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Biology and ecology of Juniperus phoenicea – J. turbinata – J. canariensis complex. III. Reproduction, herbivory, utilization, conservation
Rzadkie i reliktowe chrząszcze saproksyliczne w Drawieńskim Parku Narodowym - liczebność, rozmieszczenie i propozycje ochrony
The invasive ambrosia beetle, Gnathotrichus materiarius (Coleoptera: Curculionidae), in Central Europe
Abstract Gnathotrichus materiarius Fitch, 1858 is an invasive bark beetle that colonizes conifers and has spread widely in Europe. The beetle was introduced from North America to Western Europe, where it was first detected in France in 1933. In countries of Western and Northern Europe, the first detections were found at ports or airports, which probably served as sources of further spread. Gnathotrichus materiarius spread eastward to the Czech Republic and other countries in Central Europe from Germany and Poland and spread northward from Italy to Slovenia. The presence of wilting spruces, outbreaks dominated by Ips typographus Linnaeus, 1758, and the subsequent transport of timber have probably accelerated the spread of G. materiarius. It is possible that G. materiarius was imported with timber to Austria, the Czech Republic, and Poland. Although G. materiarius has been present in Europe for almost 100 yr, and even though its host trees include Picea and Pinus spp., which are abundant in Central European forests, no significant damage caused by this beetle has been detected or reported. Gnathotrichus materiarius is a typical secondary pest in that it multiplies on decaying trees or trees already infested and killed by other bark beetle species. It has 2 generations a year in Central Europe. The beetles of G. materiarius occur the whole year, but the flight of adults starts in early May and the offspring beetles emerge in mid-July. The adults of F2 generation overwinter in wood. The best method for monitoring and detecting the presence of G. materiarius is the use of ethanol-baited traps.
Bark beetles from exotic pines, Pinus armandi Franch. and Pinus x Schwerinii Fitschen, in Poland
Biology and ecology of Juniperus phoenicea – J. turbinata – J. canariensis complex II. Genetics, physiology, ecology
This is a review of the literature on genetics, physiology, and ecology, which concerns Juniperus phoenicea, J. turbinata, and J. canariensis, forming together the complex J. phoenicea. Despite the numerous and varied studies, many gaps and deficiences have been identified in these fields. Further research is particularly needed on the genetic diversity and differentiation of all three species across their entire geographic ranges, with special attention on the easternmost localities of J. turbinata. Additional studies on the real photon flux density requirements, transpiration efficiency, water relations, nutrient demands, and mycorrhizal symbiosis for each species and across different locations, depending on the site conditions, would be highly valuable. The phytocoenological characteristics of J. turbinata and J. phoenicea, and their roles in particular phytocoenoses are fairly well recognized. However, data on J. canariensis and J. turbinata on the Arabian Peninsula should be expanded.
Program „Wsparcie dla czasopism naukowych” Czasopismo: „Acta Scientiarum Polonorum Seria Silvarum Colendarum Ratio et Industria Lignaria”
Ground Beetles (Coleoptera, Carabidae) of the Karkonosze National Park - current state of knowledge and needs for further research
Synthesis of Current Knowledge of the Morphology of the Larval Stages of Paederinae (Coleoptera; Staphylinidae), with a First Insight into the Mature Larva of Pseudomedon Mulsant & Rey, 1878, in the Light of a New Systematic Division
This is the first morphological description of the mature larva (L2) of the genus Pseudomedon, belonging to the tribe Lathrobiini and subtribe Medonina. Detailed illustrations of its structural features are provided. Based on earlier published and new data, 10 and 18 diagnostic larval morphological characters for Paederinae and Pseudomedon, respectively, are proposed. In the light of the new tribal system established for the subfamily Paederinae and based on the current knowledge (including Pseudomedon) concerning the larval morphology of these staphylinids, a comparative analysis of the traits at different taxonomic levels was carried out: intertribal—between Lathrobiini and Paederini sensu nov., intersubtribal (Lathrobiini)—between Medonina and Lathrobiina, and intrasubtribal for Medonina. As a consequence, 12 intertribal, 2 intersubtribal and 3 intrasubtribal distinguishing features were selected. These features, appearing on the head, antennae and mouthparts of the larvae, confirm the validity of the recent proposals to alter the systematics of these staphylinids at higher taxonomic levels. Our proposed practical identification key to Paederinae larvae at the generic level is a synthesis of the current knowledge of Paederinae larvae, including new data. The work also gives a thorough review of the literature and the state of knowledge of the morphology of Paederinae larvae.
Competing or commensal species? On the occurrence of bark beetles in upper montane coniferous forests in Central Europe
New Species of Bark Beetles in the Fauna of Poland - New Challenges for Forest Protection?
