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Study of Some Biodemographic Parameters of Caryedon serratus Olivier (Coleoptera: Chrysomelidae) Insect Pest of Tamarind (tamarindus indica Lin.) Fruit, in Burkina Faso

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Advances in Entomology 2024年第2期12卷 67-77页

作者： Kilo Francine Marina Ki Koï Wenceslas Kam Emmanuel Kabore Antoine Sanon Zakaria Ilboudo Laboratoire d’Entomologie Fondamentale et Appliqué e (LEFA) UFR/SVT Universit&eacute Joseph KI-ZERBO Ouagadougou Burkina Faso Institut Supé rieur du D&eacuteveloppement Durable Universit&eacute de Fada N’gourma Fada N’gourma Burkina Faso

The lack of food security leads us to turn to the riches of the forest, namely non-timber forest products (NTFP) and timber forest products (TFP). In Burkina, these products are a source of income for families, improving their living conditions. tamarindus indica L. that is a NFTP, is widely used in both rural and urban areas. Unfortunately, tamarind is subject to attack by Caryedon serratus. Its biological activity begins on the fruit before the harvest. The aim of our study is to evaluate some biodemographic parameters of the insect pest C. serratus Olivier. First100 healthy T. indica pods were placed in contact with ten pairs of C. serratus for 24 hours. 25 pods, each carrying a maximum of two eggs, were divided into five batches of 5 pods. Then a pair of C. serratus aged less than 24 h was placed in contact with 4 healthy pods for 24 h. Every day, the pair was removed and transferred to another box containing 4 new healthy pods. A total of 20 replicates were performed. The results showed that C. serratus has an average lifespan of 14 days. However, the female (16 days) lived longer and laid an average of 34 eggs during her lifetime. The egg-laying period lasted 14 days, the number of eggs increased until reaching a maximum peak on the 4th day. C. serratus has an embryonic development time of 3 days and an emergence rate of 66.63%. However, the weight of males and females differed significantly (p = 0.0108). We found an intrinsic rate of natural increase of 0.12 and a population doubling time was 5.68 days. These results have enabled us to gain a better understanding of its development cycle and its capacity for regeneration. This allows us to implement control strategies for better stock protection.

关键词： Biodemographic Parameters Stock Caryedon serratus tamarindus indica

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Functional groups of Sahelian trees in a semiarid agroforestry system of Senegal

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Journal of Plant Ecology 2018年第3期11卷 375-384页

作者： Joseph S.Diémé Mayécor Diouf Cristina Armas Graciela MRusch Francisco I.Pugnaire Estación Experimental de ZonasÁridas Consejo Superior de Investigaciones CientíficasCtra.de Sacramento s/n04120 La CañadaAlmeríaSpain Centre National de Recherches Forestières Institut Sénégalais de Recherches Agricoles(CNRF/ISRA)DakarSenegal Norwegian Institute for Nature Research TrondheimNorway

Aims Addressing plant responses to water stress is critical to understand the structure of plant communities in water-limited environments and to forecast their resilience to future changes in *** a semiarid agroforestry system in the Sahelian savannah of Leona(Senegal),we selected nine common tree species and explored their stress-resistance *** species represent a variety of life forms and are of high regional socio-economic *** hypothesized that different species would show different suites of traits to cope with water stress and expected to identify functional groups differing in strategies to withstand water *** Along a dry and a wet season,we monitored four traits reflecting above-and below-ground strategies of resource acquisition such as predawn leaf water potential(ψpd),specific leaf area(SLA),leaf thickness and leaf area index(LAI).We also measured two mor-phological traits:trunk diameter and tree *** andψpd were measured six times during the dry and rainy seasons,and the other traits were measured *** Findings We identified two functional classes subdivided into two func-tional groups of each *** first class included deciduous and semi-deciduous species that generally had large SLA,low leaf thickness and small-to-intermediate inter-seasonal varia-tions inψ*** second class included evergreen species of two functional groups that differ in SLA,leaf thickness and the mag-nitude of inter-seasonal variations ofψpd throughout the *** four functional groups identified in this study represent plant strategies differing in their response to changing environmental conditions.

关键词： Acacia tortilis Adansonia digitata Balanites aegyptiaca Celtis integrifolia Combretum glutinosum Faidherbia albida functional traits Neocarya macrophyla Sclerocarya birrea tamarindus indica water stress

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