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Schistonchus (Aphelenchoididae) from Ficus (Moraceae) in Australia, with description of S. aculeata sp. n.

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For more content, see Nematologica.

A checklist of Schistonchus collected from Ficus spp. in Australia and stored in the Waite Nematode Collection at the University of Adelaide is presented. Within Australia, Schistonchus contains 12 morphospecies and four nominal species, based on a combination of the following characters: body shape when heat-relaxed, position of excretory pore, length of post-uterine sac, spicule form, and number and position of caudal papillae. Up to four morphospecies of Schistonchus have been collected from one species of Ficus and, in several cases, one morphospecies of Schistonchus has been collected from more than one host fig species. A phylogenetic tree based on D2/D3 sequences showed that Australian collections of Schistonchus fall into two clades, suggestive of endemic and introduced lineages with host switching. Schistonchus aculeata sp. n. is described from F. aculeata and F. opposita and differentiated from other species of Schistonchus by having the excretory pore opening near the lips, a short post-uterine sac, rosethorn-shaped spicules, arcuate gubernaculum or thickening of dorsal wall, amoeboid sperm, and three pairs of caudal papillae (one pair adcloacal, one just posterior to mid-tail, and one near the tail tip), association with Kradibia spp. pollinating wasps and apparent biogeographical range. A key to the known species and morphospecies of Schistonchus from Australia is presented.

Affiliations: 1: Centre for Evolutionary Biology and Biodiversity, School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB 1, Glen Osmond, SA 5064, Australia;, Email: kerrie.davies@adelaide.edu.au; 2: Centre for Evolutionary Biology and Biodiversity, School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB 1, Glen Osmond, SA 5064, Australia; 3: North Carolina Department of Agriculture and Consumer Services, 1040 Mail Service Center, Raleigh NC 27699-1040, USA, Fort Lauderdale Research and Education Center, University of Florida, 3205 Collimbe Avenue, Davie, FL 33314-7799, USA; 4: Forest Pathology Laboratory, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305-0035, Japan, Fort Lauderdale Research and Education Center, University of Florida, 3205 Collimbe Avenue, Davie, FL 33314-7799, USA; 5: Fort Lauderdale Research and Education Center, University of Florida, 3205 Collimbe Avenue, Davie, FL 33314-7799, USA

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/content/journals/10.1163/138855410x498932
2010-10-01
2016-12-05

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