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Large carnivores such as the lion are declining across Africa, in part because their large herbivore prey is declining. There is consensus that increased protection from prey depletion will be necessary to reverse the decline of lion populations, but few studies have tested whether increased protection is sufficient to reverse the decline, particularly in the large, open ecosystems where most lions remain. Here, we used an integrated population model to test whether lion demography and population dynamics were measurably improved by increased protection. We used data from monitoring of 358 individuals from 2013 to 2021 in the Greater Kafue Ecosystem, where prior research showed that lions were strongly limited by prey depletion, but protection increased in several well‐defined areas beginning in 2018. In some other areas, protection decreased. In areas with high protection, lion fecundity was 29% higher, and mean annual apparent survival (φ) was 8.3% higher (with a minimum difference of 6.0% for prime‐aged adult females and a maximum difference of 11.9% for sub‐adult males). These demographic benefits combined to produce likely population growth in areas with high protection (λ̂$$ \hat{\lambda} $$ = 1.085, 90% CI = 0.97, 1.21), despite likely population decline in areas with low protection (λ̂$$ \hat{\lambda} $$ = 0.970, 90% CI = 0.88, 1.07). For the ecosystem as a whole, population size remained relatively constant at a moderate density of 3.74 (±0.49 SD) to 4.13 (±0.52 SD) lions/100 km2. With the growth observed in areas with high protection, the expected doubling time was 10 years. Despite this, recovery at the scale of the entire ecosystem is likely to be slow without increased protection; the current growth rate would require 50 years to double. Our results demonstrate that increased protection is likely to improve the reproduction and population growth rate of lions at a large scale within an unfenced ecosystem that has been greatly affected by poaching. [ABSTRACT FROM AUTHOR]

This paper analyzes the elusive appearance of Avalokiteśvara Bodhisattva's Hou mount. It examines the unexplored rules for portraying Hou and resolves confused identities between Mañjuśrī and Avalokiteśvara in late Ming and Qing Buddhist art. In earlier history, Avalokiteśvara, Mañjuśrī, and Kṣitigarbha all had lion companions. As the Avalokiteśvara belief became extremely popular in the late Ming, her central position in the Three Great Beings (Avalokiteśvara, Mañjuśrī, and Samantabhadra) triad was accentuated, and her mount needed to be superior to a lion. Artists resorted to features of the mythical animals in the court officials' rank badge system to create Hou. When features such as hoofs, horns, scales, and barbels appear on a lion, viewers can tell that the quadruped is Hou. Artists also applied these rules when creating Kṣitigarbha's companion, Diting. However, Kṣitigarbha's unique iconographic traits enable viewers to recognize him without hesitation. [ABSTRACT FROM AUTHOR]

Abstract The lion (Panthera leo) was extirpated from the Cape region of South Africa during the mid-nineteenth century. Whilst historically classified as a distinct subspecies known as the Cape lion (P. l. melanochaita), recent molecular studies challenge the distinctiveness of this population, suggesting that it represents the southernmost population of the species' Southern Clade. The Cape lion is often cited as having a distinctive skull morphology, which has justified its subspecific classification, but only a limited number of specimens have been available for examination, so that the Cape lion’s skull morphology has not been satisfactorily understood. In this study we collected morphometric data from a greatly enlarged sample of 22 Cape lion skulls, including 12 adults, constituting the largest sample size analysed for this possible subspecies. The results suggest that (1) morphological characteristics of the skull previously thought to distinguish the Cape lion are not diagnostic, and (2) nor is the skull morphology of male and female Cape lions distinct from that of males and females of other southern African lions. Our results independently support those based on molecular investigations, which suggest that the Cape lion was not distinct from other lions within the Southern Clade.

The lion (Panthera leo) was extirpated from the Cape region of South Africa during the mid-nineteenth century. Whilst historically classified as a distinct subspecies known as the Cape lion (P. l. melanochaita), recent molecular studies challenge the distinctiveness of this population, suggesting that it represents the southernmost population of the species' Southern Clade. The Cape lion is often cited as having a distinctive skull morphology, which has justified its subspecific classification, but only a limited number of specimens have been available for examination, so that the Cape lion's skull morphology has not been satisfactorily understood. In this study we collected morphometric data from a greatly enlarged sample of 22 Cape lion skulls, including 12 adults, constituting the largest sample size analysed for this possible subspecies. The results suggest that (1) morphological characteristics of the skull previously thought to distinguish the Cape lion are not diagnostic, and (2) nor is the skull morphology of male and female Cape lions distinct from that of males and females of other southern African lions. Our results independently support those based on molecular investigations, which suggest that the Cape lion was not distinct from other lions within the Southern Clade. [ABSTRACT FROM AUTHOR]

The left and right lungs extend from the second rib to the 13th, while only a small portion is present cranial to the 4th rib. The basal border of the left lung extends horizontally from the second costochondral junction (CCJ) to just ventral to the seventh CCJ, and then dorso‐caudally to the angle of the 13th rib. The right lung has a similar configuration except for the basal border, which is located above the fifth to the sixth CCJ. The cardiac incisure is more prominent in the right lung and is formed by the notched space between the ventral margins of the cranial and middle lobes. The lungs are well‐lobated, with complete fissures laterally but none medially. The trachea and primary bronchi are large and have a wide, thin membranous part. The muscular front limbs could limit cranial thoracic expansion, with the result that the bulk of the functional lung capacity is present caudal to the tricipital line. Recommended sites for intracardiac injections are on either side of the fifth CCJ, and for thoracocentesis, just dorsal to the seventh or eighth CCJ. Care is needed while intubating a lion's trachea because of the delicate membranous part. [ABSTRACT FROM AUTHOR]

