European Journal of Wildlife Research最新文献

{"title":"Thyroxine administration at the end of the rutting season does not affect testosterone secretion or horn growth in the Iberian ibex (Capra pyrenaica)","authors":"Adriana Rodríguez-Luis, Adolfo Toledano-Díaz, Rosario Velázquez, Antonio López-Sebastián, María Mogedas-Moreno, Julián Santiago-Moreno","doi":"10.1007/s10344-024-01795-2","DOIUrl":"https://doi.org/10.1007/s10344-024-01795-2","url":null,"abstract":"<p>Thyroid hormones play a role in the control of seasonal reproduction in wild and domestic ruminants such as red deer and sheep. Horn growth shows an inverse relationship with reproductive activity, but the effect of thyroid function on the regulation of the seasonal pattern of horn growth is unknown. This work examines the seasonal pattern of plasma thyroxine concentration, and its effect on testosterone secretion and seasonal changes in horn growth, in male Iberian ibexes (<i>Capra pyrenaica</i>). Plasma testosterone, plasma thyroxine, and horn growth were measured over a year in four males kept under natural photoperiod conditions. In another four, thyroxine was administered coinciding with the period of physiological reduction in plasma testosterone (January–February). In the first four, seasonal changes in the plasma concentration of thyroxine were detected with the highest concentrations recorded in October, November, and December, coinciding with the greatest testosterone secretion. In the second four, thyroxine treatment affected neither plasma testosterone concentration nor horn growth. The plasma concentrations of testosterone and thyroxine appear to be closely related in the ibex, but the seasonal pattern of horn growth does not seem to be modulated by seasonal changes in thyroxine.</p>","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anticoagulant rodenticides exposure status among wild pit vipers (Protobothrops flavoviridis) and green anoles (Anolis carolinensis) in two Japanese Islands","authors":"Yoshiya Yamamura, Shintaro Nakagawa, Mitsuki Kondo, So Shinya, Rio Doya, Masashi Koide, Yared Beyene Yohannes, Yoshinori Ikenaka, Mayumi Ishizuka, Shouta M. M. Nakayama","doi":"10.1007/s10344-024-01812-4","DOIUrl":"https://doi.org/10.1007/s10344-024-01812-4","url":null,"abstract":"","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140962915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using public-sourced photos to track changes in moose antler size during a 20-year hunting ban","authors":"Rafał Kowalczyk, Natalia Kowalczyk, Piotr Dombrowski, Krzysztof Górecki, Szymon Kolasa, Radosław Miazek, Patryk Sacharewicz, Piotr Tałałaj, Tomasz Borowik","doi":"10.1007/s10344-024-01811-5","DOIUrl":"https://doi.org/10.1007/s10344-024-01811-5","url":null,"abstract":"","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140970418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Status assessment of a recently reintroduced eurasian lynx (Lynx lynx) population in the Palatinate Forest, South-West Germany","authors":"Markus Port, Carolin Tröger, Ulf Hohmann","doi":"10.1007/s10344-024-01800-8","DOIUrl":"https://doi.org/10.1007/s10344-024-01800-8","url":null,"abstract":"","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140973032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expanding the spatial scale in DNA-based monitoring schemes: ascertainment bias in transnational assessments","authors":"Alexander Kopatz, Anita J. Norman, Göran Spong, Mia Valtonen, Ilpo Kojola, Jouni Aspi, Jonas Kindberg, Øystein Flagstad, Oddmund Kleven","doi":"10.1007/s10344-024-01808-0","DOIUrl":"https://doi.org/10.1007/s10344-024-01808-0","url":null,"abstract":"<p>Harmonising methodology between countries is crucial in transborder population monitoring. However, immediate application of alleged, established DNA-based methods across the extended area can entail drawbacks and may lead to biases. Therefore, genetic methods need to be tested across the whole area before being deployed. Around 4,500 brown bears (<i>Ursus arctos</i>) live in Norway, Sweden, and Finland and they are divided into the western (Scandinavian) and eastern (Karelian) population. Both populations have recovered and are connected via asymmetric migration. DNA-based population monitoring in Norway and Sweden uses the same set of genetic markers. With Finland aiming to implement monitoring, we tested the available SNP-panel developed to assess brown bears in Norway and Sweden, on tissue samples from a representative set of 93 legally harvested individuals from Finland. The aim was to test for ascertainment bias and evaluate its suitability for DNA-based transnational-monitoring covering all three countries. We compared results to the performance of microsatellite genotypes of the same individuals in Finland and against SNP-genotypes from individuals sampled in Sweden (<i>N</i> = 95) and Norway (<i>N</i> = 27). In Finland, a higher resolution for individual identification was obtained for SNPs (PI = 1.18E-27) compared to microsatellites (PI = 4.2E-11). Compared to Norway and Sweden, probability of identity of the SNP-panel was slightly higher and expected heterozygosity lower in Finland indicating ascertainment bias. Yet, our evaluation show that the available SNP-panel outperforms the microsatellite panel currently applied in Norway and Sweden. The SNP-panel represents a powerful tool that could aid improving transnational DNA-based monitoring of brown bears across these three countries.