Society for Conservation Biology Auburn University Chapter Guest
Society for Conservation Biology Auburn University Chapter Guest Speaker: Dr. David Steen “Road mortality and freshwater turtle conservation in North America” WHERE? 112 Rouse Life Sciences WHEN? TUESDAY Mar. 3 6: 00 -7: 00 PM Check us out on Facebook Also: Info on Tigers 4 Tigers plans for spring semester!
Biotic Pollination • Plant-animal interactions, often mutualisms Mystery slide…. .
Outcrossing • Favor outcrossing?
Outcrossing • Favor outcrossing: • 4) Self-incompatibility: stop
Pollination syndromes • Pollination Syndrome: flower & pollinator • Disclaimer: We make broad generalizations and exceptions exist to most statements!
Pollination syndromes • Bee pollination • Bees: – intelligent, agile – Good sight (incl. European honeybee Halictid bee Leafcutter bee Bumble bee
• Flowers: – – Pollination syndromes Colorful (not red) Landing platform: Mildly fragrant Often nectar guides: Orchid flower with nectar guides (lines) on petals Petals in visible light (top) and UV (bottom)
Pollination syndromes • Fremontodendron decumbens (endangered chaparral shrub) flowers • UV reflectance photo (right) Tony Danza? ?
Pollination syndromes • Beetle pollination • Beetles: – Clumsy, dumb – Poor vision,
Pollination syndromes • Bird pollination: • Flower-visiting birds: – Agile, long beak – visual: see red – poor “smell”
• Flowers: Pollination syndromes – red/orange – Nectar (m Aloe ? ? ?
Pollination syndromes • Butterfly pollination • Butterflies: good vision/smell, long tongue – Don’t hover well tongue extended coiled tongue
Pollination syndromes • Flowers: – Color varies (blue, yellow, orange) Phlox pilosa
Pollination syndromes • Bat pollination – Nocturnal: sight good (
• Flowers Pollination syndromes – Open night: light color – Lots – May be pendant (). Parkia flowers
Pollination syndromes • Bat pollination: Mainly tropical • In U. S. , saguaro Saguaro cactus Saguaro flowers
Pollination syndromes • Moth pollination • Moths: – Sight good (but
Pollination syndromes • Flowers: – Open night – Sweet Night blooming jasmine
Pollination syndromes • Moth story: nectar spur • Nectar spur: long pouch (nectar @ bottom) Nectar spurs on columbine
Pollination syndromes • Moth story: nectar spur • Nectar spur: long pouch (nectar @ bottom) • Selection for
Pollination syndromes • Angraecum orchid (Madagascar) Nectar spur almost 1 ft. long!
Pollination syndromes • Flesh fly pollination – Fly: Good smell • Flowers Stapelia flower Asimina triloba
Fly flower: Rafflesia • Ex, Rafflesia • Root parasite • Largest flower Tony Danza? 2014 Some tourist guy….
Pollination syndromes • Largest inflorescence • Corpse-flower (titan arum) Inside view �spadix and spathe
Sexual Mimics • Fls. look/smell like female bee/wasp – Study: Sexual mimic orchids Male “mating” with flower!
Pollination syndromes • Grass pink orchid (Calopogon): – Fake stamens (on labellum) – No reward Most orchids…… Calopogon orchid (fl. upside down!)
Biotic Pollination • Mutualism: (+, +) interaction • Do animal cheaters prosper? ? Floral robbers! Cool robbers…
Biotic Pollination • Floral Larceny: Visitor – Ex, snapdragon: • Is robbing bad? ? (nectar robbing)
Biotic Pollination • Neg. or pos. ! • Pos. : “legitimate”
Biotic Pollination • Cheaters prosper? ? Animal cheaters. • Yucca moth story • Yucca filamentosa
Biotic Pollination • Pollination: yucca moth • Behavior: female
Biotic Pollination • Mutualism: plant pollinated, moth young eat seeds
Biotic Pollination • Abort frs. w/ few seeds!
Biotic Pollination Interesting plant-animal interactions, often mutualisms Fish affect pollination? Mystery slide…. .
Biotic Pollination • Fish affect pollination? • Peelbark St. John’s wort (Hypericum fasciculatum) • Pond margins
Biotic Pollination • Trophic cascade: Effects
Ch. 7: Plant Growth and Reproduction (Seed Dispersal)
“Thinking” like a plant…. • Coast redwood – 2, 000 yrs. : to • Safe site: location suitable
Why disperse? • 1) Escape competition (parent/siblings) • Seed shadow: pattern Usually “acorn doesn’t fall far from tree” Bristlecone pine: lives up to 5000 years!
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