1 / 27

ZOO 115 Invertebrate Zoology

ZOO 115 Invertebrate Zoology. Subphylum Crustacea. Antennae. http://www.mov.vic.gov.au/crust/lobbiol.html. Arthropoda – Subphylum Crustacea. ~ 42,000 species Major trophic link between primary producers (phytoplankton) and higher level consumers Mostly aquatic Three part brain

rpruitt
Télécharger la présentation

ZOO 115 Invertebrate Zoology

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. ZOO 115 Invertebrate Zoology Subphylum Crustacea

  2. Antennae http://www.mov.vic.gov.au/crust/lobbiol.html Arthropoda – Subphylum Crustacea • ~ 42,000 species • Major trophic link between primary producers (phytoplankton) and higher level consumers • Mostly aquatic • Three part brain • Two pair of antennae • Tactile • Chemosensory • Many legs • Mostly separate sexes

  3. Subphylum Crustacea Shrimps and shrimp-like animals

  4. Subphylum Crustacea Lobsters and crawfish

  5. Crabs Subphylum Crustacea

  6. Nauplius larvae http://meso.spawar.navy.mil/Newsltr/Images/fairyshrimp.jpg http://www.gslyc.org/images/FAQ/ARTEM2.jpg Brine Shrimp http://www.palaeos.com/Invertebrates/Arthropods/Images/nauplius.jpg Fairy shrimp Class Branchiopoda Order Anostraca • Can tolerate desiccation and high salinity • 15-30 mm in length • Elongate shrimp-like bodies without a carapace • Have stalked compound eyes • Most are suspension feeders • Swim ventral side up • Use their thoracic appendages for capturing food particles • Food is passed to a central groove, encased in mucus and moved forward to mouth. • Gonochoric • Nauplius larvae

  7. Order Notostraca Triops (tadpole shrimp) http://www.museumonline.at/2000/bratislava/aqua/AquaSlowakisch/TriopsSite/Triops.JPG Class BranchiopodaOrder Notostraca • Tadpole shrimps • None occur in oceans • Feed on organic matter in sediments; some are predators or scavengers • Characteristic broad shield-like carapace and long caudal rami • Triops considered a major pest in rice fields

  8. http://www.gpmatthews.nildram.co.uk/animalcules/D_pulex_09.jpghttp://www.gpmatthews.nildram.co.uk/animalcules/D_pulex_09.jpg http://homepage.univie.ac.at/erich.eder/UZK/bilder/et1.jpg Conchostraca Clam shrimp Cladocera Daphnia (water flea) Class BranchiopodaOrder Diplostraca • Clam shrimps and cladocerans • Mostly freshwater • Scavengers, predators, detritivores, and suspension feeders • Well developed clam-like carapace • All have a dorsal organ that could function as: • Salt gland • Neck Gland • Adhesion • Swim with their powerful second antenna

  9. Normal conditions • Females make eggs that hatch without fertilization and become females (2N) • When environmentally stressed • Females produce eggs that hatch into haploid males. • Once the males become mature, the Cladocerans can reproduce sexually. Parthenogenesis in Cladocera Class BranchiopodaOrder Diplostraca • Sexes • Hermaphroditism • Gonochorism • Type of reproduction • Monosexual -Parthenogenesis • Bisexual reproduction - normal sexual reproduction • Eggs • Summer - thin-shelled • Winter - resting

  10. Population all females http://www.gpmatthews.nildram.co.uk/animalcules/D_pulex_09.jpg Egg Produces Female identical to adult Cladocera Daphnia (water flea) Cladoceran – reproductive strategies Stable conditions

  11. Population all females http://www.gpmatthews.nildram.co.uk/animalcules/D_pulex_09.jpg Mates with female Egg Produces new females but different genetically from adult Produces Female Swims to new area Produces Male Cladocera Daphnia (water flea) Cladoceran – reproductive strategies Unstable conditions

  12. * Usually • Head - 5 • Thorax - 8* • Abdomen - 6* • Telson - 1 http://mainegov-images.informe.org/dmr/rm/aquarium/teachers_guide/ lobster_dorsal_view.jpg http://mainegovmages.informe.org/dmr/rm/aquarium/teachers_guide/lobster_dorsal_view.jpg Antenna Pleopod Telson Mandible Maxilliped Subphylum CrustaceaClass Malacostraca • Number of segments • Appendages • Head - sensory and feeding • Thoracic - crawling or grasping • Abdominal(unique to this Class and Remipedia) - swimming and copulation

  13. Stalked compound eye naupliar eye http://www.dpo.uab.edu/~acnnnghm/BY255L/BY255LImages/Arthropoda/Squillaempusa-1.jpg Class MalacostracaOrder Stomatopoda • Mantis shrimps • Specialized predators • No cephalothorax • Head, thorax and abdomen • Two large stalked compound eyes and a third medial naupliar eye

