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Probiotics in poultry: a comprehensive review 家禽中的益生菌:综合评述
Pub Date : 2024-07-15 DOI: 10.1186/s41936-024-00379-5
Neha Halder, J. Sunder, Arun Kumar De, D. Bhattacharya, S. Joardar
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引用次数: 0
Morphologic and phylogenetic investigations revealed size-divergent clades in chelae morphotypes of freshwater prawn Macrobrachium vollenhovenii Herklots (Decapoda: Palaemonidae) in a lake and river system of Southwest Nigeria 形态学和系统发生学研究揭示了尼日利亚西南部湖泊和河流系统中淡水对虾Macrobrachium vollenhovenii Herklots(十足目:虾科)螯足形态的大小差异支系
Pub Date : 2024-07-06 DOI: 10.1186/s41936-024-00376-8
Oyediran Olusegun. Oyebola, Oluwakayode Michael Coker, Charity Oche, Olumuyiwa Ayodeji Akanmu, Oluwatoyin Alamu, Victor Okechukwu Azuh, Christy Funmilayo Idowu
The freshwater prawn Macrobrachium vollenhovenii is one of the largest Macrobrachium species, a biological agent against human schistosomiasis, and a cheap protein source in riverine communities in West Africa. However, its aquaculture development for sustainable utilization is challenged by cryptic identity amidst the presence of morphotypes of unknown size and genetic relatedness. This study aimed to investigate the maximum sizes and evolutionary links of chelae morphotypes in M. vollenhovenii for precise identification and utilization in a 3 × 2 randomized block experimental design. Ninety biggest encountered samples of M. vollenhovenii chelae morphotypes—those possessing equal left and right side chelae, longer left chelae, and shorter left chelae—were obtained from fisherfolks’ catches at each of Asejire Lake and Ogun River during peak seasons (July–September) bimonthly field survey, representing EAAL, LLAL, SLAL—GAALs, and EAOR, LLOR, SLOR—GAORs. These were analyzed for differences (p < 0.05) in size-linked parameters—length (L (cm)), weight (W (g)), and condition factor (K). Specimens’ 16S rRNA nucleotide sequences were utilized to infer phylogenetic linkages, single-nucleotide polymorphism (SNP), and amino acid translations alongside NCBI references (NCBIrefseq). Weight (W) and condition factor (K), among GAALs, for SLAL and LLAL were similar; EAAL was significantly lowest; among GAORs, SLOR and LLOR were similar; and EAOR was significantly lowest. In GAALs, EAAL, LLAL, and SLAL had higher L, W, and K than counterpart GAORs. Sequences formed two polyphyletic groups: EAOR branch from EAAL, in which 100.0%EA rooted 75.0% NCBIrefseqs, forming a clade; and GAOR-SLOR and LLOR branch form GAOR-LLAL rooted SLAL, in which 100.0%LL and SL rooted KJ463387.1 (Badagry), forming another clade. SNP Locus 91 separated 100.0%GAOR from 100.0%GAAL and 100.0%NCBIrefseqs translating to valine; SNP Locus 171 separated 100.0%EA and its co-rooted NCBIrefseqs from 100.0%LL, SL, and their co-rooted NCBIrefseq, translating to glycine/glutamic acid change. The equal left and right side chelae and the unequal left and right side chelae specimens are, respectively, small- and robust-sized, irrespective of habitat. They are divergent size-linked clades having protein translate differences, delineable at 16S rRNA SNP Locus 171; their size variant habitat strains are delineable at SNP Locus 91. These SNP markers will be useful for precision identification and selection of the size variant chelae morph strains for sustainable utilization.