Among factors that threaten wild populations of African megafauna, wildlife trade has gained prominence as a global policy issue, with concerted international campaigns aiming to influence the trade of species such as elephants, rhinos and lions. Trade policy is strongly contested, confounding attempts to develop coherent approaches across jurisdictions and through international mechanisms such as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). This undermines conservation efforts. Understanding the drivers of such conflict may help to address this problem.Scholars of political science increasingly recognise the power of ideas as drivers within policy processes. Guided by this literature, we developed an analytical framework and conducted a thematic analysis to examine the ideas driving wildlife trade policy conflict. Our nested case study approach examined debates over trade policy toward African elephants, rhinos and lions at two levels: the international policy arena of CITES and within a single country, South Africa. Informed by earlier literature, we tracked the evolution of international trade policy debates over a 4‐year period (2016–2019) and analysed submissions to a national policy review process in South Africa that took place during 2020.During the study period, state and non‐state actors contributed to vigorous trade policy debates within seven key thematic issues across the case study species. Arguments were driven by both cognitive ideas, which specify cause‐and‐effect relationships, and normative ideas, which are values‐based and especially salient elements of anti‐trade stances.Fusing these cognitive and normative ideational elements, we identified three distinct overarching narratives relating to wildlife trade policy. These three narratives align with broader environmental policy and political narratives and elucidate inherent tensions within the CITES arena. They also reveal differing ethical interpretations and perceptions of risk and precaution.Policy implications. Wildlife trade policy conflict is driven at least in part by competing ideological visions, which may be entrenched by the CITES Appendix listing system. The structural role of CITES in perpetuating this polarisation—and the consequences thereof—warrants further research. Read the free Plain Language Summary for this article on the Journal blog. Read the free Plain Language Summary for this article on the Journal blog. [ABSTRACT FROM AUTHOR]

Large carnivores play a crucial role in their native ecosystems, but their populations are rapidly declining across the African continent. West Africa is no exception, with large protected areas often forming the last strongholds for these species. Little is known about the population status and ecology of large carnivores in the region, hampering the design and implementation of effective conservation strategies. We conducted a camera-trap survey during the dry season in Niokolo-Koba National Park, the largest terrestrial protected area in Senegal and the second largest in West Africa, to investigate the spatio-temporal ecology of the four large carnivores inhabiting the Park: the spotted hyaena Crocuta crocuta , leopard Panthera pardus , West African lion Panthera leo leo and African wild dog Lycaon pictus. Spotted hyaenas and leopards had the widest spatial distribution and highest probability of site use. Spotted hyaena site use was positively associated with leopard relative abundance index and negatively associated with normalized difference vegetation index, whereas only distance to the nearest road influenced leopard site use. Distance to the Gambian River was the most important covariate positively affecting site use by lions. African wild dog site use was negatively associated with the relative abundance indices of lions and leopards. Lions, spotted hyaenas and leopards showed strong overlap in their activity patterns. By providing new information on the ecology of large carnivores in West Africa, including where they range and which habitats are critical for their survival, our study will facilitate conservation planning. Our findings lay the foundations for future research to conserve these threatened species in West Africa effectively and to guide ranger patrol efforts, which are key for their long-term survival. [ABSTRACT FROM AUTHOR]

Current theory predicts that plains zebra (Equus quagga) populations should be resource‐limited. Long‐term, detailed work in the Hwange ecosystem (Zimbabwe) on zebras and all their major predators provides empirical data to test this on a population that has been at a low density for at least 2 decades and is largely naturally regulated. Information on body condition is used as an indicator of resource use, and offtakes by the three major predators are estimated from a synthesis of data on densities and diets. This information leads to rejection of the expectations for resource limitation. Zebras provide a significant part of the diets of all the main predators and are important (11%) for the most abundant of these, spotted hyaenas (Crocuta crocuta). Using conservative values, we calculate that the three main predators, hyaenas, lions (Panthera leo), and leopards (Panthera pardus), kill some 17.5% of the zebra population. Given that this estimated offtake is of the same order of magnitude as maximum population growth (22.3% per year), we conclude that this population is likely to be limited by predation. Further work is needed to better understand the mechanisms by which the greater susceptibility of juveniles to predation in ungulates contributes to population limitation. [ABSTRACT FROM AUTHOR]

There is limited published data regarding cardiovascular disease in nondomestic felid populations. To address this knowledge gap, necropsy cases of tigers and lions with representative myocardial samples submitted to a diagnostic laboratory were histologically assessed with hematoxylin and eosin and Sirius red stains. A total of 32 submissions (15 tigers, 17 lions) were identified in a 4-year period. All tigers and lions had some degree of coronary artery lesions in the left ventricle and/or interventricular septum. Major findings included moderate to marked arteriosclerosis in 8 tigers (53%) and 4 lions (24%) and moderate to marked perivascular fibrosis in 10 tigers (67%) and 9 lions (53%). Moreover, 10 tigers (67%) and 8 lions (47%) had coronary artery lesions with variable degrees of perivascular cardiomyocyte degeneration and/or loss. To our knowledge, this is the first report describing coronary artery pathology in captive tigers and lions. [ABSTRACT FROM AUTHOR]

