Ethiopia is remarkably rich in its biological, ecological and landscape diversity and is home to outstanding natural bio-resources such as a number of herbs, aromatic and medicinal plants. The present study was carried out to study the composition, distribution and economic importance of insect pests of prioritized aromatic (Mentha sp., lemon verbena, fennel, rosemary, rosadamascene, oregano, p...

Abstract Between 2005 and 2015, the forest area occupied by maritime pine trees in Continental Portugal decreased about 10.6%, existing volume 18.4% mainly due to fires pests (e.g., nematode) that occurred during this period. The purpose of study was evolution land use environmental impact 1 m 3 pine, standing Portuguese forest, period using model Milà i Canals based on soil organic matter meas...

Sweetpotato (Ipomoeae batatas (L.) Lam.) is an important food crop affected by several pests throughout the world, especially in tropical, subtropical, and temperate regions. Although Japan is relatively free from many serious sweetpotato pests, some pests, especially soil-borne pathogens, viruses, and insects such as plant-parasitic nematodes and weevils, cause severe damage in Japan. In this ...

Elicitors are compounds, which activate chemical defences in plants. Various biosynthetic pathways are activated in treated plants depending on the compound used. The most intensively studied elicitor for manipulating defence pathways in plants is methyl jasmonate, which modifies e.g. the production of terpenoids, the main constituents of conifer oleoresin. Other commonly tested chemical elicit...

The spined soldier bug, Podisus maculiventris (Say), is an important biological control agent of agricultural and forest pests; and it preys on eggs and larvae of lepidopteran and coleopteran species. Genetic variability among field samples collected from Michigan, Mississippi, Missouri, Florida and established laboratory colonies was examined using Amplified Fragment Length Polymorphism-Polyme...

Delayed emergence, a life history feature of many insects living in unpredictable environments, can have major consequences for the dynamics of host–parasitoid interactions, which vary according to their physiological interactions. We studied, through simple modeling, the significance of prolonged diapause on the suppression levels achieved by parasitoids and illustrate our case with a system i...

Advances in genomics, the study of all the genetic material (i.e. the genome) of an organism, have been remarkable in recent years. Publication of the first draft of the human genome in 2001 was a milestone, quickly followed by that of the first crop (rice) in 2002 and the first farm animal (chicken) in 2004. Huge technological advancements have meant that sequencing has become dramatically qui...

The rotation length is a key component of even-aged forest management systems. Using Fennoscandian forestry as a case, we review the socio-ecological implications of modifying rotation lengths relative to current practice by evaluating effects on a range of ecosystem services and on biodiversity conservation. The effects of shortening rotations on provisioning services are expected to be mostly...

C>ne of the most apparent benefits of forest genomics progratntnes is t o provide genotypic information on the original sclectioris of tree itn[xovemcnt programmes worlclwide. In many brcecling programmes, branches from these selections were graftecl onto seedlings and the grafted seectlings composeci the first seeci orchards for planting programmes. With aclvanced generation orcharcis or new v...

2015, Raff a et al. 2015). Given the potential interactions of insect outbreaks with other biotic and abiotic disturbances and the potentially strong impact of changing disturbance regimes on forest resources (Buma 2015), investigating the climate drivers of bark beetle outbreaks is of paramount importance. In Europe, Ips typographus is considered one of the most destructive pests of conifer fo...