120 Agnieszka Badek and Jacek Dabert Fig. 1. Analysed species <strong>of</strong> <strong>the</strong> genus <strong>Avenzoaria</strong>. A – A. totani, male, dorsal view; B – A. totani, female, dorsal view; C – A. <strong>canuti</strong>, male; D – A. <strong>canuti</strong>, female; E – A. calidridis: male, dorsal view; F – A. calidridis, female, dorsal view
THE POSSIBLE HYBRID THE FEATHER MITE AVENZOARIA CANUTI 121 (Avenzoariidae, Avenzoariinae). Mites <strong>of</strong> this genus occur on <strong>the</strong> vane surface <strong>of</strong> wing contour fea<strong>the</strong>rs in waders <strong>of</strong> suborders Charadrii and Scolopaci (Charadriiformes). We selected 2 species for <strong>the</strong> analysis: A. totani (Canestrini, 1878) (Fig. 1 A–B) and A. calidridis (Oudemans, 1904) (Fig. 1 E–F), which are commensals <strong>of</strong> tattlers (Tringa L., 1758) and sandpipers (Calidris Merrem, 1804), respectively. <strong>The</strong>se 2 species are very similar according to discrete morphological characters but relatively distant genetically (DABERT et al. 2001). Analysis <strong>of</strong> <strong>the</strong> variability <strong>of</strong> both quantitative and discrete morphological characters was conducted to determine whe<strong>the</strong>r populations <strong>of</strong> A. calidridis and A. totani inhabiting various host species differ significantly each o<strong>the</strong>r and, if so, what is <strong>the</strong> taxonomic status <strong>of</strong> <strong>the</strong> <strong>possible</strong> differences. We had previously found that <strong>the</strong> <strong>Avenzoaria</strong> population occurring on <strong>the</strong> Red Knot Calidris canutus (L., 1766) that was formerly recognized as A. calidridis shows, apart from <strong>the</strong>ir own characteristic features also typical characters <strong>of</strong> both A. calidridis and A. totani. We gave this population a species rank and described it as a new species: A. <strong>canuti</strong> (Fig. 1 C–D) (BADEK & DABERT 2005). In <strong>the</strong> present paper we show <strong>the</strong> results <strong>of</strong> <strong>the</strong> morphological analysis <strong>of</strong> this species compared with ones made for particular populations <strong>of</strong> A. calidridis and A. totani sampled from various host species. Our main aim here was to reconstruct <strong>the</strong> phylogenetic relationships among <strong>the</strong>se <strong>mite</strong> populations and to hypo<strong>the</strong>size <strong>the</strong> <strong>origin</strong> <strong>of</strong> A. <strong>canuti</strong>. MATERIALS AND METHODS <strong>The</strong> material used in <strong>the</strong> present study <strong>origin</strong>ates from <strong>the</strong> acarological collection <strong>of</strong> <strong>the</strong> Department <strong>of</strong> Animal Morphology, Adam Mickiewicz University, Poznañ, and was sampled in Poland and South Africa in 1983-1991 (Table 1). <strong>Avenzoaria</strong> Table 1. Basic information on <strong>the</strong> analysed <strong>mite</strong> samples No. <strong>Avenzoaria</strong> Host species Location Date No. <strong>of</strong> specimens species measured males females 1 A. totani Tringa glareola Turawskie Lake, Poland Aug 1984 17 23 2 A. totani T. glareola S³oñsk near Kostrzyn, Poland Jul 1987 22 20 3 A. totani T. glareola S³oñsk near Kostrzyn, Poland Jul 1988 12 17 4 A. totani T. stagnatilis S³oñsk near Kostrzyn, Poland Jul 1987 6 8 5 A. totani T. totanus Zagórów, Poland May 1988 11 18 S³oñsk near Kostrzyn, Poland Aug 1988 6 A. <strong>canuti</strong> Calidris canutus Vistula Mouth, Poland Aug 1985 14 65 Velddrif, South Africa Nov 1991 7 A. calidridis C. alpina Vistula Mouth, Poland Aug 1985 2 13 Sowiniec near Poznañ, Poland Sep 1990 8 A. calidridis C. minuta Sowiniec near Poznañ, Poland Sep 1985 3 39 Vistula Mouth, Poland Sep 1990 S³oñsk near Kostrzyn, Poland Jul 1987 Velddrif, South Africa Nov 1991 9 A. calidridis C. temminckii S³oñsk near Kostrzyn, Poland Jul 1987 14 28 10 A. calidridis C. ferruginea S³oñsk near Kostrzyn, Poland Aug 1988 8 40 Vistula Mouth, Poland Aug 1990 11 A. calidridis C. alba Vistula Mouth, Poland Aug 1990 15 19 Górki Wschodnie near Gdañsk, Poland Oct 1990
Change language