17-postDeep Sea-Neoteleosts 2016 12.05.38 PM - Neoteleostei...

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Neoteleostei+ Deep SeaLec 17-DOF 14;18
Assignment 2Great Job (those who submitted on time)Please resubmit to me by Mondaywithtrack changes– don’t leave any sectionsblankPlease then submit to ADW. I will post gradeonce submitted.
Assignment 3- November2315min oral presentation (12 + 3min for Qs) about ageneral topic in ichthyology not already covered inthe course.Not a group project10 bonus points on the assignment if you practicefirst with a partner at the CxC studio. (November 23)Make an appointment/-STUDIO 151 - presentation roomSend me topic by Monday 16 – first come first serve
Assignment 3Expect a reference for facts you say, on the slideShould have list of references at the end of thepresentation,onlast slide12min presentation, with 3 min for Qs.If too short, not goodWill be cut off at 15min, penalized for not leaving time for Q’sAudience will be given grade sheetsParticipation points for “good” QsAnonymous to presenter, but not to me.E-mail me presentation by classtime on 23rd as pptSize limit, reduce file size to under 15MB
Neoteleostei
Neoteleostei(Teleostei:Eutelostei)Neotelosts - eight subordersSix of them specialized deep sea and pelagicsuperordersTwo very diverse, advanced superorders, theParacanthopterygians and Acanthopterygians
Monophyly based onfour skull and jawcharacters1 - Unique vertebralarticulation with theskull(first vertebraearticulates with thebasioccipital andexoccipitals versusjust unpairedbasioccipital as is thecase with primitiveteleosts)Neoteleostei(Teleostei:Eutelostei)
Monophyly based onfour skull and jawcharacters2 – Retractor dorsalis(connects vertebralcolumn with dorsalelements of upperpharyngeal jaws andpulls those jawsposteriorly)Neoteleostei(Teleostei:Eutelostei)
Monophyly based onfour skull and jawcharacters3 –shift in insertion ofinternal levators(originate on base ofthe skull and lifts thepharyngeal jaws)Neoteleostei(Teleostei:Eutelostei)
Monophyly based onfour skull and jawcharacters4 –unique toothattachment(hingedattachment, allowsteeth to be depressedtowards the back ofthe mouth)Neoteleostei(Teleostei:Eutelostei)Stomiiform condition -- axis of rotation onanterior border, soft tissues on posterior, preycan be slipped off of the teeth only in thedirection of the stomach
TrendsMore anteriorly located pelvicsand morelaterally located pectoralsAcellular bone present in mostneoteleosts(most primitive groups havebone cells in skeletal material)Neoteleostei(Teleostei:Eutelostei)
Stomiiformes 391 spp. composed of 5 deep-sea familiesMesopelagic and bathypelagic (200-4000mdepth)Have large mouths, long teeth uniquelyattached to jaw bones, unique photophoresStomiiformes(Neoteleostei:Stenopterygii )
Photophores (lightorgan)Not homologousacross groups,bacterially derivedin many species.

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Term
Fall
Professor
Chakrabarty
Tags
Ichthyology, The American, Actinopterygii, Deep sea, Fish anatomy, Anglerfish

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