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Predation of Natalus macrourus (Chiroptera: Natalidae) by Trachops cirrhosus (Chiroptera: Phyllostomidae) in a ferriferous Brazilian Amazon cave 巴西亚马逊河流域一个铁矿洞穴中鲎(Chiroptera: Phyllostomidae)对Natalus macrourus(Chiroptera: Natalidae)的捕食行为
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-09-10 DOI: 10.1515/mammalia-2024-0026
Sebastião Maximiano Corrêa Genelhú, Marcelo Henrique Marcos, Xavier Prous, Mariane Ribeiro, Thadeu Pietrobon
Trachops cirrhosus bats are especially notable for feeding on various types of preys throughout its range, including other bat species. Here we report predation events of T. cirrhosus on Natalus macrourus, a new bat species among a wide range of prey.
卷尾蝙蝠(Trachops cirrhosus)在其分布区以各种类型的猎物为食,包括其他蝙蝠物种,这一点尤其引人注目。在这里,我们报告了卷尾蝙蝠捕食Natalus macrourus(一种新的蝙蝠物种)的情况。
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引用次数: 0
First report of a leucistic Brown Agouti (Dasyprocta variegata) in Bolivia 玻利维亚首次报告白化褐阿古提(Dasyprocta variegata)的情况
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-08-29 DOI: 10.1515/mammalia-2024-0101
Jente Ottenburghs, Edward Smits, Mark van Leeuwen, Tjalle Boorsma, Luz Natalia Mercado Callaú, Miguel Martinez Diaz, Peter van der Sleen
Cases of anomalous coloration are regularly reported in Neotropical mammals, including the rodent family Dasyproctidae (agoutis and acouchis) where leucistic and albino individuals have been observed. Here, we document the first case of leucism in the Brown Agouti (Dasyprocta variegata) in Bolivia. During a camera trap survey of the Barba Azul Nature Reserve, we obtained footage of a Brown Agouti with a completely white body. Additional pictures of this individual revealed that it has black eyes, indicating leucism instead of albinism. Previous observations (since 2017) of a white agouti in the area suggest that these anomalously colored individuals can survive in the wild. Rare observations of top predators suggest a relatively low predation pressure in the area. We had only one record of a South-American Puma (Puma concolor) during our camera trap survey. Hence, leucistic individuals of a common prey species might also be indicative of the dwindling population densities of top predators in the region.
在新热带地区的哺乳动物中,包括啮齿类 Dasyproctidae(褐箭蚁科和褐箭蚁科)在内,经常有关于色斑异常的报道,在这些动物中,人们观察到了白化和白化个体。在这里,我们记录了玻利维亚第一例褐马鸡(Dasyprocta variegata)的白化现象。在对巴尔巴阿苏尔自然保护区(Barba Azul Nature Reserve)进行相机陷阱调查时,我们拍摄到了一只全身全白的褐马鸡。对这只个体的补充照片显示,它的眼睛是黑色的,表明它是白化病而非白化病。之前(自 2017 年以来)在该地区观察到的一只白色褐马鸡表明,这些颜色异常的个体可以在野外生存。对顶级捕食者的罕见观察表明,该地区的捕食压力相对较小。在我们的相机陷阱调查中,只发现了一只南美美洲狮(Puma concolor)。因此,常见猎物物种的白化个体也可能表明该地区顶级掠食者的数量正在减少。
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引用次数: 0
Three small species of shrews (Soricidae) from the Salonga National Park, Democratic Republic of the Congo, representing two new taxa and a new record 刚果民主共和国萨隆加国家公园的三种小型鼩鼱(Soricidae),代表两个新分类群和一个新记录
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-08-28 DOI: 10.1515/mammalia-2024-0036
Rainer Hutterer, Merlijn Jocque, Jan Mertens, Dieu M. Mpongo, Menard Mbende
We report on a small collection of shrews from the central part of the Democratic Republic of Congo. Three taxa are recognized, of which a long-tailed and a middle-sized species of Crocidura are described as C. salonga sp. nov. and C. binco sp. nov. Crocidura lwiroensis is recorded for the first time since its description from near Lake Tanganyika in 2013.
