Article
Ecology
Hiroto Yoshimura, Satoshi Hirata, Kodzue Kinoshita
Summary: This study evaluated the frequency of plant occurrence in scat and stomach contents in 24 felid species and found a significant negative relationship with body mass. This suggests that plant-eating behavior may reduce energy loss caused by parasites, particularly in smaller animals with high metabolic rates.
ECOLOGY AND EVOLUTION
(2021)
Article
Biology
Louise C. Allen, Nickolay Hristov, Juliette J. Rubin, Joseph T. Lightsey, Jesse R. Barber
Summary: Environmental noise disrupts hunting behavior by distracting animals' attention or overlapping the frequency of prey cues. Experimental results show that exposure to noise leads to a 50% decrease in successful prey localization, a nearly tripled search time, and a 25% increase in sonar pulses used by bats.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Multidisciplinary Sciences
Andrea F. Vallejo-Vargas, Douglas Sheil, Asuncion Semper-Pascual, Lydia Beaudrot, Jorge A. Ahumada, Emmanuel Akampurira, Robert Bitariho, Santiago Espinosa, Vittoria Estienne, Patrick A. Jansen, Charles Kayijamahe, Emanuel H. Martin, Marcela Guimaraes Moreira Lima, Badru Mugerwa, Francesco Rovero, Julia Salvador, Fernanda Santos, Wilson Roberto Spironello, Eustrate Uzabaho, Richard Bischof
Summary: This study examines the diel activity patterns of tropical mammals in protected forests across different biogeographic regions. The findings suggest that the activity of herbivores and insectivores is constrained by thermoregulation, while the activity of carnivores is influenced by bottom-up processes and the activity of small omnivores and insectivores is regulated by top-down processes. Overall, diel activity in tropical mammal communities is shaped by similar processes and constraints, reflecting body mass and trophic guilds.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ildiko Benedek, Tamas Molnar
Summary: The study investigates the prey size preference of wild pikeperch and suggests using a predator-prey length ratio (PPR) of 0.11-0.22 in foraging training, which is smaller than the optimal PPR for wild individuals.
APPLIED SCIENCES-BASEL
(2023)
Review
Ecology
Christina M. Prokopenko, Tal Avgar, Adam Ford, Eric Vander Wal
Summary: Foragers must consider the costs and gains in their pursuit of food. By integrating foraging costs into functional responses, we added mechanism and precision to foundational ideas. Through a model system, we found that the density and antipredator traits of costly prey can influence the energy gain rate of predators, leading to a stabilizing Type III functional response. We provide testable predictions and guidance for applying optimal foraging theory to scenarios with varying predator foraging costs.
Article
Multidisciplinary Sciences
G. J. Sutton, J. P. Y. Arnould
Summary: Quantifying prey characteristics is important for understanding predator foraging behavior. In this study, animal-borne video data loggers were used to investigate the foraging behavior of little penguins in southeastern Australia. The results suggest that prey type and patch density influence foraging behavior, while breeding season constraints impact foraging trip distance and duration.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Multidisciplinary Sciences
Briana Abrahms, Kasim Rafiq, Neil R. Jordan, J. W. McNutt
Summary: Understanding how animals adjust their physiological processes to track optimal conditions in response to climate change is crucial for predicting ecological responses. A study on endangered African wild dogs found that their birthing time has been delayed by 7 days per decade in response to long-term warming, leading to temperature changes in their reproductive process.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Lachlan R. Phillips, Gemma Carroll, Ian Jonsen, Robert Harcourt, Andrew S. Brierley, Adam Wilkins, Martin Cox
Summary: Understanding how marine predators encounter prey across patchy landscapes remains challenging. This study used GPS and dive loggers to measure the at-sea behavior of little penguins and assessed the prey field through boat-based acoustic surveys. The results showed that penguin tracks had higher prey encounter rates compared to random movements, but reductions in prey encounters and abnormal body mass were observed when prey was sparse or deep.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Multidisciplinary Sciences
Sam B. Weber, Andrew J. Richardson, Judith Brown, Mark Bolton, Bethany L. Clark, Brendan J. Godley, Eliza Leat, Steffen Oppel, Laura Shearer, Karline E. R. Soetaert, Nicola Weber, Annette C. Broderick
Summary: Research shows that pelagic seabirds breeding on tropical islands can deplete their primary prey species over a considerable area, a phenomenon known as "Ashmole's halo". The study results suggest that the gradient of prey depletion by seabirds is mirrored by an opposing trend in their foraging effort, which is not influenced by environmental factors and can be approximated by a model.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Review
Ecology
Jeremy A. Goldbogen, Nicholas D. Pyenson, Peter T. Madsen
Summary: Whales are an exceptional subject for studying ecology and evolution due to their extraordinary body sizes and unique foraging strategies, which are unparalleled in the animal kingdom. Toothed whales have developed echolocation to hunt deep-sea fish and cephalopods, while baleen whales rely on bulk filter feeding to exploit abundant but ephemeral prey like krill or fish.
ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS
(2023)
Article
Biodiversity Conservation
Aimee Tallian, Andres Ordiz, Barbara Zimmermann, Hakan Sand, Camilla Wikenros, Petter Wabakken, Goran Bergqvist, Jonas Kindberg
Summary: Studying the effects of recovering wolf and bear populations on moose survival in Sweden revealed a negative correlation between wolf and bear densities and calf/cow ratios. In areas where wolves and bears were allopatric, calf/cow ratios decreased by 7% and 17%, while in sympatric areas, the decrease was 18%.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Behavioral Sciences
Wonbin Lim, Changku Kang
Summary: This study examines the function and adaptive significance of jerking behavior in Cyclosa argenteoalba orb-weaving spiders. The results show that spiders jerk more as prey size increases and spider size decreases. Jerks reduce the likelihood of prey escaping and increase the number of spiral threads contacting the prey. The efficiency of jerks is lower in larger prey, potentially due to spiders' cautiousness and reduced jerk efficiency towards larger prey. These findings highlight the importance of jerking behavior in prey capture for orb-weaving spiders.
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
(2022)
Article
Biology
Rowena P. Hamer, Riana Z. Gardiner, Kirstin M. Proft, Christopher N. Johnson, Menna E. Jones
Summary: Research has shown that alien mammalian carnivores, such as feral cats and red foxes, have disproportionately contributed to the global loss of biodiversity. In Australia, predation by these alien species poses a significant threat to native vertebrates. Feral cats, in particular, have greater impacts on prey compared to native predators due to their higher population densities, intense home-range use, and broad habitat preferences.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Ecology
Ellen M. Chenoweth, Kevin M. Boswell, Ari S. Friedlaender, Megan McPhee, Julia A. Burrows, Ron A. Heintz, Jan M. Straley
Summary: The study developed a process-based model to investigate the potential energetic benefits of in situ foraging opportunities in rorqual whales. Results showed that humpback whales feeding on hatchery-released juvenile salmon fell within the range of the potential energetic benefits for krill and herring, with species variation. The model also suggested that shallow feeding may play a more important role in reducing energy expenditure through slower lunge speeds.
FUNCTIONAL ECOLOGY
(2021)
Article
Biodiversity Conservation
Manjari Malviya, Ramesh Krishnamurthy
Summary: Understanding the factors associated with human/livestock-large carnivore conflict and predicting conflict risk are important for effective prevention and mitigation. This study used spatial modelling to analyze the ecological correlates of human-tiger conflict and predict livestock predation risk. The results showed that prey and shrub cover were key determinants of conflict, and the spatial risk map can guide conflict prevention measures.