Laparoscopic ovariectomy under general anesthesia was planned in a 10-year-old, 146 kg, apparently healthy female African lion (Panthera leo). The lion was immobilized via intramuscular darts containing midazolam (0.033 mg/kg), medetomidine (50 µg/kg) and ketamine (2.5 mg/kg), and intubated using an endotracheal tube (16 mm internal diameter). The anesthesia was maintained using sevoflurane (0.9-2.1% end-tidal concentration), in combination with remifentanil (0.1 µg/kg/min) and ketamine (11 µg/kg/min) at a constant rate infusion (CRI), with Hartmann's solution (5 mL/kg/hr). Surgery was conducted with stable vital signs, but hypotension (mean arterial blood pressure 55 mmHg) developed, requiring dobutamine treatment. The hypotension was effectively controlled by adjusting dobutamine from 5 µg/kg/min to 0.2 to 0.3 µg/kg/min. This case suggests possibilities that dosages in this range can be clinically useful for peri-anesthetic hypotension in lions. [ABSTRACT FROM AUTHOR]

This analysis investigated the representation of characters in the cinematic work “Lion.” Used various kinds of politeness strategies. This study aims to analyze the positive and negative politeness strategies used by characters from Australia and India, in addition to determine the factors that shape these strategies. This study applies a qualitative approach. As a result, the conversations in the movie are carefully transcribed and analyzed descriptively through the perspective of politeness theory (Brown, 2020) and s cross-cultural pragmatics (Wierzbicka, 2009) to identify the influence of the characters' cultural backgrounds on their strategic communication choices. The conversations that occur between the Australian and Indian characters in the film serve as a valuable repository of information, that includes both positive and negative politeness strategies. To obtain the data, the researcher uses a few processes, including watching the movie, taking notes, and choosing conversations in which the actors use both positive and negative politeness strategies frequently. The findings of this study reveal that a total of 121 sentences were classified as either negative or positive politeness, with 68 instances identified as negative politeness and 53 as positive politeness strategies. The application of both negative and positive politeness strategies articulated by the characters is primarily influenced by their cultural context.

Abstract Large carnivores such as the lion are declining across Africa, in part because their large herbivore prey is declining. There is consensus that increased protection from prey depletion will be necessary to reverse the decline of lion populations, but few studies have tested whether increased protection is sufficient to reverse the decline, particularly in the large, open ecosystems where most lions remain. Here, we used an integrated population model to test whether lion demography and population dynamics were measurably improved by increased protection. We used data from monitoring of 358 individuals from 2013 to 2021 in the Greater Kafue Ecosystem, where prior research showed that lions were strongly limited by prey depletion, but protection increased in several well‐defined areas beginning in 2018. In some other areas, protection decreased. In areas with high protection, lion fecundity was 29% higher, and mean annual apparent survival (φ) was 8.3% higher (with a minimum difference of 6.0% for prime‐aged adult females and a maximum difference of 11.9% for sub‐adult males). These demographic benefits combined to produce likely population growth in areas with high protection (λ̂ = 1.085, 90% CI = 0.97, 1.21), despite likely population decline in areas with low protection (λ̂ = 0.970, 90% CI = 0.88, 1.07). For the ecosystem as a whole, population size remained relatively constant at a moderate density of 3.74 (±0.49 SD) to 4.13 (±0.52 SD) lions/100 km2. With the growth observed in areas with high protection, the expected doubling time was 10 years. Despite this, recovery at the scale of the entire ecosystem is likely to be slow without increased protection; the current growth rate would require 50 years to double. Our results demonstrate that increased protection is likely to improve the reproduction and population growth rate of lions at a large scale within an unfenced ecosystem that has been greatly affected by poaching.

There have been reports of the transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from humans to various mammalian species. Some infected animals show clinical signs and may even die in rare cases. Outbreaks of SARS-CoV-2 have been reported in zoos where susceptible animals are bred in high population densities. However, there have been few reports of omicron variant outbreaks in zoo animals. From late 2022 to 2023, an outbreak of the SARS-CoV-2 omicron variant occurred in one Japanese zoo. A total of 24 lions were housed in the zoo; 13 of them showed respiratory symptoms, and the three oldest lions died. Molecular and histopathological analyses revealed that the deceased lions were infected with SARS-CoV-2 omicron BF.7.15. Virus-neutralization tests showed that all 21 lions were positive for antibodies against the omicron variant, but not against the delta variant. In addition, three tigers and one bear in the same or neighboring building as the lions possessed antibodies against the omicron variant. This is a very rare report on the outbreak of a SARS-CoV-2 omicron variant infection that resulted in the death of animals. This finding demonstrates the importance of continuous countermeasures to protect non-vaccinated animals from SARS-CoV-2 infection.

