Life history and secondary production of Anomalocosmoecus illiesi Marlier, 1962 (Trichoptera, Limnephilidae) in a small stream in the northern Ecuadorian Paramo

Authors: Rios-Touma, Blanca Country: Ecuador DOI: 10.3897/zookeys.1111.85576 Published: Jan. 1, 2022 Source: ZooKeys OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: Andean Caddisflies · Topics: Freshwater macroinvertebrate diversity and ecology, Aquatic Invertebrate Ecology and Behavior, Fish Ecology and Management Studies

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Life history of benthic faunas of tropical high-altitude cold environments are poorly studied. Here, monthly larval and adult data are presented for Anomalocosmoecus illiesi at Saltana Stream in Ecuador. In cold conditions throughout the year (6 °C), this species showed an asynchronous and continuous production. Larval density showed two peaks in August and April. All five larval instars were present in most months. Using the size-frequency method an annual rate of secondary production per biomass of 4.8 was calculated. The measured biomass was 785 mg/m2.

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