Ann. Limnol. - Int. J. Lim.
|Page(s)||163 - 169|
|Published online||21 March 2016|
Phoretic associations between Nanocladius asiaticus (Diptera, Chironomidae) and its hosts Gestroiella (Heteroptera, Naucoridae) and Euphaea masoni (Odonata, Euphaeidae) in streams in Western Thailand
Department of Zoology, Faculty of Science, Kasetsart University, Animal Systematics and Ecology Speciality Research Unit (ASESRU), Bangkok 10900, Thailand
Corresponding author: email@example.com
Accepted: 21 August 2015
Phoretic associations between larvae of Nanocladius (Plecopteracoluthus) asiaticus (Diptera, Chironomidae) and two species in the genus Gestroiella (Heteroptera, Naucoridae) were studied in Kanchanaburi and Ratchaburi Provinces (Western Thailand). Gestroiella siamensis was used by chironomid larvae as a host more frequently than was Gestroiella limnocoroides. Moreover, N. asiaticus larvae were associated symphoretically with nymphs of the damselfly Euphaea masoni (Odonata, Euphaeidae). This is the first report of a symphoretic association involving E. masoni. Approximately 44% of the population of naucorids harboured symphoretic chironomids, whereas only 13% of damselfly nymphs were hosts of the chironomid larvae. Most of the brachypterous male (59%) naucorids hosted chironomid larvae. The attachment site of the chironomids was frequently along the mesofemur and mesosternum of the naucorid hosts. The chironomids were attached to the ventral sides of abdominal segments of E. masoni nymphs. There was a positive correlation in body length between chironomids and naucorids (r=0.389, P<0.01). There are many benefits of symphoresis in the Chironomidae, such as improved feeding opportunities, increased mobility, suitable pupation sites and decreased predation risks.
Key words: Nanocladius (Plecopteracoluthus) asiaticus / Gestroiella / Euphaea masoni / phoretic associations / Thailand
© EDP Sciences, 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.