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Conspecific agonistic behaviour in the Mediterranean parrotfish 地中海鹦嘴鱼的非特异性痛苦行为
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-06-15 DOI: 10.1007/s10211-021-00373-y
David Abecasis, Pedro Afonso

Aggressive behaviour in fishes, particularly in territorial species, is a common trait used to defend resources such as food or mates. Territorial males of the Mediterranean parrotfish Sparisoma cretense have been described to chase away conspecifics yet other aggressive behaviour repertoire has not been reported for this species. We describe, for the first time, an extreme aggressive behaviour between two male Mediterranean parrotfish which includes biting and prolonged mouth locking.

鱼类的攻击行为,尤其是具有领地性的鱼类,是一种常见的特征,用于保护食物或配偶等资源。地中海鹦嘴鱼(Sparisoma cretense)的领地雄性被描述为追逐同种,但尚未报道该物种的其他攻击行为。我们首次描述了两只雄性地中海鹦嘴鱼之间的极端攻击行为,包括撕咬和长时间的嘴锁。
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引用次数: 0
Eastern gray squirrel (Sciurus carolinensis) color morphs do not differ in aggressiveness 东部灰松鼠(Sciurus carolinensis)的颜色形态在攻击性上没有差异
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-06-11 DOI: 10.1007/s10211-021-00372-z
Lee Cronk, Ryne Palombit

Eastern gray squirrels (Sciurus carolinensis) exhibit a variety of color morphs, including black. In the USA and UK, a common folk belief is that black squirrels are more aggressive than squirrels of other colors. We tested the biological basis of that belief using data from the 2018 Central Park squirrel census. Contrary to the belief, black squirrels do not chase other squirrels more often than do conspecifics of other colors. Black and non-black squirrels were equally likely to approach people for food and to display indifference to human presence, but black squirrels were more likely than non-black squirrels to flee from people. Although other research has found that aggression among squirrels increases when they live in higher population densities, black squirrels were no more aggressive than non-black squirrels despite the fact that they were sighted in parts of Central Park with higher squirrel population densities than other locations.

东部灰松鼠(Sciurus carolinensis)表现出各种各样的颜色变化,包括黑色。在美国和英国,人们普遍认为黑松鼠比其他颜色的松鼠更具攻击性。我们使用2018年中央公园松鼠普查的数据测试了这种观点的生物学基础。与人们的看法相反,黑松鼠并不比其他颜色的松鼠更经常追逐其他松鼠。黑松鼠和非黑松鼠接近人类获取食物的可能性相同,对人类的存在表现出漠不关心,但黑松鼠比非黑松鼠更有可能逃离人类。尽管其他研究发现,当松鼠生活在较高的种群密度时,它们的攻击性会增加,但黑松鼠并不比非黑松鼠更具攻击性,尽管它们出现在中央公园松鼠种群密度高于其他地方的部分地区。
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引用次数: 1
Social and environmental cues drive the intra-population variation in courtship behavior of a neotropical lekking bird 社会和环境的线索驱动求偶行为的新热带雏鸟种群内的变化
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-05-12 DOI: 10.1007/s10211-021-00371-0
Filipe Aramuni, Mariane Bosholn, Mariana Tolentino, Aline P. Rampini, Sandra M. Hernández-Rangel, Igor L. Kaefer, Marina Anciães

Sexual selection predicts evolution of secondary sexual traits favoring mating. Here, we address the within population variation in courtship display behavior among male White-throated Manakins, Corapipo gutturalis, from Central Amazonia. We repeatedly quantified the courtship display elements used by 16 males over multiple days and specifically tested whether male presence and displays at courts could be explained by variation in environmental conditions (forest shade with small sunny gaps, large sunny gaps, and cloudy), male age (juvenile or adult), or yet the social context (other males and female visits) during displays. Our results show that total male presence and time displaying varied with the total number of other males and female visits at the court. In addition, the type of courtship elements used in displays (assessed by principal component analysis) also varied with the presence of both females and other males on the court. Male age, however, did not influence male activity. Overall, the social context at the court was the strongest predictor of within-population variations in male courtship display, whereas light conditions only affected display duration. Variation in display repertoire with female presence might reflect variation in female preferences. In addition, similar displays among males of different age classes suggest a competitive, rather than cooperative lek system of White-throated Manakins in Central Amazonia.