淡水大对虾(Macrobrachium vollenhovenii)是最大的大对虾物种之一,是一种防治人类血吸虫病的生物制剂,也是西非沿河社区的廉价蛋白质来源。然而,由于存在大小和遗传亲缘关系不明的形态型,其可持续利用的水产养殖发展面临着身份隐匿的挑战。本研究旨在通过 3 × 2 随机区组实验设计,调查沃伦霍芬鲤螯足形态的最大尺寸和进化联系,以准确识别和利用沃伦霍芬鲤。在旺季(7月至9月)双月实地调查期间,从阿塞吉雷湖和奥贡河渔民的渔获物中分别获得了90个最大的沃伦霍文鲤螯状体形态样本,分别代表EAAL、LLAL、SLAL-GAALs和EAOR、LLOR、SLOR-GAORs。对这些标本的体型相关参数--长度(厘米)、重量(克)和条件因子(K)进行了差异分析(p < 0.05)。利用标本的 16S rRNA 核苷酸序列来推断系统发生联系、单核苷酸多态性(SNP)和氨基酸翻译,同时参考 NCBI 参考文献(NCBIrefseq)。在 GAALs 中,SLAL 和 LLAL 的体重(W)和条件因子(K)相似;EAAL 显著最低;在 GAORs 中,SLOR 和 LLOR 相似;EAOR 显著最低。在 GAALs 中,EAAL、LLAL 和 SLAL 的 L、W 和 K 均高于对应的 GAORs。序列形成了两个多型组:EAOR分支来自EAAL,其中100.0%EA以75.0% NCBIrefseqs为根,形成一个支系;GAOR-SLOR和LLOR分支形成GAOR-LLAL以SLAL为根,其中100.0%LL和SL以KJ463387.1(Badagry)为根,形成另一个支系。SNP Locus 91 将 100.0%GAOR 与 100.0%GAAL 和 100.0%NCBIrefseqs 分隔开来,转化为缬氨酸;SNP Locus 171 将 100.0%EA 及其共根 NCBIrefseqs 与 100.0%LL、SL 及其共根 NCBIrefseqs 分隔开来,转化为甘氨酸/谷氨酸变化。无论栖息地如何,等长左右螯和不等长左右螯标本分别属于小型和健壮型。它们是大小不同的连接支系,具有蛋白质翻译差异,可通过 16S rRNA SNP 位置 171 进行划分;其大小不同的栖息地品系可通过 SNP 位置 91 进行划分。这些 SNP 标记将有助于精确鉴定和选择体型变异的螯龙形态品系,以实现可持续利用。
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引用次数: 0
Confirmed presence of the enigmatic ant Aphaenogaster gemella (Hymenoptera: Formicidae) in Iberia 证实伊比利亚存在神秘的蚂蚁 Aphaenogaster gemella(膜翅目:蚁科)。
Pub Date : 2024-07-03 DOI: 10.1186/s41936-024-00375-9
Javier Arcos, Paco Alarcón
While the Iberian Peninsula has been relatively well-studied from a myrmecological standpoint, the true presence of certain ant species has remained obscure for decades. In this context, the case of A. gemella (Roger, 1862) stands out as one of the most intriguing examples. Initially described from the Balearic Islands, this conspicuous species seemingly vanished from the archipelago by the 1980s, confining its current distribution to the Maghreb region. However, lingering doubt has persisted regarding its potential presence in Iberia, based on some old bibliographic records from Spain and Portugal. This study confirms the first known established population of A. gemella in the Iberian Peninsula (Tarifa, Southern Iberia). Two colonies were detected in an urban grass patch within the city center. The validity of other Iberian records regarding the species and its status as an exotic species are also discussed. The presence of A. gemella in Southern Iberia highlights the need for targeted sampling efforts to delineate its actual range and distinguish it from morphologically similar species in the region.
虽然从昆虫学的角度来看,对伊比利亚半岛的研究相对较多,但数十年来,某些蚂蚁物种的真实存在情况仍不为人所知。在这种情况下,A. gemella(Roger,1862 年)的案例是最引人入胜的例子之一。这种显眼的物种最初描述于巴利阿里群岛,到 20 世纪 80 年代似乎从该群岛消失了,目前只分布在马格里布地区。然而,根据西班牙和葡萄牙的一些旧书目记录,人们对其在伊比利亚的潜在存在仍心存疑虑。本研究证实了伊比利亚半岛(伊比利亚南部,塔里法)已知的第一个 A. gemella 种群。在市中心的一片草地上发现了两个群落。研究还讨论了伊比利亚其他有关该物种的记录的有效性及其作为外来物种的地位。伊比利亚南部出现 A. gemella 突出表明,有必要开展有针对性的取样工作,以划定其实际分布范围,并将其与该地区形态相似的物种区分开来。
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引用次数: 0
Ginger (Zingiber officinale) attenuates the neurotoxicity in rats induced by organophosphate pesticide 生姜可减轻有机磷农药对大鼠神经系统的毒性
Pub Date : 2024-07-01 DOI: 10.1186/s41936-024-00374-w
Poonam Keshav, Deepak Kumar Goyal, Santosh Singh
We are exposed to different chemicals in various ways in our daily life, and these can be toxic at minute concentrations. The pesticides used for different purposes are also toxic and may pose threat to life by inducing oxidative stress. Dichlorvos (DDVP) is an organophosphate pesticide used for various purposes and is also reported to be toxic. In this study, the neurotoxicity of DDVP exposure was studied. The role of ginger, Zingiber officinale (ZO), was also evaluated against the neurotoxic effects of DDVP. Forty-eight Wistar rats of both the sexes were used in this study. The rats were exposed to DDVP and post-treatment with ZO was given. The oxidative stress in terms of lipid peroxidation (LPO), reduced glutathione (GSH), catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), and glutathione reductase (GR) levels were estimated after exposure and treatment. DDVP resulted in oxidative stress, evidenced by enhanced LPO level. The simultaneous reductions in other non-enzymatic and enzymatic antioxidants were reported. The post-treatment with ZO led to a reduction in oxidative stress in rat brains. The levels of SOD, CAT, GSH, GR, and GPx were increased whereas declined levels of LPO were reported after treatment. Hence, ginger can help mitigate the pesticide toxicity through the up-regulation of antioxidant levels.
