Difference in seasonal activity pattern between non‐native and native ants in subtropical forest of Okinawa Island, Japan

Suwabe, Mayuko; Ohnishi, Hitoshi; Kikuchi, Toru; Kawara, Kengo; Tsuji, Kazuki

doi:10.1007/s11284-008-0534-9

Cited by 23 publications

(27 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Competition intensity can vary over time because of temporal variation in resource limitation (Schmitt & Holbrook 1986; Hoset & Steen 2007). If competing species exhibit differing competitive abilities under contrasting environmental conditions, such temporal variations may prevent competitive exclusion (Lauer & Spacie 2004; Descamps‐Julien & Gonzalez 2005; Suwabe et al. 2009).…”

Section: Discussionmentioning

confidence: 99%

Ice-cover effects on competitive interactions between two fish species

Helland¹,

Finstad

Forseth

et al. 2010

Journal of Animal Ecology

109

View full text Add to dashboard Cite

Summary 1.Variations in the strength of ecological interactions between seasons have received little attention, despite an increased focus on climate alterations on ecosystems. Particularly, the winter situation is often neglected when studying competitive interactions. In northern temperate freshwaters, winter implies low temperatures and reduced food availability, but also strong reduction in ambient light because of ice and snow cover. Here, we study how brown trout [Salmo trutta (L.)] respond to variations in ice-cover duration and competition with Arctic charr [Salvelinus alpinus (L.)], by linking laboratory-derived physiological performance and field data on variation in abundance among and within natural brown trout populations. 2. Both Arctic charr and brown trout reduced resting metabolic rate under simulated ice-cover (darkness) in the laboratory, compared to no ice (6-h daylight). However, in contrast to brown trout, Arctic charr was able to obtain positive growth rate in darkness and had higher food intake in tank experiments than brown trout. Arctic charr also performed better (lower energy loss) under simulated ice-cover in a semi-natural environment with natural food supply. 3. When comparing brown trout biomass across 190 Norwegian lakes along a climate gradient, longer ice-covered duration decreased the biomass only in lakes where brown trout lived together with Arctic charr. We were not able to detect any effect of ice-cover on brown trout biomass in lakes where brown trout was the only fish species. 4. Similarly, a 25-year time series from a lake with both brown trout and Arctic charr showed that brown trout population growth rate depended on the interaction between ice breakup date and Arctic charr abundance. High charr abundance was correlated with low trout population growth rate only in combination with long winters. 5. In conclusion, the two species differed in performance under ice, and the observed outcome of competition in natural populations was strongly dependent on duration of the ice-covered period. Our study shows that changes in ice phenology may alter species interactions in Northern aquatic systems. Increased knowledge of how adaptations to winter conditions differ among coexisting species is therefore vital for our understanding of ecological impacts of climate change.

show abstract

Section: Discussionmentioning

confidence: 99%

Ice-cover effects on competitive interactions between two fish species

Helland¹,

Finstad

Forseth

et al. 2010

Journal of Animal Ecology

109

View full text Add to dashboard Cite

show abstract

“…Eguchi (2008) observed that the species seems to inhabit open lands and forest edges, and has probably expanded its range in some part as the result of human commerce. Pheidole parva was one of the most commonly collected ants in a myrmecological study of agricultural fields in Vietnam and Okinawa (Anh et al 2010; Suwabe et al 2009). A recent study of 18 structure invading pest ants of healthcare facilities in Singapore found Pheidole parva the most frequently encountered species (Man and Lee 2012).…”

