Tadpoles of the sandpaper frog, Lechriodus fletcheri, hunt mosquito larvae in ephemeral pools
John Gould
+ Author Affiliations
- Author Affiliations
School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia. Email: john.gould@uon.edu.au
Australian Journal of Zoology 67(1) 9-11 https://doi.org/10.1071/ZO19065
Submitted: 21 October 2019 Accepted: 10 December 2019 Published: 14 January 2020
Abstract
Amphibian tadpoles are generally considered to be herbivores or plant-based detritivores that occupy lower trophic levels within freshwater aquatic communities. However, tadpoles are known to incorporate a variety of animal products within their diets as well. There are also many examples of tadpole species occupying higher trophic levels as opportunistic predators of conspecifics and other animals. In this paper, I describe the opportunistic predation of mosquito larvae by tadpoles of the sandpaper frog, Lechriodus fletcheri. Field observations revealed that L. fletcheri tadpoles actively preyed on mosquito larvae at the surface of the water column, using a series of swimming-to-gliding motions to hunt. This swimming routine may be effective for catching mosquito larvae, which respond to water vibrations to evade predation, allowing tadpoles to effectively become ‘invisible’ to the larvae during periods when tail motions are ceased. Given that L. fletcheri tadpoles have a non-specialised omnivorous diet, these findings indicate that the tadpoles of some species have the ability to take up multiple ecological roles within freshwater systems, including as opportunistic predators.
References
Alford, R. (1999). Ecology: resource use, competition, and predation. In ‘Tadpoles: the Biology of Anuran Larvae’. (Eds R. W. McDiarmid and R. Altig.) pp. 240–278. (University of Chicago Press: Chicago.)Altig, R., and Johnston, G. F. (1989). Guilds of anuran larvae: relationships among developmental modes, morphologies, and habitats. Herpetological Monographs 3, 81–109.
| Guilds of anuran larvae: relationships among developmental modes, morphologies, and habitats.Crossref | GoogleScholarGoogle Scholar |
Altig, R., Whiles, M. R., and Taylor, C. L. (2007). What do tadpoles really eat? Assessing the trophic status of an understudied and imperiled group of consumers in freshwater habitats. Freshwater Biology 52, 386–395.
| What do tadpoles really eat? Assessing the trophic status of an understudied and imperiled group of consumers in freshwater habitats.Crossref | GoogleScholarGoogle Scholar |
Anstis, M. (2017). ‘Tadpoles and Frogs of Australia.’ (New Holland Publishers: Sydney.)
Banks, B., and Beebee, T. (1987). Spawn predation and larval growth inhibition as mechanisms for niche separation in anurans. Oecologia 72, 569–573.
| Spawn predation and larval growth inhibition as mechanisms for niche separation in anurans.Crossref | GoogleScholarGoogle Scholar | 28312520PubMed |
Benke, A. C., and Wallace, J. B. (1980). Trophic basis of production among net‐spinning caddisflies in a southern Appalachian stream. Ecology 61, 108–118.
| Trophic basis of production among net‐spinning caddisflies in a southern Appalachian stream.Crossref | GoogleScholarGoogle Scholar |
Blaustein, L., and Margalit, J. (1996). Priority effects in temporary pools: nature and outcome of mosquito larva–toad tadpole interactions depend on order of entrance. Journal of Animal Ecology 65, 77–84.
| Priority effects in temporary pools: nature and outcome of mosquito larva–toad tadpole interactions depend on order of entrance.Crossref | GoogleScholarGoogle Scholar |
Brönmark, C., and Edenhamn, P. (1994). Does the presence of fish affect the distribution of tree frogs (Hyla arborea)? Conservation Biology 8, 841–845.
| Does the presence of fish affect the distribution of tree frogs (Hyla arborea)?Crossref | GoogleScholarGoogle Scholar |
Busack, S. D., and Zug, G. R. (1976). Observations on the tadpoles of Pelobates cultripes from southern Spain. Herpetologica 32, 130–137.
Duellman, W. E., and Trueb, L. (1994). ‘Biology of Amphibians.’ (JHU Press: Maryland.)
Gosner, K. L. (1960). A simplified table for staging anuran embryos and larvae with notes on identification. Herpetologica 16, 183–190.