GLOBAL ECOLOGY AND CONSERVATION
(2022)
Article
Behavioral Sciences
Stotra Chakrabarti, Yadvendradev V. Jhala
BEHAVIORAL ECOLOGY
(2019)
Review
Ecology
Yadvendradev V. Jhala, Kausik Banerjee, Stotra Chakrabarti, Parabita Basu, Kartikeya Singh, Chittaranjan Dave, Keshab Gogoi
FRONTIERS IN ECOLOGY AND EVOLUTION
(2019)
Article
Ecology
Dheeraj Mittal, Stotra Chakrabarti, Shailesh B. Khambda, Joseph K. Bump
Article
Multidisciplinary Sciences
Stotra Chakrabarti, Vishnupriya Kolipakam, Joseph K. Bump, Yadvendradev Jhala
SCIENTIFIC REPORTS
(2020)
Article
Multidisciplinary Sciences
Stotra Chakrabarti, Joseph K. Bump, Yadvendradev Jhala, Craig Packer
Summary: The study found that female lions tend to associate with males during feeding, but otherwise segregate from them. This behavior is influenced by factors such as prey size and availability, group size, and the number of prides each male coalition resides in.
Article
Ecology
Stotra Chakrabarti, Shawn T. O'Neil, John Erb, Carolin Humpal, Joseph K. Bump
Summary: The study evaluated the survival of wolves in Minnesota using Bayesian frailty analytical approach. The overall annual survival rate was 0.67, with a temporal trend in survival rates. Human causes were the major factors contributing to wolf mortality, including legal and illegal killing, and vehicular collisions. The results provide important information for guiding management policies for the Great Lakes wolf population.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Green & Sustainable Science & Technology
Arjun Srivathsa, Divya Vasudev, Tanaya Nair, Stotra Chakrabarti, Pranav Chanchani, Ruth DeFries, Arpit Deomurari, Sutirtha Dutta, Dipankar Ghose, Varun R. Goswami, Rajat Nayak, Amrita Neelakantan, Prachi Thatte, Srinivas Vaidyanathan, Madhu Verma, Jagdish Krishnaswamy, Mahesh Sankaran, Uma Ramakrishnan
Summary: Biodiversity conservation and human well-being are closely linked, but the mismatch in planning and implementing these priorities has led to biodiversity loss and declining quality of life. India, with a large population, has very little land effectively protected for conservation. Landscape-level conservation planning, combining land-sharing and land-sparing approaches, is necessary.
NATURE SUSTAINABILITY
(2023)
Editorial Material
Ecology
Stotra Chakrabarti, Camilla Wikenros, Bridget Borg, Yadvendradev Jhala, Joseph Bump
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Correction
Green & Sustainable Science & Technology
Arjun Srivathsa, Divya Vasudev, Tanaya Nair, Stotra Chakrabarti, Pranav Chanchani, Ruth DeFries, Arpit Deomurari, Sutirtha Dutta, Dipankar Ghose, Varun R. Goswami, Rajat Nayak, Amrita Neelakantan, Prachi Thatte, Srinivas Vaidyanathan, Madhu Verma, Jagdish Krishnaswamy, Mahesh Sankaran, Uma Ramakrishnan
NATURE SUSTAINABILITY
(2023)
Article
Ecology
Ellen M. Candler, Stotra Chakrabarti, William J. Severud, Joseph K. Bump
Summary: Recolonization of predators to their former ranges is becoming more common. We investigated the response of white-tailed deer populations with different levels of exposure to wolves to wolf olfactory cues. We found that habitat conditions influenced deer vigilance, rather than the presence of wolf olfactory cues.
ECOLOGY AND EVOLUTION
(2023)
Letter
Ecology
Joseph Bump, Thomas Gable, Sean Johnson-Bice, Austin Homkes, Danielle Freund, Steve Windels, Stotra Chakrabarti
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
(2022)
Article
Behavioral Sciences
Stotra Chakrabarti, Yadvendradev V. Jhala
BEHAVIORAL ECOLOGY
(2017)