Section: Species Accountsmentioning

confidence: 99%

Introduced Pheidole of the world: taxonomy, biology and distribution

Sarnat¹,

Fischer²,

Guénard

et al. 2015

View full text Add to dashboard Cite

The objective of this study is to provide a detailed taxonomic resource for identifying and studying ants in the genus Pheidole that have established beyond their native ranges. There is an increasing need for systematists to study taxa of specific concern to 21st century environmental, food security and public health challenges. Systematics has an important role to play in both the theoretical and applied disciplines of invasion biology. Few invaders impact terrestrial ecosystems more than ants. Among the world’s 100 worst invasive species is the cosmopolitan and highly destructive Pheidole megacephala (Fabricius). Accurate identification of Pheidole megacephala is imperative for the success of screening, management and eradication programs designed to protect native ecosystems from the impacts of this destructive species. However, accurate identification of Pheidole species is difficult because of their taxonomic diversity, dimorphic worker caste and lack of taxonomic resources. Illustrated keys are included, along with the taxonomic history, taxonomic diagnoses, biological notes and risk statements for the 14 most invasive members of the genus. Global distribution maps based on over 14,000 specimen and literature records are presented for each species. These results of this work will facilitate identification of pest species, determination of climatic and habitat requirements, discovery of pest origins, horizon scanning and assessment of invasion pathways. The following new synonym is proposed, with the senior synonym listed first and the junior synonyms in parentheses: Pheidole indica Mayr (= Pheidole teneriffana Forel, and its synonyms Pheidole taina Aguayo and Pheidole voeltzkowii Forel). Pheidole navigans Forel, stat. rev., stat. n. is removed from synonymy and elevated to species rank. It is proposed that records of Pheidole moerens Forel outside of the Mesoamerica and the Caribbean refer instead to Pheidole navigans or other heterospecific taxa in the Pheidole flavens species complex. We propose that the names Pheidole anastasii Emery and Pheidole floridana Emery have been widely misapplied to North American outdoor records of Pheidole bilimeki Mayr. It is suggested that the synonymy of Pheidole lauta Wheeler be transferred from Pheidole floridana Emery to Pheidole bilimeki Mayr.

show abstract

“…Because they are small, numerous and colonial, they can rapidly colonize a new habitat. One of the most important factors limiting their distribution is climate (Roura-Pascual et al 2011;Dunn et al 2009;Sanders et al 2007;Jenkins et al 2011) because many features of their biology are temperature or humidity dependent, such as foraging (Brightwell et al 2010), oviposition rates (Abril et al 2008), survival (Walters and Mackay 2004), colony dynamics, the structure of foraging networks (Heller and Gordon 2006) and dominance over other species (Suwabe et al 2009). It is therefore crucial to assess their invasive potential under climate change.…”

Section: Introductionmentioning

confidence: 99%

Global warming may freeze the invasion of big-headed ants

2012

View full text Add to dashboard Cite

Climate change and invasive species are two of the most serious threats of biodiversity. A general concern is that these threats interact, and that a globally warming climate could favour invasive species. In this study we investigate the invasive potential of one of the ''100 of the world's worst invasive species'', the big-headed ant Pheidole megacephala. Using ecological niche models, we estimated the species' potential suitable habitat in 2020, 2050 and 2080. With an ensemble forecast obtained from five different modelling techniques, 3 Global Circulation Models and 2 CO 2 emission scenarios, we generated world maps with suitable climatic conditions and assessed changes, both qualitatively and quantitatively. Almost one-fifth (18.5 %) of the landmass currently presents suitable climatic conditions for P. megacephala. Surprisingly, our results also indicate that the invasion of big-headed ants is not only unlikely to benefit from climate change, but may even suffer from it. Our projections show a global decrease in the invasive potential of big-headed ants as early as 2020 and becoming even stronger by 2080 reaching a global loss of 19.4 % of area with favourable climate.The decrease is observable in all 6 broad regions, being greatest in the Oceania and lowest in Europe.

show abstract

Difference in seasonal activity pattern between non‐native and native ants in subtropical forest of Okinawa Island, Japan

Cited by 23 publications

References 20 publications

Ice-cover effects on competitive interactions between two fish species

Ice-cover effects on competitive interactions between two fish species

Introduced Pheidole of the world: taxonomy, biology and distribution

Global warming may freeze the invasion of big-headed ants

Contact Info

Product

Resources

About