Arthropoda_I - QUIZ 5 Spelling Capitalize ALL...

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Unformatted text preview: QUIZ 5 Spelling Capitalize ALL taxonomic names Answer the RIGHT quesBon Reminders: -Lecture Midterm practical next week -clean up lab before you leave! -office hours 1. ClassificaBon   K: Animalia   P: Arthropoda   sP: Trilobitomorpha   sP: Chelicerata       C: Merostomata (horseshoe crabs!) C: Pycnogonida (sea spiders!) C: Arachnida (scorpians, spiders, ticks, mites)   sP: Crustacea           C: Branchiopoda (fairy shrimp ­ Artemia; water fleas ­ Daphnia) C: Ostracoda (seed shrimp) C: Copepoda (copepods) C: Cirripedia (barnacles) C: Malacostraca (crabs, crayfish, lobsters, amphipods, roly ­polies) 2. OrganizaBon   organ level   Segmentation (generic term)   Metamerism (metameres)   type of segmentation with repeating organs and systems   Tagmatization (tagmata)   type of segmentation where metameres are specialized (and sometimes fused) to work together to perform a specific function 3. Embryonic Development   triploblastic   eucoelomate   Protostomes: schizocoelous, spiral & determinate cleavage 4. Symmetry   Bilateral   homology Individual Different Origin SAME FuncBon Same or different Serial Homology SAME Different segment, same ancestral structure Same or different  ­Cheliped of lobster & swimmeret of lobster Analogy Different DIFFERENT SAME  ­Bird wing & insect wing  ­Fish fin & whale flipper Homology Example  ­Whale flipper, bat wing & human hand 5. Skeleton   Exoskeleton   Ecdysis (molting)   Apodeme   site for muscle attachment on the exoskeleton 6. Movement/LocomoBon   modified appendages for locomotion (see sP)   Muscles work against exoskeleton 7. Sensory/Nervous System   ventral nerve cord w/ ganglia   various complex sensory structures in each class 8. DigesBon/Feeding   complete gut   modified appendages for feeding (see sP) 9. ExcreBon/OsmoregulaBon   Diverse within phylum   Green glands and nephridia (marine)   Malpighian tubules (terrestrial) 10. Circulation   Open w/ dorsal heart   Hemocoel   blood filled sinus (origin from blastocoel!) 11. RespiraBon   Book gills or book lungs (Chelicerata)   Gills (Crustaceans)   Some have tracheal system similar to insects 12. Reproduction   Mostly dioecious   Spermatophores (sperm packages)   Ovigers (Pycnogonida) sP: Trilobitomorpha (fossil) •  enormous, diverse group that used to dominate marine systems • extinct SP:Chelicerata (horseshoe crabs, spiders, scorpions, Bcks, mites, sea spiders)   marine and terrestrial   chitinous exoskeleton   2 tagmata (p. 85)   prosoma ­ sensory, feeding, locomotion   opisthosoma ­ digestion, reproduction, respiration, excretion   modified appendages   no antennae (unique in Arthropoda)   chelicerae: feeding structures (pincers, hollow fangs)   pedipalps: 1st pair of legs, modified for specific function(Merostomata)   4 pairs of walking legs SP: Chelicerata (horseshoe crabs) C: Merostomata   have not changed for 200 million years!   Marine   Abdominal appendages modified into gill opercula   respiration: book gills   4 eye spots   sexual dimorphism/dioecious   males clasp females w/ modified pedipalps for external fertilization   *be able to differentiate between male and female before you leave today!   Hemocyanin: copper based, not iron based   Used in medical research: detect chemicals in blood, amoebocytes defend against bacteria with clotting factor SP: Chelicerata C: Pycnogonida (sea spiders!)   marine   suctorial proboscis   extract juices from soft bodied animals   Ovigers   male leg appendages to carry eggs   Lack excretory and respiratory systems – occurs by diffusion   Most abundant in polar waters SP: Chelicerata C: Arachnida (scorpions, spiders, Bcks, mites)   terrestrial (adaptations!)   