Ficha de avaliação EICAT
Salvator merianae
MO · Moderado
Identificação e síntese
Taxonomia registrada
Classificação canônica recuperada da integração com o GBIF. O sistema explicita os níveis que a própria resposta do GBIF não informa.
Avaliação de impactos
1. Redução no desempenho de indivíduos da biota nativa
Resposta: Sim
Mecanismos selecionados: (2) Predação
Evidências por mecanismo
\"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.\" Obs.: Ao longo de toda discussão o autor defende que o mecanismo por tras disso é predação.
Referências: Gasparotto et al. Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica). Pre-print: https://orcid.org/0000-0002-8241-7699 Gasparotto. 2019. Conservação do Mabuia (Trachylepis atlantica, Schimidt, 1945) no Arquipélago de Fernando de Noronha - PE. Tese de doutorado.
2. Declínio no tamanho populacional de espécie nativa
Resposta: Sim
Mecanismos selecionados: (2) Predação
Evidências por mecanismo
\"The main food items for tegu lizards were fruits, with relative importance (Prey-specific Index of Relative Importance – %PSIRI) of 41.3%, and the endemic Noronha skink (Trachylepis atlantica; 19.6%)\" \"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.\" \"Predation of the native green turtle (Chelonia mydas) hatchings by exotic/invasive tegu lizard (Savator merianae) on Fernando de Noronha archipelago,\"
Referências: Gaiotto et al. 2020. Diet of invasive cats, rats and tegu lizards reveals impact over threatened species in a tropical island. Perspectives in Ecology and Conservation 18 (2020) 294–303 Gasparotto et al. Impact of invasive species on the density and body size of an insular endemic lizard (Trachylepis atlantica). Pre-print: https://orcid.org/0000-0002-8241-7699 Micheletti et al. TERRESTRIAL INVASIVE SPECIES ON FERNANDO DE NORONHA ARCHIPELAGO: WHAT WE KNOW AND THE WAY FORWARD.
3. Extinção local de população nativa
Resposta: Não
4. Reversibilidade da extinção local após remoção do táxon
Resposta: Nenhuma extinção registrada