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foraging behavior of the Greater White-fronted Goose(Anser albifrons) wintering at Shengjin Lake: diet shifts and habitat use

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Avian Research 2020年第1期11卷 65-73页

作者： Yanguang Fan Lizhi Zhou Lei Cheng Yunwei Song Wenbin Xu School of Resources and Environmental Engineering Anhui UniversityHefei 230601China Anhui Province Key Laboratory of Wetland Ecosystem Protection and Restoration(Anhui University) Hefei 230601China Anhui Shengjin Lake National Nature Reserve Dongzhi 247200China

Background: The habitat use and foraging behaviors of waterbirds are closely related to the distribution and abundance of their food resources. Reductions in food supply can cause waterbirds to shift their habitats and adjust their foraging behaviors to meet their nutritional requirements and increase fitness. Seasonal withdraw of the water levels in the river-connected lakes in the middle and lower Yangtze River floodplain provides abundant food resources for the wintering Greater White-fronted Goose(Anser albifrons). Sedge(Carex) meadows are critical foraging habitats for herbivorous waterbirds in the hydro-fluctuation belt, which changes with hydrological conditions and climate. This study aimed to examine the behavioral responses of the Greater White-fronted Goose to temporal-spatial changes of food availability in the Sedge ***: Fields surveys were carried out at Shengjin Lake from November 2017 to April 2018. According to the phenology of Shengjin Lake, we divided the wintering season into three periods. The food density, minimum temperature, food items, grass height, and number of foraging geese were surveyed, and samples of the foraging behavior were collected. We analyzed the relationship of the foraging behavior and habitat use relative to the food resources, using correlation and linear regression ***: Along with the temporal-spatial variation and exploitation of food resources, the food abundance and items varied widely among the foraging sites. Over the whole wintering period, the foraging habitat with the highest utilization rate was the meadows, followed by the paddy fields, and then mudflats. Furthermore, the utilization of the meadows showed a bimodal distribution trend, while the paddy fields showed a unimodal trend, and a decreasing trend was seen in the mudflats over the whole wintering period. The results of the generalized linear model showed that the foraging rate was related to the food density and grass height, with

关键词： foraging behavior foraging rate Food resources Grass height Habitat use

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foraging, feeding, and physiological stress responses of wild wood mice to increased illumination and common genet cues

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Current Zoology 2018年第4期64卷 409-417页

作者： Alvaro NAVARRO-CASTILLA Isabel BARJA Mario DíAZ Department of Biology Faculty of Sciences Universidad Autónoma de Madrid C/Darwin 2 Campus Universitario de Cantolanco Madrid 28049 Spain Department of Biogeography and Global Change Museo Nacional de Ciencias Naturales CSIC Madrid 28006 Spain

In nature, animals are exposed to a broad range of threats imposed by predators, which may strongly influence the ecology of prey species directly or indirectly by affecting their behavior via fear of predation. Here, we studied wood mice Apodemus sylvaticus behavioral and physiological responses to simulated predation risk. Risk avoidance was analyzed by live trapping with control traps and traps treated with feces of common genet Genetta genetta （direct cue of risk） under new moon nights and following by simulated full moon conditions （indirect cue）. The time devoted to foraging behavior and capture time were analyzed by video recording mice activity around traps. Food intake was calculated based on the amount of bait remaining in each trap. Fecal cortico- sterone metabolites （FCMs） were measured by enzyme-immunoassay as indicators of physio- logical stress responses. Fewer wood mice were captured during full moon, yet only non-breeding adult males clearly avoided common genet odor. Mice were captured sooner at night during the simulated full moon conditions and later in predator-treated traps. foraging activity was lower when individuals faced predator＇s feces, but neither food intake nor FCM levels were affected by predation risk cues. Direct and indirect cues of predation risk selectively affected wood mice behavior, although behavioral responses seem to be modulated by different costs-benefit balances related to the individual＇s perception of risk. The lack of physiological responses to predation risk cues suggests that wood mice did not perceive them as reliable stressors or the response was too small or transient to be measured by FCM.

