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Growth strategies of tadpoles along the pond permanency gradient

Content Provider	Springer Nature Link
Author	Pujol Buxó, Eudald Garriga, Núria Richter Boix, Alex Llorente, Gustavo A.
Copyright Year	2016
Abstract	The preference for particular features of water bodies for reproduction is one of the most important aspects of anuran ecology, affecting key aspects of both tadpole and adult life. The use by species of different habitats along the pond permanency gradient has been already studied, noting conflicting selective pressures from predation and desiccation risk. Here, we aim to discover physiological patterns related with this gradient. As a study system, we used the full anuran community of the NE Iberian Peninsula. We quantified growth rate, consumption rate, food assimilation and the proportion of energy allocated to growth, as well as gut length, for all species. Food consumption rate and growth allocation were the variables that defined tadpole growth, while food assimilation abilities and gut length seem to have a secondary or cryptic role in growth. More interestingly however, our data suggests a labile continuum of consumption-based versus allocation/assimilation-based growth strategies differentiating species. Differences among species follow predictions of adaptation to the pond permanency gradient selective pressures. Species from ephemeral ponds are more prone to use consumption-related growth tactics while species inhabiting ponds with longer hydroperiods are more efficient retaining and allocating energy into growth, although results seem partly shaped by strong interspecific competition. Physiological differences in growth and the usage of the assimilated energy could be an additional factor to understand how tadpoles adapt to the features of ponds they inhabit, as well as how they compete and coexist.
Starting Page	1117
Ending Page	1132
Page Count	16
File Format	PDF
ISSN	02697653
Journal	Evolutionary Ecology
Volume Number	30
Issue Number	6
e-ISSN	15738477
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-09-14
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Predation risk Energy allocation Consumption rate Growth rate Resource exploitation Evolutionary Biology Ecology Plant Sciences Animal Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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