Seasonal Dynamics of LeafEating Insects Biomass and Its Influence on Carotenoid Content in Feathers of Great Tit Nestlingsстатья
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Дата последнего поиска статьи во внешних источниках: 6 февраля 2014 г.
Аннотация:Studies performed at the Zvenigorod Biological Station of the Moscow State University in 2010
showed that the biomass of leafeating insects during the first nesting cycle of the Great Tit was three times higher than that during the second cycle. As estimated from video recordings made at the nests, the proportions of leafeating larvae in the diet of first and secondbrood nestlings were 84.3 and 46.0%, respectively.
In both cases, most of them were caterpillars of butterflies and moths (Lepidoptera), and their total proportion in the diet was higher in the first than in secondbrood nestlings. Lepidopteran larvae are the main source of carotenoids for the birds, and Raman spectroscopic analysis for carotenoids in ventral feathers confirmed that their content was also higher in the firstbrood nestlings.