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Hill, Mike; Holm, Katy; Vel, Terence; Shah, Nirmal; Matyot, Pat

doi:10.1023/a:1024151630204

Cited by 71 publications

(9 citation statements)

References 17 publications

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“…Despite its documented ability to rapidly cover large areas in high densities under optimal conditions (Hill et al 2003;O'Dowd et al 2003), the current distribution of A. gracilipes in the Vallée de Mai appears to be in a dynamic equilibrium and is restricted to the north-east of the reserve, with highest activity levels close to the firebreak and the visitor centre. This confined and relatively stable distribution invokes several possible explanations.…”

Section: Discussionmentioning

confidence: 97%

“…Their invasion is of concern to conservationists due to their broad range of impacts (e.g., Holway et al 2002;O'Dowd et al 2003;Lach and Hooper-Bui 2010) and the difficulties of eradicating them once established (Silverman and Brightwell 2008;Hoffmann et al 2011). Impacts of invasive ants can include direct effects such as displaced vertebrate (Feare 1999;Holway et al 2002 and references therein), nonant invertebrate (Lubin 1984;Hill et al 2003;Causton et al 2006), and ant species (Walker 2006;Hoffmann and Saul 2010;Roura-Pascual et al 2010), and indirect effects on key ecological functions such as frugivory (Davis et al 2010), pollination and seed dispersal (Hansen and Müller 2009), and seedling recruitment and litter breakdown in a forest ecosystem (O'Dowd et al 2003). The yellow crazy ant Anoplolepis gracilipes is ranked amongst the top 100 worst global invasive species (Lowe et al 2000) and is responsible for catastrophic ecological impacts on islands (O'Dowd et al 1999;O'Dowd et al 2003).…”

Section: Introductionmentioning

confidence: 99%

“…The species had spread to the neighbouring island of Praslin by 1975 and was eradicated from this island shortly afterwards (Haines and Haines 1978a, b). Since then, despite control measures on Mahé, its range across the Seychelles islands has expanded and, by 2000, the species occurred on nine of the central islands, including Praslin (Hill et al 2003).…”

Section: Introductionmentioning

confidence: 99%

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Invasion of yellow crazy ant Anoplolepis gracilipes in a Seychelles UNESCO palm forest

Kaiser‐Bunbury¹,

Cuthbert²,

Fox³

et al. 2014

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The mature palm forest of the Vallée de Mai, a UNESCO World Heritage Site, on the Seychelles island of Praslin, is a unique ecosystem containing many endemic species, including the iconic coco de mer palm Lodoicea maldivica. In 2009, the invasive yellow crazy ant Anoplolepis gracilipes was recorded for the first time within the palm forest, raising concern about its potential impacts on the endemic fauna. This research aimed to: (1) assess the current distribution and spread of A. gracilipes within the palm forest; (2) identify environmental variables that are linked to A. gracilipes distribution; and (3) compare endemic species richness and abundance in A. gracilipes invaded and uninvaded areas. Anoplolepis gracilipes was confined to the north-east of the site and remained almost stationary between April 2010 and December 2012, with isolated outbreaks into the forest. Infested areas had significantly higher temperature and humidity and lower canopy cover. Abundance and species richness of the endemic arboreal fauna were lower in the A. gracilipes invaded area. Molluscs were absent from the invaded area. The current restricted distribution of A. gracilipes in this ecosystem, combined with lower abundance of endemic fauna in the invaded area, highlight the need for further research to assess control measures and the possible role of biotic resistance to the invasion of the palm forest by A. gracilipes.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Invasion of yellow crazy ant Anoplolepis gracilipes in a Seychelles UNESCO palm forest

Kaiser‐Bunbury¹,

Cuthbert²,

Fox³

et al. 2014

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“…Negative impacts on native vegetation due to non-native ant–HPI associations have been documented from numerous island systems, including the Seychelles (Hill et al 2003), Christmas Island (O’Dowd et al 2003), and Mauritius (Hansen and Müller 2009). In addition to direct damage through their feeding, HPIs can potentially increase damage by chewing herbivores (Schuldt et al 2017) and act as vectors for numerous plant diseases (Weintraub and Beanland 2006), and their attending ants can disrupt pollination (Lach 2007; Hansen and Müller 2009) and seed dispersal (Davis et al 2010; Hansen and Müller 2009).…”

Section: Discussionmentioning

confidence: 99%

Landscape-level bird loss increases the prevalence of honeydew-producing insects and non-native ants