Forestry is one of the sectors particularly affected by the threats posed by changing climatic conditions. This is reflected in the deterioration of the health status of stands due to the synergistic effect of numerous abiotic and biotic factors. Current forest health problems are due to dynamic, negative changes in the forest environment. While the amount of precipitation remains at a similar level, its distribution varies throughout the year and, in particular, the lack of soil moisture during the growing season leads to the weakening of trees, including the main forest-forming species in Poland such as Pinus sylvestris. The weakening of trees, in turn, leads to species of insect pests that were previously considered secondary becoming primary pests, such as Ips acuminatus. It is likely that weakening of trees also favours increased occurrence of parasitic plants such as Viscum album ssp. austriacum or Loranthus europaeus. Infestations of the hemiparasitic, xylem-secreting pine mistletoe are of great interest because they are spreading rapidly throughout Europe. Drought in forests is not only a long-term water shortage, but also a situation in which plant-fungal relationships are disrupted. Reduced water availability leads to a number of negative changes in the soil and the mycobiota that live there, affecting entire ecosystems. The effects of climate change and increased international trade are leading to the spread of pathogenic fungi and other harmful organisms whose range was previously restricted to the south of our continent. Unfavourable abiotic and biotic factors leading to weakening of oak stands in the western part of Poland have resulted in activation of new pests like Mediterranean oak borer. Intensification of transport and shortening of its duration, as well as climatic changes, favour the introduction of various organisms, including bark beetles (Scolytinae). In Poland, cyclic insect outbreaks are one of the most important problems in forest protection. Developing methods to monitor, prevent outbreaks and control the density of insect populations below harmful levels can be a challenge to consider. Finding an innovative system for applying insecticides to control spruce bark beetle could also be an interesting solution, where insects attracted to pheromones die after contact with the insecticide. Contact with the insecticide has a dual effect: either directly when the tree is treated, or when the bark beetle attempts to invade the tree. Opportunities for the use of biostimulants in forestry and is an attractive way to regenerate plants after negative stressors such as frost, drought or damage caused by improper use of pesticides, as well as the negative effects of diseases and pests. It acts indirectly by stimulating leaf, stem and root development and improving nutrient uptake. The effects of chemical treatments on fungal biodiversity in forests should be studied using powerful molecular tools such as NGS.
Notes on distribution and ecology of Phloeotribus caucasicus Reitter, 1891 (Coleoptera, Curculionidae, Scolytinae) in Europe
Bear feeding on carrion – impact of severe damage on decomposition rate and insect succession on carcasses – a case study
Potential European Geographical Distribution of Gnathotrichus materiarius (Fitch, 1858) (Coleoptera: Scolytinae) under Current and Future Climate Conditions
Gnathotrichus materiarius (Fitch, 1858) is an alien ambrosia beetle from North America, that has been spreading across Europe since the 1930s. The species infests coniferous trees, excavating galleries in sapwood. However, to date very few studies have predicted changes in ambrosia beetle habitat suitability under changing climate conditions. To fill that gap in the current knowledge, we used the MaxEnt algorithm to estimate areas potentially suitable for this species in Europe, both under current climate conditions and those forecasted for the years 2050 and 2070. Our analyses showed areas where the species has not been reported, though the climatic conditions are suitable. Models for the forecasted conditions predicted an increase in suitable habitats. Due to the wide range of host trees, the species is likely to spread through the Balkans, the Black Sea and Caucasus region, Baltic countries, the Scandinavian Peninsula, and Ukraine. As a technical pest of coniferous sapwood, it can cause financial losses due to deterioration in quality of timber harvested in such regions. Our results will be helpful for the development of a climate-change-integrated management strategy to mitigate potential adverse effects.
Great capricorn beetle (Cerambyx cerdo Linnaeus, 1758) in the Odra valley - species protection and forest management
Recent invasion and eradication of two members of the Euwallacea fornicatus species complex (Coleoptera: Curculionidae: Scolytinae) from tropical greenhouses in Europe
AbstractAmbrosia beetles of the Euwallacea fornicatus species complex are emerging tree pests with a broad host range including important agricultural crops. Native to Southeast Asia, these species were introduced into various countries, where they cause considerable damage to many tree species. Here we report several outbreaks of E. fornicatus s.l. in Europe. The first individuals were found in 2017 in a palm house of a botanical garden in Poznan (Poland) whereas in 2020 an outbreak was detected in a tropical greenhouse in Merano (Italy). In 2021, two additional outbreaks were detected in two greenhouses in Germany, in Erfurt and Berlin. For both cases in Germany it was possible to trace back the invasion to a distributor of exotic plants in the Netherlands where several infested plants were detected. Molecular analyses show that individuals from Poland and Italy are genetically identical but belong to a different mitochondrial clade than individuals in Germany which are identical to most individuals of two greenhouses in the Netherlands. Moreover, in the two greenhouses in the Netherlands we found beetles that belong to another haplotype of E. fornicatus and two haplotypes of E. perbrevis, a species in the E. fornicatus complex, which has not been previously intercepted in Europe. Our study provides novel insights into the invasion history of E. fornicatus and the eradication measures in Europe. Considering the potential of introduction and establishment of Euwallacea ambrosia beetles, particular attention should be paid to monitor the presence of these pests in tropical greenhouses across Europe.
Scolytus spp. associated with elms with symptoms of Dutch elm disease in Poland and the reproductive potential of Scolytus multistriatus (Marsham, 1802) (Coleoptera, Curculionidae, Scolytinae)
Biology and ecology of the Juniperus phoenicea – J. turbinata – J. canariensis complex I. Taxonomy, structure and distribution
The Juniperus phoenicea complex consists of three taxa: J. phoenicea sensu stricto (s.s.), J. turbinata, and J. canariensis. A review of the literature on the biology of these taxa was conducted, focusing on taxonomy with paleo-data, structure, and geographical distribution to present current knowledge on these topics. Information on ecology, disease, utilization, and conservation will be presented in forthcoming parts of this monograph. Each of the three species included in the J. phoenicea complex is a monoecious or sometimes dioecious, evergreen gymnosperm with scale leaves when adult. The morphological differences between them are minor and mainly quantitative. This enables separation of taxa using a combination of traits. However, genetic features such as isozymes and nuclear microsatellites allow adequate differentiation from each other. Juniperus phoenicea s.s. occurs in the western part of the Mediterranean region, J. turbinata is circum-Mediterranean, while J. canariensis exists only on the Canary Islands, except Lanzarote and Fuerteventura, and on the Madeira archipelago. All species contain volatile oils which are used as traditional remedies for many various human and animal diseases, primarily in African and Asiatic countries. The published information for these topics is reviewed.
