Life cycles of caseless caddis flies (Trichoptera) and their
synchronisation

D 2001

Life cycles of caseless caddis flies (Trichoptera) and their synchronisation

KOMZÁK, Petr

Basic information

Original name

Life cycles of caseless caddis flies (Trichoptera) and their synchronisation

Authors

KOMZÁK, Petr

Edition

Toulouse (France), 2nd Symposium for European Freshwater Sciences : Abstract Book, p. 89-89, 2001

Publisher

University Paul Sabatier

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10600 1.6 Biological sciences

Country of publisher

France

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Science

Keywords in English

Trichoptera; Rhyacophila; Hydropsyche; Polycentropus; life cycle; synchronisation

Abstract

V originále

The life cycles of three caseless caddis flies (Rhyacophila nubila, Hydropsyche siltalai, and Polycentropus flavomaculatus) were studied in the Oslava River (South Moravia, Czech Republic). The life cycle of H. siltalai coexisting there with five other Hydropsyche species (above all H. pellucidula and H. incognita) was univoltine and synchronous. Also the development of most specimens of R. nubila and P. flavomaculatus took one year. However, high asynchrony of their life cycles resulted in the presence of a wide range of developmental stages during all the year. Different levels of synchronisation of the life cycles of Central European caseless caddis flies are discussed: 1. Species usually coexisting with congeneric species or those markedly affected by regular temporal pattern of abiotic factors (e.g. temperature, discharge) or food supply tend to have synchronous life cycles. Moreover a need for net-spinning sites may enhance competition (especially in the family Hydropsychidae). 2. Species not regularly coexisting with congeners and not pronouncedly influenced by regular temporal patterns of abiotic factors or food supply tend to have asynchronous life cycles. Such a life cycle enables them to reduce intraspecific competition and negative effects of non-predictable disturbances.

Links

GA206/99/1522, research and development project

Name: Vliv hydrologických podmínek toku na biotu dna a hyporhealu

Investor: Czech Science Foundation, The impact of hydrological conditions in streams on top bottom and hyporheic biota

Citovat

KOMZÁK, Petr. Life cycles of caseless caddis flies (Trichoptera) and their synchronisation. In 2nd Symposium for European Freshwater Sciences : Abstract Book. Toulouse (France): University Paul Sabatier, 2001, p. 89.

@inproceedings{391462,
   author = {Komzák, Petr},
   address = {Toulouse (France)},
   booktitle = {2nd Symposium for European Freshwater Sciences : Abstract Book},
   keywords = {Trichoptera; Rhyacophila; Hydropsyche; Polycentropus; life cycle; synchronisation},
   language = {eng},
   location = {Toulouse (France)},
   pages = {89-89},
   publisher = {University Paul Sabatier},
   title = {Life cycles of caseless caddis flies (Trichoptera) and their synchronisation},
   year = {2001}
}

TY  - JOUR
ID  - 391462
AU  - Komzák, Petr
PY  - 2001
TI  - Life cycles of caseless caddis flies (Trichoptera) and their synchronisation
PB  - University Paul Sabatier
CY  - Toulouse (France)
KW  - Trichoptera
KW  - Rhyacophila
KW  - Hydropsyche
KW  - Polycentropus
KW  - life cycle
KW  - synchronisation
N2  - The life cycles of three caseless caddis flies (Rhyacophila nubila, Hydropsyche siltalai, and Polycentropus flavomaculatus) were studied in the Oslava River (South Moravia, Czech Republic). The life cycle of H. siltalai coexisting there with five other Hydropsyche species (above all H. pellucidula and H. incognita) was univoltine and synchronous. Also the development of most specimens of R. nubila and P. flavomaculatus took one year. However, high asynchrony of their life cycles resulted in the presence of a wide range of developmental stages during all the year. Different levels of synchronisation of the life cycles of Central European caseless caddis flies are discussed: 1. Species usually coexisting with congeneric species or those markedly affected by regular temporal pattern of abiotic factors (e.g. temperature, discharge) or food supply tend to have synchronous life cycles. Moreover a need for net-spinning sites may enhance competition (especially in the family Hydropsychidae). 2. Species not regularly coexisting with congeners and not pronouncedly influenced by regular temporal patterns of abiotic factors or food supply tend to have asynchronous life cycles. Such a life cycle enables them to reduce intraspecific competition and negative effects of non-predictable disturbances.
ER  -

KOMZÁK, Petr. Life cycles of caseless caddis flies (Trichoptera) and their synchronisation. In \textit{2nd Symposium for European Freshwater Sciences : Abstract Book}. Toulouse (France): University Paul Sabatier, 2001, p.~89.

Detailed Information on Publication Record