性选择预示着有利于交配的第二性特征的进化。本文研究了中亚马逊地区雄性白喉侏儒鸟(Corapipo gutturalis)求偶行为的种群内变异。我们反复量化了16只雄性在数天内使用的求爱展示元素,并专门测试了雄性在法庭上的存在和展示是否可以通过环境条件的变化来解释(森林阴影有小阳光间隙,大阳光间隙,多云),雄性年龄(少年或成年),或者在展示期间的社会背景(其他雄性和雌性的访问)。我们的研究结果表明,男性的总存在和时间显示随着其他男性和女性在法庭上的总访问量而变化。此外,在展示中使用的求爱元素的类型(通过主成分分析评估)也随着雌性和其他雄性在球场上的存在而变化。然而,男性的年龄并不影响男性的活动。总的来说,宫廷的社会背景是种群内雄性求爱表现变化的最强预测因子,而光照条件只影响求爱持续时间。雌性存在时展示曲目的变化可能反映了雌性偏好的变化。此外,在不同年龄段的雄性中也有类似的表现,这表明亚马逊中部地区的白喉马纳金人存在竞争而非合作的韭系统。
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引用次数: 1
Increase in social interactions of wild Northern Gray gibbons (Hylobates funereus) during the mast fruiting period in the Danum Valley Conservation Area, Sabah, Malaysia 马来西亚沙巴州达嫩谷保护区野生北方灰长臂猿(Hylobates funereus)在繁殖期的社会互动增加
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-05-04 DOI: 10.1007/s10211-021-00370-1
Yoichi Inoue, Waidi Sinun, Kazuo Okanoya

In Southeast Asian forests, there are dramatic supra-annual peaks in fruit availability known as mast fruiting, followed by low-fruit periods. Gibbons are frugivorous small apes. In this study, we investigated how gibbons varied their social and calling behaviors in response to changes in fruit availability. Activity budget, travel distance, sleeping time, and song duration of two wild Northern Gray gibbon (Hylobates funereus) groups were investigated during both mast and non-mast fruiting periods at the Danum Valley Conservation Area, Sabah, Malaysia. Gibbons traveled longer, entered the sleeping tree later, and spent more time engaged in singing, playing, and grooming behaviors during the mast fruiting period. Playing and grooming are intra-group social interactions. Gibbon songs were sung antiphonally within and among groups, indicating that singing is both an intra- and inter-group social interaction. Furthermore, copulatory behaviors that occurred during female pregnancy were observed during the mast fruiting period, suggesting this might be a social interaction behavior rather than a reproductive activity. Our results show that gibbons extended their daily activity schedules during the mast fruiting period and spent this extra time on social interactions. We examined whether male song complexity increased during the mast fruiting period by using the Levenshtein distance method, but we did not find such a trend. In the mast fruiting period, gibbons may consume more energy than in the non-mast fruiting period. Social and calling behaviors are energetically costly. Our results show that there is a link between energy intake and social and calling behaviors.

在东南亚的森林中,有一个惊人的超年的水果供应高峰,被称为大果期,随后是低果期。长臂猿是食果的小型类人猿。在这项研究中,我们研究了长臂猿如何改变他们的社会和呼叫行为,以响应水果可得性的变化。在马来西亚沙巴州Danum Valley保护区,研究了两个野生北灰长臂猿(Hylobates funereus)类群在杆果期和非杆果期的活动强度、移动距离、睡眠时间和鸣叫持续时间。长臂猿旅行的时间更长,进入睡眠树的时间更晚,在最主要的结果期,长臂猿花更多的时间从事唱歌、玩耍和梳理行为。玩耍和梳理是群体内的社会互动。长臂猿的歌曲在群体内部和群体之间是对声的,这表明歌唱既是一种群体内部的社会互动,也是一种群体之间的社会互动。此外,在最肥大的结果期观察到雌性怀孕期间发生的交配行为,表明这可能是一种社会互动行为而不是生殖活动。我们的研究结果表明,长臂猿在主要结果期延长了他们的日常活动时间表,并将这些额外的时间用于社会互动。我们用Levenshtein距离法检验了雄鸟鸣声复杂度是否在结实期增加,但我们没有发现这种趋势。在杆果期,长臂猿可能比非杆果期消耗更多的能量。社交行为和召唤行为在能量上是昂贵的。我们的研究结果表明,能量摄入与社交和呼叫行为之间存在联系。
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引用次数: 1
Water turbidity–induced alterations in coloration and courtship behavior of male guppies (Poecilia reticulata) 水浊度引起雄性孔雀鱼(Poecilia reticulata)颜色和求偶行为的改变
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-04-21 DOI: 10.1007/s10211-021-00369-8
Bruno Camargo-dos-Santos, Bruno Bastos Gonçalves, Marina Sanson Bellot, Isabela Inforzato Guermandi, Assaf Barki, Percília Cardoso Giaquinto

