BANANA WEEVIL (COSMOPOLITES SORDIDUS GERMAR) (COLEOPTERA: DRYOPHTHORIDAE) POPULATION DYNAMICS IN TERCEIRA ISLAND (AZORES) BANANA ORCHARDS

A espécie Metamasius hemipterus (Linnaeus, 1758) (Coleoptera: Curculionidae), recentemente vêm sendo associada a danos em pseudocaules de bananeira, assim como a coleobroca Cosmopolites sordidus (Germar, 1824) (Coleoptera: Curculionidae), praga-chave de bananeira, devido aos danos diretos e indiretos que resultam em queda de produtividade e rentabilidade ao produtor. O monitoramento da população destes insetos é de grande relevância no momento da tomada de decisão do manejo de pragas da cultura. Assim, objetivou-se com este estudo monitorar a dinâmica populacional de C. sordidus e M. hemipterus em plantio comercial de banana cv. Nanicão. Para monitoramento das espécies-praga, armadilhas do tipo pitfall modificadas iscadas com feromônio de agregação sintético e toletes de cana-de-açúcar foram distribuídas para captura de curculionídeos praga, no período de maio de 2012 a abril de 2013. Os dados avaliados mostraram que a frequência de captura de C. sordidus durante o período do experimento apresentou variação na densidade populacional do inseto nas duas épocas do ano, correspondentes as épocas de chuva e seca. A dinâmica populacional de C. sordidus, foi influenciada positivamente pela precipitação pluviométrica, apresentando maiores níveis populacional na época chuvosa, com picos nos meses de novembro de 2012, janeiro e fevereiro de 2013. Em relação a M. hemipterus observou-se que a população do inseto não sofreu qualquer influência de variáveis climáticas.Palavras-chave: monitoramento, moleque-da-bananeira, broca-rajada. POPULATION DYNAMICS OF Metamasius hemipterus AND Cosmopolites sordidus, IN CULTIVATION OF Musa sp, IN THE CITY OF SINOP-MT ABSTRACT: The specie Metamasius hemipterus (Linnaeus, 1758) (Coleoptera: Curculionidae) has recently been associated with damage to banana pseudoculars, as well as the Coleobroca Cosmopolites sordidus (Germar, 1824) (Coleoptera: Curculionidae), a key plague of banana because the direct and indirect damages that result in a fall in productivity and profitability to the producer. The monitoring of the population of these insects is of great relevance at the moment of the decision making of the pest management of the crop. The objective with this study was to monitor the populational dynamics of C. sordidus and M. hemipterus in commercial plantation of banana cv. Nanicão. Modified pitfall-baited pitfalls with synthetic aggregation pheromone and sugarcane rods were distributed to catch curcumin curculionídeos from May 2012 to April 2013. The data evaluated showed that the frequency of capture of C. sordidus during the experiment period showed variation in the population density of the insect in the two seasons of the year, corresponding to rainy and dry seasons. The population dynamics of C. sordidus were positively influenced by rainfall, presenting higher population levels in the rainy season, with peaks in November 2012, January and February of 2013. In relation to M. hemipterus, it was observed that the population of the insect was not influenced by climatic variables.Keywords: monitoring, banana weevil, West Indian sugarcane borer.

Download Full-text

Effect of environment and fallow period on Cosmopolites sordidus population dynamics at the landscape scale

Bulletin of Entomological Research ◽

10.1017/s0007485312000089 ◽

2012 ◽

Vol 102 (5) ◽

pp. 583-588 ◽

Cited By ~ 6

Author(s):

P.-F. Duyck ◽

E. Dortel ◽

F. Vinatier ◽

E. Gaujoux ◽

D. Carval ◽

...

Keyword(s):

Population Dynamics ◽

Environmental Factors ◽

Insect Pests ◽

Agricultural Practices ◽

Environmental Data ◽

Cosmopolites Sordidus ◽

Pheromone Traps ◽

Banana Weevil ◽

Data Set ◽

Fallow Period

AbstractUnderstanding how the population dynamics of insect pests are affected by environmental factors and agricultural practices is important for pest management. To investigate how the abundance of the banana weevil, Cosmopolites sordidus (Coleoptera: Curculionidae), is related to environmental factors and the length of the fallow period in Martinique, we developed an extensive data set (18,130 observations of weevil abundance obtained with pheromone traps plus associated environmental data) and analysed it with generalized mixed-effects models.At the island scale, C. sordidus abundance was positively related to mean temperature and negatively related to mean rainfall but was not related to soil type. The number of insects trapped was highest during the driest months of the year. Abundance of C. sordidus decreased as the duration of the preceding fallow period increased.The latter finding is inconsistent with the view that fallow-generated decomposing banana tissue is an important resource for larvae that leads to an increase in the pest population. The results are consistent with the view that fallows, in association with pheromone traps, are effective for the control of the banana weevil.

Download Full-text

Field studies on the susceptibility of six plantain cultivars to infestation by the banana weevil, Cosmopolites sordidus Germar (Coleoptera: Curculionidae) in Ghana

Ghana Journal of Agricultural Science ◽

10.4314/gjas.v40i2.2168 ◽

2008 ◽

Vol 40 (2) ◽

Author(s):

AA Nkakwa ◽

K Afreh-Nuamah ◽

D Obeng-Ofori ◽

EKS Ahiekpor

Keyword(s):

Field Studies ◽

Cosmopolites Sordidus ◽

Banana Weevil

Download Full-text

Variation among banana weevil Cosmopolites sordidus (Germar) populations in Uganda as revealed by AFLP markers and corm damage differences

Agriculture & Food Security ◽

10.1186/s40066-018-0227-8 ◽

2018 ◽

Vol 7 (1) ◽

Cited By ~ 1

Author(s):

Charles K. Twesigye ◽

Kenneth Ssekatawa ◽

Andrew Kiggundu ◽

Wilberforce Tushemereirwe ◽

Enock Matovu

Keyword(s):

Aflp Markers ◽

Cosmopolites Sordidus ◽

Banana Weevil

Download Full-text

Evidence for the presence of chemicals attractive to the banana weevil, Cosmopolites sordidus (Coleoptera: Curculionidae) in dead banana leaves

Bulletin of Entomological Research ◽

10.1017/s0007485399000632 ◽

1999 ◽

Vol 89 (6) ◽

pp. 485-491 ◽

Cited By ~ 11

Author(s):

H. Braimah ◽

H.F. van Emden

Keyword(s):

Host Plant ◽

Leaf Senescence ◽

Integrated Management ◽

Dead Leaf ◽

Cosmopolites Sordidus ◽

Banana Weevil ◽

Entomogenous Fungi ◽

Plant Odours ◽

Banana Leaves ◽

Soybean Leaves

AbstractThe effects of host and non-host plant odours on the foraging responses of the banana weevil, Cosmopolites sordidus (Germar), were investigated in the laboratory through arena and olfactometer bioassays. Contrary to previous reports that banana rhizome and pseudostem were the most attractive parts to the weevil, dead leaves were most preferred. Comparison of dead banana leaves with dead leaves of other plants showed that attractant odours were present in yam, cocoyam and dead grasses but absent in cocoa and soybean leaves. Complete leaf senescence while the leaf was attached to the mother plant proved necessary for the development of the dead-leaf-based odours but the involvement of microbial organisms could not be demonstrated. It is possible that dead-leaf-based attractants could be used in combination with microbials such as entomogenous fungi and nematodes in integrated management of C. sordidus.

Download Full-text