phylum: arthropoda ; 23

Name: Group:

23

Phylum: Arthropoda; Subphylum: Chelicerata;

class: Arachnida; order: Acari mites and ticks;

sheep tick – Ixodes ricinus – larva, male

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.

Magnification:

10

00

m

Name: Group:

24

sensory patch

chitinous laminae

chelicera

hypostome

pedipalp



sheep tick – Ixodes ricinus - female

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:

Magnification:

dorsal view ventral view

10

00

m

10

00

m

50

0

m

Name: Group:

25



Varroa destructor

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:

Magnification:

Acarapsis woodi another

important honeybee pest.

10

00

m

Name: Group:

26

chelicerae

pedipalps

Imoportant parasite/commensal of humans: Demodex sp.



Poultry mite Dermanyssus gallinae and Sarcoptes scabiei

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?

Magnification

Pic. 1 Pic. 2

Name: Group:

27

Phylum: Arthropoda; Subphylum: Chelicerata; class: Arachnida;

orders: Pseudoscorpionida (false scorpions), Scorpionida (scorpions)

and Uropygida(acid scorpions)

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:

Magnification:

Pic. 1

Pic.2

Pic.3

Name: Group:

28

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)?

Phylum: Arthropoda; Subphylum: Chelicerata; class: Arachnida;

Order: Aranae – spiders

tarantula – Psalmopoeus cambridgei

Magnification:

Scheme of the origin of book lung:

transsection of gill limb of Limulus (1)

and book lung of spiders (2).

horseshoe crab Limulus sp. (Class: Merostomata)

1 2

Name: Group:

29

brood chamber

antennae

furca

thoracic appendages

Phylum:Arthropoda; Subphylum: Crustacea; Class: Branchiopoda Order: Cladocera (water fleas)/Anostraca (Fairy shrimps)/Notostraca(tadpoleshrimps)

water flea – Daphnia sp. ; salt-brime shrimp; tadpole shrimp

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?

Magnification:

Salt-brime shrimp Artemia salina

Tadpole shrimp

(Lepidurus sp.)

Name: Group:

30

antenna

antennula

second pair

of maxilae

stilet

Phylum: Arthropoda; Subphylum: Crustacea; class: Maxillipoda

Subclass: Branchiura subclass: Copepoda

fish louse – Argulus foliaceus Cyclops sp

Sketch in eyes and suckers of fish louse.

What animals are parasitised by crustaceans?

Magnification:

Parasitic types of Crustacea: 1. Lernaea cyprinacea, 2. Ergasilus sieboldi, 3. Linguatula serrata

1. 2. 3.

nauplius Scheme of the branched appendage

http://www.biolib.cz/cz/taxon/id32684/

http://www.biolib.cz/cz/taxon/id32682/

Name: Group:

31

Phylum: Arthropoda; subphylum:Crustacea; Class: Maxillipoda

Infraclass: barnacles – Cirripedia

barnacle – Balanus sp. and Sacculina sp. in a crab

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:

Zvětšení:

Macroscopic.

Barnacles attached to a snail shell and Schee of living barnacle.

crab Pachygrapsus infected by Sacculina

Name: Group:

32

Phylum: Arthropoda; subphylum: Crustacea; Class: Malacostraca

Order: Amphipoda order: Isopoda

aquatic Gammarus sp. aquatic Asellus aquaticus; terrestric Oniscus

asellus

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:

Magnification:

Gammarus sp.

Aquatic sowbug

(Asellus aquaticus)

Name: Group:

33


Order: Decapoda

mantis shrimp – Squilla mantis, hermit crab (Eupagurus sp.)

crabs (Maja sp., Pachygrapsus sp.), shrimp (Palaemon sp.)

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?

Macroskopic.

Name: Group:

34

Spiny lobster Palinurus


Order: Decapoda

Norway lobster – Nephrops norvegicus

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

Macroskopic.

dorsal view (tergites)

ventral view (sternites)

phylum: arthropoda ; 23

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