Genetic analysis of Drosophila sechellia specialization:: Oviposition behavior toward the major aliphatic acids of its host plant
Genetic analysis of Drosophila sechellia specialization:: Oviposition behavior toward the major aliphatic acids of its host plant
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DOI：
10.1023/a:1021689312582
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发表时间：
1998-11-01
影响因子：
2.6
通讯作者：
David, JR
中科院分区：
文献类型：
--
作者：
Amlou, M;Moreteau, B;David, JR
本文报道了黑腹果蝇复合体（Drosophilamelanogaster complex，D. melanogaster、黑腹杜父鱼D. simulans，拟谷盗D. mauritiana、毛叶杜父鱼D. sechellia）与天然巴戟天果实（巴戟天）的正常资源进行比较。sechellia）和该果实的两种主要脂肪酸（己酸，C6和辛酸，C8）。两种不同的实验技术进行了比较。当对照和实验食物放在同一产卵板上时，三种（D。sechellia，黑腹叶蝉D. mauritiana、毛叶杜父鱼D. melanogaster）对巴戟天表现出明显的偏好;塞切利亚表现出一种偏好。当产卵地点分开时，杜父鱼有选择性。sechellia的巴戟天和酸，和一般的回避行为，在其他三个物种。采用双板法对D.塞切利亚，D. simulans、F1杂种和回交。由于基因型，浓度及其相互作用的主要影响，观察到显着的行为差异。混合行为介于父母的行为之间。在一些情况下，随着浓度的增加，观察到从偏好到避免的质的逆转。在F1果蝇中，观察到随Cs浓度增加的优势逆转。不同受体的不同反应阈值可以解释这种观察结果。
Oviposition behavior of the four species in the Drosophila melanogaster complex (D. melanogaster, D. simulans, D. mauritiana, D. sechellia) was investigated versus natural morinda fruit (the normal resource of D. sechellia) and the two major aliphatic acids of this fruit (hexanoic acid, C6, and octanoic acid, C8). Two different experimental techniques were compared. When control and experimental food were set on the same egg laying plate, three species (D. sechellia, D. mauritiana, D. melanogaster) exhibited a significant preference for morinda; with aliphatic acids, only D. sechellia manifested a preference. With separate oviposition sites, a preference was found in D. sechellia for morinda and acids, and a general avoidance behavior in the three other species. Genetic analysis of the behavioral response toward C6 and Cg was done with the two plates technique on D. sechellia, D. simulans, Fl hybrids and backcrosses. Significant behavioral differences were observed with major effects due to genotype, concentration and their interaction. Hybrid behaviors were intermediate between those of their parents. In several cases, a qualitative reversal from preference to avoidance was observed with increasing concentration. In Fl flies, a dominance reversal was observed with increasing Cs concentration. Different reaction thresholds in different receptors might explain such observations.