ROOT VEGETABLE DIGGER

Management of Root-knot Nematode in Vegetable Crops

The root of the problem: increasing root vegetable intake in preschool children by repeated exposure and flavour flavour learning.

Children's vegetable consumption falls below current recommendations, highlighting the need to identify strategies that can successfully promote intake. The current study aimed to investigate the effectiveness of flavour-flavour learning as one such strategy for increasing vegetable intake in preschool children. Children (N = 29) aged 15 to 56 months were recruited through participating nurseri...

Parental Investment and Sexual Dimorphism in Digger Wasps (Hymenoptera: Sphecidae)

Alternative mating strategies in the digger wasp Philanthus zebratus Cresson.

Males of at least six species of the digger wasp genus Philanthus are territorial, defending areas on the ground and evidently marking these with a pheromone. This is also true of P. zebratus at two widely separate localities in Colorado. However, males in an aggregation in Jackson Hole, Wyoming, are nonterritorial and participate in flights serving to intercept females leaving and entering the...

Evolutionarily stable nesting strategy in a digger wasp.

Two alternative “strategies” will not coexist in a population unless on average they are equally successful. The most likely way for such an equilibrium to be maintained is through something equivalent to frequencydependent selection. Females of the digger wasp Sphex ichneumoneus (Sphecidae) nest in underground burrows. They usually dig and provision these by themselves but occasionally a nest ...