PRIORITY EFFECTS AND SPECIES COEXISTENCE - EXPERIMENTS WITH FUNGAL-BREEDING DROSOPHILA
PRIORITY EFFECTS AND SPECIES COEXISTENCE - EXPERIMENTS WITH FUNGAL-BREEDING DROSOPHILA
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DOI：
10.2307/5257
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发表时间：
1994-10-01
影响因子：
4.8
通讯作者：
BINGLEY, M
中科院分区：
文献类型：
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作者：
SHORROCKS, B;BINGLEY, M
1.以真菌育种品种Drosophila phalerata和D. subobscura以及蘑菇Agaricus bispora forma albida进行了优先实验。2． 田间实验表明，这些物种存在产卵窗口，且以1天为增量的优先级适合实验室实验。 3． 优先级（首先到达）对“适合度”的三个组成部分有明显的影响。 当一个物种到达较晚时，其存活率较低，体型较小，发育时间较长。4． 优先级模型[基于 Atkinson 和 Shorrocks (1981) 的“聚合模型”]表明，传统优先级（两个物种平均一起到达，但具有一系列优先级）对共存没有显着贡献。5。 当移动平均到达时间以便对更多的逃犯情况进行建模时，优先级可以对共存产生显着影响。6． “优先”和“逃亡”情况都由实际数量的种内聚集主导。 这对集合种群动态具有影响。
1. Priority experiments were carried out using the fungal-breeding species Drosophila phalerata and D. subobscura and the mushroom Agaricus bispora forma albida.2. Field experiments showed that an oviposition window exists for these species and that priority in increments of 1 day are suitable for laboratory experiments.3. Priority (arriving first) had a clear effect upon three components of 'fitness'. When a species arrived late it had lower survival, smaller size and longer developmental time.4. A priority model [based upon the 'aggregation model' of Atkinson & Shorrocks (1981)] showed that traditional priority (both species arrive on average together, but with a range of priorities) does not significantly contribute to coexistence.5. When the average arrival time is moved so that more fugitive situations are modelled, then priority can have a marked effect upon coexistence.6. Both 'priority' and 'fugitive' situations are dominated by realistic amounts of intraspecific aggregation. This has implications for metapopulation dynamics.