2006 Presentation Notes

Forming a Cooperative Weed Management Area
Moderated by Kathy O'Reilly-Doyle, Partners for Fish and Wildlife Biologist, U.S. Fish & Wildlife Service

Agenda

Introductions and why you choose to attend this Breakout (5 minutes) - Kathy
Basics of CWMA - 1st page of 2 page handout (5 minutes) - Kris
Why CWMAs in Florida? - 2nd page of 2 page handout (10 minutes) - Kathy and Bob

Discussion of Examples in Florida (10 minutes)
- - - Marion County ISC (formed and focusing on Cogongrass) - Kris/Kathy
- - - Osceola County (in development) - Bob Nelson
- - - Everglades (in development) - Tony Pernas and Jon Lane

Open Discussion (25 minutes) - All
- - - Barriers and Challenges to forming CWMA?
- - - What is the geographic boundary(s) that make sense for SW Florida?
- - - Who are the major landowners and stakeholders in SW Florida?
- - - How do we disseminate this information (how do you get Agency/organization buy-in)?

Wrap up (5 minutes) - Kathy [Top]

Slowing the Spread of the Island Channeled Apple Snails
Moderated by Mike Owen, Fakahatchee Strand State Park

Kinels in Florida and United States

  • Five (5) other species in the US besides the native
    • Pomacea paludosa:
      • sole native of the US
      • eggs 3-5 mm, white
      • snail shell: 2x the size of a quarter
  • They are easier to tell apart by eggs than shells
  • Spp - Where found - what is the likely source?
    • Deep channel or groove where whol. meets body
    • Spike topped, two (2) other types
    • CA- 2 types exotics discovered
    • 95 individuals, native range and into samples
  • Parasites have severely affected 100,000 people in Asia (China)
    - - angiostrolus (nemelode)
  • From South America: Not a natural group; morphologically descriptive
    • P. insularum - most common in Florida
    • P. canclialata - also starting to show up in Florida
    • P. paludosa
    • Marisa cami
    • P. laustum
      • First reported over 30 years ago, 1980s in Miami
      • Amazonia species, no appreciable spread
      • Sherbert green (honeycomb shape mass)
      • Group in with natives from Peru
    • P. canaliculata
      • Smaller, narrow apeture
      • Argentina, Buenos Aires
      • Intro Hawaii and California
      • Genetically similar everywhere
      • Confirmed only Arizona and California
      • Cold tolerant
      • East and West Coast species different
    • P. insularum
      • Reported in 24 ? Florida
      • A few mm in size
      • Bright pink, vertical egg mass spire
      • East Coast exotics related to BA native
      • Eggs lighter just prior to hatching
    • P. chffusa
      • Honeycomb bronze color
  • Nothing known about apple snail parasites

Everglades National Park Invasion

  • Old Tamiami Canal near Shark Valley
  • Confirmed May, 2005
  • Gets in via culverts
  • Survey every 10 days during laying season, every month in winter = eggs, empty shell
  • Between 2005 and 2006, increased substantially. Now over 3 miles, some in marshes off canals
  • No egg masses found in winter, drop off in fall, peek in summer
  • Need to protect native species and systems instead of proof of harm
  • Have seen Limpkins but not Snail Kites eating them
    • Terry Doyle has seen Snail Kites in AG areas
  • Channeled snails have eaten eggs of natives and displaced
  • Spread by:
    • Boat's equipment
    • Aquarium drop, easier than ? them
    • Aquatic vegetation
    • Functionally planktonic - can float
  • No tight correlation between the number of egg masses and number of adults
  • Removal:
    • Mechanical - shells and eggs (scrape into water or remove every 10 days)
    • Chemical
      • 3 - 6 candidates: by the end of this dry season (for adults)
      • One acre research exemptions, field trial for control
      • Vegetable oil seems to have good kill rate on egg masses

Action Notes

  • Rapid Response Protocol Team, Cooperative Area
  • Surveys
    • How widespread and rate of spread; what is know of geographic distribution of each species
    • Human health issues, displace natives for harm (Angiostrongylus)
    • Legislation
  • Control Options (Research)
    • Mechanical
    • Molluschcides
  • Public Outreach (Future Spread)

11:07 AM
Island Apple Snail at Everglades National Park (Pominsularam)

Old Tamiami Canal (Shark Valley) South of US 41
Tim reported P. insularum May, 2005
Attempt control via removal
Surveys (every 10 days) summer months; 7-14 days to hatch
Rapid water rise in canal
Tamiami Trail March: No eggs (December, January and February)
Shark Valley (reproductive population of IAS)
Action after release (may require proof of harm)

11:19 AM
Develop Rapid Response Protocol

QUESTIONS:
Snail Kite GL's Terry Doyle ?????
Fishermen bait eggs vegetable oil ???????

11:31 AM Skip Snow

CONTROL OPTIONS:

SFWMD UF Dr. William Howler
- - - Kill rates (molluscaordes adults)
Eggs removal
Field trial (one acre section of old canal)
Experiment or exemption

10:45 AM

Dr. Tim Collins, FIU
- - - (Ampullarirds) Apple Snail

Taxonomy
Eggs
Species ID Native Apple Snails
- - - Lake Munson - Tallahassee, FL
- - - Pom. cahalrewlats (Argentina) to 39 degrees S cold to levant; pinky eggs, fewer, larger
Pom. insularam (Island Channeled Apple Snail) 24 Countries
P. haustrum (lime green eggs) LAX > NWR
- - - 1989 - Palm Beach Co. Amazonian
- - - 1970s
Pom. insularum - pink eggs
- - - May be spreading more rapidly
Hosts of serious human parasites
- - - Angiostraousylus

RAPID RESPONSE PROTOCOL
WHAT SPECIES ARE WHERE
LEGISLATION AS INVASIVE TO WILDLIFE; SCREENING
HEALTH ISSUES
RESTRICTED - USC
E-MAIL

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