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Week 7: Euteleostei Ostariophysi Protacanthopterygii Esociformes

Week 7: Euteleostei Ostariophysi Protacanthopterygii Esociformes. Euteleosts = “true teleosts”. Protacanthopterygii. Osmeriformes. Esociformes. Salmoniformes. Esociformes ~ 2 families. Esocidae ~5 sp. redfin pickerel ~1 ft. pikes (introduced). muskelunge ~60 lbs; 3 ft.

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Week 7: Euteleostei Ostariophysi Protacanthopterygii Esociformes

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  1. Week 7: Euteleostei Ostariophysi Protacanthopterygii Esociformes

  2. Euteleosts = “true teleosts”

  3. Protacanthopterygii Osmeriformes Esociformes Salmoniformes

  4. Esociformes ~ 2 families

  5. Esocidae ~5 sp. redfin pickerel ~1 ft. pikes (introduced) muskelunge ~60 lbs; 3 ft pickerels (native)

  6. gar pike-characin pike or pickerel needflefish pike killifish barracuda pike-head Example: convergent evolution distant relatives converge ‘lie-in-wait’ or ‘ambush’ predators

  7. northern pike Esox lucius

  8. northern pike fingerling

  9. Umbridae ~5 sp. (eastern U.S.) mudminnows (Umbra) Umbra pygmaea ambush predators ~ 8 in burrows in mud and breathes air

  10. Umbridae (western U.S.) blackfish (Dallia) low oxygen habitat

  11. habitat • activity role of Hb and pH (via CO2) species A Sacramento blackfish

  12. species A Text: Fig. 4.4A (Hb pH-induced effects on “inactive” fish) Alaska blackfish Dallia pectoralis

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