Effects of species biology on the historical demography of sharks and their implications for likely consequences of contemporary climate change
作者： Shannon M. O’Brien , Vincent F. Gallucci , Lorenz Hauser
DOI: 10.1007/S10592-012-0437-8
关键词:
摘要: Climate variation is an important factor shaping the demographic histories of many marine species, though impacts likely differ depending on species life history, habitat preferences and ecology. Investigating how responded to historic climate fluctuations may provide critical insights into a species’ response current change. Despite their ecological diversity, shark share similar history characteristics be especially vulnerable anthropogenic impacts. We compared patterns genetic variability, mismatch distributions reconstructions from coalescence approaches among temperate tropical with differing characteristics, investigate effect past glaciation cycles population abundance. Genetic diversity at two mitochondrial DNA regions (ND2 control region) was assayed in four North Pacific spiny dogfish, sleeper sharks, salmon shark, bluntnose sixgill shark. In addition, region sequences acquired GenBank for five [tope (California/Australia), white (California), blacktip (eastern western Gulf Mexico), lemon (Bahamas), whale shark] were analyzed. General analyses Bayesian skyline plots supported our hypothesis that biology affected impact history. Consequently, results suggest effects contemporary change sharks some degree predictable biology, distribution, events.
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