Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate

Hoffman J, Peck LS, Linse K, Clarke A (2011)
Journal of Heredity 102(1): 55-66.

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Abstract
Although studies of population genetic structure are commonplace, a strong bias exists toward species from low latitudes and with relatively poor dispersal capabilities. Consequently, we used 280 amplified fragment length polymorphism bands to explore patterns of genetic differentiation among 8 populations of a high latitude broadcast-spawning marine mollusc, the Antarctic limpet Nacella concinna. Over 300 individuals were sampled along a latitudinal gradient spanning the Antarctic Peninsula from Adelaide Island to King George Island (67 degrees-62 degrees S), then to Signy Island (60 degrees S) and South Georgia (54 degrees S). Populations from the Antarctic Peninsula exhibited little genetic structure but were themselves strongly differentiated from both Signy and South Georgia. This finding was analytically highly robust and implies the presence of significant oceanographic barriers to gene flow in a species long regarded as a classic example of a widely dispersing broadcast spawner.
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Hoffman J, Peck LS, Linse K, Clarke A. Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate. Journal of Heredity. 2011;102(1):55-66.
Hoffman, J., Peck, L. S., Linse, K., & Clarke, A. (2011). Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate. Journal of Heredity, 102(1), 55-66.
Hoffman, J., Peck, L. S., Linse, K., and Clarke, A. (2011). Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate. Journal of Heredity 102, 55-66.
Hoffman, J., et al., 2011. Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate. Journal of Heredity, 102(1), p 55-66.
J. Hoffman, et al., “Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate”, Journal of Heredity, vol. 102, 2011, pp. 55-66.
Hoffman, J., Peck, L.S., Linse, K., Clarke, A.: Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate. Journal of Heredity. 102, 55-66 (2011).
Hoffman, Joseph, Peck, Lloyd S., Linse, Katrin, and Clarke, Andrew. “Strong Population Genetic Structure in a Broadcast-Spawning Antarctic Marine Invertebrate”. Journal of Heredity 102.1 (2011): 55-66.
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10 Citations in Europe PMC

Data provided by Europe PubMed Central.

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Harper EM, Clark MS, Hoffman JI, Philipp EE, Peck LS, Morley SA., PLoS ONE 7(9), 2012
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Unexpected fine-scale population structure in a broadcast-spawning Antarctic marine mollusc.
Hoffman JI, Clarke A, Clark MS, Fretwell P, Peck LS., PLoS ONE 7(3), 2012
PMID: 22403655

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