Full-text - Norsk entomologisk forening

Table I. Ixodes uriae from nestlings of seabirds, N =nymphs, L =larvae.Bird speciesLocalityDate ofcollectionNo.birdsNo.infestedNo. ticks~Uria aalgeR\!>st22-27 July 19795463;3 '? 60 N" " "10 Aug. 196820Alcil torda "-----8 Aug. 196820" " "25 July 197910Fratercula arctica "" " "" " "1-7 July 198212 July 198127 July 197924111112 ; 2 N1;1 '?1;1 '?Cepplms ~ "" " "13 July 198030 July 198111111 ; 1 N19; 19 '?Rissa tridactylaRunde6-9 July 1975311 ; 1 L" " Rlbst22-27 July 197911942 ; ~ '? 39 NPhalacrocoraxaristotelisRunde6-9 July 1975100" " Rlbst6-14 Aug. 196830Fulmarus slacialis Rlbst5 July 198210Total 66 130two ticks in the nests of shags but in this colonythere are also nesting populations of puffins andrazorbills, thus the ticks may have come fromthese species. In a pure colony ofshag in Asvzer,we did not find any ticks./. uriae was found both in the nests of kitti­wakes and from puffin «runways» (Tab. 3). Ho­wever, these collection techniques do not pro­vide a complete picture of ticks in these places.Both engorged and unfed ticks were found.Ticks were not found on fulmars or petrels, orfrom nests of cormorants.Adult females, nymphs and larvae of /. uriaeappeared to undergo normal development oncommon guillemots, puffins, black guillemotsand kittiwakes.The fledged kittiwake which hosted 97 tickspuffins 1,0 and kittiwakes 0,5 ticks per individual.The common guillemot had many morefemale adults but fewer larvae than the othertwo species. The maximum number of ticks perbird was 6 for kittiwakes, 7 for puffins and 12for common guillemots.Seabirds from other areas were also examinedfor ticks (Tab. I and 2). A common guillemot,collected from the Geirangerfjord near Runde inJuly 1980, had 26 ticks, most of which werenymphs.Two adult shags from HOfll0ya and Gjesvzerin Finnmark had /. uriae. However, we did notfind any ticks in the shag colony located on theshady side of the island of Runde despite flagging,stone turning, and examining nest materialfor 2.5 hours. On the islands of R0St we found98