2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/06/2017 | 12:00 PM - 12:15 PM | CRYPTIC LINEAGES OF THE COMMON ALPINE MAYFLY BAETIS ALPINUS SHOW STRONG LIFE HISTORY DIVERGENCE | 306C
CRYPTIC LINEAGES OF THE COMMON ALPINE MAYFLY BAETIS ALPINUS SHOW STRONG LIFE HISTORY DIVERGENCE
Cryptic species challenge our understanding of species ecology and response to environmental change. If species, in fact, comprise multiple ecologically divergent lineages, any apparent wide ecological niche and strong life-history plasticity may actually reflect genetically distinct specialists. We tested for the presence of cryptic lineages in the common alpine mayfly Baetis alpinus across the Swiss Alps using mitochondrial cytochrome oxidase I gene and 10 polymorphic nuclear microsatellites markers. Genetic analyses revealed two highly differentiated cryptic lineages that occur sympatrically over broad spatial scales. One lineage appeared to be more restricted to high elevation sites. Further, we examined larval cohort structure in two glacial headwater basins in 2013 to determine whether the two lineages differ in voltinism and phenology. We found contrasting life cycles between cryptic lineages involving differential developmental pathways. An egg clutch survey within one basin consistently indicated partial temporal segregation in reproductive periods. Widespread generalist morphospecies can hide cryptic lineages with much narrower ecological niches and distribution ranges, and higher risk of extinction in the face of global change.
- C29 Life Histories
- C03 Invertebrates
- C15 Population Ecology & C30 Molecular Ecology
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Presenters/Authors
Marie Leys
(), Swiss Federal Institute of Aquatic Science and Technology, EAWAG, ; Aquatic Ecology dpt., marie.leys@eawag.ch;
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Irene Keller
(), University of Bern and Swiss Institute of Bioinformatics, irene.keller@dkf.unibe.ch;
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Katja Räsänen
(), Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dubendorf, Switzerland , katja.rasanen@eawag.ch;
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Christopher Robinson
(), Swiss Federal Institute of Aquatic Science and Technology, EAWAG ; Aquatic Ecology dpt., Christopher.robinson@eawag.ch;
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