在日常生活中,我们会以各种方式接触到不同的化学物质,这些化学物质在微小的浓度下就会产生毒性。用于不同用途的杀虫剂也具有毒性,并可能通过诱发氧化应激对生命构成威胁。敌敌畏(DDVP)是一种用于各种用途的有机磷农药,据报道也具有毒性。本研究对接触敌敌畏的神经毒性进行了研究。同时还评估了生姜(Zingiber officinale,ZO)在对抗 DDVP 神经毒性方面的作用。本研究使用了 48 只雌雄 Wistar 大鼠。大鼠暴露于 DDVP 后,再给予 ZO 治疗。暴露和治疗后,以脂质过氧化物(LPO)、还原型谷胱甘肽(GSH)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GPx)和谷胱甘肽还原酶(GR)的水平来估算氧化应激。DDVP 导致氧化应激,表现为 LPO 水平升高。据报道,其他非酶和酶抗氧化剂也同时减少。用 ZO 进行后处理后,大鼠大脑中的氧化应激减少。据报告,处理后 SOD、CAT、GSH、GR 和 GPx 的水平有所提高,而 LPO 的水平有所下降。因此,生姜可以通过提高抗氧化剂水平来减轻农药毒性。
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引用次数: 0
Triazophos toxicity induced histological abnormalities in Heteropneustes fossilis Bloch 1794 (Siluriformes: Heteropneustidae) organs and assessment of recovery response 三唑磷毒性诱发化石紫菀(Heteropneustes fossilis Bloch 1794)(丝形目:紫菀科)器官组织学异常及恢复反应评估
Pub Date : 2024-06-28 DOI: 10.1186/s41936-024-00373-x
Kanniyappan Loganathan, Samuel Tennyson, Subramanian Arivoli
Agricultural pesticides have toxic effects in the aquatic ecosystem, and their persistence poses a hazard to aquatic life, as seen by fish poisoning, both acute and chronic. Triazophos, a broad-spectrum organophosphate insecticide, is used to control agricultural crops from insect pests. For a period of 10 days, Heteropneustes fossilis, a fish of great economic and therapeutic value, was exposed to various levels of triazophos toxicity (5, 10 and 15 ppm), after which they were sacrificed. For recovery tests, the treated fish were switched to clean tap water after 10 days of exposure to the toxicant, examined for another 10 days, and then sacrificed. The histological changes in the tissues of the sacrificed fishes' gill, liver, intestine, kidney, brain, and muscle (treatment and recovery) were investigated. The histology investigations revealed that the toxicant was hazardous, with histopathological changes increasing as the concentration of the toxicant increased. The gills had the most damage, with fusion of secondary lamella and epithelial hyperplasia; liver had vacuolization, pyknotic nuclei, and focal necrosis; intestine had degenerated, necrotic villi, degeneration of epithelial cells, and atropy; kidney had narrowing of the tubular lumen, pyknotic nuclei, hypertrophy, degeneration; swelling, haemorrhage, larger neuronal cells, and karyolysis were observed in the brain, whereas infiltration of leucocytes, loss of striated muscles, and an increase in intra fibril area were observed in the muscle. When compared to the treated fishes, the 10-day recovery research demonstrated tissue damage and a slower recovery pattern. Triazophos caused histological changes in the gill, liver, intestine, kidney, brain and muscle of the test fish Heteropneustes fossilis. With reference to recovery response, a slow recovery was observed. Furthermore, this is the first investigation into the effects of triazophos on the recovery response in Heteropneustes fossilis.