Lions and their prey are threatened across most of their range and especially in West and Central Africa. Prey availability influences carnivore densities, social structure, prey preference and home ranges, and changes in prey are important for carnivore management. Scarcity of large prey in many West and Central African ecosystems has been described as leading to a preference for hunting smaller prey in smaller groups. Here we investigated the changes in prey selection of lions in Zakouma National Park (Chad), a protected area in Central Africa that showed significant recovery in wildlife numbers, by collecting feeding data through observations of lions on kills during monitoring drives and GPS cluster points of lion collars. Compared to similar data collected prior to this significant recovery, lions preferred larger prey and fed in larger groups. Our results show that diet shifts due to prey losses can be reversed with restoration of prey populations thanks to improved management, and we speculate that this may be true across large carnivores and across regions. [ABSTRACT FROM AUTHOR]

Importance: Canine extraction of large carnivores can pose significant risk due to extensive tissue damage during aggressive bone reduction. This report highlights a rare instance in which the use of a piezoelectric surgical unit (PSU) for maxillary canine extraction in a large carnivore resulted in successful outcomes with minimal tissue damage. Case presentation: A 10-year-old male African lion presented with decreased appetite because of bilateral maxillary canine fractures. Intraoral radiographs revealed enlarged root canals and periapical radiolucency of the fractured canines, leading to a diagnosis of periapical periodontitis and pulpitis. To extract the right maxillary canine, conventional method using hand instrument failed to achieve adequate luxation, necessitating the use of the flat blade of the PSU to sever the periodontal ligament. The left maxillary canine was extracted using PSU from the beginning, and the extraction time was markedly shortened by using PSU without additional alveolar bone damage or bleeding. Conclusion and Relevance: This case demonstrated that utilizing PSU for canine extraction in a lion resulted in periodontal ligament separation, reducing damage to the alveolar bone and shortening surgical time. It suggests the promising application of PSU in tooth extraction for large wild animals, indicating its potential significance in veterinary dentistry. [ABSTRACT FROM AUTHOR]

Between September and November 2021, 5 snow leopards (Panthera uncia) and 1 lion (Panthera leo) were naturally infected with severe acute respiratory coronavirus 2 (SARS-CoV-2) and developed progressive respiratory disease that resulted in death. Severe acute respiratory syndrome coronavirus 2 sequencing identified the delta variant in all cases sequenced, which was the predominant human variant at that time. The time between initial clinical signs and death ranged from 3 to 45 days. Gross lesions in all 6 cats included nasal turbinate hyperemia with purulent discharge and marked pulmonary edema. Ulcerative tracheitis and bronchitis were noted in 4 cases. Histologically, there was necrotizing and ulcerative rhinotracheitis and bronchitis with fibrinocellular exudates and fibrinosuppurative to pyogranulomatous bronchopneumonia. The 4 cats that survived longer than 8 days had fungal abscesses. Concurrent bacteria were noted in 4 cases, including those with more acute disease courses. Severe acute respiratory syndrome coronavirus 2 was detected by in situ hybridization using probes against SARS-CoV-2 spike and nucleocapsid genes and by immunohistochemistry. Viral nucleic acid and protein were variably localized to mucosal and glandular epithelial cells, pneumocytes, macrophages, and fibrinocellular debris. Based on established criteria, SARS-CoV-2 was considered a contributing cause of death in all 6 cats. While mild clinical infections are more common, these findings suggest that some SARS-CoV-2 variants may cause more severe disease and that snow leopards may be more severely affected than other felids. [ABSTRACT FROM AUTHOR]

Çeşitli hayvanları tasvir etme geleneği Paleolitik Çağ’da başlayıp çağlar boyunca devam etmiştir. Kültürel sürekliliğe işaret eden bu durum çerçevesinde birçok toplumda ya hayvanlar kutsal kabul edilmiş ya da bazı yerlerde onlara tapınılmıştır. Tapınılan hayvanlar arasında özellikle leopar, aslan, boğa ve geyik tanrıçanın zoomorf tasvirleri olarak karşımıza çıkmaktadır. Tanrıçalarla ilişkili olarak betimlenen bu hayvanlar, dinsel ve mitolojik özellikleri ile dikkat çekmektedir. Neolitik Çağ’da genellikle benekli postu ile betimlenen leopar benekleri muhtemelen doğumla ilgili bir konuya işaret etmektedir. Nitekim Boğazköy’de bulunmuş metinlerden leoparın, Tanrıça Teteşhapi ve Güneş Tanrıçası ile yakın ilişki içinde olduğu anlaşılmaktadır. Anadolu’da genellikle koruyuculuğu simgeleyen ve sık sık tasvir edilen aslan ise Çatalhöyük’ten leopar benzeriyle başlayarak tanrıçayla özdeşleşen en güçlü hayvandır. Kedigillerin tanrıça ve kadın ile ilişkilendirilmesi süreklilik arz etmektedir. Öyle ki bu süreklilik siyah kedili cadı geleneğiyle günümüze kadar gelmiştir. Üreme, çoğalmayı sembolize eden boğa ve büyüsel bir amacı olduğu düşünülen geyik de Paleolitik Çağ’dan itibaren kutsal bir varlık olarak düşünülmektedir. Ayrıca Paleolitik Çağ mağaralarında ana tema olarak işlenen boynuzlu hayvan kompozisyonlarının sık sık resmedilmesi, bundan sonraki çağlarda -Neolitik, Kalkolitik, Tunç Çağı ve devamında- tarih sahnesine yerleşen bir köklü inanışın habercisidir. Dolayısıyla boğa/inek ve geyiğin mağara duvarlarında başlayan sanatsal serüveni yüzyıllar boyunca devam etmiştir.

