Kenneth S. Norris Rancho Marino Reserve

22 May, 03 AM - 22 May, 04 AM

I will be collecting ca. 40 individuals of the limpet Lottia scabra using hand tools (e.g. hammer, screwdriver). I will also be taking a density survey using a camera and quadrat. I'll e out in the intertidal approximately an hour before low tide. The purpose of this study is to examine genetic patterns of the marine limpet Lottia scabra. L. scabra is found from Baja California to Cape Mendecino. A preliminary study by the Grosberg lab of genetic patterns in L. scabra has shown that populations south of the Point Conception region are genetically distinct from populations north of the Point Conception region. Thus, we have an opportunity to examine genetic patterns along the entire range of this northern population and compare populations along the temperature gradient present in California?s coastal waters. We are testing the hypothesis that populations in the middle of species ranges are more genetically diverse than those populations found near the edges of species ranges. Documenting and comparing these patterns will be important for predictions of the effects of climate change on species ranges, adaptation, and survival. Organisms adapt to their environment by utilizing the genetic variation existing in their populations. Based on genetic diversity existing throughout the range of Lottia scabra, we can predict the ability for L. scabra to respond warming sea surface temperatures and adapt to climate change. Moreover, our findings will be applicable to predictions for other marine species. It will also apply to conservation efforts for marine intertidal organisms and contribute general knowledge to California?s natural history.

Visit #12442 @Kenneth S. Norris Rancho Marino Reserve

Approved

Under Project # 8084 | Research

Lottia Scabra: Population Genetics of the Species Range

research_scientist - University of California, Davis

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Group of 2 Faculty May 22, 2007 (1 days)
Yoel Stuart May 22, 2007 (1 days)

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Day Use Only 3 May 22 (1 hours)