if you have the $$ there is a method in which you insert a coded piece of wire under the skin and this allows batch processing of recaptures. THe technique is used in fisheries and might serve your purpose really well. Alternatively, you could use an elastomer injection under the skin. THose technques would work well for long term studies. The wire method requires a good chunk of start up equipment. THe elastomer can be done with a simple hypodermic needle and a jar of the fluorescent dye.
Here is a link ot a paper using the coded wire and elastomer methods: http://www.mote.org/clientuploads/Bre2007snaptag.pdf Malcolm McCallum On Thu, Jul 23, 2009 at 2:31 PM, B E Carlson<[email protected]> wrote: > I am developing research on wood frog (Rana [Lithobates] sylvatica) > dispersal patterns among ponds. Ideally, I would like to be able to > identify the natal ponds of individual breeding adult frogs in order to > determine whether they are philopatric (breeding in their birth pond) or > have dispersed. I could toe clip all emerging metamorphs at each pond, but > the time involved may be prohibitive and would require the construction of > drift fences around every pond. Does anyone know of a technique for marking > tadpoles in large numbers that will persist 2 or more years, with the > capability of 10+ unique marks? Thank you! > > Bradley Evan Carlson > -- Malcolm L. McCallum Associate Professor of Biology Texas A&M University-Texarkana Editor, Herpetological Conservation and Biology http://www.herpconbio.org http://www.twitter.com/herpconbio Fall Teaching Schedule & Office Hours: Landscape Ecology: T,R 10-11:40 pm Environmental Physiology: MW 1-2:40 pm Seminar: T 2:30-3:30pm Genetics: M 6-10pm Office Hours: M 3-6, T: 12-2, W: 3-4 1880's: "There's lots of good fish in the sea" W.S. Gilbert 1990's: Many fish stocks depleted due to overfishing, habitat loss, and pollution. 2000: Marine reserves, ecosystem restoration, and pollution reduction MAY help restore populations. 2022: Soylent Green is People! Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.
