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INVASIVE SPECIES – Boyceville Invitiational – December 3rd 2016
Station 1:
1. Chilli Thrips
2. Scirtothrips dorsalis
3. Florida – landscape ornamentals and retail plants
4. Southeast Asia or India
5. piercing and sucking mouthparts cause damage by extracting the contents of
individual epidermal cells leading to necrosis of tissue
6. European Gypsy Moth
7. Lymantria dispar
8. over short distances occurs as newly hatched larvae spin short lengths of silken
thread which allow them to be blown by the wind, long distances on outdoor
household articles
9. place egg masses in kerosene or soapy water, burning egg masses, freezing
temperatures, burlap apron around tree, native predators (birds, mice, ground
10. fall webworms or eastern tent caterpillars
Station 3:
11. Hemlock Wolly Adelgid
12. sucks fluid from the base of hemlock needles. It may also inject toxins into the
tree as it feeds, accelerating needle drop and branch dieback
13. enters dormancy in hot summer months (halo of waxy wool around body)
14. all individuals are female with asexual reproduction
15. restore areas infected by replanting with native species (or those ecologically
similar) not impacted by the adelgid
Station 4:
16. pink hibiscus mealybug
17. Maconellicoccus hirsutus
18. injects a toxic saliva that causes malformations in leaves and shoots
(characteristic curling)
19. pesticides cannot easily penetrate the waxy layers on the body, cutting and
burning was not effective either
20. ants – harvest the honeydew excreted and protect from predation
Station 5:
21. Pterois volitans
22. 5 to 15 years
23. Indo-Pacific (South Pacific & Indian Oceans)
24. small fish, invertebrates, mollusks
25. true
Station 6:
26. Rusty crayfish
27. much of Minnesota, Wisconsin, Michigan, Illinois, Ontario, and portions of 17
other states
28. displace native crayfish, reduce amount/kinds of aquatic plants, decrease
density/variety invertebrates, reduce some fish populations
29. lakes, ponds, streams with rocks, logs or debris as cover
30. once hatched, young crayfish cling to the female's swimmerets for three to four
Station 7:
31. Phyllorhiza punctata
32. impacts shrimp industry by clogging nets and damaging fishing equipment
33. filter feeder – nematocysts to sting prey (zooplankton)
34. warm temperate seas, near the surface in murky waters near estuaries, wide
distribution along Australian coastal and lagoon waters (affected by low salinity)
35. free living medusa & sessile polyp
Station 8:
36. china, japan, korea
37. wildlife habitat, windbreaks, restore deforested and degraded lands & erosion
38. creates dense shade that hinders plant growth, produces lots of seeds (200,000)
39. can grow in unfavorable soils due to nitrogen fixing nodules. also drought
40. silvery scaling that covers the young stems, leaves, flowers, and fruits
Station 9:
41. Chinese tallow
42. invades stream banks, riverbanks, and wet areas like ditches as well as upland
sites. thrives in both freshwater and saline soils.
43. berries and sap have toxins & high quantity of acidic tannins in the leaves
44. true
45. seed-oil crop (candles, soap, cloth dressing and fuel from tallow), stillingia oil for
machines, lamps, varnishes and paints; converted to charcoal, ethanol and
methanol; possible substitute for petroleum?
Station 10:
46. Lepidium appelianum
47. Eurasia
48. contaminated alfalfa seeds
49. moist, alkaline
50. false
Station 11:
51. Kudzu
52. spreads by stolons (runners) that root at the node and by rhizomes
53. a. a fibrous knob of tissue that sits on top of the roots
b. it is the source for new vines
54. true
55. true
Station 12:
56. Euphorbia esula
57. white latex. Can cause irritation, blotching, blisters, and swelling in sensitive
individuals. diarrhea in cattle/horses.
58. the three-sided capsules explode when ripe, sending the enclosed seeds up to 15
feet from the parent plant. seeds are covered in a sticky gel that can easily attach to
animals and humans. seeds also float on water, and can be transported and
deposited by flood water.
59. Picloram (Tordon)
60. True
Station 13:
61. Didymosphenia geminata
62. silica
63. raphe
64. Soak and scrub all items for at least one minute in either hot (60 °C) water, a 2%
solution of household bleach, antiseptic hand cleaner, or dishwashing detergent.
65. cool, temperate regions. Low nutrient levels
Station 14:
66. Hydrilla
67. Florida – aquarium trade. deemed unsatisfactory and dumped into canal near
Tampa Bay
68. stratification of water column, decreased dissolved oxygen, block light, create
thick mats to obstruct boats, swimming and fish, decreased property value on
shorefront homes, waterfowl feeding areas and spawning sites, reduced weight/size
of fish
69. grass carp
70. it is a known bioremediation hyperaccumulator of mercury, cadmium,
chromium and lead
Station 15:
71. Linaria vulgaris
72. true
73. true
74. butter and eggs
75. forms large colonies, high seed production and rapid dispersal rate, along with
Station 16:
76. Siroccus clavigignenti juglandacearum
77. fungus
78. asexually by spores
79. Wisconsin
80. rain splash and wind
Station 17:
81. Orbivirus
82. causes foot lesions and animals shift weight frequently
83. biting midges, ticks or sheep keds
84. false
85. Europe/Mediterranean
Station 18:
86. Styela clava
87. filter feeder: zooplankton, phytoplankton, detritus
88. subtidal zone attached to rocks, pilings, floating docks, hulls of ships
89. 2-3 years
90. -2 to 27 C
Station 19:
96. Striga
97. true
98. 90,000-500,000
99. signaling molecules that promote striga seed germination
100. involves planting a species in an infested field that will induce the Striga seeds
to germinate but will not support attachment of the parasite
Station 20:
91. a. purple loosestrife (aesthetic)
b. nutria (economic)
c. starlings (cultural)
d. Asian beetle (transfer in packing material)
e. zebra mussel(ballast water)
92. $1.7 billion per year
93. D
94. a. NISA, c. Lacey, b. USDA APHIS
95. 42%