1 / 21

Lab 6: Senses, Suckers, and Catfish

Lab 6: Senses, Suckers, and Catfish. channel catfish ( Ictalurus punctatus ). golden redhorse ( Moxostoma erythrurum ). Auditory Systems. Inner ear Otolith rests within membranous labyrinth Swim bladder Diverticulum Clupeidae Weberian Apparatus

kieu
Download Presentation

Lab 6: Senses, Suckers, and Catfish

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. Lab 6:Senses, Suckers, and Catfish channel catfish (Ictalurus punctatus) golden redhorse (Moxostoma erythrurum)

  2. Auditory Systems • Inner ear • Otolith rests within membranous labyrinth • Swim bladder • Diverticulum • Clupeidae • Weberian Apparatus • Superorder Ostariophysi (Cypriniformes, Siluriformes)

  3. Weberian Apparatus • Bony connection between swimbladder and inner ear

  4. Mechanoreception • Lateral line

  5. Electroreception • Ampullae of Lorenzini • Sharks and kin • Electroreceptive buds • Lampreys • Cutaneous • Knifefishes

  6. Chemoreception • Olfaction “smell” • Nares • Used for food detection, orientation, predator avoidance • Gustation “taste” • Around mouth • Barbels • Skin surface • Gill arches Nare function of american eel (Anguilla anguilla)

  7. Nares of different fishes • The # of lamellae (folds) usually correlate with the ability to smell • Range from 0 (seahorses) to 230 (porgy).

  8. Vision • Fish have a 97.2° window of sight • Most can see color • Most teleosts are near-sighted

  9. Eye adaptations

  10. Fish Identification Catostomidae and Ictaluridae

  11. Family Catostomidae (suckers) • Restricted to N. America • 13 genera, 72 species • We will study 5 genera • Characterized by fleshy, subterminal to inferior mouths • Fins in primitive position White sucker (Catastomus commersoni)

  12. Smallest and Largest Agamyxis albomaculatus Silurus glenis

  13. Genus Carpiodesquillback (Carpiodes cyprinus) • Have extended ray on dorsal fin • Subtriangular subopercle

  14. Genus Catostomuswhite sucker (Catostomus commersoni) • Lips are very papillose (bumpy)

  15. Genus Moxostoma • Relatively large scales. Deeper body than Catostomus shorthead redhorse (Moxostoma macrolepidotum)

  16. Genus Hypenteliumnorthern hog sucker (Hypentelium nigricans) • Have indented head

  17. Genus Ictiobussmallmouth buffalo (Ictiobus bubalus) • Looks like a carp with no barbels or spines • Semicircular Subopercle

  18. Family Ictaluridae(catfishes) • 7 genera, 45 species • Restricted to N. and C. America • We will study 3 genera stonecat (Noturus flavus)

  19. Genus AmeiurusbullheadsAll have bulky heads and rounded caudal fin black bullhead (Ameiurus melas) yellow bullhead (Ameiurus natalis) brown bullhead (Ameiurus nebulosus)

  20. Genus Noturus(madtoms) • Adipose fin and caudal fin connected Tadpole madtom (Noturus gyrinus)

  21. Genus Ictaluruschannel catfish (Ictalurus punctatus) • Deeply forked tail. • Short Adipose Fin

More Related