Abstract
AbstractOrganism size is considered a master trait influencing virtually every aspect of life, but the underlying mechanisms of phenotypic variation are still poorly understood. This study examined the valve size (length, height, width) of an ostracod species (Cyprideis torosa) collected from different lakes of the Mansfeld Lakes (ML), Central Germany. Size variability were investigated on different temporal (ecological and geological) scales and compared on different spatial (regional and local) scales. Statistical methods were applied to explore size variation between and within sample locations and the relationship between size traits and physical and chemical parameters (salinity, oxygen, temperature, pH). In ML no significant differences in size between contiguous lakes were detected but two morphotypes in males were identified in stratigraphically separated Holocene samples and co-occurring within Recent samples. Seasonal effects were detected for females (smaller size in spring than in autumn) and males (smaller size range in spring, higher variability in autumn). The correlation of size traits with environmental parameters revealed no general patterns, but a locally limited correlation between size and salinity in ML exists. On spatial and temporal scales, males and females show sex-specific size patterns, possibly due to differences in life history traits or selection pressure.
Publisher
Springer Science and Business Media LLC
Reference42 articles.
1. Aguilar-Alberola JA, Mesquita-Joanes F (2014) Breaking the temperature-size rule: thermal effects on growth, development and fecundity of a crustacean from temporary waters. J Therm Biol 42:15–24. https://doi.org/10.1016/j.jtherbio.2014.02.016
2. Anadón P, Gliozzi E, Mazzini I (2002) Paleoenvironmental reconstruction of marginal marine environments from combined paleoecological and geochemical analyses on ostracods. Geophys Monogr Ser 131:227–247. https://doi.org/10.1029/131GM12
3. Baird RB, Eaton AD, Rice EW (2017) Standard Methods for the Examination of Water and Wastewater, 23rd edn. American Public Health Association, American Water Works Association, Water Environment Federation, Washington D.C.
4. Boomer I, Frenzel P, Feike M (2016) Salinity-driven size variability in Cyprideis torosa (Ostracoda, crustacea). J Micropalaeontology 36:63–69. https://doi.org/10.1144/jmpaleo2015-043
5. Cabral MC, Fatela F, Lopes V, Freitas MC, Andrade C (2017) Cyprideis torosa (Jones, 1850) in mainland portugal: what do we know? J Micropalaeontology 36:94–112. https://doi.org/10.1144/jmpaleo2015-031