Water turbidity deteriorates visibility and thereby may change the physiology and behavior of aquatic animals that rely on vision. In the guppy fish (Poecilia reticulata), a key element in the mating behavior and reproductive success of males is female mate choice, which is predominantly based on visual signals. Females choose attractive males based on body coloration, and males court females by displaying their coloration. Here, we demonstrate that guppy males exhibit morphological and behavioral adjustments in response to changes in the visual environment. Males reared in turbid water had more conspicuous coloration than males reared in clear water, with higher intensity of carotenoid-based and ultraviolet colors, but not a larger area of red spots on the body. However, they performed less courtship displays in turbid water than males reared in clear water performed in clear water. Thus, increased coloration in turbid-water males was not accompanied by increased effort to display it. Although our findings demonstrated developmental plasticity in mating-related traits, turbidity-induced alteration in coloration did not match behavior change as could be predicted by favoring male attractiveness.

水浑浊恶化能见度,从而可能改变依赖视觉的水生动物的生理和行为。在孔雀鱼(Poecilia reticulata)中,雄性的交配行为和繁殖成功的一个关键因素是雌性的配偶选择,这主要是基于视觉信号。雌性根据身体的颜色选择有吸引力的雄性,雄性通过展示自己的颜色来追求雌性。在这里,我们证明雄性孔雀鱼表现出形态和行为的调整,以应对视觉环境的变化。在浑浊水中饲养的雄性比在清澈水中饲养的雄性有更明显的颜色,类胡萝卜素和紫外线的颜色强度更高,但身体上的红点面积较小。然而,它们在浑浊水中的求偶行为比在清水中饲养的雄鱼要少。因此,浑浊水雄鱼颜色的增加并不伴随着表现颜色的增加。尽管我们的研究结果证明了交配相关性状的发育可塑性,但浑浊度引起的颜色变化与倾向于雄性吸引力的行为变化并不匹配。
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引用次数: 3
A non-vocal alarm? Effects of wing trill playbacks on antipredator responses in the scaled dove 非声音警报?翅膀颤音回放对斑鸠反捕食者反应的影响
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-04-15 DOI: 10.1007/s10211-021-00368-9
Paulo Sérgio Amorim, Raphael Igor Dias

Animals have evolved a variety of mechanisms to detect and avoid predation. The non-vocal sounds produced by some bird species during takeoff flights have been considered to function as an alarm call, because they may convey information about predation risk. Here, we experimentally investigated the effects of the non-vocal sound (wing trills) produced by the scaled dove (Columbina squammata) on antipredation behaviours of conspecifics. We evaluated the individual response to playbacks of the wing trill stimulus and compared it to the response to other two control stimuli (vocalizations of the scaled dove and the southern house wren). We found that doves’ probability to become vigilant or to display freezing behaviour was higher after a wing trills stimulus in comparison to the other playback stimuli. These results suggest that wing trill production in scaled doves communicate potential risks and are considered by the individuals in the decision-making process, but we cannot rule out the possibility that any takeoff flight sound might also promote antipredator responses.

动物已经进化出各种各样的机制来探测和躲避捕食者。一些鸟类在起飞时发出的非声音被认为是一种警报,因为它们可能传递有关捕食风险的信息。本文通过实验研究了鳞鸽(Columbina squammata)发出的非声音(翅鸣)对同种生物反捕食行为的影响。我们评估了个体对翅膀颤音刺激回放的反应,并将其与其他两种对照刺激(鳞鸽和南方鹪鹩的声音)的反应进行了比较。我们发现,与其他回放刺激相比,受到翅膀颤音刺激后,鸽子变得警惕或表现出冻结行为的可能性更高。这些结果表明,翅鸣的产生传达了潜在的风险,并被个体在决策过程中考虑,但我们不能排除任何起飞飞行声音也可能促进反捕食者反应的可能性。
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引用次数: 4
Correction to: Thanatological behavior of a female Leopard (Panthera pardus fusca) 修正:雌性豹(Panthera pardus fusca)的死亡行为
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-04-05 DOI: 10.1007/s10211-021-00367-w
Reuven Yosef, Hemant Dabi, Swapnil Kumbhojkar
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引用次数: 0
To group or not to group: group size dynamics and intestinal parasites in Indian peafowl populations 分组或不分组:印度孔雀种群的群体大小动态和肠道寄生虫
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-03-22 DOI: 10.1007/s10211-021-00366-x
Priyanka Dange, Pranav Mhaisalkar, Dhanashree Paranjpe

