Management of cats and rodents on inhabited islands: An overview and case study of Fernando de Noronha, Brazil

Russell, James C.; Abrahão, Carlos Roberto; Silva, Jean Carlos Ramos; Dias, Ricardo Augusto

doi:10.1016/j.pecon.2018.10.005

Cited by 19 publications

(28 citation statements)

References 59 publications

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“…No proven presence of cats, a proven low presence or absence of tegu lizards [19], and a high density of rodents [29] are reported for the secondary islands of the Fernando de Noronha archipelago. The absence of a single invasive species with a high predation potential, such as cats, may have allowed the higher density of T. atlantica on the secondary islands (0.357 individuals/m²), which was 119%…”

Section: Discussionmentioning

confidence: 99%

Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica)

Gasparotto

Micheletti²,

Mangini³

et al. 2019

Preprint

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BackgroundInvasive species have been responsible for the extinction of several species around the world. The Noronha skink is an endemic lizard from the Fernando de Noronha archipelago, Brazil, that has been suffering from habitat changes and the introduction of invasive species. ResultsTwo methods were used to estimate the density of the Noronha skink. The density on the main island was 0.167 ± 0.090 individuals/m²; that on the secondary islands was 0.357 ± 0.170 individuals/m²; and that on the entire archipelago was 0.184 ± 0.109 individuals/m². Moreover, the morphometric parameters of the Noronha skink were compared between the main island and secondary islands. The values of all parameters were higher on the secondary islands. ConclusionThe occurrence of invasive species on the main island seems to be a determining factor in the density and body size of the Noronha skink.

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Section: Discussionmentioning

confidence: 99%

Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica)

Gasparotto

Micheletti²,

Mangini³

et al. 2019

Preprint

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show abstract

“…Currently, only the main island is occupied by humans, and the entire terrestrial area is occupied by two federal protected areas: a Marine National Park, which is an IUCN category II protected area covering 70% of the terrestrial territory, and a Protected Area designated as IUCN category V that is destined for human use, covering 30% of the terrestrial area. The estimated human population was 2.9 thousand inhabitants in 2017, with approximately 7. atlantica [19,22,26,40].…”

Section: Study Areamentioning

confidence: 99%

Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica)

Gasparotto¹,

Micheletti²,

Mangini³

et al. 2020

Preprint

View full text Add to dashboard Cite

Background Invasive species have been responsible for the extinction of several species around the world. The Noronha skink is an endemic lizard from the Fernando de Noronha archipelago, Brazil, that has been suffering from habitat changes and the introduction of invasive species. Results The density of Trachylepis atlantica on the main island was 0.167 ± 0.090 individuals/m2; that on the secondary islands was 0.357 ± 0.170 individuals/m2; and that on the entire archipelago was 0.184 ± 0.109 individuals/m2. Moreover, the morphometric parameters of the Noronha skink were compared between the main island and secondary islands. The values of all parameters were higher on the secondary islands. Conclusion The occurrence of invasive species on the main island seems to be a determining factor in the density and body size of the Noronha skink.

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“…Indeed, a surprisingly high diversity of leptospiral strains and different animal reservoirs have been described in the Caribbean islands (Valverde et al, 2013), South West Indian Ocean islands (Guernier et al, 2016;Dietrich et al, 2018), and Pacific islands , thus indicating complex interactions between invasive species, native fauna and highly diversified environmental conditions. The evolutionary drivers of such diversity are poorly understood, however it is assumed that different leptospires can be introduced onto insular environments along with domestic and synanthropic species, such as rodents, cattle, goats, sheep, pigs, poultry, domestic dogs and cats (Russell et al, 2018). Such range of invasive mammals may boost the introduction of a highly variable number of leptospiral strains, which may adapt rapidly to new environments and available wildlife hosts (Desvars et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Seroepidemiology of leptospirosis and molecular characterization of the first Leptospira strain isolated from Fernando de Noronha archipelago, Brazil

Silva¹,

Marvulo²,

Ferreira³

et al. 2020

Preprint

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Leptospirosis has been widely reported in insular environments worldwide, characterizing a major public health threat. Although low genetic biodiversity is expected in these regions, the introduction of domestic and synanthropic mammals may contribute to the wider diversity leptospiral strains in insular settings. This study proposes a large-scale investigation of Leptospira infection in animals from Fernando de Noronha archipelago, Brazil. A total of 1,265 blood samples from domestic (n=682), synanthropic (n=133) and wild (n=450) animals were collected between 2007 and 2014, totaling 12 species. The presence of anti-Leptospira spp. antibodies was investigated by the Microscopic Agglutination Test (MAT) and kidney samples from synanthropic rodents were collected for the isolation of Leptospira spp. The leptospires recovered were further characterized by MAT with polyclonal antibodies, whole genome sequencing and Multilocus Sequence Typing (MLST). The MAT results revealed the presence of agglutinins in 90 samples (7.1%), and the most frequently found serogroup was Icterohaemorrhagiae (n=57) in practically all species included. Viable leptospires were recovered from one brown rat, and characterization revealed that the isolate belongs to L. interrogans serogroup Pyrogenes. This study stands as the most comprehensive investigation of Leptospira spp. infection in Fernando de Noronha archipelago, also providing the characterization of the first leptospiral strain ever isolated from an insular setting in Brazil. The results suggest that synanthropic rodents play a major role in the transmission of leptospirosis among wildlife and domestic species in the archipelago.

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Management of cats and rodents on inhabited islands: An overview and case study of Fernando de Noronha, Brazil

Cited by 19 publications

References 59 publications

Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica)

Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica)

Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica)

Seroepidemiology of leptospirosis and molecular characterization of the first Leptospira strain isolated from Fernando de Noronha archipelago, Brazil

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