Abstract:The seasonal population density is informed for two epidemiologically important species of bloodsucking Tabanidae, Tabanus occidentalis Linnaeus and T. pungens Wiedemann, recorded at the Fernando de Noronha archipelago that was never connected to the continent. The two species are widespread in the Neotropical Region, have not been recorded from any other oceanic island, and have most likely been introduced accidentally in the archipelago. Tabanus occidentalis dominated the samples, encompassing 99.6% of the s… Show more
“…In other locations, such as the Fernando de Noronha Archipelago in Brazil, a signi cant number of male individuals of Tabanus occidentalis were captured using Malaise traps. Apparently, the collections at this speci c site were near the summit of the island and represented one of the best-preserved areas (Rafael et al 2021), contrary to Tiquibuzo, which exhibited vegetative patches and anthropogenic activity.…”
Section: Discussionmentioning
confidence: 91%
“…Malaise traps have demonstrated high e cacy in capturing female horse ies through ight interception, but not of males horse ies. This widely recognized phenomenon has been documented in numerous studies conducted in the world across different regions and latitudes (Krolow et al 2017;Herczeg et al 2018), with few exceptions (Rafael et al 2021). Other alternative methods, such as deploying light traps above the canopy, offer distinct advantages for capturing male horse ies (Krolow et al 2010), well as shiny black plastic oil traps (Krčmar 2013) and polarized re ection traps.…”
Male horseflies have low capture rates in Malaise traps, a widely documented pattern observed in numerous ecological studies. We present findings from a specific locality in Ecuador where a departure from this established pattern is observed. In this locality, males accounted for 59.14% of Tabanidae captures. The disruption in capture patterns observed using Malaise traps represents an uncommon feature in the scientific literature and during collections conducted over eight years in Ecuador. Despite the inherent limitations of Malaise traps in capturing male horseflies, it is possible that under specific conditions, such as the presence of optimal aggregation areas for horseflies, Malaise traps may enhance the capture efficiency of males. Additionally, we provide a detailed discussion on the disruption and disparity in capture sex proportions in Tabanidae, commonly reported in the scientific literature. Understanding these aspects of tabanid behavior is essential due to the outbreaks and deaths associated with trypanosomiasis infections in Ecuador.
“…In other locations, such as the Fernando de Noronha Archipelago in Brazil, a signi cant number of male individuals of Tabanus occidentalis were captured using Malaise traps. Apparently, the collections at this speci c site were near the summit of the island and represented one of the best-preserved areas (Rafael et al 2021), contrary to Tiquibuzo, which exhibited vegetative patches and anthropogenic activity.…”
Section: Discussionmentioning
confidence: 91%
“…Malaise traps have demonstrated high e cacy in capturing female horse ies through ight interception, but not of males horse ies. This widely recognized phenomenon has been documented in numerous studies conducted in the world across different regions and latitudes (Krolow et al 2017;Herczeg et al 2018), with few exceptions (Rafael et al 2021). Other alternative methods, such as deploying light traps above the canopy, offer distinct advantages for capturing male horse ies (Krolow et al 2010), well as shiny black plastic oil traps (Krčmar 2013) and polarized re ection traps.…”
Male horseflies have low capture rates in Malaise traps, a widely documented pattern observed in numerous ecological studies. We present findings from a specific locality in Ecuador where a departure from this established pattern is observed. In this locality, males accounted for 59.14% of Tabanidae captures. The disruption in capture patterns observed using Malaise traps represents an uncommon feature in the scientific literature and during collections conducted over eight years in Ecuador. Despite the inherent limitations of Malaise traps in capturing male horseflies, it is possible that under specific conditions, such as the presence of optimal aggregation areas for horseflies, Malaise traps may enhance the capture efficiency of males. Additionally, we provide a detailed discussion on the disruption and disparity in capture sex proportions in Tabanidae, commonly reported in the scientific literature. Understanding these aspects of tabanid behavior is essential due to the outbreaks and deaths associated with trypanosomiasis infections in Ecuador.
For the first time, Clusiidae (Diptera) species are recorded from the oceanic Archipelago Fernando de Noronha, Brazil. They are represented by three genera and seven species: Czernyola fumialula sp. nov., Heteromeringia czernyi Kertész, 1903, Sobarocephala araujoi sp. nov., S. finnilaei Frey, 1918, S. icmbio sp. nov., S. protea Lonsdale & Marshall, 2012, and S. sp. For S. icmbio sp. nov., the aggregation behavior at night was observed on the undersides of broad leaves, females contained an average of 71 eggs, and flight interception traps correlated a positive linear relationship with precipitation seasonally. An illustrated key is presented for all species of the Archipelago.
This paper covers the first record of window flies, Scenopinidae (Diptera), in the archipelago of Fernando de Noronha, Brazil: Scenopinus schulzi Enderlein, which is briefly characterized. This species was recorded in low numbers: three males and 13 female specimens. The occurrence of scenopinids in Fernando de Noronha is regarded as an extension of the Brazilian mainland continental fauna. The colonization of the archipelago is discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.