Feeding responses of hybrids and the inheritance of host-use traits in leaf feeding beetles (Coleoptera: Chrysomelidae)
Feeding responses of hybrids and the inheritance of host-use traits in leaf feeding beetles (Coleoptera: Chrysomelidae)
复制标题
DOI：
10.1038/hdy.1996.5
复制
发表时间：
1996-01-01
期刊：
影响因子：
3.8
通讯作者：
Keese, MC
中科院分区：
文献类型：
--
作者：
Keese, MC
本文研究了两种密切相关的叶甲虫之间的 F-1 杂种对其亲本寄主植物的反应。 Ophraella notulata (NTL) 和 O. slobodkini (SLB) 分别专门以菊科植物 Iva frutescens 和 Ambrosia artemisiifolia 为食。将未交配的雄性和雌性以所有可能的组合杂交，并测试其后代的宿主偏好、宿主可接受性和幼虫在每种宿主植物上的存活率。 NTL x SLB（雌性 x 雄性）配对没有产生可存活的卵。杂交之间幼虫反应的比较表明，大多数测量性状都具有很强的优势。杂交幼虫（SLB x NTL）在寄主偏好和对蒿叶的可接受性方面与 SLB 相似，但在幼虫存活方面与 NTL 相似。 I.flutescens 的可接受性似乎是加性遗传的。这些结果表明，负责识别和接受两种寄主植物以及寄主偏好和性能的基因是独立遗传的。需要对寄主利用性状的遗传进行更详细的研究，以确定这种优势模式的常见程度以及有多少基因座控制这些性状，这两者对寄主植物关联如何进化的理论都具有重要意义。
This paper examines the responses of F-1 hybrids between two closely related chrysomelid beetles to the host plants of their parents. Ophraella notulata (NTL) and O. slobodkini (SLB) feed exclusively on the asteraceous plants Iva frutescens and Ambrosia artemisiifolia, respectively. Virgin males and females were crossed in all possible combinations and their progeny were tested for host preference, host acceptability and larval survival on each host plant. NTL x SLB (female x male) pairings did not produce viable eggs. Comparisons of larval responses between the crosses showed strong dominance for most traits measured. Hybrid larvae (SLB x NTL) resembled SLB for host preference and the acceptability of A. artemisiifolia, but they resembled NTL for larval survival. The acceptability of I. flutescens appeared to be inherited additively. These results suggest that the genes responsible for recognizing and accepting the two host plants and for host preference and performance are inherited independently. More detailed studies of the inheritance of host-use traits are needed to determine how common such dominance patterns are and how many loci control such traits, both of which have important implications for theories of how host plant associations evolve.