Search Results - "Teugels, Guy G"

Marine incursion: the freshwater herring of Lake Tanganyika are the product of a marine invasion into west Africa by Wilson, Anthony B, Teugels, Guy G, Meyer, Axel

“…The spectacular marine-like diversity of the endemic fauna of Lake Tanganyika, the oldest of the African Great Lakes, led early researchers to suggest that the…”
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First data on an index of biotic integrity (IBI) based on fish assemblages for the assessment of the impact of deforestation in a tropical West African river system by TOHAM, A. K, TEUGELS, G. G

“…African tropical rainforests, and especially their freshwater biodiversity, are seriously threatened by ongoing industrial deforestation. Sound ecological…”
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Intraspecific variation in limblessness in vertebrates: a unique example of microevolution by ADRIAENS, DOMINIQUE, DEVAERE, STUN, TEUGELS, GUY G, DEKEGEL, BARBARA, VERRAES, WALTER

“…The variation in limb reduction in vertebrates has generally been observed as characterizing higher‐level taxa. Such structural changes are thus considered to…”
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Fish diversity and its relationships with environmental variables in a West African basin by KOUAMELAN, Essetchi P, TEUGELS, Guy G, N'DOUBA, Valentin, GOULI GOORE BI, KONE, Tidiani

“…Fish distribution in relation with environmental variables was investigated in the Boubo River, a coastal river in Ivory Coast. Fourty freshwater fish species…”
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Food habits of brackish water tilapia Sarotherodon melanotheron in riverine and lacustrine environments of a West African coastal basin by KONE, Tidiani, TEUGELS, Guy G

“…The diet of the brackish water tilapia Sarotherodon melanotheron is studied in various riverine and lacustrine systems of the Bia River basin (Côte d'Ivoire)…”
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Phylogeographic patterns in populations of the black-chinned tilapia complex (Teleostei, Cichlidae) from coastal areas in West Africa: support for the refuge zone theory by Falk, Thomas M, Teugels, Guy G, Abban, Eddie K, Villwock, Wolfgang, Renwrantz, Lothar

“…Within the tilapiines, a major African cichlid lineage, quite limited genetic informations are available on phylogenetic interrelationships and…”
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Morphology of the cranial system of Platyclarias machadoi: interdependencies of skull flattening and suspensorial structure in Clariidae by Devaere, Stijn, Adriaens, Dominique, Teugels, Guy G, Verraes, Walter

“…The African catfish Platyclarias machadoi stands out from other clariid species by its extremely dorsoventrally flattened skull. This paper focuses on the…”
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Comparative study on the cranial morphology of Gymnallabes typus (Siluriformes: Clariidae) and their less anguilliform relatives, Clariallabes melas and Clarias gariepinus by Cabuy, Erik, Adriaens, Dominique, Verraes, Walter, Teugels, Guy G.

“…We compare the cranial morphology of four fish species with an increasing anguilliformism in the following order: Clarias gariepinus, Clariallabes melas,…”
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Effects of storage and incubation temperature on the viability of eggs, embryos and larvae in two strains of an African catfish, Heterobranchus longifilis (Siluriformes, Clariidae) by Nguenga, D, Teugels, G.G, Legendre, M, Ollevier, F

“…Two experiments, dealing with short-term storage of ova and thermal conditions to optimize gamete and eggs management in hatcheries of the African catfish,…”
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Intraspecific variation in limblessness in vertebrates: a unique example of microevolution by ADRIAENS, DOMINIQUE, DEVAERE, STUN, TEUGELS, GUY G., DEKEGEL, BARBARA, VERRAES, WALTER

“…The variation in limb reduction in vertebrates has generally been observed as characterizing higher‐level taxa. Such structural changes are thus considered to…”
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Influence of tropical seasonal changes on oocyte diameter, responses to hormonal induction and hatching quality in two strains of the catfish, Heterobranchus longifilis Val. (Clariidae) by Nguenga, David, Teugels, Guy G, Legendre, Marc, Ollevier, Frans

“…A comparison was made between the oocyte diameter, pseudo‐absolute fecundity (PAF) and egg quality of two strains of the catfish, Heterobranchus longifilis,…”
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Redescription of Dolichallabes microphthalmus (Poll, 1942) (Siluriformes, Clariidae) by Devaere, Stijn, Teugels, Guy G, Adriaens, Dominique, Huysentruyt, Frank, Verraes, Walter

“…As a part of the general revision of anguilliform clariid genera and species, the status of Dolichallabes microphthalmus Poll, 1942, is reviewed, based on…”
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Genetic Evidence for Monophyly of the Genus Heterobranchus and Paraphyly of the Genus Clarias (Siluriformes, Clariidae) by Agnese, Jean François, Teugels, Guy G

“…A 579 base-pairs fragment of the cytochrome b gene has been sequenced for the four Heterobranchus species, four Clarias species, and Channallabes apus…”
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The Bathyclarias-Clarias species flock. A new model to understand rapid speciation in African great lakes by Agnèse, J F, Teugels, G G

“…Phylogenetic relationships between seven species of the catfish species flock from Lake Malawi (genus Bathyclarias) and other Clariid catfish have been…”
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Fertilization, hatching, survival and growth rates in reciprocal crosses of two strains of an African catfish Heterobranchus longifilis Valenciennes 1840 under controlled hatchery conditions by Nguenga, D, Teugels, G G, Ollevier, F

“…A diallelic cross between two strains [Layo strain (LS) and Noun strain (NS)] of the catfish Heterobranchus longifilis Valenciennes was carried out under…”
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Intraspecific variation in the postcranial skeleton morphology in African clariids: a case study of extreme phenotypic plasticity by DE SCHEPPER, NATALIE, ADRIAENS, DOMINIQUE, TEUGELS, GUY G., DEVAERE, STIJN, VERRAES, WALTER

“…Taxonomic relationships within the Clariidae, especially within the anguilliform species, are currently ambiguous due to the lack of a reliable structure of…”
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Morphology and spatial constraints in a dorso-ventrally flattened skull, with a revised species description of Platyallabes tihoni (Poll, 1944) by Devaere, Stijn, Adriaens, Dominique, Teugels, Guy G., Verraes, Walter

“…This study details the morphology of Platyallabes tihoni (Poll, 1944 ) as part of a complete revision of the anguilliform clariids. The overall body form of…”
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Comparative study on the cranial morphology ofGymnallabes typus (Siluriformes: Clariidae) and their less anguilliform relatives,Clariallabes melas andClarias gariepinus by Cabuy, Erik, Adriaens, Dominique, Verraes, Walter, Teugels, Guy G.

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Artificial propagation of the African catfish Hererobranchus longifilis (Siluroidei; Clariidae): Description of a simple technique to avoid sacrificing male broodfish for the obtention of milt by Nguenga, David, Breine, Jan J, Teugels, Guy G, Ollevier, Frans

“…Nguenga et al describe a technique for the routine ablation of the testes in Heterobranchus longifilis without killing the donor males. The advantages of this…”
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Artificial propagation of the African catfish Heterobranchus longifilis (Siluroidei; Clariidae): Description of a simple technique to avoid sacrificing male broodfish for the obtention of milt by Nguenga, David, Breine, Jan J., Teugels, Guy G., Ollevier, Frans

“…In clariid catfish culture, it is a common practice to sacrifice male broodfish to remove the testes during artificial fertilization of eggs. The present paper…”
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