Pollination biology of cantharophilous and melittophilous Annonaceae and Cyclanthaceae in French Guiana [Elektronische Ressource] / vorgelegt von Holger Teichert

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Informations

• Publié par: universitat_ulm
• Publié le: 01 janvier 2008
• Nombre de lectures: 12
• Langue: English
• Poids de l'ouvrage: 1 Mo

Extrait

Pollination biology of
cantharophilous and
melittophilous Annonaceae
and Cyclanthaceae in
French Guiana


Dissertation
zur Erlangung des Doktorgrades Dr. rer. nat.
Fakultät der Naturwissenschaften der Universität Ulm






vorgelegt von

Holger Teichert
aus Aalen

2008






























Amtierender Dekan: Prof. Dr. Klaus-Dieter Spindler
Erstgutachter: Prof. Dr. Gerhard Gottsberger
Zweitgutachter: Prof. Dr. Manfred Ayasse
Tag der Promotion: 04.04.2008


Summary...................................................................................................................... 1
Zusammenfassung .................................................................................................... 17
Perfume-collecting male euglossine bees as pollinators of a basal angiosperm:
The case of Unonopsis stipitata (Annonaceae) ........................................................ 21
Introduction............................................................................................................... 22
Material and Methods .............................................................................................. 24
Observations and plant characteristics............................................................... 24
Odor sampling and identification........................................................................ 25
Electrophysiological recordings........................................................................... 26
Breeding system .................................................................................................... 27
Statistics ................................................................................................................. 27
Results........................................................................................................................ 27
Plant material........................................................................................................ 27
Observations on flower visitors ........................................................................... 28
Morphological and histochemical studies of the scent-producing area........... 31
Scent ....................................................................................................................... 32
Perception of U. stipitata volatiles by male bees................................................. 33
Breeding system .................................................................................................... 34
Discussion .................................................................................................................. 34
Literature................................................................................................................... 38
Heterodichogamy within a population of Anaxagorea prinoides (Annoaceae)
pollinated by nitdulid beetles………………..……………………………………..43
Introduction............................................................................................................... 44
Material and Methods .............................................................................................. 46
Plant characteristics and observation of flower visitors ................................... 46
Odor sampling and identification........................................................................ 46
Breeding system .................................................................................................... 47
Y-tube experiments............................................................................................... 47
Results........................................................................................................................ 48
Plant material and floral biology......................................................................... 48
Population phenology ........................................................................................... 50
Floral anthesis and floral visitors........................................................................ 51
Scent ....................................................................................................................... 54
Y-tube experiments............................................................................................... 55

Discussion .................................................................................................................. 56
Literature................................................................................................................... 62
A novel pollination mode: mushroom-like floral characteristics in
Duguetia cadaverica (Annonaceae) attract mycetophagous nitidulid beetles.….67
Introduction............................................................................................................... 68
Material and methods............................................................................................... 69
Study site and analyses......................................................................................... 69
Scent ....................................................................................................................... 70
Results........................................................................................................................ 71
Plant analysis......................................................................................................... 71
Phenology of individuals and the population ..................................................... 73
Flower scent........................................................................................................... 74
Pollinators.............................................................................................................. 75
Discussion .................................................................................................................. 76
Literature................................................................................................................... 78
Ecological relationships of Evodianthus funifer and other Cylanthaceae
with their associated derelomine (Curculionidae) beetles……………………….81
Introduction............................................................................................................... 82
Material and Methods .............................................................................................. 83
Species investigated, their characteristics and phenology ................................ 83
Odor sampling and identification........................................................................ 84
Nutritional chemistry of inflorescences and sterile plant parts........................ 85
Results........................................................................................................................ 85
Plant material and floral biology......................................................................... 85
Scent analyses........................................................................................................ 88
Morphological and histochemical studies of the staminodes............................ 90
Nutritional chemistry ........................................................................................... 91
Discussion .................................................................................................................. 94
Literature................................................................................................................... 98
Curriculum vitae..................................................................................................... 100
Danksagung ................................................................................................................. 102
Summary
Summary
Pollination biology of cantharophilous and melittophilous Annonaceae
and Cyclanthaceae in French Guiana
Thesis topic
Due to human impact tropical forests become fragmented and their preservation and
sustainable management receive more attention. Functioning plant-animal
interaction are crucial for long-term preservation of biodiversity in every rainforest.
Therefore, understanding the plant-animal interactions is the key to sustainable
management of this ecosystem. In undisturbed ecosystems, these interactions exist
in their most preserved state and provide the true account on the ecology of the
species concerned. The relationship between plants and their insect pollinators is one
of the most important interactions in the evolutionary history of angiosperms. Most
tropical plants are pollinated by insects, but only a fraction has been investigated and
information is completely missing for many evolutionary important taxonomical
groups.
The aim of the present study was to estimate pollination mechanisms of
selected species belonging to the families Annonaceae and Cyclanthaceae in their
original and undisturbed habitat. Annonaceae is an evolutionary old family, and their
members form an important component of tropical rainforests because of their
sp