Molecular phylogeny of Crematogaster subgenus Decacrema ants (Hymenoptera

Formicidae) and the colonization of Macaranga (Euphorbiaceae) trees

Heike Feldhaar, Brigitte Fiala, Juergen Gadau, Maryati Mohamed, Ulrich Maschwitz

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

To elucidate the evolution of one of the most species-rich ant-plant symbiotic systems, the association between Crematogaster (Myrmicinae) and Macaranga (Euphorbiaceae) in South-East Asia, we conducted a phylogenetic analysis of the ant partners. For the phylogenetic analysis partial mitochondrial cytochrome oxidase I and II were sequenced and Maximum Parsimony analysis was performed. The analyzed Crematogaster of the subgenus Decacrema fell into three distinct clades which are also characterized by specific morphological and ecological traits (queen morphology, host-plants, and colony structure). Our results supported the validity of our currently used morphospecies concept for Peninsula Malaysia. However, on a wider geographic range (including North and North-East Borneo) some morphospecies turned out to be species complexes with genetically quite distinct taxa. Our phylogenetic analysis and host association studies do not indicate strict cocladogenesis between the subgenus Decacrema and their Macaranga host-plants because multiple ant taxa occur on quite distinct host-plants belonging to different clades within in the genus Macaranga. These results support the view that host-shifting or host-expansion is common in the ants colonizing Macaranga. Additionally, the considerable geographic substructuring found in the phylogenetic trees of the ants suggests that allopatric speciation has also played a role in the diversification and the current distribution of the Decacrema ants.

Original languageEnglish (US)
Pages (from-to)441-452
Number of pages12
JournalMolecular Phylogenetics and Evolution
Volume27
Issue number3
DOIs
StatePublished - Jun 1 2003
Externally publishedYes

Fingerprint

Macaranga
Euphorbiaceae
Crematogaster
Hymenoptera
Ants
Phylogeny
ant
Formicidae
phylogeny
colonization
host plant
phylogenetics
host plants
Borneo
colony structure
allopatric speciation
Plant Structures
parsimony analysis
Far East
Malaysia

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Molecular Biology
  • Genetics

Cite this

Molecular phylogeny of Crematogaster subgenus Decacrema ants (Hymenoptera : Formicidae) and the colonization of Macaranga (Euphorbiaceae) trees. / Feldhaar, Heike; Fiala, Brigitte; Gadau, Juergen; Mohamed, Maryati; Maschwitz, Ulrich.

In: Molecular Phylogenetics and Evolution, Vol. 27, No. 3, 01.06.2003, p. 441-452.

Research output: Contribution to journalArticle

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