Apparent influences of host-plant distribution on the structure and the genetic variability of local populations of the Purple Clay (Diarsia brunnea)

作者：Luque Carine; Legal Luc^*; Machkour M'Rabet Salima; Winterton Peter; Gers Charles; Wink Michael

来源：Biochemical Systematics and Ecology, 2009, 37(1): 6-15.

DOI：10.1016/j.bse.2009.01.008

• Noctuidae
• ISSR
• Population structure
• Host-plant dependence

Diarsia brunnea (Lepidoptera, Heterocera, Noctuidae, Denis and Schiffermuller, 1775) is an abundant oligophagous moth occurring in the French Pyrenees. No or little influence of the forest type was found on population densities. In order to study the genetic structure of two separate moth populations in a natural forest and in a plantation, genomic fingerprinting with ISSR markers (Inter Simple Sequence Repeats) was used. The goal was to search for potential spatial structuring which could be influenced by differences in forest type.
No detectable genetic differences were observed between the populations of the two forest sites. But, although it was not possible to separate an the simple basis of the sampling site, a non-spatial structuring of three sub-populations became apparent Three of the host plants known for this moth are present in the sampled locations. Three genetically distinct sub-populations were discovered which correlated with the abundance of the three host plants in the two forest plots.

• 出版日期2009-2