关键词： common genet fecal predator cues feeding foraging moonlight predator avoidance

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foraging habitat selection of overwintering Black-necked Cranes in the farming area surrounding the Caohai Wetland, Guizhou Province, China

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Avian Research 2020年第1期11卷 74-82页

作者： Dawei Wu Canshi Hu Mingming Zhang Zhumei Li Haijun Su Forestry College Guizhou UniversityGuizhou 550025China Research Center for Biodiversity and Natural Conservation Guizhou UniversityGuizhou 550025China College of Life Sciences Guizhou UniversityGuizhou 550025China Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region(Guizhou University) Ministry of EducationGuizhou 550025China Guizhou Institute of Biology Guizhou 550005China

Background: Understanding how overwintering birds choose foraging habitats is very important for conservation management. The overwintering Black-necked Crane(Grus nigricollis) feeds on crop remains in farmlands;thus, reasonable conservation management of this type of farmland that surrounds wetlands is critical for the overwintering populations of the Black-necked Crane;however, it is not clear how the Black-necked Crane chooses the foraging land in the ***: A thorough field positioning survey of all foraging sites in farmland areas around the Caohai Wetland and a-sampling analysis of habitat selection by the Black-necked Crane were conducted during the winters from 20162017 and ***: Multiple factors contributed to the selection of foraging habitat in farmlands, i.e., food factors(crop remains and tillage methods) > human disturbance factors(distance to road and settlement) > topography factors(slope aspect), listed according to the strength of influence. Additionally, Black-necked Cranes tend to choose farmland sites where there was no machine tillage, the crop remains were > 500 g/m^2, the distance to residences ranged from 100 to 500 m, the distance to roads ranged from 50 to 100 m, and the slopes exhibited western or eastern aspects. As the winters progressed, the volume of the edible crop remains declined, and the influences of the other main factors also changed, i.e., the factors of human disturbance(distance to road and settlement) became less important, while the effect of the food factor(crop remains) was strengthened. Thus, the foraging sites near the road became more ***: The farming area surrounding the Caohai Wetland is very important for the overwintering Black-necked Crane. Food factors and human disturbance factors are the main factors that influence the choice of feeding ground.

关键词： Black-necked Crane Caohai wetland in Guizhou Farmland around the wetland foraging habitat selection Overwintering period

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foraging technique and prey-handling time in black-necked stork(Ephippiorhynchus asiaticus)

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Integrative Zoology 2008年第4期3卷 274-279页

作者： Gopinathan MAHESWARAN Asad R.RAHMANI Department of Wildlife Sciences Aligarh Muslim UniversityAligarhIndia

The foraging technique and prey-handling time of the black-necked stork(Ephippiorhynchus asiaticus)was stud-ied in Dudhwa National Park,India,from January 1996 to June *** habitat in which the storks foraged played an important role in selecting a particular technique to procure ***-necked storks mostly foraged using a tactile technique(>90%),but sometimes foraged *** the water level was estimated to be less than 60 cm,the storks foraged using tactile *** was no difference in the feeding techniques of male and female *** attempt rates varied between the sexes in summer(May)and during late winter(February)in *** search time for prey increased when the water level was high and fish were widely *** in water level resulted in concentration of fish in certain areas and this contributed to high fish-catching rates by black-necked *** had a higher success rate of fish capture than ***,females captured longer fish than ***-handling time increased in both sexes as fish length *** 4–6 cm long were most frequently taken by the foraging storks.

关键词： black-necked stork Ephippiorhynchus asiaticus foraging India prey-handling time.

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Effects of variation in food resources on foraging habitat use by wintering Hooded Cranes(Grus monacha)

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Chinese Birds 2015年第3期6卷 186-195页

作者： Meng Zheng Lizhi Zhou Niannian Zhao Wenbin Xu School of Resources and Environmental Engineering Anhui University Institute of Biodiversity and Wetland Ecology Anhui University Anhui Biodiversity Information Center Shengjin Lake National Nature Reserve of Anhui Province

Background:The ideal habitat use of waterbirds can be considered to be fixed,but current habitat use depends on environmental conditions,especially those of food characteristics,considered crucial to their use of *** how waterbirds respond to variation in food availability at degraded wetland sites and change their habitat use patterns over spatial and temporal scales should direct future conservation *** objectives of this study were to identify these spatial-temporal foraging habitat use patterns of Hooded Cranes(Grus monacha)and their relationship with food characteristics in the severely degraded wetlands of the Shengjin and Caizi lakes along with the Yangtze River ***:We investigated the changes in food characteristics,relative abundance and density of Hooded Cranes in various habitat types across three winter periods from November 2012 to April *** examined the effect of these winter periods and habitat types on the pattern of use by the cranes and explored the relationship between these patterns and food characteristics using linear ***:The food characteristics and habitat use clearly changed over spatial-temporal *** the early and mid-winter periods,the most abundant,accessible and frequented food resources were found in paddy fields,while in the late period the more abundant food were available in meadows,which then replaced the paddy *** were fewer effects of winter periods,habitat types and their interactions on habitat use patterns except for the effect of habitat types on the relative abundance,determined as a function of food abundance,but independent of food depth and sediment ***:In response to the degradation and loss of lake wetlands,the cranes shifted their habitat use patterns by making tradeoffs between food abundance and accessibility over spatial-temporal scales that facilitated their survival in the mosaic of these lake wetlands.