Animals can form groups for various reasons including safety from predators, access to potential mates and benefits of allo-parental care. However, there are costs associated with living in a group such as competition for food and/or mates with other members of the group, higher chances of disease transmission, etc. Group size dynamics can change with the biotic and abiotic environment around individuals. In the current study, we explored the links between group size dynamics and intestinal parasites of Indian peafowl (Pavo cristatus) in the context of seasons and food provisioning. Data for group size was collected across three seasons (pre-monsoon, monsoon and post-monsoon) at three field sites (Morachi Chincholi, Nashik and Rajasthan). Individual and group sightings of peafowl were noted down along with group size and composition (no. of males, females, adults, juveniles and sub-adults). Faecal samples were collected from food provision and non-provision areas across the same three seasons at same field sites. Parasite load in the samples was quantified using microscopic examination. Group size was significantly higher in pre-monsoon season as compared with monsoon and post-monsoon seasons. Monsoon and post-monsoon seasons had higher intestinal parasite prevalence and load as compared with pre-monsoon season. Thus, group size and intestinal parasites of Indian peafowl have an inverse relationship across seasons. Parasite load was significantly greater at food provision sites as compared with non-provision sites while parasite prevalence was comparable. Aggregation of individuals at the food provision sites may influence the parasite transmission and group-size dynamics in Indian peafowl. In conclusion, Indian peafowl are behaviourally plastic and fission-fusion of social groups may allow them to tackle ecological pressures such as predation and parasite transmission in different seasons.

动物形成群体的原因多种多样,包括躲避捕食者、获得潜在配偶以及获得非亲代照顾的好处。然而,在一个群体中生活是有代价的,例如与群体中的其他成员竞争食物和/或配偶,更高的疾病传播机会等。群体大小动态可以随着个体周围的生物和非生物环境而变化。在本研究中,我们在季节和食物供应的背景下探索了印度孔雀(Pavo cristatus)群体大小动态与肠道寄生虫之间的联系。在三个野外站点(Morachi Chincholi、Nashik和Rajasthan)收集了三个季节(季风前、季风和季风后)的群体规模数据。记录了孔雀的个体和群体的目击情况,以及群体的大小和组成。雄性、雌性、成虫、幼虫和亚成虫)。在相同的三个季节,在相同的野外地点,从食物供应区和非供应区收集粪便样本。用显微镜检查定量样品中的寄生虫载量。与季风和季风后季节相比,季风前季节的群体规模显著增加。与季风前季节相比,季风期和季风后季节肠道寄生虫患病率和负荷较高。因此,印度孔雀的群体规模和肠道寄生虫在不同季节呈反比关系。提供食物的地点与不提供食物的地点相比,寄生虫的负荷明显更大,而寄生虫的流行率是相当的。食物供应地点的个体聚集可能影响印度孔雀的寄生虫传播和群体大小动态。总之,印度孔雀在行为上具有可塑性,社会群体的分裂融合可能使它们能够应对不同季节的捕食和寄生虫传播等生态压力。
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引用次数: 2
Spatial segregation and interspecific killing of common dolphins (Delphinus delphis) by bottlenose dolphins (Tursiops truncatus) 宽吻海豚(Tursiops truncatus)对普通海豚(Delphinus delphis)的空间隔离和种间杀戮
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-03-12 DOI: 10.1007/s10211-021-00363-0
Séverine Methion, Bruno Díaz López

We described the spatial segregation of two species of cetaceans, the common dolphin and the bottlenose dolphin. We also document the first direct observation of interspecific killing of a common dolphin by bottlenose dolphins and of interspecific necrophilia in cetaceans. The study was conducted from 2014 to 2019 in the Ría de Arousa (Northwest Spain). This study highlights that both species use this area as a foraging ground, although they show different patterns of occurrence (bottlenose dolphins were always observed in the ria and common dolphins were mostly observed outside). During the study period, bottlenose dolphins and common dolphins were only observed on five occasions at the same time and in the same area, including three occasions which led to the displacement of the common dolphin(s), and one lethal interaction. In this event, several bottlenose dolphins, including adults and calves, and males and females, aggressively herded, chased, and assaulted a common dolphin. After approximatively 10 min, the common dolphin corpse appeared floating at the surface, and several adult male bottlenose dolphins repeatedly pushed the body underneath the water surface and an (attempted) copulation was witnessed. We suggest that the common dolphin could have been killed for competition for food resources or practice for infanticide, and sexual arousal might have been triggered by expression of dominance. Further information about the occurrence of such behaviors, and the outcomes through specific studies on fitness would be crucial to further understand the implication of such events.

