Risk of maritime introduction of plague from Madagascar to Mayotte

Rahelinirina, Soanandrasana; Harimalala, Mireille Aurélie; Margueron, Thomas; Ramihangihajason, Tojo; Mansotte, F.; Rajerison, Minoarisoa; Pagès, Frédéric; Boyer, Sébastien

doi:10.1016/j.actatropica.2018.07.029

Cited by 5 publications

(5 citation statements)

References 12 publications

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“…In Kinshasa seaport and Kisangani river‐port (Democratic Republic of Congo), the four rodent species captured included the same three invasive species than those found here (Kaleme et al., 2011). Similarly, the four small mammal taxa mentioned in the seaports of Mahajanga (Madagascar) and Mayotte Island (Comores), included rats and mice, with R. norvegicus and R. rattus being the most dominant species in both locations (Rahelinirina et al., 2018). However, these surveys are either old (in the 1950s for the data from Cameroon) or based on much lower trapping effort and/or captures (for the data from DR Congo, Madagascar and Comores) than the present work.…”

Section: Discussionmentioning

confidence: 99%

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Maritime international trade and bioinvasions: A three‐year long survey of small mammals in Autonomous Port of Cotonou, Benin

Badou,

Missihoun,

Agbangla

et al. 2023

Journal of Applied Ecology

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International trade has been favouring the dissemination of a wide suite of invasive alien species. Upstream prevention through the monitoring of entry points is identified as an appropriate strategy to achieve control of bioinvasions and their consequences. Maritime transportation has been responsible for the introduction worldwide of exotic rodents that are major pests for crops and food stocks as well as reservoirs of many zoonotic pathogens. In order to limit further dissemination, the International Health Regulation constrains decisions makers and socio‐economic stakeholders to manage ship‐mediated import/export of rodents within seaports. Unfortunately, eco‐evolutionary insights into rodent introduction events that could guide preventive actions in seaports are very scarce. In order to bridge this gap, we here describe the results of a 3 year‐long survey of small mammals conducted in the Port of Cotonou, Benin. Our aim was to assess the spatiotemporal distribution, diversity and relative abundance of invasive and native rodents. 960 small mammal individuals were captured in nine within‐seaport sites. We found (i) a marked predominance of invasive species (84% of the individuals belonging to Mus musculus, Rattus rattus, R. norvegicus), (ii) with native species (i.e. Mastomys natalensis and the shrew Crocidura olivieri) essentially restricted to peripheral non‐industrial areas, as well as (iii) a fine‐scale spatial segregation stable over time between the invasive Norway rats and house mice on the one hand, and the black rats and shrews on the other hand. Furthermore, trapping before and after two successive rodent control campaigns indicates that they were ineffective and that subsequent rodent recolonisation occurred 6–12 months following intervention. Synthesis and applications. Our results are discussed in terms of ecological processes at play (e.g. interspecific interactions) and operational recommendations (e.g. assessment of proper eradication units, environmental modifications).

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Section: Discussionmentioning

confidence: 99%

“…Gatto‐Almeida et al., 2021; Kaleme et al., 2011; Song et al., 2003), pathogen detection (e.g. Castel et al., 2021; Kuo et al., 2017; Rahelinirina et al., 2018; Wang et al., 2022) or evaluation of damage‐associated costs (e.g. Dossou et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Maritime international trade and bioinvasions: A three‐year long survey of small mammals in Autonomous Port of Cotonou, Benin

Badou,

Missihoun,

Agbangla

et al. 2023

Journal of Applied Ecology

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“…However, outbreaks and sporadic cases continue to occur [3]. In recent years, cases of plague have been reported in the Democratic Republic of the Congo, Madagascar, and Peru [4,5]. The worst plague epidemic of the 21st century in Madagascar resulted in approximately 2400 cases and 200 deaths, causing global concern [6].…”

Section: Introductionmentioning

confidence: 99%

Spray-Dried Inhalable Powder Formulations of Gentamicin Designed for Pneumonic Plague Therapy in a Mouse Model

Zhu

Zhang

et al. 2022

Pharmaceutics

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Infection with Yersinia pestis (Y. pestis) may cause pneumonic plague, which is inevitably fatal without treatment. Gentamicin (GM), an aminoglycoside antibiotic, is a drug commonly used in the treatment of plague. However, it requires repeated intramuscular or intravenous administration. Pulmonary drug delivery is noninvasive, with the advantages of local targeting and reduced risk of systemic toxicity. In this study, GM powders were prepared using spray-drying technology. The powders displayed good physical and chemical properties and met the requirements for human pulmonary inhalation. The formulation of the powders was optimized using a 32 full factorial design. A formulation of 15% (w/w) of L-leucine was prepared, and the spray-drying process parameters using an inlet temperature of 120°C and a 15% pump rate were determined to produce the best powder. In addition, the optimized GM spray-dried powders were characterized in terms of morphology, crystallinity, powder fluidity, and aerodynamic particle size distribution analysis. In a mouse model of pneumonic plague, we compared the therapeutic effects among three administration routes, including subcutaneous injection, liquid atomization, and dry powder atomization. In conclusion, our data suggest that inhalation therapy with GM spray-dried powders is an effective treatment for pneumonic plague.

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“…In the Indian Ocean basin, transport of black rats has occurred over a long time frame (>4,000 years in north Africa, de Graaf and Black, 1981), in particular facilitated by a long history of human maritime movement around the western Indian Ocean and its major island groups (Tollenaere et al, 2010). Black rats have been implicated in extinction events in this region e.g., the Mascarene and Seychelles groups (Towns et al, 2006), as well as major impacts on human health through disease transmission, e.g., plague on Madagascar (Rahelinirina et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Genetic Insights Into the Introduction History of Black Rats Into the Eastern Indian Ocean

Thomson

Wiewel

Palmer³

et al. 2022

Front. Ecol. Evol.

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Islands can be powerful demonstrations of how destructive invasive species can be on endemic faunas and insular ecologies. Oceanic islands in the eastern Indian Ocean have suffered dramatically from the impact of one of the world’s most destructive invasive species, the black rat, causing the loss of endemic terrestrial mammals and ongoing threats to ground-nesting birds. We use molecular genetic methods on both ancient and modern samples to establish the origins and minimum invasion frequencies of black rats on Christmas Island and the Cocos-Keeling Islands. We find that each island group had multiple incursions of black rats from diverse geographic and phylogenetic sources. Furthermore, contemporary black rat populations on these islands are highly admixed to the point of potentially obscuring their geographic sources. These hybridisation events between black rat taxa also pose potential dangers to human populations on the islands from novel disease risks. Threats of ongoing introductions from yet additional geographic sources is highlighted by genetic identifications of black rats found on ships, which provides insight into how recent ship-borne human smuggling activity to Christmas Island can negatively impact its endemic species.

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Risk of maritime introduction of plague from Madagascar to Mayotte

Cited by 5 publications

References 12 publications

Maritime international trade and bioinvasions: A three‐year long survey of small mammals in Autonomous Port of Cotonou, Benin

Maritime international trade and bioinvasions: A three‐year long survey of small mammals in Autonomous Port of Cotonou, Benin

Spray-Dried Inhalable Powder Formulations of Gentamicin Designed for Pneumonic Plague Therapy in a Mouse Model

Genetic Insights Into the Introduction History of Black Rats Into the Eastern Indian Ocean

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