Search

Start Over Subject bejlomorkovití

2. Does Hartigiola annulipes (Diptera: Cecidomyiidae) distribute its galls randomly?

Creator:
Pilichowski, Sebastian and Giertych, Marian J
Format:
print, počítač, and online zdroj
Type:
model:article and TEXT
Subject:
dvoukřídlí, bejlomorkovití, Diptera, gall midges, Hartigiola annulipes, gall distribution, leaf zones, specific leaf area, cardinal directions, 2, and 59
Language:
English
Description:
It is expected that environmental conditions impact the distribution of galls on host plants. Moreover, insects may induce their galls randomly or choose certain parts of a host to induce such growths. This study aimed to determine whether or not the gall midge, Hartigiola annulipes (Diptera: Cecidomyiidae), which induces galls on leaves of the European beech (Fagus sylvatica), prefers leaves facing a particular cardinal direction. In addition, we wanted to ascertain whether the galls are evenly spread across three leaf zones: proximal, median and distal, distinguished by dividing leaf area along the midrib. The results show that H. annulipes chose leaves facing various directions in different studied locations, and leaf choice is not restricted to the specific leaf area, a parameter that accurately reflects the light conditions of leaf growth. Moreover, the medial leaf zone was preferred, while the distal zone was avoided. The choice of the leaf zone modified the distance between the mid-rib and a gall. Gall distribution in the crown of trees is probably random, while at the leaf level, it is determined by leaf morphology., Sebastian Pilichowski, Marian J. Giertych., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. Příroda čarodějka - tři záhady ze světa bejlomorek

Creator:
Václav Skuhravý and Marcela Skuhravá
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Zoologie, fauna, bejlomorkovití, hmyz, 2, and 59
Language:
Czech
Description:
Three gall midge species displaying remarkable distribution in the Palaearctic region (Lasioptera artemisiae, Dasineura corniculata, Lasioptera eryngii) the causes of which cannot be explained, are discussed. and Václav Skuhravý, Marcela Skuhravá.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public