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Phylum: Arthropoda; Subphylum: Chelicerata; Class: Arachnida; Order: Acari Mites and Ticks; 23 Sheep Tick – Ixodes Ricinus – Larva, Male

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Name: Group: Phylum: Arthropoda; Subphylum: Chelicerata; class: Arachnida; order: Acari mites and ticks; 23 sheep tick – Ixodes ricinus – larva, male Magnification: m 1000 Complete the picture by drawing the legs. What is the difference between a larval and an adult tick? Sketch in the margins of dorsal scutellum(dorsal shield) of the male. How is the sexual dimorphism expressed in ticks? Name 3 diseases transmitted by ticks. Name: Group: Phylum: Arthropoda; Subphylum: Chelicerata; class: Arachnida; order: Acari mites and ticks; 24 sheep tick – Ixodes ricinus - female Magnification: pedipalp hypostome m chelicera 500 chitinous laminae sensory patch dorsal view ventral view m 1000 m 1000 Sketch in the dorsal scutellum and stigmata (in ventral view). What is the food of most stages of ticks? Complete the picture of hypostome by adding details (in ventral view). Notes: Name: Group: Phylum: Arthropoda; Subphylum: Chelicerata; 25 class: Arachnida; order: Acari mites and ticks; Varroa destructor Magnification: m 1000 Acarapsis woodi another important honeybee pest. Complete the picture by drawing abdomen and ventral scutellum. Sketch in position of stigmata. What is their function? What is this mite´s life strategy? Notes: Name: Group: Phylum: Arthropoda; Subphylum: Chelicerata; class: Arachnida; order: Acari mites and ticks; 26 Poultry mite Dermanyssus gallinae and Sarcoptes scabiei Magnification pedipalps chelicerae Pic. 1 Pic. 2 Complete the pictures by drawing in the legs and compare the two species (size of legs, body size). What is the foraging strategy and diurnal activity of the poultry mite? What are the hosts of S. scabiei, which organ is infected by this parasite? What is the respiratory organ of Sarcoptes scabiei? Imoportant parasite/commensal of humans: Demodex sp. Name: Group: Phylum: Arthropoda; Subphylum: Chelicerata; class: Arachnida; orders: Pseudoscorpionida (false scorpions), Scorpionida (scorpions) 27 and Uropygida(acid scorpions) Magnification: Pic. 1 Pic.2 Pic.3 What is the shape of scorpion‘s chelicerae and pedipalps, which body part is preabdomen and postabdomen? Mark them in the picture 2. Do any false scorpions, scorpions or uropygids live in your country? In what climate could you find Uropygids? Notes: Name: Group: Phylum: Arthropoda; Subphylum: Chelicerata; class: Arachnida; Order: Aranae – spiders 28 tarantula – Psalmopoeus cambridgei Magnification: horseshoe crab Limulus sp. (Class: Merostomata) 1 2 Scheme of the origin of book lung: transsection of gill limb of Limulus (1) and book lung of spiders (2). Take a look at tarantula´s exuvium and name the mouth appendages. Name 3 species of spiders sold in pet shops. What are the primitive traits of spiders (the infraorder Mygalomorphae)? Name: Group: Phylum:Arthropoda; Subphylum: Crustacea; Class: Branchiopoda 29 Order: Cladocera (water fleas)/Anostraca (Fairy shrimps)/Notostraca(tadpoleshrimps) water flea – Daphnia sp. ; salt-brime shrimp; tadpole shrimp Magnification: antennae Salt-brime shrimp Artemia salina thoracic appendages furca Tadpole shrimp (Lepidurus sp.) brood chamber Sketch in the compound eye and embryo in a brood chamber (precursor of ephippium). What kind of developement do Cladocera have – direct or indirect? What is the plankton and what is its importance to aquatic food chains? Artemia salina can be often bought in petshops, what is its use? Name: Group: Phylum: Arthropoda; Subphylum: Crustacea; class: Maxillipoda Subclass: Branchiura subclass: Copepoda 30 fish louse – Argulus foliaceus Cyclops sp Magnification: antennula antenna stilet second pair of maxilae nauplius Scheme of the branched appendage Sketch in eyes and suckers of fish louse. What animals are parasitised by crustaceans? 1. 2. 3. Parasitic types of Crustacea: 1. Lernaea cyprinacea, 2. Ergasilus sieboldi, 3. Linguatula serrata Name: Group: Phylum: Arthropoda; subphylum:Crustacea; Class: Maxillipoda Infraclass: barnacles – Cirripedia 31 barnacle – Balanus sp. and Sacculina sp. in a crab Macroscopic. Zvětšení: Barnacles attached to a snail shell and Schee of living barnacle. crab Pachygrapsus infected by Sacculina Look at the barnacle´s „shells“ attached to snail´s shell.What aquatic environment is typicaly inhabitted by barnacles? How do they collect food? One lineage of cirripedians became extremly adapted to parasitic lifestyle. One of them is genus Sacculina sp., complete the picture of the infected crab by sketching in the parasite. Notes: Name: Group: Phylum: Arthropoda; subphylum: Crustacea; Class: Malacostraca Order: Amphipoda order: Isopoda 32 aquatic Gammarus sp. aquatic Asellus aquaticus; terrestric Oniscus asellus Magnification: Gammarus sp. Aquatic sowbug (Asellus aquaticus) Compare the shape (flattening) of the body and shape of appendages of Gammarus sp. and Asellus aquaticus. How do they differ? Several parasitic „worms“ use freshwater crustaceans as intermediate hosts – name 3. Notes: Name: Group: Phylum: Arthropoda; subphylum: Crustacea; Class: Malacostraca Order: Decapoda mantis shrimp – Squilla mantis, hermit crab (Eupagurus sp.) 33 crabs (Maja sp., Pachygrapsus sp.), shrimp (Palaemon sp.) Macroskopic. What is „mantis-like“ on the mantis shrimp? Sketch in the anemones on the shell inhabited by the hermit crab. What type of symbiosis is it, and how does it work in this case? What traits are sexualy-dimorphic in most crabs? What are the most evident morphological differences between shrimps and crabs? Name: Group: Phylum: Arthropoda; subphylum: Crustacea; Class: Malacostraca Order: Decapoda 34 Norway lobster – Nephrops norvegicus Macroskopic. ventral view (sternites) dorsal view (tergites) Sketch in the walking legs (pereiopode), how many are they? Sketch in the telson composed of leaflike uropodes. What types of crustaceans are most commonly used as food? Notes Spiny lobster Palinurus .
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