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Quoting Don MacNeill <donmacneill@bellaliant.net>: > I remember that Purple Martins were formerly thought to be good > for mosquito control. Subsequent studies of their eating habits > indicated they ate a large number of dragonflies, which would > certainly not be good for keeping mosquito numbers down. * it's hard to imagine how any predator could specialize in adult Mosquitoes, with their strategy of clinging to vegetation until a potential host comes by, and they spend such a short time as adults that no parasitoid could benefit from them. The infrequency with which one sees Dragonflies of Bats exploiting the cloud of Mosquitoes one attracts oneself emphasises the effectiveness of their cling-and-wait strategy. fred. ------------------------------------------------------------ Frederick W. Schueler & Aleta Karstad Bishops Mills Natural History Centre - http://pinicola.ca/bmnhc.htm Mudpuppy Night in Oxford Mills - http://pinicola.ca/mudpup1.htm Daily Paintings - http://karstaddailypaintings.blogspot.com/ South Nation Basin Art & Science Book http://pinicola.ca/books/SNR_book.htm RR#2 Bishops Mills, Ontario, Canada K0G 1T0 on the Smiths Falls Limestone Plain 44* 52'N 75* 42'W (613)258-3107 <bckcdb at istar.ca> http://pinicola.ca/ ------------------------------------------------------------
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