2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/06/2017 | 9:30 AM - 9:45 AM | Phosphorus availability in the source population influences response to dietary phosphorus quantity in a New Zealand freshwater snail | 301A
Phosphorus availability in the source population influences response to dietary phosphorus quantity in a New Zealand freshwater snail
Variation among populations in resource availability can shape ecological and evolutionary processes. We address whether variation among populations in availability of dietary phosphorus (P) is linked to heterogeneity in growth of Potamopyrgus antipodarum, a New Zealand snail, on a P-limited diet. In juvenile snails from lakes that vary in P availability, we quantified growth rate and alkaline phosphatase (AP) expression on high vs. low-P diets. We found that P. antipodarum exhibits wide intraspecific variation in response to P limitation and some of this variation is associated with P availability in the lake of origin. In particular, snails from lakes with relatively low P availability featured the most dramatic increases in growth on the high-P diet. By contrast, although AP expression varied substantially among lineages, overall AP expression was not affected by diet treatment and was not associated with the relationship between C:P in the lake of origin and sensitivity to P limitation. Together, our results demonstrate connections between variation in dietary resource availability among populations and organismal response to P limitation as well as evidence for intraspecific variation of AP expression in animals.
- C03 Invertebrates
- S19 Elements and energy as fundamental currencies of nature: using ecological stoichiometry as a tool to advance the sustainability of freshwater ecosystems
- C28 Land-Water Interfaces & C29 Life Histories
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Presenters/Authors
Maurine Neiman
(), University of Iowa, krist@uwyo.edu;
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Laura Bankers
(), University of Iowa, laura-rice@uiowa.edu;
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Katelyn Larkin
(), University of Iowa, katelyn-larkin@uiowa.edu;
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Michele Larson
(), University of Wyoming, mlarso22@uwyo.edu;
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Daniel Greenwood
(), University of Wyoming, dgreenw2@uwyo.edu;
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Marissa Dyck
(), University of Wyoming, mdyck@uwyo.edu;
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Maurine Neiman
(), University of Iowa, maurine-neiman@uiowa.edu;
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