2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/20/2019 | 10:15 AM - 10:30 AM | COLONIZATION AND DISPERSAL RATE OF TRICHOPTERA SPECIES IN ICELAND AND THE CONSEQUENT DISAPPEARANCE OF A CADDISFLY SPECIES | 251 AB
COLONIZATION AND DISPERSAL RATE OF TRICHOPTERA SPECIES IN ICELAND AND THE CONSEQUENT DISAPPEARANCE OF A CADDISFLY SPECIES
Twelve species of Trichoptera are recorded in Iceland. Ten of the species were known from the first half of the 20th century. In the last 70 years two species, Potamophylax cingulatus and Micopterna lateralis, colonized the island.
Apatania zonella, has disappeared from streams recently colonized by P. cingulatus, probably due to predation.
M. lateralis was found in a single light trap near Reykjavik in 2008. The annual catch has since grown from 2 specimens to 73. Larval habitat is still unknown.
It is possible to conclude from this that when species establish a population on a large island like Iceland, the population builds up and when it has established itself, it disperses fast. Dispersal rate of P. cingulatus was about 7 km/year.
- Biodiversity
- Distribution
- Invasives
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Presenters/Authors
Gisli Mar Gislason
(), University of Iceland, gmg@hi.is;
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Erling Olafsson
(), Icelandic Institute of Natural History, erling@ni.is;
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