Heyer, W. R., McDiarmid, R. W., and Weigmann, D. L. (1975). Tadpoles, predation and pond habitats in the tropics. Biotropica 7, 100–111.
| Tadpoles, predation and pond habitats in the tropics.Crossref | GoogleScholarGoogle Scholar |
Jenssen, T. A. (1967). Food habits of the green frog, Rana clamitans, before and during metamorphosis. Copeia 1967, 214–218.
| Food habits of the green frog, Rana clamitans, before and during metamorphosis.Crossref | GoogleScholarGoogle Scholar |
Kluge, A. G. (1981). The life history, social organization, and parental behavior of Hyla rosenbergi Boulenger, a nest-building gladiator frog. Miscellaneous Publications – University of Michigan Museum of Zoology 160, 1–170.
Lannoo, J. (1987). Larval life in the leaves: arboreal tadpole types, with special attention to the morphology, ecology, and behavior of the oophagous Osteopilus brunneus (Hylidae) larva. Fieldiana. Zoology 38, 1–31.
Nathan, J., and James, V. (1972). The role of protozoa in the nutrition of tadpoles. Copeia , 669–679.
| The role of protozoa in the nutrition of tadpoles.Crossref | GoogleScholarGoogle Scholar |
Newman, R. A. (1988). Adaptive plasticity in development of Scaphiopus couchii tadpoles in desert ponds. Evolution 42, 774–783.
| Adaptive plasticity in development of Scaphiopus couchii tadpoles in desert ponds.Crossref | GoogleScholarGoogle Scholar | 28563867PubMed |
O’Meara, G. F. (1976). Saltmarsh mosquitoes (Diptera: Culicidae). In ‘Marine Insects’. (Ed. L. Cheng.) pp. 303–333. (North-Holland: Amsterdam.)
O’Neill, B. J., and Thorp, J. H. (2014). Untangling food‐web structure in an ephemeral ecosystem. Freshwater Biology 59, 1462–1473.
| Untangling food‐web structure in an ephemeral ecosystem.Crossref | GoogleScholarGoogle Scholar |
Pavignano, I. (1989). Method employed to study the diet of anuran amphibians larvae. Amphibia-Reptilia 10, 453–455.
| Method employed to study the diet of anuran amphibians larvae.Crossref | GoogleScholarGoogle Scholar |
Petranka, J. W., and Kennedy, C. A. (1999). Pond tadpoles with generalized morphology: is it time to reconsider their functional roles in aquatic communities? Oecologia 120, 621–631.
| Pond tadpoles with generalized morphology: is it time to reconsider their functional roles in aquatic communities?Crossref | GoogleScholarGoogle Scholar | 28308314PubMed |
Roberts, D. (2014). Mosquito larvae change their feeding behavior in response to kairomones from some predators. Journal of Medical Entomology 51, 368–374.
| Mosquito larvae change their feeding behavior in response to kairomones from some predators.Crossref | GoogleScholarGoogle Scholar | 24724285PubMed |
Seale, D. B., and Beckvar, N. (1980). The comparative ability of anuran larvae (genera: Hyla, Bufo and Rana) to ingest suspended blue-green algae. Copeia , 495–503.
| The comparative ability of anuran larvae (genera: Hyla, Bufo and Rana) to ingest suspended blue-green algae.Crossref | GoogleScholarGoogle Scholar |
Sih, A. (1986). Antipredator responses and the perception of danger by mosquito larvae. Ecology 67, 434–441.
| Antipredator responses and the perception of danger by mosquito larvae.Crossref | GoogleScholarGoogle Scholar |
Skelly, D. K. (1997). Tadpole communities: pond permanence and predation are powerful forces shaping the structure of tadpole communities. American Scientist 85, 36–45.
Steinwascher, K., and Travis, J. (1983). Influence of food quality and quantity on early larval growth of two anurans. Copeia , 238–242.
| Influence of food quality and quantity on early larval growth of two anurans.Crossref | GoogleScholarGoogle Scholar |
Tejedo, M. (1991). Effect of predation by two species of sympatric tadpoles on embryo survival in natterjack toads (Bufo calamita). Herpetologica 47, 322–327.
Wassersug, R. J. (1975). The adaptive significance of the tadpole stage with comments on the maintenance of complex life cycles in anurans. American Zoologist 15, 405–417.
| The adaptive significance of the tadpole stage with comments on the maintenance of complex life cycles in anurans.Crossref | GoogleScholarGoogle Scholar |
Wassersug, R. J. (1980). Internal oral features of larvae from eight anuran families: functional, systematic, evolutionary and ecological considerations. Miscellaneous Publications – Museum of Natural History University of Kansas 68, 1–146.
| Internal oral features of larvae from eight anuran families: functional, systematic, evolutionary and ecological considerations.Crossref | GoogleScholarGoogle Scholar |
