Abstract
In drosophilids, competition and coexistence can impact survivorship, growth, and reproductive output. Here, we evaluated direct competition between two co-occurring fruit flies, the spotted-wing drosophilaDrosophila suzukiiand the African fig flyZaprionus indianus, comparing results from field collections with laboratory experiments. Field collections were conducted to evaluate co-occurrence between species. In the laboratory, different densities of eggs of each species were provided an artificial diet, and intra- and interspecific densities were evaluated regarding biological traits such as development and fecundity. Field collections showed a prevalence ofZ.indianus, followed by other drosophilid species, includingD.suzukii. Pupal survival and adult emergence were higher inD.suzukiithan inZ.indianusat both intra- and interspecific densities, with decreasing values in response to increased densities. Fecundity did not differ significantly for either species at different intraspecific densities, but when reared together at different densities,Z.indianuswas significantly more fecund thanD.suzukii. Development time showed no significant difference at intraspecific densities, but when reared together,Z.indianushad longer development times thanD.suzukii. Leslie Matrix projections indicated thatD.suzukiishowed practically the same dynamics at intraspecific and interspecific densities, with increasing oscillations at low and intermediate densities and decreasing oscillations at high densities.Zaprionus indianusshowed a similar oscillation toD.suzukii, except at intermediate intraspecific densities, when the pattern was cyclic. Low interspecific densities resulted in decreasing oscillations. In the two-choice oviposition bioassays,D.suzukiifemales showed no significant preference for diets previously infested or not with either conspecific or heterospecific eggs at different densities. Understanding competitive interactions between co-occurring heterospecific species should be considered when establishing management tactics for spotted-wing drosophila.
Funder
National Council of Scientific and Technological Development
Publisher
Public Library of Science (PLoS)
Reference84 articles.
1. First records of Zaprionus indianus (Diptera: Drosophilidae), a pest species on commercial fruits from Panama and the United States of America;K van der Linde;Fla Entomol,2006
2. Comparison of overwintering survival and fertility of Zaprionus indianus (Diptera: Drosophilidae) flies from native and invaded ranges;NJ Lavagnino;J Therm Biol,2020
3. Is Zaprionus indianus Gupta, 1970 (Diptera, Drosophilidae) currently colonizing the Neotropical region?;CR Vilela;Drosoph Inf Serv,1999
4. Ocorrência de Zaprionus indianus Gupta, 1970 (Diptera: Drosophilidae) no estado de Minas Gerais;CM Kato;Ciência e Agrotecnologia,2004
5. Newly invading species exploiting native host-plants: The case of the African Zaprionus indianus (Gupta) in the Brazilian Cerrado (Diptera, Drosophilidae);BFD Leão;Ann Soc Entomol Fr,2004
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献