关键词： Hooded Crane(Grus monacha) Habitat use Food characteristics Wintering ecology foraging habitat

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Unmanned Aerial Vehicle Formation Inspired by Bird Flocking and foraging Behavior

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International Journal of Automation and computing 2018年第4期15卷 402-416页

作者： Tian-Jie Zhang Beijing University of Aeronautics and Astronautics Beijing 100191China

This paper considers a multiple unmanned aerial vehicles （UAV） formation problem and proposes a new method inspired by bird flocking and foraging behavior. A bidirectional communication network, a navigator based on bird foraging behavior, a controller based on bird interaction and a movement switch are developed for multi-UAV formation. Lyapunov＇s second method and mechanical energy method are adopted for stability analysis. Parameters of the controller are optimized by Levy-flight based pigeon inspired optimization （Levy-PIO）. Patrol missions along a square and an S shaped trajectory are designed to test this formation method. Simula- tions prove that the bird flocking and foraging strategy can accomplish the mission and obtain satisfying performance.

关键词： Unmanned aerial vehicle(UAV) formation bird flocking foraging pigeon-inspired optimization Levy-flight.

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An exploration of the relationship between recruitment communication and foraging in stingless bees

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Current Zoology 2021年第5期67卷 551-560页

作者： Robbie I’ANSON PRICE Francisca SEGERS Amelia BERGER Fabio S.NASCIMENTO Christoph GRUTER Department of Ecology and Evolution University of LausanneLausanne 1015Switzerland Swiss Centre for Affective Sciences University of GenevaGene`ve 1201Switzerland Department for Applied Bioinformatics Institute of Cell Biology and NeuroscienceGoethe UniversityFrankfurt 60438Germany Departamento de Biologia Faculdade de FilosofiaCiencias e Letras de Ribeirao PretoUniversidade de Sao PauloRibeirao PretoSao Paulo CEP 14040-901Brazil School of Biological Sciences University of Bristol24 Tyndall AvenueBristol BS81TQUK

Social information is widely used in the animal kingdom and can be highly *** social insects,foragers can use social information to find food,avoid danger,or choose a new nest *** others allows individuals to obtain information without having to sample the *** foragers communicate information they will often only advertise high-quality food sources,thereby filtering out less adaptive *** bees,a large pantropical group of highly eusocial bees,face intense inter-and intra-specific competition for limited resources,yet display disparate foraging *** the same environment there are species that communicate the location of food resources to nest-mates and species that do *** current understanding of why some species communicate foraging sites while others do not is *** freely foraging colonies of several co-existing stingless bee species in Brazil,we investigated if recruitment to specific food locations is linked to 1)the sugar content of forage,2)the duration of foraging trips,and 3)the variation in activity of a colony from 1 day to another and the variation in activity in a species over a *** found that,contrary to our expectations,species with recruitment communication did not return with higher quality forage than species that do not recruit ***,foragers from recruiting species did not have shorter foraging trip durations than those from weakly recruiting *** the intense inter-and intraspecific competition for resources in these environments,it may be that recruiting species favor food resources that can be monopolized by the colony rather than food sources that offer high-quality rewards.

关键词： communication foraging social information stingless bee

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Social vocalizations of big-footed myotis(Myotis macrodactylus)during foraging

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Integrative Zoology 2019年第5期14卷 446-459页

作者： Dongge GUO Bo LUO Kangkang ZHANG Muxun LIU Walter METZNER Ying LIU Jiang FENG Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization Northeast Normal UniversityChangchunChina Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of Education China West Normal UniversityNanchongChina Department of Integrative Biology&Physiology University of CaliforniaLos AngelesCaliforniaUSA College of Animal Science and Technology Jilin Agricultural UniversityChangchunChina

