Question

The biology of the phonotactic parasitoid, homotrixa sp. (diptera: tachinidae), and its impact on the survival of male sciarasaga quadrata (orthoptera: tettigoniidae) in the field"

Answer 1

Explanation:

1) Unlike most parasitoids, tachinid flies of the tribe Ormiini use sound to locate their hosts. Although thought to exert selection pressure on their host's calling behaviour, little is known about the biology of ormiines. Accordingly, this study reports the biology and impact of the ormiine Hornotrixa sp. upon calling males of the univoltine bushcricket Sciarasaga quadrata Rentz in south‐western Australia.

2) Populations of adult S.quadrata were monitored in the field over two successive calling seasons.

3) Multiparasitism of hosts was common, with up to sixteen fly larvae found within parasitized males. The number of fly larvae within hosts significantly increased at the end of the season. However, successful emergence of fly larvae from hosts, as well as pupal size, significantly decreased as more than one fly larva developed within the host.

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