我们描述了两种鲸目动物,普通海豚和宽吻海豚的空间隔离。我们还记录了第一次直接观察到宽吻海豚的种间杀戮和鲸目动物的种间恋尸癖。该研究于2014年至2019年在Ría de阿拉瓦(西班牙西北部)进行。这项研究强调,这两个物种都将这一地区作为觅食地,尽管它们表现出不同的出现模式(宽吻海豚总是在ria中观察到,而普通海豚大多在室外观察到)。在研究期间,宽吻海豚和普通海豚在同一时间和同一区域只观察到五次,其中包括三次导致普通海豚流离失所的情况,以及一次致命的相互作用。在这次事件中,几只宽吻海豚,包括成年海豚和幼海豚,雄性和雌性,积极地聚集在一起,追逐并袭击了一只普通的海豚。大约10分钟后,普通海豚的尸体漂浮在水面上,几只成年雄性宽吻海豚反复将尸体推到水面下,并目睹了(试图)交配。我们认为,普通的海豚可能是为了争夺食物资源或杀婴而被杀死的,而性唤起可能是由统治地位的表达引发的。进一步了解此类行为的发生,以及通过特定的适应度研究得出的结果,对于进一步理解此类事件的含义至关重要。
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引用次数: 6
Thanatological behavior of a female Leopard (Panthera pardus fusca) 雌性豹(Panthera pardus fusca)的死亡行为
IF 1.1 4区 生物学 Q2 Agricultural and Biological Sciences Pub Date : 2021-03-11 DOI: 10.1007/s10211-021-00364-z
Reuven Yosef, Hemant Dabi, Swapnil Kumbhojkar

We report an observation at Jhalana Leopard Reserve (JLR), Jaipur, India. On 16 March 2019, we saw a female walking up the mountain while calling her two, 4-month-old, male and female cubs. This allowed several safari jeeps to park in the shade of nearby Acacia trees. Two Striped Hyenas (Hyaena hyaena) approached and sniffed at the base of one of the trees near the parked jeeps. Upon seeing the Hyaenas, the female ran down the mountain, passed between the jeeps, and climbed into the tree. That is when we noticed the body of the female cub at a height of approximately 4.5 m. The female licked the body of the cub for several minutes and then picked it up in her mouth, climbed down from the tree, passed again between the jeeps, and walked up the mountain towards a dense stand of Thor (Euphorbia caducifolia), a thorny cactus. Our observations display how a mother leopard that has lost a cub refuses to abandon the carcass, cached it in a tree, and when discovered by scavengers removed it to a thicket of cacti. We consider the behavior towards her dead cub, and subsequent caching when discovered by other animals, to be the first evidence for thanatological expression in leopards.

我们报告了在印度斋浦尔Jhalana豹保护区(JLR)的一次观察。2019年3月16日,我们看到一只母熊一边爬上山,一边叫着她两个月大、四个月大的雄性和雌性幼崽。这使得几辆狩猎吉普车可以停在附近金合欢树的树荫下。两只条纹鬣狗(Hyaena Hyaena)走近停在吉普车附近的一棵树的底部,嗅了嗅。看到鬣狗后,母狼跑下山,穿过吉普车,爬上了树。就在那时,我们注意到了大约4.5米高的雌性幼崽的尸体。母熊舔了几分钟幼崽的身体,然后把它叼在嘴里,从树上爬下来,再次穿过吉普车,向山上长满荆棘仙人掌的托尔(Euphorbia caducifolia)走去。我们的观察显示,失去幼崽的母豹拒绝抛弃幼崽的尸体,将幼崽藏在树上,被食腐动物发现后,将幼崽移到仙人掌树丛中。我们认为,豹子对待死去幼崽的行为,以及被其他动物发现后的贮藏行为,是豹子死亡学表达的第一个证据。
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引用次数: 2
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acta ethologica
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