Acoustic signals play a crucial role in transmitting information and maintaining social stability in gregarious animals,especially in echolocating bats,which rely primarily on biological sonar for navigating in the *** the context of foraging without relying on tactile,visual or olfactory cues,acoustic signals convey information not only on food but also on ownership and defense of ***,studies on such information remain *** the present study,we aim to document the social vocal repertoire of Myotis macrodactylus at natural foraging *** acoustic analyses and spectrographic classification revealed a rich foraging vocal repertoire comprising 6 simple syllables and 2 *** function analyses associated with a subset-validation procedure provided an optimal method to spectrographically classify all recorded sounds into different syllable *** scaling of median values of multiple parameters further confirmed notable differences among these syllables in a 3-D *** addition,Euclidean distance analysis showed that there were some spectral similarities between specific social vocal syllables and feeding buzzes,which implied a potential jamming ***,the data indicate that bats at foraging sites under natural conditions used variant social vocalizations with different functions in addition to echolocation calls,providing supporting evidence for further work on the function and vocal mechanisms of acoustic communication in mammals.

关键词： bats foraging social calls spectro-temporal features

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Free-ranging dogs match a human’s preference in a foraging task

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Current Zoology 2024年第3期70卷 343-349页

作者： Giulia Cimarelli Magdelena Juskaite Friederike Range Sarah Marshall-Pescini Domestication Lab Konrad Lorenz Institute of EthologyDepartment of Interdisciplinary Life SciencesUniversity of Veterinary Medicine ViennaVeterinärplatz 11210ViennaAustria Department of Biology Education Stockholm UniversityStockholmSweden

Social learning is a mechanism used by many species to effciently gain information about their *** many animals live in an environment where members of other species are present,little is known about interspecifc social *** and urbanized species provide the opportunity to investigate whether nonhuman animals can learn from heterospecifcs such as humans,who are integral parts of their social *** domestic dogs Canis familiaris have been intensively researched for their ability to learn from humans,most studies have focused on dogs living as ***,free-ranging dogs represent the majority of the world’s dog population,they live alongside humans,scavenge on human refuse,and are subject to natural and sexual ***,free-ranging dogs with extensive exposure to humans and their artifacts provide the opportunity to investigate interspecifc social learning in a naturalistic setting,where learning from humans might be a beneft for *** we tested individual free-ranging dogs in a between-subject design:Dogs in the control group could spontaneously choose between two novel and differently patterned food-delivering *** the experimental group,instead,dogs could frst observe an unfamiliar human approaching and eating from 1 of the 2 *** provide the frst evidence that free-ranging dogs match the choice of an unfamiliar *** results show that at least simple forms of interspecifc social learning might be involved in dogs’success in living alongside humans in a complex urbanized environment.

关键词： Canis familiaris dogs domestication foraging free-ranging dogs social learning urbanization.

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Joint effects of weather and interspecific competition on foraging behavior and survival of a mountain herbivore

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Current Zoology 2019年第2期65卷 165-175页

作者： Francesco FERRETTI Sandro LOVARI Philip A. STEPHENS Research Unit of Behavioural Ecology Ethology and Wildlife Management Department of Life Sciences University of Siena Via P.A. Mattioli 4 53100 Siena Italy Conservation Ecology Group Department of Biosciences Durham University South Road Durham DH1 3LE UK Maremma Natural History Museum Strada Corsini 5 58100 Grosseto Italy

Weather variations have the potential to in fluence species interactions, although effects on competitive interactions between species are poorly known. Both weather and competition can influence foraging behavior and survival of herbivores during nursing/weaning, a critical period in the herbivore life cycle. We evaluated the joint effects of weather and competition with red deer Cervus elaphus on the foraging behavior of adult female Apen nine chamois Rupicapra pyrenaica ornata in summer, and on winter survival of chamois kids. High temperature and low rainfall during the growing seas on of vegetation had negative effects on bite rate. Effects of weather were greater in forb patches, including cold-adapted, nutritious plants of key importanee to chamois, than in graminoid ones. Our results confirm previous indications of a negative effect of competition on bite rate of female chamois and on kid survival. Furthermore, harsh weather conditions and competition with deer had additive, negative roles on foraging behavior and survival of chamois. Growing temperatures are expected to influence distribution, growth, and/or nutritional quality of plants;competition would reduce pasture quality and food availability through resource depletion. Both factors would limit food/energy intake rates during summer, reducing survival of the youngest cohorts in winter. We suggest that interspecific competition can be an important additive factor to the effects of weather changes on behavior and demography.

关键词： chamois foraging behavior global changes interspecific interactions resource exploitation ungulates

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