2018

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Bird exclusion experiments consistently show that birds exhibit strong top-down control of arthropods, including ants and the honeydew-producing insects (HPIs) that they tend. However, it remains unclear whether the results of these small-scale bird exclosure experiments can be extrapolated to larger spatial scales. In this study, we use a natural bird removal experiment to compare the prevalence of ants and HPIs between Guam, an island whose bird community has been extirpated since the 1980s due to the introduction of the brown tree snake, and two nearby islands (Rota and Saipan) that have more intact bird assemblages. Consistent with smaller-scale bird exclosure experiments, we show that (1) forest trees from Guam are significantly more likely to host HPIs than trees from Saipan and (2) ants are nearly four times as abundant on Guam than on both Saipan and Rota. The prevalence of HPIs varied slightly based on tree species identity, although these effects were not as strong as island-level effects associated with bird loss. Ant community composition differed between Guam and the other two islands. These results corroborate past observational studies showing increased spider densities on Guam and suggest that trophic changes associated with landscape-level bird extirpation may also involve alterations in the abundance of ants and HPIs. This study also provides a clear example of the strong indirect effects that invasive species can have on natural food webs.Electronic supplementary materialThe online version of this article (10.1007/s00442-018-4273-5) contains supplementary material, which is available to authorized users.

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“…Ketika spesies asing masuk kedalam habitat baru, daya rusaknya yang tinggi sering menyebabkan kehancuran habitat karena terjadinya monopolisasi lingkungan dan punahnya keanekaragaman lokal. Spesies yang memiliki sifat invasif dapat berperan menjadi faktor pembatas keberadaan spesies lain dalam lingkungan yang sama (Hill et al 2003).…”

Section: Pendahuluanunclassified

Agresi intraspesifik dan waktu penemuan makanan pada semut invasif Anoplolepis gracilipes di Kebun Raya Bogor

et al. 2016

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ABSTRAKInvasi biologi oleh semut Anoplolepis gracilipes Smith (Hymenoptera: Formicidae) dapat memberikan dampak negatif bagi organisme lain. Semut ini dapat membentuk superkoloni yang terdiri atas beberapa sarang dimana kekerabatan antar sarang masih dapat terdeteksi secara kimia oleh anggota superkoloni tersebut. Pada umumnya, agresi antar anggota superkoloni tidak terjadi, jikapun ada agresi intraspesifik terjadi antara semut pekerja yang berasal dari superkoloni yang berbeda. Tujuan penelitian ini adalah untuk mengetahui agresi intraspesifik dan waktu penemuan makanan yang terjadi pada A. gracilipes di Kebun RayaBogor (KRB). Agresi intraspesifik dihitung menggunakan tiga indeks agresi yang berbeda dengan melakukan uji agresi antar koloni yang berbeda. Penemuan sumberdaya diukur berdasarkan waktu yang diperlukan untuk menemukan umpan madu pada jarak yang diketahui. Pada tahun 2013, hasil pengamatan ditemukan 5 kelompok/gugus sarang yang terpisah secara spasial dan menempati kurang lebih 25% dari seluruh wilayah KRB. Hasil uji agresi menunjukkan bahwa koloni KRB1 secara signifikan lebih agresif terhadap koloni lain. Tidak adanya agresi intrakolonial antara tiga dari lima kelompok sarang yang diujikan menunjukkan bahwa ketiga kelompok sarang tersebut berasal dari superkoloni yang sama. Rata-rata A. gracilipes memerlukan kurang dari 1 jam untuk menemukan makanan pada plat umpan yang diletakkan sejauh 20 meter dari sarang. Kami menemukan 3 superkoloni A. gracilipes yang berasal dari 5 kelompok sarang yang terpisah di Kebun Raya Bogor. Kata kunci: indeks agresi, indeks mortalitas, Kebun Raya Bogor, superkoloni, Yellow Crazy Ant ABSTRACTWe studied the distribution of the Yellow Crazy Ant (Anoplolepis gracilipes) Smith (Hymenoptera: Formicidae) in Bogor Botanical Garden (BBG). Biological invasions by A. gracilipes can negatively impact other species. Individual nests of this ant can form supercolonies within which aggression is absent, intraspecific aggression occurs between workers from different supercolonies. The aim of this research was to study aggression between and resource discovery of different A. gracilipes supercolonies in BBG. Intraspecific aggression was calculated as three different aggression indices

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Untitled

Cited by 71 publications

References 17 publications

Invasion of yellow crazy ant Anoplolepis gracilipes in a Seychelles UNESCO palm forest

Invasion of yellow crazy ant Anoplolepis gracilipes in a Seychelles UNESCO palm forest

Landscape-level bird loss increases the prevalence of honeydew-producing insects and non-native ants

Agresi intraspesifik dan waktu penemuan makanan pada semut invasif Anoplolepis gracilipes di Kebun Raya Bogor

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