Table 4 Summary of the differences between unaffected and oiled populations of tabanids.

From: Impact of the 2010 Deepwater Horizon oil spill on population size and genetic structure of horse flies in Louisiana marshes

 

Not oiled

Oiled

Adult fly counts

High

Low

Larvae recovered from marsh soil

High

Low

Effective population size

High

Low

Number of breeders

High

Low

Number of families

High

Low

Number of migrants, gene flow

High

Low

Genetic bottlenecks

No

Yes