农用杀虫剂在水生生态系统中具有毒性作用,其持久性对水生生物造成危害,从鱼类急性和慢性中毒就可看出这一点。三唑磷是一种广谱有机磷杀虫剂,用于控制农作物的虫害。对具有重要经济和治疗价值的化石紫菀鱼进行为期 10 天的不同浓度(5、10 和 15 ppm)的三唑磷毒性试验,然后将其处死。在恢复试验中,经过处理的鱼在接触毒物 10 天后换用干净的自来水,再观察 10 天,然后处死。对牺牲鱼鳃、肝、肠、肾、脑和肌肉组织(处理和恢复)的组织学变化进行了调查。组织学调查显示,毒物具有危害性,组织病理学变化随着毒物浓度的增加而加剧。鳃的损伤最严重,出现次生薄片融合和上皮增生;肝脏出现空泡化、细胞核萎缩和局灶性坏死;肠道出现绒毛变性、坏死、上皮细胞变性和萎缩;在大脑中观察到肿胀、出血、神经元细胞增大和裂解,而在肌肉中观察到白细胞浸润、横纹肌消失和纤维内面积增加。与经处理的鱼类相比,10 天的恢复研究显示出组织损伤和较慢的恢复模式。三唑磷导致试验鱼化石紫菀的鳃、肝、肠、肾、脑和肌肉发生组织学变化。在恢复反应方面,观察到恢复速度较慢。此外,这是首次研究三唑磷对化石紫菀恢复反应的影响。
{"title":"Triazophos toxicity induced histological abnormalities in Heteropneustes fossilis Bloch 1794 (Siluriformes: Heteropneustidae) organs and assessment of recovery response","authors":"Kanniyappan Loganathan, Samuel Tennyson, Subramanian Arivoli","doi":"10.1186/s41936-024-00373-x","DOIUrl":"https://doi.org/10.1186/s41936-024-00373-x","url":null,"abstract":"Agricultural pesticides have toxic effects in the aquatic ecosystem, and their persistence poses a hazard to aquatic life, as seen by fish poisoning, both acute and chronic. Triazophos, a broad-spectrum organophosphate insecticide, is used to control agricultural crops from insect pests. For a period of 10 days, Heteropneustes fossilis, a fish of great economic and therapeutic value, was exposed to various levels of triazophos toxicity (5, 10 and 15 ppm), after which they were sacrificed. For recovery tests, the treated fish were switched to clean tap water after 10 days of exposure to the toxicant, examined for another 10 days, and then sacrificed. The histological changes in the tissues of the sacrificed fishes' gill, liver, intestine, kidney, brain, and muscle (treatment and recovery) were investigated. The histology investigations revealed that the toxicant was hazardous, with histopathological changes increasing as the concentration of the toxicant increased. The gills had the most damage, with fusion of secondary lamella and epithelial hyperplasia; liver had vacuolization, pyknotic nuclei, and focal necrosis; intestine had degenerated, necrotic villi, degeneration of epithelial cells, and atropy; kidney had narrowing of the tubular lumen, pyknotic nuclei, hypertrophy, degeneration; swelling, haemorrhage, larger neuronal cells, and karyolysis were observed in the brain, whereas infiltration of leucocytes, loss of striated muscles, and an increase in intra fibril area were observed in the muscle. When compared to the treated fishes, the 10-day recovery research demonstrated tissue damage and a slower recovery pattern. Triazophos caused histological changes in the gill, liver, intestine, kidney, brain and muscle of the test fish Heteropneustes fossilis. With reference to recovery response, a slow recovery was observed. Furthermore, this is the first investigation into the effects of triazophos on the recovery response in Heteropneustes fossilis.","PeriodicalId":22591,"journal":{"name":"The Journal of Basic and Applied Zoology","volume":"202 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The repository of biocontrol agents for Spodoptera frugiperda (Smith, 1797) with emphasis on their mode of action 褶翅目蚜虫(Spodoptera frugiperda)(史密斯,1797 年)生物控制剂库,重点介绍其作用模式
Pub Date : 2024-06-25 DOI: 10.1186/s41936-024-00358-w
Samar Mahmood, Hina Parwez
Spodoptera frugiperda (Smith, 1797) is one of the most destructive pests of Maize plants, causing an estimated 40% crop loss in 2019. It is a native pest of America and difficult to control since it has developed resistance against most insecticides efficient in controlling lepidopteran pests, including recommended Chlorantraniliprole and Flubendiamide. Due to the increasing need for a change in pest management methods, it is necessary to consider biological control on a commercial level. In this review, we have put together a list of all the biocontrol agents (parasites, parasitoids, predators, viruses, bacteria, and fungi) reported from different parts of the world effective in managing the impact of S. frugiperda, along with an elaborate mechanism of action of each natural killer. After analyzing the procured data, Pareto charts were prepared plotting the distribution of the mortality of S. frugiperda caused by parasitoids and pathogens. The regional abundance was plotted in the form of graph. Pareto’s charts (Fig. 6) shows that Telenomus remus and Steinernema riobrave accounts for a maximum of 90% mortality of S. frugiperda among other high contributors (Chelonus insularis, Trichospilus pupivora, Ophion flavidus, Heterorhabditis indica, Heterorhabditis bacteriophora, Trichogramma mwanai). NPV and Metarhizium anisopliae were proved to be the most effective micro-entomopathogens causing up to 98% mortality. Also, these entomopathogens were reported all over the world but found abundant in Mexico and India. Based on this study, we recommend the augmentation of entomopathogenic insects on a large scale only to commercialize them in the market and produce different ready-to-use pathogenic formulations to be applied in the fields combined with a significantly less quantity of harmful chemical ailments.
