Sex ratios of wild populations of Psylla uncatoides (Ferris and Klyver) in Hawaii

Author:

Leeper, John R.

Title:

Sex ratios of wild populations of Psylla uncatoides (Ferris and Klyver) in Hawaii

Periodical:

Proceedings of the Hawaiian Entomological Society

Year:

1977

Volume:

22

Pages:

481-487

Subject:

Psylla uncatoides

Summary:

Data collected on P. uncatoides populations that were collected over a three-year period at four locations on the island of Hawaii, (Mauna Loa Strip Road, Hawaii Volcanoes National Park, Koaia Tree Sanctuary, and at Kawaihae Uka in the Kohala Mountains), were subjected to chi-squared analysis in an effort to determine the occurrence of several sex ratio differences and what benefit these differences were to the psyllid populations. While data on sex ratio of wild P. uncatoides populations failed to substantiate the hypothesis that a differential morality factor favoring female nymphs existed at lower temperatures that would allow for more rapid growth of the psyllid populations in warmer temperatures, the data did indicate that an "in-built" natural control mechanism seems to regulate the sex ratios in wild populations.

Label:

Insects

URL:

http://hdl.handle.net/10125/11081

Collection:

Periodicals