Bactrocera dorsalis, an invasive fruit fly species in Mauritius

Sookar, P.; Patel, Nandita A; Ramkalawon, P.

doi:10.17660/th2021/76.6.2

Cited by 4 publications

(9 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the phylogenetic reconstruction might point toward colonization of Mauritius from Réunion, the more derived position of the Mauritian population in the tree topology might also be explained by the later sampling date of Mauritius compared with Réunion (2021 and 2019, respectively). Furthermore, a surveillance network with methyl eugenol traps has been installed on Réunion island since 2013, and traps were checked every 2 weeks; the first B. dorsalis individual was detected in May 2017 on Réunion (Moquet et al, 2021 ), whereas it was detected in 2015 on Mauritius (Sookar et al, 2020 ). The ROH analysis revealed that populations on the Mascarene islands are less impacted by a bottleneck than populations on other Indian Ocean islands.…”

Section: Discussionmentioning

confidence: 99%

“…Models for a particular horticultural pest such as the one developed in this research can then be extrapolated to other organisms that are similarly associated with the same crops. Moreover, looking at infestation rates and host range of the invasive B dorsalis populations from the Mascarenes (Moquet et al, 2021 ; Sookar et al, 2020 ) compared with the ones from Madagascar or Comoros (Hassani et al, 2016 ; Rasolofoarivao et al, 2022 ) it seems that the Mascarenes populations have slightly different ecological parameters with a broader host range and higher infestation rates, highlighting the importance of preventive measures for pest control.…”

Section: Discussionmentioning

confidence: 99%

“…In 2013, the species was recorded again, but its re‐occurrence was soon followed by a second eradication (Sookar & Deguine, 2016 ). In 2015, B. dorsalis was trapped for the third time in Mauritius, and no large‐scale eradication programs have been pursued since then (Sookar et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bactrocera dorsalis in the Indian Ocean: A tale of two invasions

Deschepper

Vanbergen

Zhang

et al. 2022

Evolutionary Applications

View full text Add to dashboard Cite

An increasing number of invasive fruit fly pests are colonizing new grounds. With this study, we aimed to uncover the invasion pathways of the oriental fruit fly, Bactrocera dorsalis into the islands of the Indian Ocean. By using genome-wide SNP data and a multipronged approach consisting of PCA, ancestry analysis, phylogenetic inference, and kinship networks, we were able to resolve two independent invasion pathways. A western invasion pathway involved the stepping-stone migration of B. dorsalis from the east African coast into the Comoros, along Mayotte and into Madagascar with a decreasing genetic diversity. The Mascarene islands (Reunion and Mauritius), on the contrary, were colonized directly from Asia and formed a distinct cluster. The low nucleotide diversity suggests that only a few genotypes invaded the Mascarenes. The presence of many long runs of homozygosity (ROH) in the introduced populations is indicative of population bottlenecks, with evidence of a more severe bottleneck for populations along the western migration pathway than on the Mascarene islands. More strict phytosanitary regulations are recommended in order to prevent the further spread of B. dorsalis.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Bactrocera dorsalis in the Indian Ocean: A tale of two invasions

Deschepper

Vanbergen

Zhang

et al. 2022

Evolutionary Applications

View full text Add to dashboard Cite

show abstract

“…These three species currently coexist in several parts of the world. F. arisanus was introduced in many countries for tephritid biological control (Mohamed et al, 2016), and these two Bactrocera species are major invasive pest species both present in Sudan, Pakistan, Mauritius, and La Réunion (Abro, 2020; Mahmoud, Abdellah, et al, 2020; Moquet et al, 2021; Sookar et al, 2021). Furthermore, their distribution overlap could increase if we consider climate change and their potential future distribution area, which has been modeled by several authors (De Villiers et al, 2015; Mahmoud, Mohamed, et al, 2020; Ni et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…B. zonata is the dominant species in Sudan , while Bactrocera dorsalis is the dominant species in La Réunion and Mauritius Sookar et al, 2021). The outcome of the competition is modulated by factors such as climatic tolerance.…”