Spodoptera frugiperda(Smith,1797 年)是对玉米植株破坏性最大的害虫之一,估计在 2019 年会造成 40% 的作物损失。它是美洲的原生害虫,很难控制,因为它已经对大多数有效控制鳞翅目害虫的杀虫剂产生了抗药性,包括推荐使用的 Chlorantraniliprole 和 Flubendiamide。由于越来越需要改变害虫管理方法,因此有必要在商业层面上考虑生物防治。在这篇综述中,我们汇总了世界各地报告的所有生物防治剂(寄生虫、寄生蜂、捕食者、病毒、细菌和真菌),这些生物防治剂能有效控制 S. frugiperda 的影响,并详细说明了每种天然杀手的作用机理。在对所获得的数据进行分析后,绘制了帕累托图表,显示寄生虫和病原体造成的节肢动物死亡率的分布情况。区域丰度以图表形式绘制。帕累托图表(图 6)显示,在其他高致死率寄生虫(Chelonus insularis、Trichospilus pupivora、Ophion flavidus、Heterorhabditis indica、Heterorhabditis bacteriophora、Trichogramma mwanai)中,Telenomus remus 和 Steinernema riobrave 最多造成 90%的节节虫死亡。事实证明,NPV 和 Metarhizium anisopliae 是最有效的微型昆虫病原体,死亡率高达 98%。此外,这些昆虫病原体在世界各地都有报道,但在墨西哥和印度大量存在。基于这项研究,我们建议大规模增殖昆虫病原昆虫,以便在市场上将其商业化,并生产出不同的即用病原制剂,在田间施用,同时大幅减少有害化学物质的用量。
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引用次数: 0
A review on the anti-parasitic activity of ruthenium compounds 钌化合物抗寄生虫活性综述
Pub Date : 2024-06-15 DOI: 10.1186/s41936-024-00371-z
Shibam Chakraborty, Sumit Ghosh, Shauryabrota Dalui, Avijit Dey
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引用次数: 0
Evidences of in vivo cytotoxic and apoptotic potential of anthelmintic phytochemical kaempferol derivative isolated from Lysimachia ramosa (Wall. ex Duby) in Wistar rats 在 Wistar 大鼠体内证明从 Lysimachia ramosa (Wall. ex Duby) 中分离出的抗蠕虫植物化学物质山奈酚衍生物具有细胞毒性和凋亡潜能
Pub Date : 2024-06-11 DOI: 10.1186/s41936-024-00369-7
Ashish Sarkar, Deepjyoti Dev, Bishnupada Roy
{"title":"Evidences of in vivo cytotoxic and apoptotic potential of anthelmintic phytochemical kaempferol derivative isolated from Lysimachia ramosa (Wall. ex Duby) in Wistar rats","authors":"Ashish Sarkar, Deepjyoti Dev, Bishnupada Roy","doi":"10.1186/s41936-024-00369-7","DOIUrl":"https://doi.org/10.1186/s41936-024-00369-7","url":null,"abstract":"","PeriodicalId":22591,"journal":{"name":"The Journal of Basic and Applied Zoology","volume":"39 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141356744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comprehensive examination of camel (Camelus Dromedaries) otic prominence through morphological and CT imaging studies 通过形态学和 CT 成像研究对骆驼(Camelus Dromedaries)耳突进行全面检查
Pub Date : 2024-06-01 DOI: 10.1186/s41936-024-00368-8
Mohamed W. El-Sherif, Mohamed A. Nazih
This study explored the morphological anatomy of otic prominences in camels using advanced computed tomography (CT). Nine adult cadaver camel heads underwent CT scanning to generate detailed images of the otic prominences, mastoid process, styloid process, stylomastoid foramen, external acoustic meatus, bulla tympanica, and muscular processes. The morphological anatomy of otic prominences was studied in nine skulls. The anatomical features were analyzed, revealing a compact and closely collected configuration of otic prominences. Unique characteristics of the mastoid process, bulla tympanica, and styloid process were observed, challenging the conventional descriptions. This study underscores the value of CT scans in enhancing anatomical studies and provides insights into comparative veterinary anatomy, facilitating the evaluation of various conditions and disorders in camels.
