Effects of co-occurrence and intra- and interspecific interactions between Drosophila suzukii and Zaprionus indianus

被引:2
|
作者
Mendonca, Larine de Paiva [1 ]
Haddi, Khalid [2 ]
Conde Godoy, Wesley Augusto [1 ]
机构
[1] Univ Sao Paulo, Dept Entomol, ESALQ, Piracicaba, SP, Brazil
[2] Univ Fed Lavras, Dept Entomol, Lavras, MG, Brazil
来源
PLOS ONE | 2023年 / 18卷 / 03期
关键词
SPOTTED WING DROSOPHILA; DIPTERA DROSOPHILIDAE; POPULATION-DYNAMICS; COMMERCIAL FRUITS; UNITED-STATES; 1ST RECORDS; INVASION; DENSITY; BEHAVIOR; BIOLOGY;
D O I
10.1371/journal.pone.0281806
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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 drosophila Drosophila suzukii and the African fig fly Zaprionus 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 of Z. indianus, followed by other drosophilid species, including D. suzukii. Pupal survival and adult emergence were higher in D. suzukii than in Z. indianus at 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. indianus was significantly more fecund than D. suzukii. Development time showed no significant difference at intraspecific densities, but when reared together, Z. indianus had longer development times than D. suzukii. Leslie Matrix projections indicated that D. suzukii showed practically the same dynamics at intraspecific and interspecific densities, with increasing oscillations at low and intermediate densities and decreasing oscillations at high densities. Zaprionus indianus showed a similar oscillation to D. 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. suzukii females 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.
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页数:20
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