Native bees with floral sonication behaviour can achieve high‐performance pollination of highbush blueberry in Chile

Blueberry is one of the most relevant buzz‐pollinated crops worldwide and Chile is the most important global producer of fresh blueberries during wintertime in the Northern Hemisphere. Thousands of exotic Bombus terrestris are imported from Europe to pollinate blueberries. However, no study has inve...

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Veröffentlicht in:Agricultural and forest entomology 2023-02, Vol.25 (1), p.91-102
Hauptverfasser: Cortés‐Rivas, Benito, Smith‐Ramirez, Cecilia, Monzón, Víctor Hugo, Mesquita‐Neto, José Neiva
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Sprache:eng
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Zusammenfassung:Blueberry is one of the most relevant buzz‐pollinated crops worldwide and Chile is the most important global producer of fresh blueberries during wintertime in the Northern Hemisphere. Thousands of exotic Bombus terrestris are imported from Europe to pollinate blueberries. However, no study has investigated the performance of the native Chilean fauna to pollinate blueberry or other crops. Therefore, we aimed to compare the performance of native Chilean floral visitors with managed visitors to pollinate highbush blueberry. Per‐visit pollination performance (stigmatic pollen deposition) and floral visitation were measured and the presence of sonication behaviour of flower visitors was evaluated for five cultivars in two blueberry orchards located in southern Chile. Floral visitors showed a preference for one or more blueberry cultivars, instead of visiting all cultivars equally. Floral visits with sonication deposited more conspecific pollen on stigmas than visits without sonication. Some native sonicating bees (Cadeguala and Bombus), especially Cadeguala occidentalis, were efficient pollen vectors of blueberry and better pollinators than honeybees (5.8 times more pollen transferred) similar to that of the managed bee B. terrestris. The results indicate that some Chilean native bee species, especially those with sonication behaviour, can provide pollination service to highbush blueberry crops. Resumen Abejas nativas con comportamiento de sonicación floral pueden lograr un alto rendimiento de la polinización de arándano alto en Chile El arándano es uno de los cultivos polinizados por zumbido más importantes a nivel mundial y Chile es el productor mundial más importante de arándanos frescos durante el invierno del hemisferio norte. Se importan miles de Bombus terrestris exóticos de Europa para polinizar los arándanos. Sin embargo, ningún estudio ha investigado el rendimiento de la fauna nativa chilena para polinizar arándanos u otros cultivos. Por lo tanto, nuestro objetivo fue comparar el rendimiento de los visitantes florales nativos de Chile con los visitantes manejados para polinizar el arándano alto. Se midió el rendimiento de la polinización por visita (deposición estigmática de polen) y la visitación floral y se evaluó la presencia del comportamiento de sonicación de los visitantes florales para cinco cultivares en dos huertos de arándanos ubicados en el sur de Chile. Los visitantes florales mostraron preferencia por uno o más cultivares de arándanos, e
ISSN:1461-9555
1461-9563
DOI:10.1111/afe.12533