本研究利用先进的计算机断层扫描(CT)技术探索骆驼耳突的形态解剖。对九个成年尸体骆驼头颅进行了 CT 扫描,以生成耳突、乳突、花键突、花键乳突孔、外耳道、鼓室和肌肉突的详细图像。对九个头骨的耳突形态解剖进行了研究。通过对解剖特征的分析,发现耳突的构造紧凑而紧密。研究人员观察到乳突、鼓室和花键突的独特特征,这对传统的描述提出了挑战。这项研究强调了 CT 扫描在加强解剖学研究方面的价值,并为比较兽医解剖学提供了见解,有助于评估骆驼的各种状况和疾病。
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引用次数: 0
Dominance structure and constancy of spiders in the Indian Thar desert 印度塔尔沙漠中蜘蛛的优势结构和恒定性
Pub Date : 2024-05-27 DOI: 10.1186/s41936-024-00366-w
Neisseril Anirudhan Kashmeera, Ambalaparambil Vasu Sudhikumar
The knowledge about the species of a habitat (both resident and transient/dominant and rare) is a vital step to plan the conservation measures. Being generalist predators, spiders help controlling the population of their prey and maintain ecosystem stability. This makes spiders excellent bio-indicators for assessing the impact of anthropogenic disturbance factors on natural ecosystems (De, Siliwal, Uniyal and Hussain in Trop. Ecol. 63: 1–7, 2021). The aim of this study was to assess the dominance structure and constancy of spiders in three different habitats (Sand dunes, Riparian and Rocky) of the Thar desert. Study was conducted from March 2017 to February 2019 covering all seasons. The eudominant species in sand dunes and rocky desert belonged to the family Thomisidae. These species were Tmarus sp. 1 and Tmarus kotigeharus Tikader, 1963, respectively. There were two eudominants in Riparian habitat (Oecobius putus O. Pickard-Cambridge, 1876 and Menemerus bivittatus (Dufour, 1831)). Through the analysis of constancy of all the species in the Thar desert, it was revealed that three species were constant in all the three habitats. The number of accessory and accidental species was far higher than constant species in all the habitats. The number of accessory and accidental spider species in all habitats was far higher than constants due to the unstability of spider population. Therefore, this study highlights the necessity for conservation of these habitats of the Thar desert.
了解栖息地的物种(包括常住物种和暂居物种/优势物种和稀有物种)是规划保护措施的重要一步。作为食肉动物,蜘蛛有助于控制猎物的数量,维持生态系统的稳定。这使得蜘蛛成为评估人为干扰因素对自然生态系统影响的极佳生物指标(De, Siliwal, Uniyal and Hussain in Trop. Ecol. 63: 1-7, 2021)。本研究旨在评估塔尔沙漠三种不同生境(沙丘、河岸和岩石)中蜘蛛的优势结构和恒定性。研究从 2017 年 3 月至 2019 年 2 月进行,涵盖所有季节。沙丘和岩石沙漠中的主要物种属于托米斯科(Thomisidae)。这些物种分别是Tmarus sp.河岸栖息地有两个主要物种(Oecobius putus O. Pickard-Cambridge, 1876 和 Menemerus bivittatus (Dufour, 1831))。通过分析塔尔沙漠中所有物种的恒定性,发现有三个物种在所有三种生境中都是恒定的。在所有栖息地中,附属物种和偶然物种的数量都远远高于恒定物种。由于蜘蛛种群的不稳定性,所有栖息地的附属物种和意外物种数量都远远高于常量物种。因此,这项研究强调了保护塔尔沙漠这些栖息地的必要性。
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引用次数: 0
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The Journal of Basic and Applied Zoology
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