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ROOSTING BEHAVIOUR BY FLETCHEROMYIA FLETCHERI (DIPTERA: SARCOPHAGIDAE) IN SARRACENIA PURPUREA (SARRACENIACEA)

  • Margaret A. Krawchuk (a1) and Philip D. Taylor (a1)

Extract

The flute-shaped leaves of the pitcher plant Sarracenia purpurea L. are a fluidfilled microhabitat rich in invertebrate diversity (Bradshaw 1983; Heard 1994; Hardwick and Giberson 1996; Harvey and Miller 1996; Miller et al. 1994). They are the obligate larval habitat for Fletcherimyia fletcheri (Aldrich) (Forsyth and Robertson 1975). Most literature reports of F. fletcheri present information only on larval life history and population dynamics (Fish and Hall 1978; Hardwick and Giberson 1996). Forsyth and Robertson (1975) state anecdotally that they observed adults feeding on flowers and other nectar sources within their study area. We believe that our observations represent the first report of adult F. fletcheri roosting within the flower heads of the pitcher plant.

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1Author to whom all correspondence should he addressed (E-mail: meg.krawchuk@acadiau.ca).

References

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Bradshaw, W.E. 1983. Interaction between the mosquito Wyeomyia smithii, the midge Metriocnemus knabi, and their carnivorous host Sarracenia purpurea, pp. 161–89 in Frank, J.H., Lounibos, L.P. (Eds.), Phytotelmata: terrestrial plants as hosts of aquatic insect communities. Medford: Plexus
Fish, D., Hall, D.W. 1978. Succession and stratification of aquatic insects inhabiting the leaves of the insectivorous pitcher plant, Sarracenia purpurea. American Midland Naturalist 99: 172–83
Forsyth, A.B., Robertson, R.J. 1975. K reproductive strategy and larval behavior of the pitcher plant sarcophagid fly, Blaesoxipha fletcheri. Canadian Journal of Zoology 53: 174–9
Hardwick, M.L., Giberson, D.J. 1996. Aquatic insect populations in transplanted and natural populations of the purple pitcher plant, Sarracenia purpurea, on Prince Edward Island, Canada. Canadian Journal of Zoology 74: 1956–63
Harvey, E., Miller, T.E. 1996. Variance in composition of inquiline communities in leaves of Sarracenia purpurea L. on multiple spatial scales. Oecologia 108: 562–6
Heard, S.B. 1994. Pitcher-plant midges and mosquitoes: a processing chain commensalism. Ecology 75: 1647–60
Miller, T., Cassill, D., Johnson, C., Kindell, C., Leips, J., McInnes, D., Bevis, T., Mehlman, D., Richard, B. 1994. Intraspecific and interspecific competition of Wyeomyia smithii (Coq.) (Culicidae) in pitcher plant communities. American Midland Naturalist 131: 136–45

ROOSTING BEHAVIOUR BY FLETCHEROMYIA FLETCHERI (DIPTERA: SARCOPHAGIDAE) IN SARRACENIA PURPUREA (SARRACENIACEA)

  • Margaret A. Krawchuk (a1) and Philip D. Taylor (a1)

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