1 / 13

Lousy Phylogenies:

Lousy Phylogenies:. Phthiraptera systematics and the antiquity of lice. Vincent S. Smith. Division of Environmental and Evolutionary Biology Institute of Biomedical and Life Sciences Graham Kerr Building University of Glasgow Scotland, UK. Diversity.

nile
Download Presentation

Lousy Phylogenies:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lousy Phylogenies: Phthiraptera systematics and the antiquity of lice Vincent S. Smith Division of Environmental and Evolutionary Biology Institute of Biomedical and Life Sciences Graham Kerr Building University of Glasgow Scotland, UK

  2. Diversity • 4,384 spp “chewing lice” (3,508 bird & 402 mammal spp) • 543 spp sucking lice (812 spp mammal) • Physical characteristics • wingless, dorsoventrally flattened, 0.3-11mm, 3 nymphal instars • feed on feathers, fur & skin debris (“chewing lice”) or blood • adaptations against host grooming • Distribution • mirror host distribution worldwide in virtually everyhabitat • absent on Chiroptera, Cetacea, Microbiotheria, Monotremata, Notoryctemorphia, Pholidota & Sirenia. Lice (Phthiraptera): biology • Cophylogeny, cospeciation & coevolution

  3. Chewing Lice“Mallophaga” Parasitic Lice (Phthiraptera) Sucking Lice(Anoplura) Psocoptera Psocoptera Amblycera Ischnocera Rhynchophthirina Anoplura - 1,350 spp in 7 families - Most “primitive” suborder - More vagile, less host specific - Widespread on birds - 2 fam. South American mammals & marsupials - 1 fam. on Australasian marsupials - 3,060 spp., # families ? - Widespread, ~90% spp. on birds - Avian groups poorly known - Highly host specific - Niche restricted - Mammal infesting species of veterinary significance - Just 3 species - On unrelated hosts - Acquired via shared use of watering holes? - Tiny mandibles present at end of a long rostrum pierce hosts thick skin - 550 spp. in 16 families - Absent from birds - Well studied - Greatest medical & veterinary significance - Vectors of several important diseases - Low prevalence on heathy hosts Lyal, 1985 (Morphology) Kim & Ludwig, 1982 (Morphology) Lice (Phthiraptera): taxonomy - 1,350 spp in 7 families - Most “primitive” suborder - More vagile, less host specific - Widespread on birds - 2 fam. South American mammals & marsupials - 1 fam. on Australasian marsupials - 3,060 spp., # families ? - Widespread, ~90% spp. on birds - Avian groups poorly known - Highly host specific - Niche restricted - Mammal infesting species of veterinary significance - Just 3 species - On unrelated hosts - Acquired via shared use of watering holes? - Tiny mandibles present at end of a long rostrum pierce hosts thick skin - 550 spp. in 16 families - Absent from birds - Well studied - Greatest medical & veterinary significance - Vectors of several important diseases - Low prevalence on heathy hosts

  4. Anoplura Rhyn… Known Louse Phylogeny, 1996 Ischnocera Birds Amblycera Mammals Suborder Family Genus Anoplura 532 Rhyn… 3 Ischnocera 3,060 1,344 Amblycera

  5. 1996 2003 Suborder Suborder Family Family Genus Genus Anoplura Anoplura 532 532 3 3 Rhyn… Rhyn… 3,060 3,060 Ischnocera Ischnocera 1,344 1,344 Amblycera Amblycera

More Related