Life table of Hypothenemus hampei (Ferrari) in relation to coffee berry phenology under Colombian field conditions

Abstract

The overlap of generations of coffee berry borer (CBB), Hypothenemus hampei (Ferrari) under field conditions in countries like Colombia hinders the construction of life tables by the sampling of natural populations. In this paper, a field methodology to carry out regular measurements of CBB cohorts inside coffee berries of different ages until harvest, both in coffee trees and in infested berries placed on the ground, is developed and used to compare the life history parameters of CBB. Populations with berries at six ages in three experimental stations (without CBB control) and in a commercial farm in Colombia (with chemical CBB control regularly carried out) were used. The duration of the pre-oviposition period as well as the mortality and survival rates of founder females and the proportion of founders leaving infested berries were strongly influenced by the consistency of berries, with optimum conditions for CBB reproduction as from 120-150 days after flowering. No differences were found between stations for the number of CBB developmental stages; but they had larger values than the commercial farm. The latter also had more than twice the average rate of founders leaving infested berries recorded in the stations. Survival functions (cumulative probabilities of survival) for the pest differed among treatments and between the plant and ground micro-environments. Age of berries at infestation was positively related to the intrinsic rate of increase of borer population; whilst generation time and doubling time were inversely related. No differences were found between sites for the main demographic parameters of the pest. Key words: coffee berry borer, population parameters, integrated pest management Tabela de vida de Hypothenemus hampei (Ferrari) em relação à fenologia do fruto de café, sob condições de campo, na Colômbia RESUMO: A superposição de gerações da broca do café, Hypothenemus hampei (Ferrari) em condições de campo em países como a Colômbia dificulta a confecção de tabelas de vida pela amostragem de populações naturais. Desenvolveu-se uma metodologia de campo para realizar medições regulares de coortes da broca em frutos de café de diferentes idades até a colheita, tanto nas plantas quanto em frutos infestados colocados no solo. O método é usado para comparar parâmetros populacionais da praga em frutos de seis idades, em três estações experimentais (sem controle da praga) e em uma fazenda comercial (com controle químico da praga), na Colômbia. A duração do período de pre-oviposição, assim como as taxas de mortalidade e sobrevivência das fêmeas fundadoras e a proporção de fêmeas fundadoras que abandonaram frutos infestados foram fortemente influenciadas pela consistência dos frutos, com condições ótimas para a reprodução da praga a partir de 120-150 dias depois da floração. Não houve diferenças entre estações para o número de estágios de desenvolvimento da praga, mas os valores nestas foram maiores que na fazenda comercial. Esta última teve uma taxa de frutos abandonados duas vezes maior que a...

Retracted: Abridged Life Tables for Cephalonomia stephanoderis and Prorops nasuta (Hymenoptera: Bethylidae) Parasitoids of Hypothenemus hampei (Coleoptera: Curculionidae: Scolytinae) Reared on Artificial Diet

“…Mass production of both parasitoids depends on the host reproductive potential, and hence, these results provide insight as to why the parasitoids have been so unsuccessful in the field, because to proliferate they evidently need a range of host stages. If a wasp attacks an immature berry, it will encountered only eggs and young larvae which they may consume and kill the CBB female as well, but the female parasitoid will not produce any offspring (Baker 1999, Ruiz-Cardenas and Baker 2010). In addition, if the wasp arrives too late, they will find mostly adult CBB and have to wait until they start breeding, by which time harvest may intervene.…”

Coffee Berry Borer Joins Bark Beetles in Coffee Klatch

“…150 days old coffee berries ( C. arabica variety Ruiru 11) obtained from the Kiambu plantation described above. We used coffee berries in the yellow-orange exocarp stage, which is the developmental stage of the berry most attractive to H. hampei females in the field [70]. After carefully excising berries directly from coffee tree branches in the field without hand contact, using a sterile scalpel blade No.…”

Integrated Pest Management of Coffee Berry Borer: Strategies from Latin America that Could Be Useful for Coffee Farmers in Hawaii

“…The process of colonization of a healthy berry starts when a mated female initiates the search for new oviposition habitats [ 9 ]. Developing green coffee berries with >120 days growth post flowering and >20% dry weight are preferentially selected [ 8 , 19 ]. Younger green berries (≥60 days old) may also be infested by CBB, but the female has to wait in a penetration channel, until the berries achieve >20% dry weight in order to bore a gallery and initiate oviposition [ 8 , 19 ].…”