我们报告了从刚果民主共和国中部采集的一小批鼩鼱。我们发现了三个类群,其中一个长尾种和一个中型种被描述为Crocidura salonga sp.nov.和C. binco sp.nov.。Crocidura lwiroensis自2013年在坦噶尼喀湖附近被描述以来首次被记录。
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引用次数: 0
Effect of seasonal variation on feeding and food preference of olive baboons (Papio anubis) in a protected Guinean savannah of West Africa 季节变化对西非几内亚受保护草原上橄榄狒狒(Papio anubis)摄食和食物偏好的影响
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-08-23 DOI: 10.1515/mammalia-2024-0019
Funmilayo L. Oni, Delagnon Assou, Gbolagade A. Lameed, Neil D’Cruze, Lars Kulik, Luca Luiselli
This study investigates the effects of seasonal changes in vegetation productivity on olive baboon feeding behavior in a protected Guinea savannah (Kainji Lake National Park). Over two consecutive years (2017 and 2018), observations were conducted both during the wet and dry seasons using a scan sampling method. Results revealed that olive baboons consumed 34 plant species belonging to 20 families, with 28 species in the wet season and 12 in the dry season. A total of 922 feeding events were recorded in the wet season and 621 in the dry season, indicating significant seasonal variation. Fruits were the preferred food item, especially in the dry season, followed by animal matter, seeds, leaves, and subterranean food. Interestingly, baboons also consumed tree bark regardless of season. In addition, their consumption of fruits (in both seasons) and seeds (in the dry season) highlights their ecological role in seed dispersal and plant regeneration within the park. To sustain baboon (and all non-human primates) conservation efforts within the park, it’s important to maintain a high diversity and abundance of native fruit trees throughout the year. This study highlights the importance of understanding how seasonal changes in vegetation affect olive baboon feeding behavior for effective park management and biodiversity conservation.
本研究调查了植被生产力的季节性变化对几内亚热带稀树草原保护区(凯恩吉湖国家公园)橄榄狒狒觅食行为的影响。连续两年(2017 年和 2018 年),在雨季和旱季均采用扫描取样法进行了观察。结果显示,橄榄狒狒食用了隶属于 20 个科的 34 种植物,其中雨季 28 种,旱季 12 种。在雨季和旱季分别记录了922次和621次觅食活动,这表明季节变化很大。水果是狒狒的首选食物,尤其是在旱季,其次是动物性食物、种子、树叶和地下食物。有趣的是,狒狒在任何季节都会食用树皮。此外,狒狒对水果(两个季节都吃)和种子(旱季吃)的摄取突出了它们在公园内传播种子和植物再生方面的生态作用。为了维持公园内狒狒(以及所有非人灵长类动物)的保护工作,保持本地果树全年的多样性和丰富性非常重要。这项研究强调了了解植被的季节性变化如何影响橄榄狒狒觅食行为对于有效管理公园和保护生物多样性的重要性。
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引用次数: 0
Current distribution of the Reeves’ muntjac Muntiacus reevesi (Ogilby, 1839) in France 里维斯麂(Muntiacus reevesi)(Ogilby,1839 年)在法国的分布现状
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-08-14 DOI: 10.1515/mammalia-2024-0022
Jean-François Maillard, Hannah Bonhotal, Marylou Terlin, Benoît Pisanu, Paul Hurel
The Reeves’ muntjac Muntiacus reevesi is an ungulate native to China and Taiwan that has been released into the wild in several continental European countries and the United Kingdom. We present recent records of the species in mainland France. We also investigated the dispersal rate and density of the established population in the Centre-Val de Loire region. The number of observations of M. reevesi was low in the period 2008–2016, increased sharply until 2019 and then decreased until 2023. From a comparison between the distribution in 2008–2012 and 2013–2017, the dispersal rate was estimated at an average of 3.2 km/year, and 7.6 km/year between 2013–2017 and 2018–2023. Based on a camera trap protocol, the population density was assumed to be very low in forested areas but estimated with a lack of robustness due to a single observation. Further efforts must be made to better assess the risk of an increase in the wild population of Reeves’ muntjac in the Centre-Val de Loire region. To prevent potential impacts, rapid control measures can be put in place in the large area (10,800 km2) where muntjacs are now rapidly spreading.
