13-Elopomorpha

13-Elopomorpha - Elopomorpha (Teleostei) Lec-13; Chap 14...

Info iconThis preview shows pages 1–19. Sign up to view the full content.

View Full Document Right Arrow Icon
Click to edit Master subtitle style 9/14/10 Elopomorpha (Teleostei) Lec-13; Chap 14 DOF
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Click to edit Master subtitle style 9/14/10 Elopomorpha (Teleostei) Lec-13; Chap 14 DOF
Background image of page 2
9/14/10 Elopomorpha (Teleostei)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Elopomorpha: eels and tarpons Elopiformes (8 spp.): Elopidae and Megalopidae Albuliformes (30 spp.): Albulidae, Halosauridae,Notacanthidae Anguilliformes (738spp): Anguillidae, Muraenidae, Ophichthidae, Congridae and 11 others. Saccopharyngiformes (28): Saccopharyngidae and 3 others
Background image of page 4
9/14/10 Elopomorpha Mostly marine, fossils dating back to the Jurassic 4 orders, 25 families and about 804 species
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Elopomorpha Extremely diverse morphologically, include tarpons, bonefishes, true eels, gulpers and spiny eels.
Background image of page 6
9/14/10 Elopomorpha All linked together by a leptocephalus larvae
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Leptocephalus - larvae Planktonic larvae – they are thin, transparent, and leaflike drifting passively with currents. Leaflike body shape allows absorption of dissolved organic matter
Background image of page 8
9/14/10 Leptocephalus larva
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Leptocephalus - larvae Once thought to comprise its own taxonomic group Can live 2-3 years in some anguillid species Lack of red blood cells make them translucent
Background image of page 10
9/14/10 Leptocephalie - larvae All Elopomorpha have leptocephalus larvae, although they are distinctive Elopiform larvae have a forked tail and a distinct dorsal fin, eel larvae have a rounded “tail” that merges with an elongate dorsal fin.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Diversity of
Background image of page 12
9/14/10 Elopomorpha All shallow water tropical or subtropical marine forms that occasionally enter fresh or brackish water http://www.metacafe.com/watch/bg-302
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Elopomorpha Have thin, riblike, epipleural intermuscular bones that extend from the vertebral column to the surrounding trunk musculature. These are the small bones in the meat of primitive teleosts that make them difficult to fillet and eat.
Background image of page 14
9/14/10 Subdivision Elopomorpha Order Elopiformes (tarpons, ladyfishes) Order Albuliformes (bonefishes, spiny eels) Order Anguilliformes (eels) Order Saccopharyngiformes (gulpers)
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Elopiformes Primitive features (1) gular bone on the underside of throat, lost in all other advanced teleosts; (1) High number of branchiostegals rays in the throat (10-35 vs 5-7 most advanced forms); (3) Inclusion of the maxilla in the gape, two biting bones in the upper jaw rather than one (4) Heavy ganoin scales (found in gar and bichirs)
Background image of page 16
9/14/10 Elopiformes Eights species, two families All streamlined, predatory fish with large cycloid scales and deeply forked tails Gular bone present Heavy bony ganoin scales Females can have >12 million eggs Pelagic fishes that superficially resemble herring
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/14/10 Elopiformes Elopidae Megalopidae Lady fishes; tenpounders Tarpon
Background image of page 18
Image of page 19
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 66

13-Elopomorpha - Elopomorpha (Teleostei) Lec-13; Chap 14...

This preview shows document pages 1 - 19. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online