  14. Specialized prehensile raptorial claws http://www.ucmp.berkeley.edu/arthropoda/crustacea/malacostraca/eumalacostraca/stomatopodamm.html Class MalacostracaOrder Stomatopoda • Triramous antennae • Has abdominal gills like isopods • Enormous digestive cecum • Very well developed heart and hemal system

  15. http://www.awi-bremerhaven.de/Eistour/krill-d.html Feeding basket Class Malacostraca Order Euphausiacea • Krill • All pelagic • Major source of food for whales, squids and fishes • Thoracic gills external to carapace

  16. Carid Shrimp Note than third segment is NOT on top of segments 2 and 4 Carid Shrimp Palinura – note that the first three periopods are NOT chelate http://www.fao.org/docrep/T0726E/t0726e0o.gif Phyllosoma larve Thalassinidea – Ghost shrimp Penaeid Shrimp Astacidea - First three periopods chelate http://ccma.nos.noaa.gov/products/biogeography/efh/gom-efh/pazte.gif Stenopodidea Cleaner shrimp http://www.crustacea.net/crustace/images/caride-3.gif http://www.mov.vic.gov.au/crust/images/crusties/other1/z0000249.jpg http://www.uh.edu/engines/lobsteranatomy.jpg http://www.fa.gov.tw/eng/illustrated/images/a64a.gif http://www.msu.edu/course/isb/202/ebertmay/drivers/Phyllosoma.jpg Class MalacostracaOrder Decapoda • Shrimp-like • IO Caridea (shrimp) • SO Dendrobranciata SF Penaeoidae (prawns) • IO Stenopodidea • Lobster-like • IO Astacidea (lobster) • IO Palinura (spiny and slippery lobster) • IO Thalassinidea (ghost shrimp)

  17. Brachyura Note that the fifth pleopod is easily visible Anomura – hermit crab Anomuran Porcelain crab zoea Anomura – note 5th pleopod is greatly reduced and not readily visible http://www.afsc.noaa.gov/kodiak/images/photo/crabak_herm.jpg http://www.blue-crab.net/zoea.gif http://www.njscuba.net/biology/sw_crabs.html http://www.scielo.br/img/fbpe/rbbio/v59n1/a09f5.gif • Crab-like • IO Brachyura (True crabs) • IO Anomura

  18. http://www.uh.edu/engines/lobsteranatomy.jpg Class MalacostracaOrder Decapoda • Feeding • 6 pair of feeding appendages • 1 pr Mandibles • 2 pr Maxillae • 3 pr Maxillipeds • Most predators and/or scavengers, some suspension feeders, some detritivores, some herbivores, some onmivores

  19. Up to 24 pair of gills http://mainegov-images.informe.org/dmr/rm/aquarium/teachers_guide/lobster_internal_anatomy.jpg http://www.vims.edu/adv/ed/crab/guts20b.jpg Class MalacostracaOrder Decapoda • Internal anatomy

  20. http://www.indigo.com/software/gphpcd/zoo73-76.html Class MalacostracaOrder Decapoda • Sense organs • Legs • Antennae • 1st • Stalked compound eye

  21. http://tolweb.org/tree/ToLimages/Chromat.gif Class MalacostracaOrder Decapoda • Chromatophores • Shrimps especially good at changing color

  22. Class MalacostracaOrder Decapoda • Reproduction • Most separate sexes (gonochoric) • Sperm transfer – indirect (spermatophores) • Many have copulation • Bachyurans may block fertilization for up to a year following copulation

  23. Planktonic larvae of the spiny lobster Phyllosoma larvae http://mainegov-images.informe.org/dmr/rm/aquarium/teachers_guide/lobster_internal_anatomy.jpg Class MalacostracaOrder Decapoda • Lobster • Life cycle

  24. http://www.mdsg.umd.edu/crabs/stock_enhance/fig4.gif Class MalacostracaOrder Decapoda • Crab • Life cycle

  25. http://entomology.tfrec.wsu.edu/pearent/images/misc/Crustacea/mysid.gifhttp://entomology.tfrec.wsu.edu/pearent/images/misc/Crustacea/mysid.gif Class Malacostraca Order Mysida • Mysid shrimps • Most 2-30 mm • Gnathophausia - 35 cm • Omnivorous suspension feeders • Well developed carapace and tail fan

  26. bioephemera.com/wp-content/uploads/2007/09/380353_028542ead3.jpgbioephemera.com/wp-content/uploads/2007/09/380353_028542ead3.jpg Class Malacostraca Order Isopoda • Isopods, pill bugs • ~10,000 sp • 0.5 – 50 cm • Virtually all habitats • Flattened dorso-ventrally

  27. Lives in a Salp Gammarid Amphipods Caprellid amphipod Hyperiidea amphipod Class Malacostraca Order Amphipoda • Amphipods • ~8000 sp. • 1mm-25 cm • In almost every habitat • Flattened laterally • Carapace absent • Gills thoracic

More Related