Articles

Host plant diversity of Sesamia calamistis: cytochrome b gene sequences reveal local genetic differentiation

G. O. Ong’amo, B. P. Le Rü, P. Moyal, P.-A. Calatayud, P. Le Gall, C. K. P. O. Ogol, E. D. Kokwaro, C. Capdevielle-Dulac & J.-F. Silvain

Résumé :

Sesamia calamistis Hampson (Lepidoptera: Noctuidae) is one of the indigenous stem borer pests associated with maize (Zea mays L.) and sorghum [Sorghum bicolor (L.) Moench] (both Poaceae) in Africa. Its pest status varies across the continent and this has been attributed to variation in diet breadth and ecological preferences among populations. Its larvae were found on 12 plant species during a study initiated at four sites (Muhaka, Mtito Andei, Kakamega, and Suam) in Kenya to estimate its diet breadth and genetic population structure. Ten of the infested plant species belonged to the family Poaceae [Echinochloa haploclada (Stapf) Stapf, Eleusine corocana L., Eleusine jaegeri Pilg., Panicum deustum Thunb, Panicum maximum Jacquin, Pennisetum purpureum Schumacher, Setaria verticillata (L.) P. Beauv., Sorghum arundinaceum (Desvaux) Stapf, S. bicolor, and Z. mays]; the other two were Cyperaceae: Cyperus distans L. and Cyperus dives Delile. Combined with collections from other African countries (Uganda, South Africa, Benin, Ghana, Nigeria, and Togo), comparisons of partial cytochrome b sequences revealed the presence of 68 haplotypes that differentiated into clades I and II. In Kenya, the two clades colonized different regions, except in Mtito Andei where they co-existed. Individuals from Mtito Andei could be separated based on their host plants: clade I with 14 haplotypes was found mainly on maize (78.6%), whereas clade II with 10 haplotypes was found mainly among wild host plants (63.6%). Detection of divergence among these clades with cytochrome b suggests that their evolutionary separation may have taken place about one million years ago. This article discusses the potential implication of this differentiation for the management of S. calamistis as a pest of maize and sorghum in Africa.

Entomologia Experimentalis et Applicata 128: 154–161, 2008

DOI: 10.1111/j.1570-7458.2008.00735.x

Neue Beiträge zur Kenntnis der Cetoniinae von Malaysia (Coleoptera,Scarabaeidae)

Dragan Pavicevic

Résumé :

This paper deals with the description of Cetoniinae from the Malayan peninsula. The following new taxa are described: Plectrone borneensis malesiana ssp.n., Clinteria tosevski sp.n., Dicheros (Coryphocera) miksici sp.n and Glycosia tricolor malesiana ssp.n. The hitherto unknown males of Taeniodera laterimacula KRAATZ, 1894, and Mecinonota rataji MIKSlC, 1980, as well as the hitherto unknown females of Theodosia perakensis MOSER, 1901, Dicheros malayanus (WALLACE, 1867) and Paravhabdotis setigera (SCHOCH, 1898) are described. A remark concerning the systematical position of Glycyphana (Glycyphaniola) aspera (WALLACE, 1867) is given.

Entomofauna, ZEITSCHRIFT FÜR ENTOMOLOGIE, Januar 1984, 21-31

Contribution to the knowledge of the Cicindelidae of Benin with collecting notes (Coleoptera Cicindelidae)

Arnošt Kudrna & Philippe Le Gall

Résumé :

A checklist of Coleoptera Cicindelidae presently known from Benin is given. Nine taxa are recorded for the first time from this country. Collecting data, habitat and behaviour observations of adults made by the first author during two expeditions are given along with collecting data provided by the second author.

Biodiversity Journal, 2014, 5 (4): 459–470

Zwei neue Cetoniinae-Arten aus der Orientalischen Region (Coleoptera,Scarabaeidae)

Dragan Pavicevic

Résumé :

This paper concerns with the description of Taeniodera beaudouini sp.n and Protaetia (Caloprotaetia) wongi sp.n., both taken in Malaysia.

Entomofauna, Zeitschrift fur entomologie, Oktober 1984, pp 275-284

Diet of Zonocerus variegatus (Linné, 1758) (Orth., Acrididae) in cassava fields in Bénin

Ph. Le Gall, Z. Djihou, G. Tchenga and Ch. J. Lomer

Résumé :