</p>","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140931725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic differentiation of wild boar populations in a region affected by African swine fever","authors":"Uta Simon, K Gerhards, S Becker, H Willems, V Friedrichs, JH Forth, S Calvelage, S Blome, Gerald Reiner","doi":"10.1007/s10344-024-01807-1","DOIUrl":"https://doi.org/10.1007/s10344-024-01807-1","url":null,"abstract":"<p>In the European Union, African swine fever (ASF) affects wild boar (<i>Sus scrofa</i>) populations in several Member States. Knowledge of population connectivity is important for the implementation of control measures, in particular the establishment of effective barriers. Population genetic comparisons of neighbouring populations can be very helpful in this respect. The present study investigated the genetic differentiation of wild boar in eastern Germany. This region has been affected by ASF since September 2020. A total of 1,262 wild boars from 31 hunting grounds (populations) in ASF-affected and ASF-free districts were sampled over a total area of almost 100,000 km². The study area encompassed a network of geographical factors that promote (roads, rivers, cities) or inhibit (natural areas, habitat corridors) genetic differentiation between wild boar populations. The genetic differentiation of the areas was based on 12 microsatellite markers. Three different Bayesian algorithms were used to analyse the data. The results were combined into a common approach with 9 clusters. Based on the cluster distribution in each population, the connectivity between the areas was quantified. The strongest differentiation was found along an imaginary line along the lower Elbe valley through Berlin and the A11 freeway to the Szczecin Lagoon. In contrast, the Mecklenburg Lake District and the south-east of the study area showed strong connectivity between areas. The special features of the landscapes along the lower Elbe valley, which was assessed as highly connective, and the high barrier effect of the A11 freeway in contrast to the other freeways in the study area show that barrier effects cannot be generalised in principle, but are actually determined by the circumstances of individual structures. The results of the connectivity analysis were compared with the distribution of viral lineages and variants. The genotypes of the wild boar populations and the ASFV lineages and variants showed a good explanatory approach for the observed disease dynamics in the study area. The newly gained knowledge on barriers and regionally different connectivity between wild boar populations can support considerations and measures for the containment of ASF in the affected areas by improving the understanding of wild boar dispersal dynamics.</p>","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimating kill intervals for a specific prey species using location clusters from GPS-collared Eurasian lynx (Lynx lynx)","authors":"Kristina Vogt, Tobias Roth, Sven Signer, Christian Simon Willisch, Valentin Amrhein","doi":"10.1007/s10344-024-01804-4","DOIUrl":"https://doi.org/10.1007/s10344-024-01804-4","url":null,"abstract":"<p>An increasing number of GPS telemetry studies have helped to gain important insights into predator-prey relationships in recent years. However, considerable time and effort is needed to evaluate whether GPS location clusters (GLCs) reflect predation events. To reduce field effort, predictive models are being developed to calculate predator kill intervals, but few studies have attempted to do this for a specific species of prey. Between 2013 and 2018, we studied predation by 13 GPS-collared Eurasian lynx (<i>Lynx lynx</i>) on Alpine chamois (<i>Rupicapra rupicapra</i>) in the northwestern Swiss Alps. Our objectives were to predict the total number of killed chamois, including potential kills in unchecked GLCs, and to evaluate if model predictions were sufficiently accurate. We built a set of generalized linear models (GLM) predicting the occurrence of GLCs containing lynx-killed chamois (1) versus GLCs containing other prey types or no prey (0) and compared their predictive performance by means of k-fold cross-validation. We found that model performance was very similar for all candidate models, with the full model yielding the best cross-validation result (accuracy = 0.83, sensitivity = 0.43, specificity = 0.94). Female lynx killed on average one chamois every 11.9 days (10.6–13.0 days, 95% CI); male lynx killed one chamois every 7.2 days (6.7–7.6 days, 95% CI). Our model showed high specificity for detecting non-chamois GLCs, but sensitivity for detection of GLCs with actual chamois kills was low. We conclude that the sensitivity of the models should be further improved, but the results can be sufficient for practical application. Predictive modelling approaches do not replace extensive fieldwork but require large sets of field data, high individual variability and thorough knowledge of a predator’s ecology and prey community. Our approach may provide useful results for binary classifications in rather simple predator-prey systems, but extrapolations from one study system to another might be difficult.