MBM Study Guide MT-1 F09

MBM Study Guide MT-1 F09 - MARINE BIRDS & MAMMALS FALL...

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Study Guide for Midterm I 1. Mating systems lecture corrections: (1) The chondrichthyan clasper is a modified pelvic fin (I mistakenly labeled it pectoral fin in the diagram I drew on the board). (2) The Nereid worm that forms mating swarms in the Salton Sea is Neanthes , not Nereis . 2. How egg and sperm are brought together in oysters, Neanthes, palolo worms, acorn barnacles. a. Oysters: release gametes in water b. Neanthes: swim up and release gametes on surface of water c. Palolo worms: gonaded segment breaks off by itself and goes to surface by itself d. Acorn barnacles: “search out females” by extending (hermaphrodites) 3. Fertilization, incubation, and parental care in fish, amphibians, reptiles, birds, and mammals. Internal vs external fertilization. Examples given: salmon, stickleback, mouth-breeding cichlid, seahorse, condricthyans, anurans, salamander. a. Fish (Salmon): external fertilization b. Amphibians (Salamanders): internal fertilization (spermatophore) c. Reptiles: internal fertilization d. Birds: internal fertilization, external incubation e. Mammals: internal fertilization, internal incubation 4. Monogamy, polygamy, polygyny, polyandry, promiscuity. a. Monogamy: long term relationship with one mate b. Polygamy: multiple mates c. Polygyny: multiple mates for male d. Polyandry: multiple mates for female e. Promiscuity: one night stand 5. Cuckoldry and paternity in monogamous species a. Monogamous species: mate yr after yr, meet at old nest site i. Cuckoldry: cheating 6. Incidence of monogamy in birds vs mammals. a. Monogamy in birds: 90% + b. Monogamy in mammals: 3-4%
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7. Prevalence of monogamy, polygyny, and polyandry in human societies in 1938. a. Monogamy: 18% b. Polygyny: 81% c. Polyandry: 1% 8. Lesbian gulls of southern California. a. 2 gulls take care of a single nest (both females) 9. Know orders and families of marine birds and mammals. Also suborder for cetaceans. a. Cormorants (Family: Phalacoracidae) (Order: Pelecaniformes) b. Gulls (Family: Laridae) (Order: Charadriiformes) c. Tube Nosed Birds (Albatross) (Family: Dimedeidae) (Order: Procellariformes) d. Storm Petrels (Family: Hydrobatidae) (Order: Procellariformes) e. Auks/Murres/Puffins (Family: Alcidae) (Order: Charadriiformes) 10. Chordata, chordate, notochord. Segmentation and ossification of notochord. a. Notochord: segments into vertebral column 11. Scientific name, binomial, trinomial. When to use lower case, upper case, and italics in taxonomic names. a. Scientific name (always italicized) ex: Zalophus californicanus (CA Sea Lion) 12. Phylum, subphylum, class, order, family, genus, species, subspecies. 13. Study video handouts: Fishing for a Living, Wolves of the Sea, Air Jaws, Tidal Seas, Penguins Under Siege 14. Fishing for a Living slide show questions. 15. Distribution of extant and recently extinct Sirenians
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MBM Study Guide MT-1 F09 - MARINE BIRDS & MAMMALS FALL...

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