Pollinators of Helleborus niger in Slovenian naturally occuring populations

Andrej Šušek (Author), Anton Ivančič (Author)

Abstract

The study is based on documentation and analysis of the major visitors and pollinators of the Christmas rose (Helleborus niger L.) flowers in Slovenian naturally occurring populations. The emphasis was put on 5 groups of insects: bees, bumblebees, large flies, small dipterous flies and pollinators of minor importance. Systematic observations took place in March 2003, at two different locations: on the valley of Bohinjska Bela and on the Peca Mountain. The first location was not far from a rural area, while the second one was in an isolated area, completely in the wild. The analysis of insect activity showed that there were obvious differences in frequency of visits among the insect groups investigated, locations and time of day. In the population of Bohinjska Bela, bees were the most important pollinators, with the highest activity occurred between 10 a.m. and 11 a.m. In the isolated population in Peca the most frequent visitors were small dipterous flies. The study suggests that the Christmas rose is probably an entomophylous (the most important pollinators are insects, such as bees and flies) and predominantly cross-pollinating species. The entomophylous nature appears to be closely associated with the specific botanic characteristics of flowers. Another pollinating agent is probably wind.

Keywords

chrismas rose;helleborus niger;wild populations;pollinators;open pollination;cross pollination;population dynamics;plant population;

Data

Language:	English
Year of publishing:	2006
Typology:	1.01 - Original Scientific Article
Organization:	UM FKBV - Faculty of Agriculture
UDC:	582.675
COBISS:	4801145
ISSN:	1581-9175
Parent publication:	Acta agriculturae Slovenica
Views:	995
Downloads:	66
Average score:	0 (0 votes)
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Other data

Secondary language:	Slovenian
Secondary title:	Opraševalci črnega teloha (Helleborus niger) v naravnih populacijah v Sloveniji
Secondary abstract:	Raziskava je bila opravljena na črnem telohu (Helleborus niger L.) in obsega dokumentiranje in analizo glavnih opraševalcev črnega teloha v naravnih populacijah. Osredotočili smo se na 5 skupin insektov: čebele, čmrlje, muhe, majhne dvokrilne insekte in opraševalce manjšega pomena. Sistematično opazovanje je potekalo v marcu 2003 na dveh lokacijah: v dolini Bohinjska Bela in na planini Peca. Prva lokacija je bila blizu naselja, medtem ko je bila druga lokacija daleč od ruralnega okolja v naravi. Analize opraševanja, povezane z aktivnostjo žuželk, nakazujejo, da obstajajo očitne razlike v pogostnosti obiska med proučevanimi skupinami žuželk, lokacijo in dnevnim časom. V populaciji Bohinjska Bela so bili najpomembnejši opraševalci čebele z največjo aktivnostjo med 10 in 11 uro zjutraj. V populaciji Peca so bili najpogostejši obiskovalci majhni dvokrilni insekti. Opazovanja kažejo, da je črni teloh verjetno prevladujoče tujeprašna, entomofilna vrsta (najpomembnejši opraševalci so insekti, predvsem čebele in muhe). Entomofilna narava je ozko povezana z botaničnimi lastnostmi cveta. Med možne opraševalce spada tudi veter.
Secondary keywords:	črni teloh;naravne populacije;oprašavanje;opraševalci;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 205-211
Volume:	ǂLet. ǂ87
Issue:	ǂšt. ǂ2
Chronology:	2006
ID:	10847714