里维斯麂(Muntiacus reevesi)是一种原产于中国大陆和台湾地区的有蹄类动物,已在欧洲大陆多个国家和英国被放归野外。我们介绍了该物种在法国大陆的最新记录。我们还调查了卢瓦尔河中游地区已建立种群的扩散率和密度。2008-2016年期间,M. reevesi的观测数量较少,直到2019年才急剧增加,然后直到2023年才有所减少。通过比较2008-2012年和2013-2017年的分布情况,估计其扩散速度平均为每年3.2公里,2013-2017年和2018-2023年之间平均为每年7.6公里。根据相机陷阱协议,假定森林地区的种群密度很低,但由于仅有一次观测,估算结果缺乏稳健性。必须进一步努力,更好地评估卢瓦尔河中游地区里维斯麂野生种群数量增加的风险。为了防止潜在的影响,可以在麂目前迅速扩散的大片区域(10800 平方公里)采取快速控制措施。
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引用次数: 0
Climate change impacts on the distribution of Dryomys laniger (woolly dormouse) in Türkiye: a data-driven approach 气候变化对土耳其毛睡鼠分布的影响:数据驱动法
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-08-05 DOI: 10.1515/mammalia-2024-0016
Zeycan Helvacı
This study examines the population structure, ecological niche, and vulnerability to climate change of the woolly dormouse Dryomys laniger in Türkiye. Integrating genetic data with species distribution modeling, the research predicts suitable habitats for D. laniger under current and future climate change scenarios until the year 2100. Using an ensemble of two machine learning models, this study finds that by 2040, the range of D. laniger will be reduced significantly, particularly in southern populations. Eastern areas emerge as a potential refuge, showing slight expansion and colonization. The low genetic diversity in this eastern population indicates the need for long-term adaptability of D. laniger. Due to the unique adaptive potential of each population, this research highlights the importance of region-specific management plans to ensure the long-term survival of this species, which appears to be vulnerable to habitat fragmentation.
本研究考察了图尔基耶的毛睡鼠Dryomys laniger的种群结构、生态位和对气候变化的脆弱性。该研究将遗传数据与物种分布建模相结合,预测了在当前和未来的气候变化情景下直到 2100 年 D. laniger 的适宜栖息地。这项研究利用两个机器学习模型的组合发现,到2040年,D. laniger的分布范围将大幅缩小,尤其是南部种群。东部地区将成为潜在的避难所,出现轻微的扩张和殖民化。东部种群的遗传多样性较低,这表明 D. laniger 需要有长期的适应能力。由于每个种群都有独特的适应潜力,这项研究强调了针对特定地区制定管理计划的重要性,以确保该物种的长期生存,因为该物种似乎很容易受到栖息地破碎化的影响。
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引用次数: 0
Increase in the frequency of melanism in Abert’s Squirrel in Boulder, Colorado 科罗拉多州博尔德市阿伯特松鼠黑色素增多的频率增加
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-08-02 DOI: 10.1515/mammalia-2024-0047
Lake H. Barrett, Christian A. Nunes, Richard M. Lehtinen
In the northern portions of its range, Abert’s Squirrel (Sciurus aberti) has two color morphs: a wild-type gray morph and a melanistic morph. Using camera traps, citizen science data and in-person observations in and near Boulder, Colorado (USA), we compared current color morph frequencies to those reported in a 1969–1971 study. At all study sites, we observed a large and statistically significant increase in the frequency of the melanistic morph compared to historic data. We hypothesize that this increase may be due to selection favoring the melanistic morph in a changing forest environment.
在其分布区的北部,阿伯特松鼠(Sciurus aberti)有两种颜色形态:野生型灰色形态和黑色形态。通过在美国科罗拉多州博尔德市及其附近使用相机诱捕器、公民科学数据和亲自观察,我们将目前的颜色形态频率与 1969-1971 年研究报告中的频率进行了比较。在所有研究地点,我们都观察到,与历史数据相比,黑色形态出现的频率大幅增加,且具有显著的统计学意义。我们推测,这种增加可能是由于在不断变化的森林环境中有利于黑色形态的选择。
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引用次数: 0
Materials of garden dormouse summer nests in Germany 德国花园睡鼠夏季巢穴的材料
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-07-29 DOI: 10.1515/mammalia-2024-0014
Johannes Lang, Raissalyn M.E. Kneisel, Sven Büchner
Nesting is a central topic in the behavioural ecology of many species, but data on the materials used to construct mammal nests are rarely reported. This paper describes the most commonly used components from 25 summer nests of the garden dormouse, a small threatened rodent endemic to Europe. Median nest dry weight of 25 nests was 15.5 g (10.3–21.1 g) and moss was the most common material (78 %), followed by leaves (9 %). Mosses were also the most frequently used material, with Hypnum cupressiforme being the most frequently used taxon in 11 out of 25 nests.