Brugia malayi and B. pahangi, potential zoonotic pathogens transmitted by mosquitoes, are believed to primarily infect dogs and cats as reservoir hosts. Although previous studies have indicated nematode infections in lions, particularly in zoo environments where human contact with these reservoirs is possible, limited documentation exists regarding Brugia sp. infections in lions in Thailand. This study aims to investigate a case of Brugia infection in a lion from a zoo in Thailand. The blood sample was collected and examined from a female lion, using staining methods to morphologically identify microfilaria at the genus level. Subsequently, the PCR was employed targeting specific genes, including mitochondrial 12S rDNA, 18S rDNA, cytochrome oxidase I (COI) and Wolbachia surface protein (wsp), to confirm the species of the filarial nematode parasite. The genetic sequencing results revealed a high similarity (99-100%) to B. malayi for the 12S rDNA, 18S rDNA, COI and wsp genes. Phylogenetic analysis based on nucleotide sequences from the 12S rDNA, 18S rDNA, COI and wsp genes showed that the sequences from this study belong to different clusters. This marks the inaugural documentation of molecular identification of Brugia infection in a lion, signifying that lions could function as reservoirs for this parasite and present a potential public health risk in the region. Our research underscores the effectiveness of molecular techniques and phylogenetic analysis in discerning and comprehending the evolution of filarial parasites. Additionally, it emphasizes the significance of these methods in enhancing the diagnosis, control, and prevention of zoonotic filarial nematode infections. [ABSTRACT FROM AUTHOR]

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Neoplasms in wild felids are more frequently observed in captive animals, of which clinicopathological features of pulmonary tumors are not commonly described. This study aimed to describe the clinical and pathological aspects of a case of diffuse pulmonary acinar adenocarcinoma in a 23-year-old, captive lioness with clinical history of dyspnea, progressive weight loss and inappetence. At necropsy, the lungs were mildly pale, moderately firm, and the pleural surface was diffusely irregular with multifocal to coalescent, grey to white areas. No masses or superficial nodules were detected, but, on the cut surface, there were numerous, spherical, firm, white to yellow areas up to 0.5 cm in diameter affecting all pulmonary lobes. Histologically, in the lungs, there were extensive, non-delineated areas of neoplastic proliferation of columnar, ciliated epithelial cells arranged in irregular tubuloacinar structures. Immunohistochemical analysis revealed immunolabeling of neoplastic cells for pan-cytokeratin and thyroid transcription factor-1. Napsin-A exhibited only scarce and scattered immunolabeling in the neoplastic cells. The gross, histologic and immunohistochemical findings confirmed the final diagnosis of primary diffuse pulmonary adenocarcinoma. [ABSTRACT FROM AUTHOR]

Despite previous concerns regarding the survival of Asiatic Lions confined to the Gir Protected Area, their dispersal into surrounding landscapes has become a subject of considerable research and discussion. This study employs species distribution modeling, corridor analysis, and additional landscape assessment using satellite-based temperatures and Land Cover statistics to investigate this dispersal and identify potential corridors based on extensive field data. The results reveal the identification of a potential corridor from Gir Wildlife Sanctuary towards Velavadar Blackbuck National Park, indicating the expansion of the Asiatic Lion's range in the Eastern Greater Gir Landscape. These findings highlight the significance of resilience in Lion dispersal and corridor expansion, with implications for conservation and potential regional benefits, including ecosystem services and eco-tourism for sustainable development of the region. [ABSTRACT FROM AUTHOR]

Abstract Lions and their prey are threatened across most of their range and especially in West and Central Africa. Prey availability influences carnivore densities, social structure, prey preference and home ranges, and changes in prey are important for carnivore management. Scarcity of large prey in many West and Central African ecosystems has been described as leading to a preference for hunting smaller prey in smaller groups. Here we investigated the changes in prey selection of lions in Zakouma National Park (Chad), a protected area in Central Africa that showed significant recovery in wildlife numbers, by collecting feeding data through observations of lions on kills during monitoring drives and GPS cluster points of lion collars. Compared to similar data collected prior to this significant recovery, lions preferred larger prey and fed in larger groups. Our results show that diet shifts due to prey losses can be reversed with restoration of prey populations thanks to improved management, and we speculate that this may be true across large carnivores and across regions.

To address the problems of complex environment, limited device computational resources and limited memory resources in the existing IoT, SELSTM, an intrusion detection system composed of NSENet and LSTM fusion based on SENet, is investigated. The NSENet part of the SELSTM system is based on the squeeze-and-excitation network (SENet). The lightweight computational modules NonLocal, SKConv and inverted residuals are fused into SE blocks, and self-attention of Nonlocal is used to improve the local receptive field of feature extraction. The channel attention and spatial attention of each part of the data are strengthened by the use of SKConv To enhance the adaptive convolution ability of the model and ensure the completeness of the information, the properties of the inverted residual structure are used to ensure that the gradient of the model decreases steadily without gradient explosion or disappearance. For the problem of data imbalance, the dataset is randomly resampled using the weight resampling technique to improve the balance of the dataset to ensure that the final detection effect of the model is more effective and generalized, while the data flow is divided into two parts for processing, and the model parameters are optimized using the model gradient optimizer consisting of the optimizer Lion and the optimization function Lookahead. The model extracts the spatial and temporal features of the data through multidimensional extraction to ensure the completeness of the data feature information in multiple dimensions, thus obtaining better detection results. The results of the experiments comparing the SELSTM model with other models on the intrusion dataset show that the intrusion detection model has a higher detection precision and accuracy than the traditional deep learning intrusion detection model, which indicates that the SELSTM has better detection performance properties and better practicality and effectiveness on IoT devices.

