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Monitoring bee health in European agroecosystems using wing morphology and fat bodies
Current global change substantially threatens pollinators, which directly impacts the
pollination services underpinning the stability, structure and functioning of ecosystems.
Amongst these threats, many synergistic drivers, such as habitat destruction and
fragmentation, increasing use of agrochemicals, decreasing resource diversity, as well as
climate change, are known to affect wild and managed bees. Therefore, reliable indicators
for pollinator sensitivity to such threats are needed. Biological traits, such as phenotype
(e.g. shape, size and asymmetry) and storage reserves (e.g. fat body size), are important
pollinator traits linked to reproductive success, immunity, resilience and foraging efficiency
and, therefore, could serve as valuable markers of bee health and pollination service
potential.
This data paper contains an extensive dataset of wing morphology and fat body content for
the European honeybee (Apis mellifera) and the buff-tailed bumblebee (Bombus terrestris)
sampled at 128 sites across eight European countries in landscape gradients dominated
by two major bee-pollinated crops (apple and oilseed rape), before and after focal crop
bloom and potential pesticide exposure. The dataset also includes environmental metrics
of each sampling site, namely landscape structure and pesticide use. The data offer the
opportunity to test whether variation in the phenotype and fat bodies of bees is structured
by environmental factors and drivers of global change. Overall, the dataset provides
valuable information to identify which environmental threats predominantly contribute to the
modification of these traits
Early and mid-term results of application unipolar radiofrequency ablation Unipolar radyofrekans ablasyon uygulamasinin erken ve orta dönem sonuçlari
Objective: The aim of this study is to investigate the effectiveness of unipolar radiofrequency ablation in patients in whom valve replacement was performed for persistent atrial fibrillation. Material and Methods: In our study 22 patients were included which had concomitant mitral valve replacement and left atrial ablation between January 2010-January 2012. Mid-term control and postoperative electrocardiography records of the patients were evaluated retrospectively. In addition, the effects of cardiac function on postoperative AF were investigated. Results: After cardiopulmonary bypass, 14 (63.6%) patients maintained normal sinus rhythm, including one patient with the support of a temporary pace among 8 (36.3%) patients observed in the intensive care unit after replacement. In the early period, one patient died due to low flow, and prolonged intubation. At the end of the first month, 15 (71.4%) patients were in sinus rhythm, 6 patients (28.6%) had persistent atrial fibrillation. By the tenth postoperative month permanent pace maker was implanted to a patient with persistent atrial fibrillation. At the end of 6 th month he had no atrial fibrillation. Conclusion: The success achieved with the unipolar radiofrequency left atrial ablation was found to be consistent with the findings of the literature. In our study, patient age and pulmonary hypertension was evaluated as predictive of ongoing postoperative AF