Search publications of the members of the Royal Belgian institute of natural Sciences
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Jodoigne: le caveau des Glymes à Notre-Dame du Marché
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Morphology, molecules, and monogenean parasites: An example of an integrative approach to cichlid biodiversity
- The unparalleled biodiversity of Lake Tanganyika (Africa) has fascinated biologists for over a century; its unique cichlid communities are a preferred model for evolutionary research. Although species delineation is, in most cases, relatively straightforward, higher-order classifications were shown not to agree with monophyletic groups. Here, traditional morphological methods meet their limitations. A typical example are the tropheine cichlids currently belonging to Simochromis and Pseudosimochromis. The affiliations of these widespread and abundant cichlids are poorly understood. Molecular work suggested that genus and species boundaries should be revised. Moreover, previous morphological results indicated that intraspecific variation should be considered to delineate species in Lake Tanganyika cichlids. We review the genera Simochromis and Pseudosimochromis using an integrative approach. Besides a morphometric study and a barcoding approach, monogenean Cichlidogyrus (Platyhelminthes: Ancyrocephalidae) gill parasites, often highly species-specific, are used as complementary markers. Six new species are described. Cichlidogyrus raeymaekersi sp. nov., C. muterezii sp. nov. and C. banyankimbonai sp. nov. infect S. diagramma. Cichlidogyrus georgesmertensi sp. nov. was found on S. babaulti and S. pleurospilus, C. franswittei sp. nov. on both S. marginatus and P. curvifrons and C. frankwillemsi sp. nov. only on P. curvifrons. As relatedness between Cichlidogyrus species usually reflects relatedness between hosts, we considered Simochromis monotypic because the three Cichlidogyrus species found on S. diagramma belonged to a different morphotype than those found on the other Simochromis. The transfer of S. babaulti, S. marginatus, S. pleurospilus and S. margaretae to Pseudosimochromis was justified by the similarity of their Cichlidogyrus fauna and the intermediate morphology of S. margaretae. Finally parasite data also supported the synonymy between S. pleurospilus and S. babaulti, a species that contains a large amount of geographical morphological variation.
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Functional integument surface of easy bleeder sawfly larva, Rhadinoceraea micans (Hymenoptera, Tenthredinidae)
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Validating collections: taxonomy, faunistics, databases, Red Data Books and Site quality Assessment studies at the RBINS Entomology Department
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Ecological speciation is relatively rae in "Higer" Nematinae sawflies.
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Diversity of chemically-based defence strategies in sawfly larvae.
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Leaf-mining habit and defense by volatiles is not contgradictory in Pseudodineurini sawfly larvae.
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Ecologie chimique des stratégies de défense chez les larves de Symphyta. 7ème Conférence Interantionale Francophone d'Entomologie
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Chemistry of defensive secretion, and gregariousness in Craesus larvae (Hymenoptera, Tenthredinidae, Nematinae)
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Defence strategies in Argidae and Pergidae sawfly larvae
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Defence strategies in argid sawfly larvae
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The microhabitat hypothesis to explain differing chemically based defence strategies in herbivorous Hymenoptera
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Filming defensive behaviours in tenthredinid larvae
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Etho-ökologische Perspektive der Blattwespenlarven als Phytophagen und Beutetiere. Entomologentagung
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Biosynthetic origin of defensive compounds elucidated by use of stable isotopes.
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Multidisciplinary approach to easy bleeding, an anti-predator defence strategy of sawfly larvae
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Defence strategy in sawfly larvae by integument and hemolymph adaptations and host plant chemistry
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Feeding deterrent activity of Pteridium aquilinum (L.) Kuhn (Dennstaedtiaceae)
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Host specificity and host recognititon in tenthredinid sawflies: a case study with Rhadinoceraea nodicornis
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Description d'une nouvelle espèce afrotropicale d'Anomala Samouelle 1819 (Coleoptera, Scarabaeoidea, Tutelidae)
