Analysis of protein content in pollen loads produced in north-west Spain

Sá-Otero, Maria Del Pilar de; Armesto-Baztán, Sandra; Losada, Emilia Díaz

doi:10.1080/00173130903149140

Cited by 27 publications

(27 citation statements)

References 19 publications

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“…A high frequency and a dominant percentage of Poaceae pollen in the microscopic slides of bee bread from the Moravian Valley was also found by Warakomska et al [22], whilst Wróblewska [15] and Wróblewska et al [11] observed the same for bee bread from the area of Podlasie and northeastern Poland. This is also confirmed by the reports of Sá-Otero et al [12] from northwestern Spain, by Atanassova and Lazarova [25] from Bulgaria, and by Šauliené et al [13] from Lithuania. These authors very frequently recorded Poaceae pollen in the microscopic image of pollen loads collected from bees.…”

Section: Discussionsupporting

confidence: 81%

“…In Poland, the interest of bees in collecting oak pollen was confirmed by Wróblewska et al [11], who found Quercus pollen grains in bee bread from the northeastern region of Poland. Sá-Otero et al [12] also demonstrate that Quercus pollen occurred in pollen loads of honeybees in northwestern Spain, whereas Šauliené et al [13] found its presence in pollen loads in Lithuania. Maurizio and Grafl [14] stress that honeybees do not readily visit male inflorescences of Pinus.…”

Section: Discussionmentioning

confidence: 98%

“…Wróblewska [15] and Wróblewska et al [11] found raspberry and blackberry pollen in bee bread from the area of Podlasie and northeastern Poland. Ortiz and Polo [18] and Sá-Otero et al [12] recorded Rubus pollen grains in pollen loads of the honeybee in Spain as did Beil et al [19] in Germany. Pollen of Prunus type was recorded by Wróblewska [15] in bee bread from the Lublin region, and Klepacz-Baniak and Czekońska [20] found it in pollen loads sampled in the area of Cracow.…”

Section: Discussionmentioning

confidence: 99%

“…Diaz-Losada et al [38] found heather pollen grains in pollen loads from Spain and Italy. Furthermore, Diaz-Losada et al [38] and Sá-Otero et al [12] both recorded Erica cinerea and E. umbellata pollen grains in pollen loads from the northwestern area of Spain.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, pollen of this taxon was found by Beil et al [19] in pollen loads in Germany. Prunus-type pollen also occurred in pollen loads from the period of April and May sampled in the northeastern area of Spain [12] and has also been recorded from Islamabad, Pakistan [21].…”

Section: Discussionmentioning

confidence: 99%

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Pollen sources in the Bojanów forest complex identified on honeybee pollen load by microscopic analysis

2017

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The aim of this study was to determine sources of pollen for the honeybee in the Bojanów forest complex, Nowa Dęba Forest District (southeastern Poland). Sampling of pollen loads from bees extended from the beginning of May until the end of September 2016 and was carried out at 7-day intervals using pollen traps mounted at the entrance of beehives. A total of 73 pollen load samples were collected from the study area.Fifty-nine taxa from 31 plant families were identified in the analyzed material. From 4 to 21 taxa (average 9.5) were recorded in one sample. The pollen of Brassicaceae ("others"), Taraxacum type, Solidago type, and Rumex had the highest frequency in the pollen loads examined. Apart from these four taxa, pollen grains of Rubus type, Poaceae ("others"), Calluna, Fagopyrum, Trifolium repens s. l., Phacelia, Aster type, Melampyrum, Quercus, Cornus, and Veronica were recorded in the dominant pollen group. The forest habitat taxa that provided pollen rewards to honeybees in the Bojanów forest complex were the following: Rubus, Calluna, Prunus, Tilia, Frangula alnus, Pinus, Quercus, Cornus, Robinia pseudoacacia, Salix, and Vaccinium. Apart from forest vegetation, the species from meadows and wastelands adjacent to this forest complex, represented by Taraxacum, Rumex, Plantago, Poaceae, Trifolium repens, and Solidago, proved to be an important source of pollen. The study indicates that forest communities are a valuable source of pollen for pollinating insects from early spring through to late fall.

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Pollen sources in the Bojanów forest complex identified on honeybee pollen load by microscopic analysis

2017

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Pollen and stamen mimicry: the alpine flora as a case study

Lunau

Konzmann

Winter

et al. 2017

Arthropod-Plant Interactions

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Many melittophilous flowers display yellow and UV-absorbing floral guides that resemble the most common colour of pollen and anthers. The yellow coloured anthers and pollen and the similarly coloured flower guides are described as key features of a pollen and stamen mimicry system. In this study, we investigated the entire angiosperm flora of the Alps with regard to visually displayed pollen and floral guides. All species were checked for the presence of pollen-and stamen-imitating structures using colour photographs. Most flowering plants of the Alps display yellow pollen and at least 28% of the species display pollen-or stamen-imitating structures. The most frequent types of pollen and stamen imitations were (mostly yellow and UV-absorbing) colour patches on petals (65% of species displaying imitations), patterns of inflorescences (18%), stamen-like pistils (10%), and staminodes (6%), as well as three-dimensional structures such as convex lower lips and filamental hairs (\5%). Dichogamous and diclinous species display pollen-and stamen-imitating structures more often than non-dichogamous and non-diclinous species, respectively. The visual similarity between the androecium and other floral organs is attributed to mimicry, i.e. deception caused by the flower visitor's inability to discriminate between model and mimic, sensory exploitation, and signal standardisation among floral morphs, flowering phases, and co-flowering species. We critically discuss deviant pollen and stamen mimicry concepts and evaluate the frequent evolution of pollen-imitating structures in view of the conflicting use of pollen for pollination in flowering plants and provision of pollen for offspring in bees.

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