This paper presents the results of a study on the diet of Zonocerus variegates in cassava agro-ecosystems at Allada, south Benin. The diet was determined by the analysis of plant fragments in the faeces of insects sampled in the fields. The grasshoppers studied consumed 21 plant species among the 81 found in the fields. Cassava, maize, Mallotus oppositifolius and Chromolaena odorata were the major food plants for Z. variegatus in this system. The presence of Z.variegatus in different fields was observed depending on the season and the presence of certain plant species. There was no relationship between plant frequency in the diet and in the field. Cassava was the preferred food resource for mature nymphs and adults. During the dry season, young nymphs stayed near the hatching sites and where good food resources were available. At this time, the grasshoppers were present in a field where cassava was not abundant but where maize and weeds were available. During the dry season, Z. variegatus had a broader diet than during the wet season. This contradicts the current hypothesis that the water content of plants and the floral diversity determines food preference. The dry season is also the time when C. odorata leaves were found in the faeces of both adults and nymphs. These observations made in West Africa are similar to those made in Central Africa, particularly for the number of plant species found in the faeces, 21 (26% of all plant species found in the fields) in Bénin and 17 (23%) in the Congo. The increase of the sample size and the great differences between the ecoregional situation of the study sites do not substantially change the number of plant species included in the diets. In the area covered by this study, C. odorata is not the major substitute for cassava during the dry season, although it remains a major food source and an especially visible food resource.

J. Appl. Ent. 127, 435–440 (2003)

Eine neue Protaetia-Art von den Philippinen (Coleoptera, Scarabaeidae, Cetoniinae)

Dragan Pavicevic

Résumé :

This paper concerns with the description of Protaetia (Euprotaetia) inexpectata sp.n., taken in Philippines.

Entomofauna, Zeitschrift fur entomologie, Marz 1986, pp 117-120

Les Cétoines du Mbam-Minkom, un site menacé par l’irbanisation de la region de Yaoundé (Cameroun) (Coleoptera, Scarabaeoidea, Cetoniidae)

Philippe Le Gall, le Club CJRD-CIAH et Roger Kamgang

Résumé :

Dans le cadre de ses projets d’initiation à la recherché scientifique, l’IRD apporte son concours à l’élaboration et à la mise en oeuvre de projets scientifiques par des clubs regroupant des jeunes élèves et étudiants. Ce travail a été réalisé grâce à ce programme de soutien. Le club CJRD CIAH est né d’un partenariat signé en 2006 entre une association de droit Camerounais, le Collectif Inter-Africain des Habitants (CIAH) et l’IRD. Il regroupe de jeunes gens, élèves et étudiants ; des animateurs scientifiques, généralement des cadres du CIAH ; et un conseiller scientifique. Cette équipe conduit chaque année une recherche d’interêt scientifique. Le but est de familiariser les jeunes avec les outils et les méthodes de la recherche dans la perspective de promouvoir la culture scientifique.

Le Coléoptériste 14 (3) : 171-180

Eine neue Cetoniinae-Art von der Malaiischen Halbinsel (Coleoptera, Scarabaeidae)

Dragan Pavicevic

Résumé :

This paper concerns with the description of Thaumastopeus gloriosus sp.n., taken in Malaysia.

Entomofauna, Zeitschrift fur entomologie, Oktober 1986, pp 369-372

LE CHOIX DES PLANTES NOURRICIÈRES ET LA SPÉCIALISATION TROPHIQUE CHEZ LES ACRIDOIDEA (ORTHOPTERES)

Philippe Le Gall

Résumé :

Les études récentes ont montré la diversité des régimes alimentaires et des relations acridiens-plantes. Toutes les étapes de la spécialisation trophique, de la monophagie à la Polyphagie sont observées. Les différents facteurs susceptibles de réduire le spectre de plantes consommables par une population acridienne sont envisagés à travers les exemples pris dans la faune ouest-africaine et la littérature. La taxonomie des plantes intervient seulement dans la définition de trois grands types de régime : graminivore, non-graminivore et mixte. La constitution biochimique, la distribution spatiale, le cycle annuel des végétaux doivent être considérés ensemble pour tenter d’expliquer les situations décrites. La structure du  tapis végétal est un élément fondamental dans la description de la niche écologique des criquets. Enfin, les Orthoptères sont l‘objet  d’une importante prédation. Les mécanismes d’échappement au prédateur créent des contraintes essentielles dans la mise en place des relations criquets-plantes. La plante est non seulement la source nutritive, mais aussi l’habitat du criquet. Les deux composantes peuvent être ou non confondues dans la même espèce végétale.

Bull. Ecol., t. 20, 3, 1989, p.245-261

Beitrag zur Kenntnis der philippinischen Cetoniinae (Coleoptera,Scarabaeidae)

Dragan Pavicevic

Résumé :

Protaetia (Protaetia) elizabethae sp.n., Protaetia (Euprotaetia) endroedii negricola ssp.n.,and the ϙ Phadimus rafaelii MIKSlC,1977, are described. New records and corrections on some known species are given.

Entomofauna, Zeitschrift fur entomologie, Marz 1988, pp 169-179

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