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5/24/2018  |   2:30 PM - 2:45 PM   |  UNCOVERING THE LIFE HISTORY AND PHENOLOGY OF PHYLLOICUS PULCHRUS, A CADDISFLY (TRICHOPTERA) IN TROPICAL RAINFOREST STREAMS   |  420 B

UNCOVERING THE LIFE HISTORY AND PHENOLOGY OF PHYLLOICUS PULCHRUS, A CADDISFLY (TRICHOPTERA) IN TROPICAL RAINFOREST STREAMS

Despite their abundance, diversity, and importance in freshwater ecosystems, knowledge of caddisfly life history is incomplete. The objectives of this study were to determine the life history and phenology of Phylloicus pulchrus in a stream of the Luquillo Experimental Forest, Puerto Rico. Egg and larvae were reared in the laboratory until adult emergence. Larvae and adults were collected monthly for a year (2016-2017), classified by instars and sex. Environmental data was related to P. pulchrus abundance. Phylloicus pulchrus has five larval stages, slightly greater development times than other Phylloicus species, and has an asynchronous multivoltine life cycle. Rainfall had a significant negative effect on first to third larval instar abundance, especially rainfall from the previous month or two previous months. Rainfall seasonality had a significant negative effect on second instar larvae abundance. Temperature had a significant negative effect on second instar larvae. This study provides essential ecological information that improves our understanding of the species role and function in tropical freshwater ecosystems. This research can serve as a base for following studies involving P. pulchrus and contributes to filling the gap of knowledge on Neotropical caddisfly life history and phenology.

  • Tropical Rivers
  • Invertebrate
  • Population

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Presenters/Authors

Limarie Reyes-Torres (), University of Southern Mississippi, limarie.reyestorres@usm.edu;


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Alonso Ramírez (), North Carolina State University, alonso.ramirez@ncsu.edu;


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