With the widespread usage of power electronics and other non-linear loads, the power quality (PQ) issue in the power grid is becoming increasingly prominent, threatening the power system’s stability. As a result, accurate identification and categorization of complicated power quality disturbances (PQD) is a necessity and critical to mitigating grid pollution. In this paper, a new approach for high-precision intelligent recognition of complex PQDs based on improved Kaiser window s-transform (IKST) and convolutional neural network (CNN) (KSTCNN) is proposed. Firstly, KST is applied for PQD time-frequency (TF) signal detection, and then the control function is modified to adjust the shape of the KS-window, and its parameters can be automatically optimized according to the maximum energy concentration to satisfy the various TF signal detection requirements. Then, the CNN architecture is improved using a SimAM attention mechanism that assigns higher weights to the neurons conveying useful PQD feature information and suppresses the surrounding neurons with irrelevant information. Then, an improved hierarchical 2D dense network structure is proposed to achieve the feature extraction and high-precision recognition of PQDs. Then, the results of simulation experiments demonstrate that the classification accuracy of the proposed KSTCNN is better than other compared methods under different noise levels. Finally, in the practical hardware platform, the recognition accuracy of PQDs reaches 97.93, and the real-time detection time is 0.11s, which further verifies the practicality of the KSTCNN and meets the requirement of real-time recognition of complex PQDs.

Visual navigation is the pivotal technology for enabling autonomous operations of orchard robots. To obtain orchard navigation lines, the robot needs to quickly identify the positions of tree trunks. For this, we proposed a detection model called YOLOv8-Trunk in this study. Based on the detection results of vine tree trunks by YOLOv8-Trunk, the network generates a series of center point coordinates at the bottom of the detection boxes. Subsequently, the least square method is employed to fit reference lines on both sides of the trunk, thereby determining the navigation path for the orchard robot. To enhance the focus on the target, an efficient multi-scale attention (EMA) mechanism is introduced into traditional YOLOv8 network. On the data level, we adopted a novel Mix-Shelter method to augment the datasets for training the detection model, thereby bolstering the robustness. In addition, we also explored the impact of loss functions and optimizers on the performance of the detection model. A comprehensive set of ablation and comparison experiments is conducted in this study. The experimental results affirm that the YOLOv8-Trunk network adeptly detects vine tree trunks, achieving an accuracy rate of 92.7%. The obtained navigation path based on the detect result is reliable. This study provides valuable reference for the realization of intelligent inspection in orchards.

Brugia malayi and B. pahangi, potential zoonotic pathogens transmitted by mosquitoes, are believed to primarily infect dogs and cats as reservoir hosts. Although previous studies have indicated nematode infections in lions, particularly in zoo environments where human contact with these reservoirs is possible, limited documentation exists regarding Brugia sp. infections in lions in Thailand. This study aims to investigate a case of Brugia infection in a lion from a zoo in Thailand. The blood sample was collected and examined from a female lion, using staining methods to morphologically identify microfilaria at the genus level. Subsequently, the PCR was employed targeting specific genes, including mitochondrial 12S rDNA, 18S rDNA, cytochrome oxidase I (COI) and Wolbachia surface protein (wsp), to confirm the species of the filarial nematode parasite. The genetic sequencing results revealed a high similarity (99–100%) to B. malayi for the 12S rDNA, 18S rDNA, COI and wsp genes. Phylogenetic analysis based on nucleotide sequences from the 12S rDNA, 18S rDNA, COI and wsp genes showed that the sequences from this study belong to different clusters. This marks the inaugural documentation of molecular identification of Brugia infection in a lion, signifying that lions could function as reservoirs for this parasite and present a potential public health risk in the region. Our research underscores the effectiveness of molecular techniques and phylogenetic analysis in discerning and comprehending the evolution of filarial parasites. Additionally, it emphasizes the significance of these methods in enhancing the diagnosis, control, and prevention of zoonotic filarial nematode infections.

Illegal trade in big cat (Panthera spp.) body parts is a prominent topic in scientific and public discourses concerning wildlife conservation. While illegal trade is generally acknowledged as a threat to big cat species, we suggest that two enabling factors have, to date, been under‐considered. To that end, we discuss the roles of human‐felid conflict, and "local" use in illegal trade in big cat body parts. Drawing examples from across species and regions, we look at generalities, contextual subtleties, ambiguities, and definitional complexities. We caution against underestimating the extent of "local" use of big cats and highlight the potential of conflict killings to supply body parts. [ABSTRACT FROM AUTHOR]

Large carnivore distribution in Ethiopia is not well documented; we did 108 interviews and 12 focus group discussions in six districts of the Somali Region to gather basic information. The Region is not listed as resident range for big cats, but our results indicate widespread presence of cheetah, and possible remnants of lion and leopard occurrence. Spotted and striped hyaena, plus many smaller species, are frequently encountered. In contrast to positive attitudes towards wild grazers, all carnivores are persecuted in response to frequent conflict leading to injuries and deaths among people and livestock. Lion and cheetah cubs were regularly captured and trafficked, and this may have contributed to lion declines especially. Cheetah cubs are still regularly caught and we mapped how they are smuggled to Somalia/Somaliland from where they enter the pet trade. [ABSTRACT FROM AUTHOR]