book lungs   trachea system   waxy epicuticle (function?)   mostly carnivorous   external digestion via chelicerae   many ganglia fuse into brain area   sensory structures   sensory hairs, eyes   Sand ­dwelling scorpions sense surfacte waves   Dioecious   indirect sperm transmission with spermatophore is common   Some have courtship ritual   Scorpions are viviparous SP: Crustacea (shrimps, crabs, lobsters, brine shrimp, barnacles, etc)   most marine, some fresh water   calcified exoskeleton (harder than chitinous)   2 tagmata   cephalothorax (fusion of head & thorax)   Abdomen   respiration   gills (marine) lungs (terrestrial) SP: Crustacea (shrimps, crabs, lobsters, brine shrimp, barnacles, etc)   modified appendages ­ understand structure/function   each tagmata has own pair of appendages modified for certain functions (ie. feeding, locomotion)   Cephalothorax: head       2 pair antennae (antennules & 2nd antennae) mandibles ( jaw) 1st and 2nd maxillae (cut food, behind mandibles)   Cephalothorax: thorax     3 pair maxillipeds (mouthparts; manipulate food) 5 pair chelipeds (walking legs); claw is 1st pair   abdomen   6 segments     1 ­5 have paired swimmerets (1st modified in males for sperm transfer) 6th segment has pair of uropods and a telson Crustacea SP : C: Branchiopoda (Daphnia, Artemia)   “gill ­foot”   mostly freshwater, form basis of food chains   uniformly segmented body   large # of similar appendages (filter feeding, locomotion, respiration)   Cryptobiotic eggs C: Ostracoda (seed shrimp) Crustacea SP :   ‘bivalve’ carapace encloses body ­ muscles close, elastic hinge opens   Cryptobiotic eggs SP: Crustacea C: Copepoda (copepods)   dense populations in marine & fresh water   most planktonic and many are ectoparasites   single medial eye & long antennules   Important plankton base for food webs C: Cirripedia (barnacles) SP: Crustacea   stalked (gooseneck) or stalkless (acorn)   heavy calcareous shell & highly modified exoskeleton   Sessile filter feeders   kick legs (cirri) to create water currents to capture prey   planktonic larvae land on head, settle, secrete shell   Monoecious: use REALLY long penis to cross fertilize   Cool parasitic forms! C: Malacostraca SP: Crustacea (shrimp, crabs, lobsters, amphipods, roly ­polies)   approx. 70% of the Crustaceans   pill bugs/roly ­polies are TERRESTRIAL Malacostracans   http://www.youtube.com/watch?v=zcWxAfl0okE Subphylum Trilobitomorpha fossil Subphylum Chelicerata a) Class Merostomata horseshoe crab: m/f designation b) Class Arachnida demo slides: mite & tick preserved specimens c) Class Pycnogonida preserved specimens Subphylum Crustacea a) Class Branchiopoda demo slide: Daphnia w.m. b) Class Ostracoda demo slide: Ostracoda w.m. c) Class Copepoda demo slide: Cyclops w.m. d) Class Cirripedia preserved specimens Subphylum Crustacea cont. e) Class Malacostraca demo slide: Gammarus w.m. preserved specimens Sea roach and Mantis shrimp! dissections: crab: m/f designation (Fig. 8.7, 8.8, 8.13, 8.14) label: appendages, cardiac stomach, pyloric stomach (add on p.98), gastric ossicles, heart, gills, digestive gland, reproductive organs, determine male from female crayfish: m/f designation Fig. 8.7, 8.8, 8.9, 8.10, 8.11, 8.12 label: external structures (p. 95), green gland, digestive gland, stomach, heart, gills, determine male from female ...
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  • Fall '11
  • Dr.Tschinkel
  • Crustacean, heart00     Hemocoel00, opercula00     respiration, based00     Used00, shell00     Monoecious

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