筑巢是许多物种行为生态学的核心课题,但有关哺乳动物筑巢材料的数据却鲜有报道。本文描述了欧洲特有的小型濒危啮齿类动物花园睡鼠 25 个夏季巢中最常用的成分。25个巢干重中位数为15.5克(10.3-21.1克),苔藓是最常见的材料(78%),其次是树叶(9%)。苔藓也是最常用的材料,在25个巢穴中,有11个巢穴最常用苔藓类群。
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引用次数: 0
Rediscovery of the Bavarian pine vole (Microtus bavaricus) in Germany 德国巴伐利亚松鼠(Microtus bavaricus)的重新发现
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-07-27 DOI: 10.1515/mammalia-2024-0075
David Stille, Bernd-Ulrich Rudolph, Simon Peter Ripperger
We report the rediscovery of Microtus bavaricus in Germany, a small mammal that had not been recorded here in more than 60 years. Between 2012 and 2014, a citizen science project addressed cat owners and farmers to collect rodents killed by cats and traps. Until 2017, we conducted 3,432 live trap nights to rediscover the species in and around the area of its discovery. However, only a three-step approach (screening large areas for the occurrence of pine voles using camera trapping, live trapping for collecting genetic material, DNA-barcoding) allowed for the rediscovery of this elusive species near Mittenwald in 2023.
我们报告了在德国重新发现巴伐利亚鼠的情况,这种小型哺乳动物在德国已有60多年没有记录。2012 年至 2014 年间,一个公民科学项目面向猫主人和农民收集被猫和捕鼠器捕杀的啮齿动物。直到 2017 年,我们共进行了 3432 个活体诱捕夜,以便在发现该物种的地区及其周边地区重新发现该物种。然而,只有通过三步法(使用相机诱捕法筛选松田鼠出现的大面积区域、活体诱捕法收集遗传物质、DNA 条形码),才能在 2023 年在米滕瓦尔德附近重新发现这一难以捉摸的物种。
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引用次数: 0
The names of the Dusky Striped Squirrel (Funambulus obscurus, Sciuridae) and Kathleen Ryley in the Bombay Natural History Society’s Mammal Survey 孟买自然历史协会哺乳动物调查中的暗色条纹松鼠(Funambulus obscurus,Sciuridae)和凯瑟琳-莱利的名字
IF 1 4区 生物学 Q3 ZOOLOGY Pub Date : 2024-07-22 DOI: 10.1515/mammalia-2024-0055
Rajith Dissanayake, Jelle S. Zijlstra, Martina Darwich
We review the history of the Sri Lankan squirrel Funambulus obscurus in the context of the Bombay Natural History Society’s Mammal Survey of South Asia. Kathleen Ryley (1883–1935), who helped to compile the results of the Survey, was among the earliest women to name a species of mammal. She was the first to recognise the Sri Lankan species as distinct from its closest relative in southern India. This decision has been confirmed by recent research, but her chosen name for the species is no longer considered valid. We record the rediscovery of the holotype specimen of F. obscurus in Vienna, confirming its identity. We suggest the common name “Dusky Striped Squirrel” for the Sri Lankan F. obscurus and “Pygmy Striped Squirrel” for the Indian Funambulus sublineatus.
我们结合孟买自然历史学会的南亚哺乳动物调查,回顾了斯里兰卡松鼠 Funambulus obscurus 的历史。凯瑟琳-莱利(Kathleen Ryley,1883-1935 年)曾帮助汇编调查成果,是最早命名哺乳动物物种的女性之一。她是第一个承认斯里兰卡物种有别于其在南印度的近亲的人。最近的研究证实了这一决定,但她为该物种选择的名称已不再被认为有效。我们记录了在维也纳重新发现的 F. obscurus 主模式标本,确认了其身份。我们建议将斯里兰卡的 F. obscurus 俗名为 "暗色条纹松鼠",将印度的 Funambulus sublineatus 俗名为 "侏儒条纹松鼠"。
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引用次数: 0
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Mammalia
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