</p>","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140935353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Camera trapping in Southern Vietnam: unveiling relative abundance, activity patterns, and conservation challenges of globally threatened pangolins and small carnivores","authors":"Russell J. Gray, Tan Van Nguyen, Long Nhat Cao, Mai Thi Trinh, Thong Van Pham, Huyen Thi Thanh Nguyen, Daniel Willcox, Dzung Van Le, Thai Van Nguyen","doi":"10.1007/s10344-024-01809-z","DOIUrl":"https://doi.org/10.1007/s10344-024-01809-z","url":null,"abstract":"<p>The U Minh wetlands of southern Vietnam in Ca Mau and Kieng Giang provinces are a degraded, peat-swamp wetland mosaic known to retain several globally threatened species. We deployed 83 targeted camera-traps across U Minh Thuong National Park and U Minh Ha National Park from December 2019 to May 2020, and from November 2020 to June 2021, respectively. Our aim was to detect threatened otters, wild cats, and pangolins in each protected area, to identify relative abundance, activity patterns, and what potential threats they may face to inform conservation priorities for park managers. Our results showed that both protected areas harbour significant regionally important populations of globally threatened Sunda pangolins (<i>Manis javanica</i>), and Hairy-nosed otters (<i>Lutra sumatrana</i>). However, Fishing cats (<i>Prionailurus viverrinus</i>) and Large-spotted civet (<i>Viverra megaspila</i>) previously recorded from U Minh Thuong National Park, were not observed, emphasising the probability of local extirpation. Other than wide-ranging species that are less sensitive to human disturbance (i.e., Common palm civets and Leopard cats), all small carnivores were most active in <i>Melaleuca</i> and swamp/<i>Melaleuca</i> habitats in U Minh Thuong, and both the wetland plantations and disturbed forests of U Minh Ha according to their photographic rates. Human and domestic dogs’ activity periods in both protected areas overlapped strongly with Hairy-nosed otters, which could influence their dispersal abilities and access to resources. Long-term and short-term threats are discussed with relevance to U Minh ecosystem health and future recommendations.</p>","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140931724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Moving towards an ecological management of overabundant ungulates: insights from wildlife-vehicle collisions and hunting bag data","authors":"Rocío Tarjuelo, Juan José Luque-Larena, François Mougeot","doi":"10.1007/s10344-024-01801-7","DOIUrl":"https://doi.org/10.1007/s10344-024-01801-7","url":null,"abstract":"<p>Increasing abundance of large ungulates is raising human-wildlife impacts and the effectiveness of recreational hunting to reduce their population growth is increasingly questioned. We report on long-term trends (&gt; 15 years) in wildlife-vehicle collisions (WVC) and hunting bags, and on associations between the annual growth rate of WVC and that of hunting bags for three ungulates – the wild boar, the red deer, and the roe deer – and the grey wolf in northwest Spain to evaluate the regulating capacity of recreational hunting at large spatial scale. Wildlife-vehicle collisions increased by 332% in 16 years and 91% of all traffic accidents were caused by collisions with these three ungulates. All ungulate species showed significant positive trends in WVC and hunting bags, but we did not observe a negative association between annual growth rate of hunting bags and that of WVC except for the wild boar. Results suggest that recreational hunting was unable to reduce ungulate population growth at the regional scale. There was no upward trend of vehicle collisions with wolves over the study period, possibly reflecting stable wolf populations. Natural mortality due to predation could be promoted through the protection of apex predators, but the lethal management of apex predators, often based on sociopolitical pressures rather than damage levels, can conflict with the strategy for mitigating ungulate impacts. Ungulate management needs to be reconsidered from an ecological perspective that integrates human management measures, including recreational hunting, based on the population dynamics and the recovery of predator–prey interactions by favoring the expansion of apex predators.</p>","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140935432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Spatio-temporal movements of goat herds in a protected area of Mexico","authors":"L. A. Pérez-Solano, Salvador Mandujano, Zulema Bautista","doi":"10.1007/s10344-024-01805-3","DOIUrl":"https://doi.org/10.1007/s10344-024-01805-3","url":null,"abstract":"","PeriodicalId":51044,"journal":{"name":"European Journal of Wildlife Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141002313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}