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Specialization, Constraints, and Conflicting Interests in Mutualistic Networks
Temporal, spatial and biotic variations in extrafloral nectar secretion by Macaranga tanarius
Extrafloral nectar of M. tanarius was secreted in complex patterns influenced by different biotic and abiotic factors; its production appeared to be adapted temporally and spatially in order to ensure optimal use of invested resources.
Studies of a South East Asian ant-plant association: protection of Macaranga trees by Crematogaster borneensis
In the humid tropics of SE Asia there are some 14 myrmecophytic species of the pioneer tree genus Macaranga (Euphorbiaceae), and strong aggressiveness and a mass recruiting system enable the ants to defend the host plant against many herbivorous insects.
Diversity, evolutionary specialization and geographic distribution of a mutualistic ant-plant complex: Macaranga and Crematogaster in South East Asia
Despite common sympatric distribution of Macaranga species, in most cases a surprisingly high specificity of ant colonization was maintained which was, however, often not species-specific but groups of certain plant species with identical ant partners could be found.
Extrafloral nectar production of the ant-associated plant, Macaranga tanarius, is an induced, indirect, defensive response elicited by jasmonic acid.
- M. Heil, T. Koch, A. Hilpert, B. Fiala, W. Boland, K. Linsenmair
- Environmental ScienceProceedings of the National Academy of Sciences…
- 30 January 2001
EFN production represents an alternative mechanism for induced, indirect defensive plant responses that are mediated via the octadecanoid signal transduction cascade, and quantitative dose-response relations were found between the increase in nectar production and both the intensity of leaf damage and the amounts of exogenously applied JA.
Thrips pollination of the dioecious ant plant Macaranga hullettii (Euphorbiaceae) in Southeast Asia.
Intraspecific pollen transfer by thrips was proved by pollen loads of thrips taken from receptive pistillate inflorescences of M. hullettii, presenting evidence for thrips pollination in the dioecious pioneer tree genus Macaranga.
Molecular analysis of phylogenetic relationships among Myrmecophytic macaranga species (Euphorbiaceae).
- F. Blattner, K. Weising, G. Bänfer, U. Maschwitz, B. Fiala
- BiologyMolecular Phylogenetics and Evolution
- 1 June 2001
A molecular investigation of the plant partners' phylogeny of the Macaranga-Crematogaster system suggests multiple rather than a single evolutionary origin of myrmecophytism, at least one reversal from obligate myrmicine genus Crem atogaster to nonmyrmecoptera, and one loss of mutualistic specifity.
A chloroplast genealogy of myrmecophytic Macaranga species (Euphorbiaceae) in Southeast Asia reveals hybridization, vicariance and long‐distance dispersals
- G. Bänfer, U. Moog, B. Fiala, M. Mohamed, K. Weising, F. Blattner
- Environmental Science, BiologyMolecular Ecology
- 18 October 2006
A large‐scale chloroplast genealogy is constructed based on DNA sequence data from the noncoding ccmp2, ccmp6, and atpB‐rbcL regions for 144 individuals from 41 Macaranga species, covering all major evolutionary lineages within the three sections that contain myrmecophytes.
Diversity of ant-plant interactions: protective efficacy in Macaranga species with different degrees of ant association
- B. Fiala, Harald Grunsky, U. Maschwitz, K. Linsenmair
- Environmental Science, BiologyOecologia
- 1 March 1994
The hypothesis that non-specific, facultative associations with ants can be advantageous for Macaranga plants is supported and food bodies appear to have lower attractive value for opportunistic ants than EFN and may require a specific dietary adaptation.
Studies on the south east Asian ant-plant associationCrematogaster borneensis/Macaranga: Adaptations of the ant partner
The ants are adapted to the plants so closely that they do not survive away from it, and their effective alarm system results in a mass attack, which provides adequate defence for the colony and the host plant.