rana pipiens malformation assessment
DESCRIPTION
Rana pipiens Malformation Assessment. Katheryn M. Junglas, MSU Department of Biology Minot ND, 58707. Range. Range in North Dakota. Taken from Hoberg and Gause,. Deformed Frog sites. North Dakota Malformations. USGS- NWHC Information Report2001. Tadpoles development. - PowerPoint PPT PresentationTRANSCRIPT
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Katheryn M. Junglas, MSU Department of Biology
Minot ND, 58707
Rana pipiens Malformation Assessment
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Range
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Range in North Dakota
Taken from Hoberg and Gause,
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Deformed Frog sites
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North Dakota Malformations
USGS- NWHC Information Report2001
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Tadpoles development
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Normal Bone Structure
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Other Deformities
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X-Ray of Bone Structure
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Extra Limbs
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Deformed leg structures
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False elbow and Double bones
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No Regression of tail
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Missing the Right eye
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Salamander from our lab
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Possible causes for deformities
• UV-B Radiation
• Chemical Agents
• Parasites
-Ribeiroia
-Alaria
• Interactions
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Sexing frogs (female)
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Sexing frogs (male)
Hayes (2002)
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Hermaphroditic frog
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Atrazine effects-normal histology- female
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Atrazine-normal male
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Atrazine-ovateste
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Habitat
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Habitat
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Habitat
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Finding Tadpoles
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Tadpole
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Normal Bone Structure
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Measuring
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Location
SUL (mm)
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sexSnout Uro-style Length (mm)
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Statistics
• No significant difference in male and females
• No Significant difference in lengths between sites
• Healthy Ratio of Males to females 13:20
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Sexing animals (males)
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Assessment
• No deformities were found
• Mean of Female juvenile length- 42.2 mm
• Mean of Male juvenile length- 41.4 mm
• Mass of Gonads- in progress
• Skeletal development- so far good development of skeleton and cartilage
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Why We Should Continue to Observe
•Small sample size
•Teratogens and carcinogens in other organisms
•Since no malformations yet, we can analyze what is or isn’t here, and the sooner we notice something, the easier to find out what that is.
•Frogs are Cool!
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Acknowledgements
• Dr. Christopher Beachy at Minot State
• Dr. Cory Rubin, Project Manager Assistant
• Regional Director Richard A. Coleman
• All the staff at Upper Souris Wildlife Refuge
• Fish-Wildlife Service Cost Share Agreement, grant #62680-4-J001
• Minot State University, Division of Biology