Pollination biology ofSymphonia globulifera (Clusiaceae)

1996 ◽  
Vol 200 (1-2) ◽  
pp. 101-110 ◽  
Author(s):  
V. Bittrich ◽  
Maria C. E. Amaral
Keyword(s):  
Pollination Biology

Pollination biology of the Proteaceae in Australia and southern Africa

1987 ◽  
Vol 12 (4) ◽  
pp. 387-421 ◽  
Author(s):  
BRIAN G. COLLINS ◽  
TONY REBELO
Keyword(s):  
Southern Africa ◽  
Pollination Biology

Pollination biology of Geissomeria pubescens Nees (Acanthaceae) in a forest remnant in central Brazil

Botany ◽  
2014 ◽  
Vol 92 (3) ◽  
pp. 215-222 ◽  
Author(s):  
Raphael Matias ◽  
Hélder Consolaro
Keyword(s):  
Fruit Set ◽  
Floral Biology ◽  
Pollination Biology ◽  
Energy Availability ◽  
Open Pollination ◽  
Forest Fragment ◽  
Central Brazil ◽  
Forest Remnant ◽  
Fruit Formation ◽  
Nectar Availability

Specialized plants like those in genus Geissomeria Lindl. (Acanthaceae) seem to depend directly on pollination by hummingbirds for reproduction. The goal of this study was to investigate the pollination biology of Geissomeria pubescens Nees (Acanthaceae) in a forest fragment in the municipality of Catalão, state of Goiás, Brazil, including aspects of morphology, floral biology, energy availability from nectar, and reproductive system. Geissomeria pubescens has pendulous red flowers, tubular corolla, diurnal anthesis, and no odor. These floral traits characterize G. pubescens as an ornithophilous species. The total amount of energy available from nectar was 8.60 ± 2.87 cal·flower–1, and each individual produced up to 22.53 cal·day–1. Based on the resources offered by G. pubescens, the fragment studied may support up to 94.6 hummingbirds during the peak of nectar availability. Hummingbirds were the only flower visitors, and Thalurania furcata (Gmelin, 1788) was the main pollinator. Flowers from manual cross- and self-pollination treatments produced fruits, but fruit set was low compared with open pollination. These results, along with the lack of fruit set from agamospermy and spontaneous selfing, demonstrate the importance of hummingbirds for pollen flow and, consequently, for fruit formation in G. pubescens.

scholarly journals Bumblebee Preadators Reduce Pollinator Density and Plant Fitness

2004 ◽  
Vol 28 ◽  
pp. 94-97
Author(s):  
Reuven Dukas
Keyword(s):  
Food Reward ◽  
Fruit Set ◽  
Field Work ◽  
Pollination Biology ◽  
Food Sources ◽  
Plant Fitness ◽  
Predatory Activity ◽  
Selective Agents ◽  
Flower Visiting ◽  
Pollination Systems

Research in pollination biology has focused on the interactions between animals and the flowers they visit for food reward. However, other selective agents, including predators, seed feeders and herbivores, may affect pollination systems. Because flowers are predictable food sources for a variety of species, flowers are also reliable sites at which predators can locate flower-visiting animals. Prominent among pollinators' predators are beewolves (Philanthus spp), common sphecid wasps (Sphecidae) that prey almost exclusively on bees. My field work over three years indicates, first, that an area of approximately 50 square km surrounding a single bumblebee wolf (Philanthus bicinctus) aggregation had a low bumblebee (Bombus spp) density caused by intense predation by the wasps, and, second, that fruit set of the bumblebee pollinated western monkshood (Aconitum columbianum) was significantly lower at locations and times of bumblebee wolf activity than at control locations and times with no such predatory activity. These results indicate that predation can sometimes alter plant­pollinator interactions.

Semen-Like Floral Scents and Pollination Biology of a Sapromyophilous Plant Stemona japonica (Stemonaceae)

2015 ◽  
Vol 41 (3) ◽  
pp. 244-252 ◽  
Author(s):  
Gao Chen ◽  
Andreas Jürgens ◽  
Lidong Shao ◽  
Yang Liu ◽  
Weibang Sun ◽  
...  
Keyword(s):  
Pollination Biology ◽  
Floral Scents

scholarly journals Floral features, pollination biology and breeding system of Chloraea membranacea Lindl. (Orchidaceae: Chloraeinae)

2012 ◽  
Vol 110 (8) ◽  
pp. 1607-1621 ◽  
Author(s):  
Agustin Sanguinetti ◽  
Cristiano Roberto Buzatto ◽  
Marcelo Pedron ◽  
Kevin L. Davies ◽  
Pedro Maria de Abreu Ferreira ◽  
...  
Keyword(s):  
Breeding System ◽  
Pollination Biology

scholarly journals Autecological studies on Audouinia capitata (Bruniaceae). 3. Pollination biology

1993 ◽  
Vol 59 (2) ◽  
pp. 135-144 ◽  
Author(s):  
J.H. de Lange ◽  
C. Boucher ◽  
J.J.A. van der Walt
Keyword(s):  
Pollination Biology
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