In this study, melliferous plants that the honey bee (Apis mellifera L.) can benefit from among the taxa planted in Düzce University Ornamental and Medicinal Plants Botanical Garden, are presented. ...Among the 451 taxa planted in the botanical garden, those with these characteristics were determined by reviewing studies on the subject. Of the 165 taxa (36.58%) included in the honey plant class; 119 contain both nectar and pollen, 25 contain pollen, 13 contain nectar, 4 contain both pollen and insect secretion (IS) or sweet sap (SS), 2 contain pollen, nectar and IS or SS, 1 contain both nectar and SS, 1 contain only IS. In order to prevent the decrease in pollinator and pollinator insects, whose numbers are decreasing due to global climate change, a "Bee and Insect Hotel" was placed in the botanical garden. For this reason, the majority of the plants selected for planting were chosen from taxa with honey plant properties. The main purpose here is both to pollinate the plants in the botanical garden and to show and explain the effects of insect species on pollination through nature education.
Bu çalışmada Düzce Üniversitesi Süs ve Tıbbi Bitkiler Botanik Bahçesi’ne dikilen taksonlardan bal arısının (Apis mellifera L.) yararlanabileceği ballı bitkiler sunulmuştur. Botanik bahçesine dikimi gerçekleştirilen 451 taksondan bu özelliklere sahip olanlar konuyla ilgili çalışmalar incelenerek belirlenmiştir. Ballı bitki sınıfına giren 165 taksondan (%36,58); 119'u hem nektar hem de polen, 25'i polen, 13'ü nektar, 4'ü hem polen hem de böcek salgısı (BS) veya tatlı özsu (TÖS), 2'si polen, nektar ve BS veya TÖS, 1'i hem nektar hem de TÖS, 1’i yalnızca BS içerir. Küresel iklim değişikliği nedeniyle sayıları azalan polen ve polen taşıyıcı böceklerin azalmasını önlemek amacıyla botanik bahçesine bir "Arı ve Böcek Oteli" yerleştirildi. Bu nedenle dikim için seçilen bitkilerin büyük çoğunluğu ballı bitki özelliği taşıyan taksonlardan seçildi. Buradaki temel amaç hem botanik bahçesindeki bitkilerin tozlaşmasını sağlamak hem de böcek türlerinin tozlaşma üzerindeki etkilerini doğa eğitimi yoluyla göstermek ve anlatmaktır.
Melittobia acasta (Walker, 1839) is reported for the first time in Norway. The species is known for its extreme sexual dimorphism and for parasitizing various hymenopterans in bee nesting sites. ...Comments on biology and distribution for the species are given.
Conservation biological control (CBC) is a promising tool for ecological intensification that aims to establish resilient natural enemy populations that contribute to pest management with reduced use ...of pesticides and at the same time support native biodiversity in agroecosystems. Yet the impact of natural enemies in CBC is often limited due to missing resources such as food, habitat, and hibernation shelters. Here, we studied a CBC strategy that incorporates these essential resources combined with semiochemicals, focusing on how the common green lacewing can enhance biological control of aphids.
In a 4-year field study conducted at three locations in the region of East Norway, we developed a CBC strategy combining the three measures ATTRACT (a ternary attractant that increase lacewing egg laying), FOOD (floral buffer strips), and SHELTER (insect hotels for overwintering survival) to increase aphid biological control in spring barley. We recorded the number of lacewings, ladybirds, hoverflies, parasitized aphid mummies, and the two cereal aphid species Sitobion avenae and Rhopalosiphum padi. Our CBC strategy resulted in a significant increase in lacewing activity and significant aphid suppression. At all three locations and over the 4-year period, aphid infestation was below the economic damage threshold in the field plots using CBC measures. In contrast, during two of the years, the density of the aphid infestation in the control plots was significantly above the damage threshold. We found evidence that use of the ternary attractant supported green lacewings but led to loss of ladybirds, hoverflies, and parasitoids, even though flower strips were used as alternative resources.
Our study shows a promising increase in lacewing activity in the agricultural landscape and high biological control of aphids in barley. Long-term field studies are needed to evaluate the impact on non-target species and the agroecosystem before practical application of this approach can be considered.
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