The history of the lion in Africa is obscure. A giant lion was reported from Natodomeri, a MIS 8–7 site located in East Africa. Initial analysis showed intriguing features of the specimen. However, further analysis on what kind of lion (e.g. modern Panthera leo, Pleistocene Panthera spelaea) has not yet been performed. The purpose of this study is to elucidate the phylogenetic position of the Natodomeri lion through statistical morphometric analysis. To this end, the Natodomeri lion is compared with lions from Pleistocene Eurasia and Holocene Africa. Results show a surprising affinity between the Mauer lion (Panthera spelaea fossilis) and the Natodomeri lion. Such may be indicative of a more recent divergence date between P. leo and P. spelaea. However, if a divergence date between extant P. leo and Eurasian P. spelaea of 1.85 mya is used (based on recent phylogenetic studies), the close affinity between the Mauer and Natodomeri lions suggests that the Natodomeri lion is an African form of early P. spelaea. Under this theory, the Natodomeri lion may have originated through a ‘reverse’ migration of Panthera spelaea fossilis into Africa. [ABSTRACT FROM AUTHOR]

An analytical review of scientific publications containing materials or discussion of the concept of sexually selective infanticide (SSI) in brown bear populations (Ursus arctos) is presented. The authors of the SSI concept refer to the idea of sexual selection, which is a rather shaky conceptual basis. The concept was formed largely on the basis of materials obtained during the study of intraspecific relations in lion populations (Panthera leo). However, facts regarding the behavioral ecology of the lion, which accumulate relatively quickly, can be interpreted quite ambiguously and even only when applied to this species, the concept of this does not look convincing enough and is obviously unnecessarily anthropomorphic. Infanticide, cannibalism, and their combination are recorded in both lion and brown bear populations. However, the behavioral ecology of these species differs significantly. Brown bear populations are characterized by pronounced seasonality of reproduction; the presence of a reproductive interval in bear females, which can vary significantly in populations with different habitat conditions and varies from 1 to 5 years; and mating patterns than can vary from lax monogamy to panmixia. Multiple paternity is possible within the same litter of cubs of a brown bear. It follows from the review that brown bear populations are characterized by many features of sociality, with the lifestyle of bears being both solitary and group. It is hardly correct to classify the brown bear (and other species of bears) as uniquely asocial. From the analysis of publications on the behavioral ecology of the brown bear, it follows that the application of the SSI concept without significant additions is hardly useful for understanding the intraspecific relations of this species. [ABSTRACT FROM AUTHOR]

Abstract Illegal trade in big cat (Panthera spp.) body parts is a prominent topic in scientific and public discourses concerning wildlife conservation. While illegal trade is generally acknowledged as a threat to big cat species, we suggest that two enabling factors have, to date, been under‐considered. To that end, we discuss the roles of human‐felid conflict, and “local” use in illegal trade in big cat body parts. Drawing examples from across species and regions, we look at generalities, contextual subtleties, ambiguities, and definitional complexities. We caution against underestimating the extent of “local” use of big cats and highlight the potential of conflict killings to supply body parts.

Trophy hunting is a contentious practice often associated by the public with charismatic African megafauna, especially lions (Panthera leo). Public pressure could potentially end trophy hunting in the near future, which many stakeholders argue could lead to negative impacts, including on species conservation and on the livelihoods of communities that depend upon it as a source of income. We investigated the potential for replacing revenue currently generated by trophy hunting in South Africa with levies - a “lion protection fee” - on international travellers to that country. Our approach recognised tourism as a source of funds for conservation action, and the influence of lions as a charismatic, flagship species. We surveyed 907 respondents who had previously visited South Africa, or would consider visiting in the future. We used van Westendorp and Gabor-Granger direct pricing methodologies to assess whether the willingness of potential visitors to pay for wildlife protection could be sufficient to compensate for any loss were trophy hunting to be banned. Our findings indicated substantial support for the proposition of being charged a “lion protection fee”: 84.2% of respondents stated that it was a “great” or a “good” idea. A minority (7.5%) had a negative view but only two of these respondents (0.2%) indicated a pro-trophy hunting attitude. Willingness-to-pay was sufficient that, under predicted 2023 numbers of tourists, daily fees could be set at a price acceptable to both overseas ($6–7 USD) and southern African tourists ($3–4 USD), and generate funds at least equalling, but potentially exceeding, those currently generated by trophy hunting ($176.1 million US per annum). We conclude that, in principal, revenue from trophy hunting in South Africa could be fully replaced by a subsidy to stakeholders as a payment for conservation action, funded by a modest levy on international tourist visitors.

Determining the incidence and causes of craniodental damage in wild carnivores is often constrained by limited access to specimens with associated ecological data, such as prey type and abundance. We assessed dental condition and cranial injuries in lion, leopard, and spotted hyena in relation to prey and predator populations in Zambia's Luangwa Valley, where large prey are more abundant and lion and leopard more numerous, and the Greater Kafue Ecosystem, where smaller prey species are more prevalent and lion and leopard less common. In Luangwa, lions had significantly higher rates of tooth fracture, and blunt trauma injuries attributable to prey-handling, compared to Kafue lions. In contrast, leopards in both regions had similar rates of tooth wear and breakage. Overall, lions showed a significantly higher tooth fracture rate than leopards on a per tooth basis. Spotted hyenas had the highest rates of tooth wear and fracture among all three carnivores, and greatly exceeded previously recorded rates based on historical samples. Despite larger numbers of lion and leopard in Luangwa, there was no difference in incidence of intraspecific injuries between regions. These results are consistent with a greater abundance of large prey species, especially buffalo, in the diets of Luangwa lions, and previous work showing a reliance on smaller prey species in Kafue throughout the large carnivore guild.

