English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Food input by the cave cricket,  Hadenoecus cumberlandicus  Hubble & Norton (Orthoptera: Rhaphidophoridae), is vital to the cave community, making this cricket a true keystone species. Bioassays conducted on cave walls and in the laboratory show that clustering in  H. cumberlandicus  is guided by a pheromone, presumably excreta. This aggregation pheromone was demonstrated by using filter paper discs that had previous adult  H. cumberlandicus  exposure, resulting in > 70% response by either nymphs or adults, prompting attraction (thus, active component is a volatile), followed by reduced mobility (arrestment) on treated surfaces. Adults were similarly responsive to pheromone from nymphs, agreeing with mixed stage composition of clusters in the cave. Effects of [0.001M – 0.1M] uric acid (insect excreta's principle component) on  H. cumberlandicus  behavior were inconsistent. This pheromone is not a host cue (kairomone) and is not used as a repellent (allomone) as noted through lack of responses to natural  H. cumberlandicus  pheromone and uric acid concentrations by a co-occurring predatory cave orb weaver spider,  Meta ovalis  Gertsch (Araneae: Tetragnathidae). This pheromone is not serving as a sex pheromone because nymphs were affected by it and because this population of  H. cumberlandicus  is parthenogenic. The conclusion of this study is that the biological value of the aggregation pheromone is to concentrate  H. cumberlandicus  in sheltered sites in the cave conducive for minimizing water stress. Rather than signaling  H. cumberlandicus  presence and quality, the reduced mobility expressed as a result of contacting this pheromone conceivably may act as a defense tactic (antipredator behavior) against  M. ovalis , which shares this favored habitat site.

journal of insect science

The Pheromone of the Cave Cricket,<i>Hadenoecus cumberlandicus</i>, Causes Cricket Aggregation but Does Not Attract the Co-Distributed Predatory Spider,<i>Meta ovalis</i>

The Pheromone of the Cave Cricket,Hadenoecus cumberlandicus, Causes Cricket Aggregation but Does Not Attract the Co-Distributed Predatory Spider,Meta ovalis