range (Hiatt & Strasburg 1960, Harmelin-Vivien & Bouchon 1976, Sano et al. 1984. However, until their recent invasion of the Atlantic and Caribbean, their biology and ecology were poorly understood bey...

show abstract

“…Identifying conditions that allow a successful invasion therefore represents a crucial research area. One approach has been to identify characteristics that predispose a species to becoming a successful invader (Kolar & Lodge 2001;Marchetti et al 2004;Rehage et al 2005a). Because invasion is a multi-stage process (introduction, spread, establishment, growth to high density and high impact on an invaded community; Lodge 1993), different characteristics probably affect a species's ability to complete each transition successfully.…”

Section: Introductionmentioning

confidence: 99%

Personality traits and dispersal tendency in the invasive mosquitofish (Gambusia affinis)

et al. 2010

View full text Add to dashboard Cite

Ecological invasions, where non-native species spread to new areas, grow to high densities and have large, negative impacts on ecological communities, are a major worldwide problem. Recent studies suggest that one of the key mechanisms influencing invasion dynamics is personality-dependent dispersal: the tendency for dispersers to have a different personality type than the average from a source population. We examined this possibility in the invasive mosquitofish (Gambusia affinis). We measured individual tendencies to disperse in experimental streams and several personality traits: sociability, boldness, activity and exploration tendency before and three weeks after dispersal. We found that mosquitofish display consistent behavioural tendencies over time, and significant positive correlations between all personality traits. Most notably, sociability was an important indicator of dispersal distance, with more asocial individuals dispersing further, suggesting personality-biased dispersal on an invasion front. These results could have important ecological implications, as invasion by a biased subset of individuals is likely to have different ecological impacts than invasion by a random group of colonists.

show abstract

Foraging behaviour and invasiveness: do invasive Gambusia exhibit higher feeding rates and broader diets than their noninvasive relatives?

Cited by 91 publications

References 64 publications

Advancing impact prediction and hypothesis testing in invasion ecology using a comparative functional response approach

Advancing impact prediction and hypothesis testing in invasion ecology using a comparative functional response approach

Diet of invasive lionfish on hard bottom reefs of the Southeast USA: insights from stomach contents and stable isotopes

Personality traits and dispersal tendency in the invasive mosquitofish (Gambusia affinis)

Contact Info

Product

Resources

About