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Species Diversity and Emergence Patterns of Nematocerous Flies (Insecta: Diptera) from Three Coastal Salt Marshes in Prince Edward Island, Canada

Donna J. Giberson, Bohdan Bilyj and Neil Burgess
Estuaries
Vol. 24, No. 6, Part A (Dec., 2001), pp. 862-874
Stable URL: http://www.jstor.org/stable/1353177
Page Count: 13
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Species Diversity and Emergence Patterns of Nematocerous Flies (Insecta: Diptera) from Three Coastal Salt Marshes in Prince Edward Island, Canada
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Abstract

Emerging insects were monitored every 10 days between early May and late August 1993, from tidal pools in three coastal salt marshes on Prince Edward Island, Canada. The salt marsh pools ranged from about $1\ {\rm m}^{2}\ \text{to}>1,000\ {\rm m}^{2}$ in surface area, and had salinities ranging from 11-27‰. Water temperatures through the study period ranged from 4-46°C. Most of the emerging insects were flies (Diptera; 85%), and two-thirds of these were in the sub-Order Nematocera, mainly Chironomidae, Ceratopogonidae, and Culicidae. Forty-three species of Nematocera were identified, although most of these were rare occurrences, and twelve of the species are undescribed. No consistent relationships were found between abundance or diversity and pool size or marsh for Nematocera species overall, although some species showed a statistical preference for a particular marsh or pool size. Emergence patterns were consistent between marshes for species found in different marshes, but overall patterns were highly variable, depending upon species.

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