Two species of water mites, Arrenurus recumbens and Arrenurus peregrinus, differ

Question

Two species of water mites, Arrenurus recumbens and Arrenurus peregrinus, differ in hosts. Hosts for A. recumbens are chironomid midges, which are usually poor fliers, whereas hosts for A. peregrinus are dragonflies, which tend to be very strong fliers. Bruce Smith hypothesized that A. recumbens should show more among-population genetic differentiation than A. peregrinus. He examined a single 2-allele neutral locus in 4 populations of each species, and found the following for frequencies of allele ‘M’:

Population 1 Population 2 Population 3 Population 4

A. recumbens 0.34 0.26 0.30 0.22

A. peregrinus 0.15 / 0.33 / 0.17 / 0.67

Was Bruce Smith’s hypothesis upheld? Why do you say this? What might this mean about the biology of the host insects?

Explanation / Answer

Yes, Bruce smith's hypothesis were upheld.He discovered that species of Arrenurus use sex pheromones where females would produce female offspring and others almost male offspring and some produced unbiased clutches.

Biology of host insects- in biology host act as an organism that supports a parasitic , a mutual, commensal symbiont and provides nourishment and food and habitat for living.Moreover, a host provides food resources and are substrate for insects or other fauna.When it's a case of human parasites host effect epidemiology of parasitism or disease.   

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