A carregar...
Publicação
Modelling the invasion dynamics of the African citrus psyllid: The role of human-mediated dispersal and urban and peri-urban citrus trees
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.06 MB | Adobe PDF |
Orientador(es)
Resumo(s)
The African citrus psyllid, Trioza erytreae (Del Guercio) (Hemiptera, Triozidae), is native to tropical Africa
and invasive species in North America and Europe. The main host plants are citrus, displaying a preference
for lemon trees. This psyllid was recently detected in the northwest region of the Iberian Peninsula, both
in Spain and Portugal. Here, we used a model combining a reaction-diffusion model to a stochastic long-
distance dispersal model to simulate the invasion dynamics of T. erytreae in Portugal. The psyllid spread
in Portugal was simulated between 2015 and 2021 for different combinations of model parameters: two
fecundity levels; spread with and without stochastic long-distance dispersal; single or two introductions of
T. erytreae; and considering or not the urban and peri-urban citrus trees, besides citrus orchards, estimated
using Google Street view imagery. The incorporation of long-distance human mediated dispersal significantly
improved the F1-score in the model validation using the official reports as the observed data. Concomitantly,
the dispersal rate of T. erytreae in Portugal was on average about 66 km/year, whereas removing long-distance
dispersal events, the observed mean was 7.8 ± 0.3 km/year. The dispersal was mainly towards the south along
the coastline, where human population is concentrated. The inclusion of the estimated citrus trees outside
orchards areas significantly increased the F1-score in the model validation, revealing the importance these
isolated host plants hold as stepping stones for the species current invasion and possibly for other species alike
Descrição
Palavras-chave
insect vectors invasive isolated trees models non-native species psyllids spread Trioza erytreae
Contexto Educativo
Citação
Nunes P, Robinet C, Branco M, Franco JC (2023) Modelling the invasion dynamics of the African citrus psyllid: The role of human-mediated dispersal and urban and peri-urban citrus trees. In: Jactel H, Orazio C, Robinet C, Douma JC, Santini A, Battisti A, Branco M, Seehausen L, Kenis M (Eds) Conceptual and technical innovations to better manage invasions of alien pests and pathogens in forests. NeoBiota 84: 369–396
Editora
Pensoft Publishers