Section: Introductionmentioning

confidence: 99%

Tri‐trophic interactions among Fopius arisanus, Tephritid species and host plants suggest apparent competition

Moquet

Jobart

Fontaine³

et al. 2023

Ecology and Evolution

View full text Add to dashboard Cite

When several polyphagous herbivore species share a parasitoid, the tri-trophic interaction networks can be difficult to predict. In addition to direct effects, the parasitoid may influence the herbivore community by mediating indirect interactions among hosts. The plant species can also modulate the parasitoid preference for a specific host. One of the indirect effects is apparent competition, a negative interaction between individuals as a result of the action of shared natural enemies. Here, we focus on the interactions between the parasitoid Fopius arisanus (Braconidae) and two generalist fruit fly pests: Bactrocera dorsalis and Bactrocera zonata (Tephritidae). This parasitoid was introduced into La Réunion in 2003 to control populations of B. zonata and can also interact with B. dorsalis since its invasion in 2017. Our main objective is to characterize the tri-trophic interactions between F. arisanus, fruit fly and host plant species. We developed a long-term field database of fruit collected before and after the parasitoid introduction and after the B. dorsalis invasion in order to compare parasitism rate and fruit fly infestation for the different periods. In laboratory assays, we investigated how the combination of fruit fly species and fruit can influence the preference of F. arisanus. In the field, before the invasion of B. dorsalis, the parasitism rate of F. arisanus was low and had a little impact on the fruit fly infestation rate. After the B. dorsalis invasion, we observed an increase in parasitism rate from 5% to 17%. A bioassay showed that females of F. arisanus could discriminate between eggs of different fruit fly and host plant species. The host plant species preference changed in relation to the fruit fly species inoculated. Field observations and laboratory experiments suggest the possible existence of apparent competition between B. dorsalis and B. zonata via F. arisanus.

show abstract

A study on fruit fly host range reveals the low infestation rate of Bactrocera dorsalis (Tephritidae) in Mayotte

Moquet,

Dupin,

Maigné

et al. 2024

Agri and Forest Entomology

View full text Add to dashboard Cite

The oriental fruit fly (Bactrocera dorsalis) is one of the world's most invasive and polyphagous fruit pests. It causes severe damage throughout its range and can devastate the entire fruit harvest in unprotected orchards. In 2007, B. dorsalis was detected in Mayotte, where it now ranks ninth on the list of fruit fly species of economic importance. This tropical island is a good study area to analyse the host range of B. dorsalis and its interactions with other resident fruit fly species. Two field campaigns were carried out from 2012 to 2014 and from 2019 to 2021. We collected fruit from all over the island in cultivated and non‐cultivated areas and compared the infestation rates between the two periods. We detected six fruit fly species, including the common species Dacus ciliatus, Neoceratitis cyanescens, Ceratitis capitata, B. dorsalis and two rarer species, Dacus etiennellus and Trirhithrum nigerrimum. The most surprising result was the low occurrence of B. dorsalis, with only seven host plant species identified out of a total of 84 plant species. Infestation rates were low for these host plant species, even in the case of mango (11.71 flies/kg) and Indian almond (0.97 fly/kg), which are considered to be major host plants of B. dorsalis. Bactrocera dorsalis seems to have a lower impact in Mayotte than in other parts of the world. We discuss the possible causes of the weak infestation rates observed, which could provide the key to regulating the species on the island.

show abstract

Bactrocera dorsalis, an invasive fruit fly species in Mauritius

Cited by 4 publications

References 14 publications

Bactrocera dorsalis in the Indian Ocean: A tale of two invasions

Bactrocera dorsalis in the Indian Ocean: A tale of two invasions

Tri‐trophic interactions among Fopius arisanus, Tephritid species and host plants suggest apparent competition

A study on fruit fly host range reveals the low infestation rate of Bactrocera dorsalis (Tephritidae) in Mayotte

Contact Info

Product

Resources

About