Effects of hydroperiod on morphology of tadpoles from highland ponds
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Effects of hydroperiod on morphology of tadpoles from highland ponds Thaı´se Boelter . Fernanda Marcelia dos Santos . Leonardo Felipe B. Moreira . Cristina Stenert . Martin Reichard . Leonardo Maltchik
Received: 9 June 2020 / Accepted: 19 September 2020 Ó Springer Nature B.V. 2020
Abstract Hydroperiod length has been identified as a major driver in community assembly in freshwater systems. Yet we generally lack an understanding of how morphological traits respond to water level decrease under natural conditions. Here, we studied variation in body size and shape in lateral view in tadpoles of Scinax squalirostris and Odontophrynus americanus inhabiting ponds in superhumid highland plateau in southern Brazil. Hydroperiod did not affect tadpole size in either species. In relation to body shape, Handling Editor: Te´lesphore Sime-Ngando.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10452-020-09799-1) contains supplementary material, which is available to authorized users. T. Boelter F. M. dos Santos C. Stenert L. Maltchik (&) Laborato´rio de Ecologia e Conservac¸a˜o de Ecossistemas Aqua´ticos, Universidade do Vale do Rio dos Sinos, UNISINOS, Av. Unisinos, 950, Sa˜o Leopoldo, Rio Grande do Sul 93022-750, Brazil e-mail: [email protected]
S. squalirostris tadpoles from long hydroperiod ponds had shorter tails and deeper tail fins than tadpoles from other hydroperiods. Predator presence was positively associated with hydroperiod, restricting our ability to separate their effects on tadpoles morphology. For O. americanus, tadpole shape was not affected by pond hydroperiod. We demonstrated that, in natural environment, the influence of hydroperiod on tadpole morphology might depend on species-specific characteristics, such as behavior and life-history traits. Our results indicate that local context may lead to different effects of hydroperiod, and hydroperiod alone can only partly explain the variation on tadpole shape. Keywords Amphibians Life history Araucaria moist forest Pond drying Plasticity M. Reichard Institute of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
L. F. B. Moreira Instituto de Biocieˆncias, Universidade Federal de Mato Grosso, Cuiaba´, Mato Grosso, Brazil M. Reichard Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czech Republic
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Aquat Ecol
Introduction Hydroperiod duration (i.e., the length of aquatic phase) governs dynamics in the wetland abiotic conditions and affects presence, abundance and phenotypic responses of aquatic species (Baber et al. 2004; Sze´kely et al. 2017). Because hydroperiod is often correlated with other aspects of environmental heterogeneity (i.e., pond area, aquatic plant structure, and predator presence), the interpretation of independent effects on community patterns is often hampered (see Knauth et al. 2018; Werner et al. 2007). In tadpoles, individuals of the same species can be found in a variety of fr
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