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Roatan and Bay Islands Discussion List Archive
| Posted On: | 26-Mar-2003 |
| From: | Sven Zoerner [s.a.z.....de] |
| Subject: | Re: [roatan] Sandflies |
Hello Judy, Rethink what I said once again: 1) Sandflies donīt have anything to with Sand. But if you wash of the sand after a walk on the beach or whatever you wash of pheromones and other body produced scents which attract the biting midges. Aswell as you cool down your body which reduces the amount of CO2 (Carbon Dioxid) which is produced. By the way, Allison, the Carbon Dioxid Attraction is of cause right, but it is only a part of "Finding Prey" for the sandflies. But nevertheless: "Donīt forget to breath :-)" 2) Avoiding Beach and Sand means also staying in more "civilized" areas of the Island. I donīt think that you have been hiking through the mangroves and fernwoods, Caribean Dry Forest, or Wetsavanna especially in the middayheat or or on sunset after a very hot and exhausting day. If you stay in the town or in a cultivated property there want be much sandflys. Probably there are more on the beach, were the next "wild" area is nearer than at the places the humans normaly stay on Roatan, Utila or Guanaja. If you would try hiking through the wilder areas you probably would have even more problems with the sandflies. 3) Sandflys are very small. If there is no breeze this means two important things to somebody who is that small and needs to find a moving prey: A)You want be blown away from the breeze, so it is easier to find a place to get some blood. B)The breeze is not there to hide away the signs of your prey: Bodytemperature, CO2 Gradient(Direction), Pheromone and Scents gradients. So no wonder: If there is no breeze it is easier to bite for a biting midge. -- with kind regards Sven Zoerner mailto:s.a.z.....de Your own Online Store Selling our Overstock. | |
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