What question did this study set out to answer?

To observe and document novel trophic interactions involving the Andean Gull at Lake Titicaca.

March 2, 2026Open Access

Foraging Observations: Novel Trophic Interactions Between the Andean Gull (Chroicocephalus serrranus) and Endangered Vertebrates of Lake Titicaca

Key Points

To observe and document novel trophic interactions involving the Andean Gull at Lake Titicaca.
Field observations of predation and kleptoparasitism behaviors.
Documentation of interactions with Titicaca Grebe and Titicaca Water Frog.
Analysis of ecological implications of these behaviors.
Two new predation events by the Andean Gull recorded.
One new case of kleptoparasitism observed.
Interactions highlight previously underestimated roles of the gull in the ecosystem.

Abstract

ABSTRACT We record two new predation events and one new kleptoparasitic Andean Gull (Chroicocephalus serranus) behavior, interactions that directly link to the Titicaca Grebe (Rollandia microptera) and Titicaca Water Frog (Telmatobius culeus). Our reports expand the understanding of the gull's ecological niche and reveal previously overlooked interactions between it and two endemic and endangered Lake Titicaca species which act as indicators of Lake Titicaca's ecosystem health.

Foraging Observations: Novel Trophic Interactions Between the Andean Gull (Chroicocephalus serrranus) and Endangered Vertebrates of Lake Titicaca

Key Points

Abstract

Cite This Study