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African wild dogs utilise a den for ~10–12 weeks after birthing, during which home ranges are contracted and usually in areas away from roads and water sources, with low prey and predator abundances, high terrain ruggedness and vegetation cover. Our study in Savé Valley Conservancy (SVC) investigated which ecological and environmental factors determine the selection of denning areas and behaviours. Camera trap data collected from four den grids and three random den grids were analysed using binomial generalised linear and occupancy models. Denning wild dogs preferred areas with higher kudu and impala presence and areas closer to roads and water sources. Wild dogs may den in areas we perceive as riskier in an attempt to reduce energy expenditure when hunting. The detection of wild dogs strongly decreased with higher lion presence, while increasing with steeper slopes, higher vegetation cover and leopard presence. Given lion habitat preferences, SVC wild dogs could be using areas which reduce their exposure to lions, while solitary leopards do not necessarily pose a risk to wild dog packs. Our study highlights that the denning behaviours of wild dogs may be inconsistent both within and among populations, and that comprehensive research approaches be taken to understand their denning behaviours, assisting the development of appropriate management/conservation strategies. [ABSTRACT FROM AUTHOR]

Wild lions, especially the males, spend much of their time performing various territorial advertising behaviors, the most obvious of which are loud vocalizations that can be heard several kilometers away. This study investigated whether a captive pride of three Asiatic lions at Fota Wildlife Park in Ireland exhibited typical patterns of territorial vocalizations and associated behaviors. A total of 705 bouts of territorial vocalization were noted over 1 month of near‐continuous audio recording in the middle of winter in 2020. Also, complementary visual observations were performed during regular daytime visits to collect audio data and maintain recording equipment. These captive lions exhibited generally similar territorial urine spraying, scent rubbing and vocalization behaviors to their wild counterparts but differed in that they primarily vocalized during daylight hours, including afternoons and late mornings. While most roaring occurred during the day there was also a brief peak just before dawn, between 07:00 and 08:00, and another after dusk, between 17:00 and 18:00. Vocalization activity tailed off after 22:00 and became infrequent over the remaining hours of darkness. Although this contrasts starkly with the predominantly nocturnal activity patterns of wild lions, it is consistent with some reports from some other captive settings. Although the underlying reasons for this habit of roaring throughout the day remain unclear, it is fortuitous because the spectacular territorial vocalizations of these captive lions enrich visitor experiences and may hopefully stimulate interest in travel to the low and middle‐income countries where tourist income is essential to sustain the conservation areas they and many other species depend on. [ABSTRACT FROM AUTHOR]

The two pieces of scratch-engraved glass presented in this article, one with lion and the other with camel imagery, are to date the only examples of animal representations executed in this technique that are known from the archaeological excavation of the Kom el-Dikka site in Alexandria (Egypt). As such, they contribute significantly to the still very small assemblage of scratch-engraved glass with zoomorphic themes from the Islamic world, so far made up of altogether no more than seven fragments, including these two. The shards come from cylindrical cups, a popular form in use in the Early Islamic period, dated to the 8th–9th centuries.

Endotheliochorial cat (Felis catus) and lion (Panthera leo) term placentae and one 6 week placenta (term 60–63 days) from a dog (Canis familiaris) were stained with a panel of 24 lectins to compare glycosylation at the feto-maternal interface. Glycan expression in lion and cat placentae was very similar apart from the occurrence of terminal α-galactose in the lion trophoblast. The dog differed in several respects, particularly in the trophoblast, consistent with species-specific glycotypes differing according to the degree of their evolutionary divergence. The data suggest that evolutionary effects on the glycotype are most readily observed in trophoblast. • Endotheliochorial placental glycosylation in cat, lion and dog was examined with 24 lectins. • Cat and lion glycans were similar apart from terminal α-galactose expression in lion trophoblast. • Glycans in dog placenta differed with respect to several classes of glycan, mainly in trophoblast. • This suggests the presence of a glycocode diverging with evolutionary distance between species. [ABSTRACT FROM AUTHOR]

"You believe animals to be wholly deprived of passions" asks the narrator of Balzac's 1836 story, "A Passion in the Desert," and he adds, "you should know that we can give them all the vices driven by our state of civilization." It is in the context of Balzac's questioning of animal passion that I would like to consider the striking and passionate expressions shared among the lion, dromedary and human figures in Jules Verreaux' "Lion Attacking a Dromedary." The denial of animal passion can be understood as a Cartesian legacy that influenced both taxidermy and the illustrations of early natural histories, but would eventually be questioned during the 18th and 19th centuries. Thus, Buffon accepted that an animal might be excited or moved by passions, but also wrote that any depiction of that agitation could only distort the representation of a species' essence. During the 19th century, by contrast, both scientific and artistic representations of animals show an increasing interest in animal emotions, even as these would underscore a greater affinity between human and non‐human animals, as evidenced by Darwin's 1872 publication of The Expression of the Emotions in Man and Animals. Balzac's story and Verreaux's taxidermy question to what extent passions humanize animals or bestialize humans, a question with potential relevance, I will argue, for understanding how the vices of civilization might relate to the figure of the human Courier in the exchange of passions. [ABSTRACT FROM AUTHOR]