|
|
|
| Registros recuperados: 10 | |
|
| |
|
| |
|
|
| Gravendeel, B.; Vogel, E.F. de. |
| Section Moniliformes Carr of the orchid genus Coelogyne is revised using morphological and molecular data. Twelve species are recognised, including two new ones (C. chanii and C. renae). and a dubious one (C. crassiloba). A combined analysis of morphological characters, and sequences of the nrDNA ITS region, matK gene, trnT-trnL intergenic spacer, trnL intron and trnL-trnF intergenic spacer supports the monophyly of the section as here recognised. Persistence of the rhizome scales, shape of the margin of the leaves, inflorescence type, shape of the rachis, its nodes and pedicel scars, indument of the floral bracts, lip size and depth of the sinus of the lateral lobes of the hypochile seem to be phylogenetically informative characters. Shape of the leaf... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coelogyne; Section; Moniliformes; MatK; NrDNA ITS; Phylogeny; TrnT-trnF. |
| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/525003 |
| |
|
| |
|
| |
|
|
| Subedi, A.; Chaudhary, R.P.; Achterberg, C. van; Heijerman, T.; Lens, F.; Dooren, T.J.M. van; Gravendeel, B.. |
| • Premise of the Study: Although many species in the orchid genus Coelogyne are horticulturally popular, hardly anything is known about their pollination. Pollinators of three species were observed in the fi eld in Nepal. This information is urgently needed because many orchid species in Nepal are endangered. Whether the exudates produced by extrafl oral nectaries played a role in protection against herbivory was also investigated. • Methods: Pollinators of C. fl accida , C. nitida , and Otochilus albus were filmed, captured, and identifi ed. Ant surveys and exclusion experiments were carried out. To investigate whether pollinators are needed for fruit set, plants were wrapped in mesh wire bags. Infl orescence stems were examined with microscopy. Fehling... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ants; Apis cerana; Bombus kashmirensis; Coelogye; Herbivory; Nectary-modified stomata; Nepal; Otochilus; Pholidota; Pollination. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/430082 |
| |
|
|
| Przybyłowicz, T.; Roessingh, P.; Groot, A.T.; Biesmeijer, J.C.; Oostermijer, J.G.B.; Chittka, L.; Gravendeel, B.. |
| Pollination based on insect deception has been debated in the scientific community since it was first reported over two hundred years ago. A vast majority of deceptive syndromes occur within the orchid family. While many cheating flowers have been described and are well known, there are still many curious cases that need further investigation. One prime example of such a case is Cypripedium calceolus, known as European lady’s slipper orchid. While the flower has been of interest to many prominent scientists for over a century, its pollination is still not fully understood. Both visual and olfactory cues seem to play an important role in pollinator attraction. In this study we focussed on the olfactory cues in order to explore their relationship (in future... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Bees; Behaviour; Chemical mimicry; Deception; EAG; Pollination; 42.75. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/419174 |
| |
|
| |
|
|
| Sierra, S.E.C.; Gravendeel, B.; Vogel, E.F. de. |
| Section Verrucosae Pfitzer & Kraenzl. of the genus Coelogyne Lindl. is revised using morphological and molecular data. Eight species are recognized, including two new ones ( C. marthae and C. verrucosa). One name is reduced to synonymy. Four species formerly included by several authors in sect. Verrucosae (C. brachyptera, C. papillosa, C. parishii and C. virescens) are excluded. A total evidence analysis of morphological characters and ITS and matK sequence data supports the monophyly of the section as here recognized. Coelogyne virescens (sect. Brachypterae) is identified as nearest neighbour to the species of sect. Verrucosae. The number of sterile bracts on the rhachis and the shape of the ornamentation on the epichile appear to be phylogenetically... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coelogyne sect. Verrucosae; MatK; Orchids; Phylogeny; Ribosomal ITS; Systematics. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/524865 |
| |
|
|
| Schilthuizen, M.; Gravendeel, B.. |
| Left-right asymmetry patterns in the body shapes of animals and plants have been a continuous source of interest among biologists. Recently, inroads have been made to developing a coherent research programme that makes use of the unique fact that chiral patterns may be studied (and generalities deduced) by comparisons across many unrelated groups, even across Kingdoms. The papers delivered at the symposium ‘Evolution of Chirality’ during the 2011 European congress of evolutionary biology (ESEB) provide examples of the various research programs that are currently developing within this field. The present paper provides a summary of the symposium, an introduction to this Special Issue of Contributions to Zoology, as well as suggestions for further... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Chirality; Development; Evolution; Evo-devo; 42.21. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/419170 |
| |
| Registros recuperados: 10 | |
|
|
|
