Diet of Larval Red Salamanders (Pseudotriton Ruber) Examined Using a Nonlethal Technique

  title={Diet of Larval Red Salamanders (Pseudotriton Ruber) Examined Using a Nonlethal Technique},
  author={Kristen K. Cecala and Steven J. Price and Michael E. Dorcas},
Abstract Stream salamanders may play important roles as predators within streams, but we know little about actual predation by stream salamanders on other organisms. Because larval stream salamanders are more abundant within streams than adults, feed and forage throughout the year, and may spend multiple years in streams before transformation, larvae may play a more important role than adults in trophic interactions within streams. We conducted a study using larval Red Salamanders (Pseudotriton… 
The Diet of the Cumberland Plateau Salamander (Plethodon kentucki) in an Old Growth Forest of Southeastern Kentucky
This study represents one of the few successful uses of nonlethal gastric lavage methods on a large plethodontid salamander and the first description of P. kentucki diet identified to family and genus.
Diet of larval Pleurodeles waltl (Urodela: Salamandridae) throughout its distributional range
The diet of larvae of the Iberian ribbed newt (Pleurodeles waltl), an urodele endemic of the western Mediterranean region, was investigated and it was found that the larvae predate primarily on microcrustaceans and larvae of aquatic insects.
Diet and Microhabitat Use of Bolitoglossa cf. pandi (Caudata: Plethodontidae) from the Cordillera Oriental of Colombia
Diet and microhabitat use of this salamander is similar to other species of Bolitoglossa and are affected by local environmental factors, such as prey availability and climate regime, and endogenous factors,such as body size.
Relationship between Diet and Microhabitat Use of Red-legged Salamanders (Plethodon shermani) in Southwestern North Carolina
This study examined whether diet composition of the Red-legged Salamander, Plethodon shermani, differed between salamanders found on vegetation and on the ground surface, and found no evidence that the relative use of different prey categories varied in relation to a salamander's selected microhabitat.
Influence of Abiotic Factors on Activity in a Larval Stream Salamander Assemblage
This study used capture rates from passive trapping as an index of activity level and sought to identify the environmental variables most responsible for fluctuations in larval stream salamander activity, finding that the model incorporating time of day and cloud cover was the best predictor of larval salamanders activity.
Leaf litter and rock bag surveys allow for detection and DNA barcoding characterization of diet composition of dusky salamanders
Abstract. Salamanders are vital components of many aquatic ecosystems food webs and are often found in diverse habitats, including both urban and semi-rural environments. The northern dusky
Diet of Larval Ambystoma altamiranoi from Llano de los Axolotes, Mexico
The observations suggest that the diet of A. altamiranoi is relatively narrow and that resources may be limited (relatively high frequency of empty stomachs), suggesting that factors that could impact the availability of ostracods and gastropods might have serious consequences for these endangered salamanders.
Intraguild Interactions and Population Regulation in Plethodontid Salamanders
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The Larval Life of the Red Salamander, Pseudotriton ruber
  • R. Bruce
  • Environmental Science, Biology
  • 1972
P. ruber is a semiaquatic salamander which inhabits springs and small streams throughout much of eastern United States, and is believed to be a primitive species which has retained a mode of life similar to that of ancestral plethodontids of Appalachia.
Food Habits of Sympatric Larval Ambystoma tigrinum and Notophthalmus viridescens
Differences in food habits were probably due to difference in size between larvae of the two salamander species, and it may be more efficient for larger larvae to invest energy in capturing a few larger prey rather than many smaller prey.
The Foraging Strategy of the Dusky Salamander, Desmognathus fuscus (Amphibia, Urodela, Plethodontidae): an Empirical Approach to Predation Theory
The feeding ecology of the plethodontid salamander Desmognathus fuscus was investigated within the framework specified by theoretical foraging strategy models and a correlation between increased precipitation and greater size selectivity of prey items by the salamanders is shown.
On the Ecological Roles of Salamanders
▪ Abstract Salamanders are cryptic and, though largely unrecognized as such, extremely abundant vertebrates in a variety of primarily forest and grassland environments, where they regulate food webs
Ontogeny of the Diet and Feeding Behavior of Eurycea bislineata Larvae
Comparisons of the relative numbers, relative volumes, and the mean sizes of dietary items revealed very high dietary overlap between coexisting larvae of different sizes, suggesting differences in body size and ontogenetic shifts in temporal and spatial patterns of feeding are not effective in partitioning food resources between conspecifics.
Energy Flow and Nutrient Cycling in Salamander Populations in the Hubbard Brook Experimental Forest, New Hampshire
Salamander tissue is higher in protein content than that of birds and mammals and represents a source of high-quality energy for potential predators, and is efficient at converting ingested energy into new tissue and produce more new tissue annually than do bird populations.
Application of Skeletochronology in Aging Larvae of the Salamanders Gyrinophilus porphyriticus and Pseudotriton ruber
It is suggested that larvae of G. porphyriticus may not develop well-defined annual bone layers because of their adaptation to relatively aseasonal, subterranean microhabitats in headwater springs and surface-dwellers that are exposed to the seasonal climatic fluctuations of the region.
Optimal diets: simultaneous search and handling of multiple-prey loads by salamander larvae
Diet selection by small-mouthed salamander larvae, Ambystoma texanum, that can search while handling up to two prey at a time, fit very well with the predictions of a multiple-prey model.
Size-Specific Interactions among Larvae of the Plethodontid Salamanders Gyrinophilus porphyriticus and Eurycea cirrigera
It is suggested that as Gyrinophilus grows, its ability to prey on Eurycea increases, becoming asymptotic near 30 mm snout-vent length, and size-specific interactions demonstrated in this study may influence the population dynamics and life history evolution of these species.
Forest structure and stream salamander diets: Implications for terrestrial-aquatic connectivity
The concept o f the ecological boundary i s emerging as a useful too! for investigating and understanding ecological processes in heterogeneous landscapes (CADENASSO et al. 2003). Ecosystem