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Co-evolution of plants and their pollinators

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Presentation on theme: "Co-evolution of plants and their pollinators"— Presentation transcript:

1 Co-evolution of plants and their pollinators
A. Co-evolution B. Plant reproductive biology C. The problem of pollen transfer 1. Attractants and rewards D. Pollen vectors and syndromes 1, Biotic vectors: bees, moths, butterflies, birds, bats, others 2. Abiotic vectors: wind and water 3. Pollination by deceit 4. Reward thieves

2 What would your grade be if grades were assigned today?
Calculation of percentage of points earned so far: Total points out of 300 = Quiz1 + Quiz2 + Quiz3 + Quiz4 + Exam1(3.03) +Exam2(3.03) Points earned/300 = Percent Approximate Grades: 78% - 100% A 65% - 77% B 47% - 64% C less than 47% D

3 male female Attractants Rewards color nectar scent pollen shape shelter chemicals heat

4 Pollination by bees

5 Nectar guides direct pollinators to rewards in the flower.
In wild geranium, the nectar guides are only visible under ultra-violet light UV light Natural light

6 Some flowers provide a landing pad for pollinators

7 A honeybee with full pollen baskets

8 Pollination by moths

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10 Pollination by butterflies

11 Hummingbird pollination

12 A sunbird pollinating a bird-of-paradise flower

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14 Bat pollination

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16 Pollination by marsupials and spiders: it’s rare but it happens!

17 The generalist pollination syndrome has something for everyone

18 Wind pollination

19 Wind borne pollen has been found at ft altitude and as much as 3000 miles from the nearest possible source

20 Hydrochory - pollination by water in Vallisneria

21 A carrion mimic that is pollinated by carrion flies

22 Hugo deVries with a stinking corpse lily

23 A flower that mimics the gills of a fungus

24 A flower with fake pollen

25 Deceit pollination in bucket orchids
1 2 3 Deceit pollination in bucket orchids

26 Pseudocopulatory orchids
These are flowers This is not!

27 A nectar robber taking a reward without pollinating


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