No Association between 2D:4D Ratio and Hunting Success among Hadza Hunters

Human Nature ◽  
2019 ◽  
Vol 31 (1) ◽  
pp. 22-42
Author(s):  
Duncan N. E. Stibbard-Hawkes
Keyword(s):  
2015 ◽  
Vol 23 (1) ◽  
pp. 12-14 ◽  
Author(s):  
Ivan Sazima

Abstract Pygmy owls of the genus Glaucidium prey on large insect and small vertebrates, mostly birds. Among the birds preyed on by pygmy owls are hummingbirds, caught mostly while mobbing these owlets or when still at nestling stage. I report here on the Ferruginous Pygmy Owl (Glaucidium brasilianum) snatching flower-visiting hummingbirds in an orchard at a farm in southwestern Brazil. I recorded one White-tailed Goldenthroat (Polytmus guainumbi) and three Gilded Hummingbirds (Hylocharis chrysura) preyed on by this owlet on three consecutive days. The large concentration of flowers and, consequently, of hummingbirds in the orchard likely contributed to the hunting success of the owlet on such fleeting and quickly moving prey. The role this pygmy owl plays on predation of adult hummingbirds in the Neotropics merits closer consideration.


AMBIO ◽  
2021 ◽  
Author(s):  
Ingunn M. Tombre ◽  
Fredrik Fredriksen ◽  
Odd Jerpstad ◽  
Jan Eivind Østnes ◽  
Einar Eythórsson

AbstractImplementing management objectives may be challenging when decisions are made at different scales than where they are supposed to be carried out. In this study we present a situation where local goose hunting arrangements respond to objectives in an international management plan for pink-footed geese (Anser brachyrhynchus) and a local wish to reduce goose numbers as means to reduce grazing damage on farmland. A unique ten-year dataset provides an evaluation of the efficiency of voluntary actions at a local scale for implementing a policy of population control of geese, and general lessons are drawn for collaboration and co-production of knowledge for adaptive management. The study demonstrates how both the hunters and geese adapt in a situation where increasing the harvest of geese is the main objective. Introducing hunting-free days and safe foraging areas significantly increased goose numbers in the study area, with a corresponding increase in hunting success in terms of number of harvested geese. The geese’s behavioural response to hunting also triggered the hunters to adapt accordingly by optimal timing and placement in the landscape. Based on the results of the present study we suggest a framework for local implementation of management actions. Bringing end-users on board, facilitates processes and strengthens the achievements, as they represent the actors where implementation occurs. Specifically, our findings demonstrate how optimal goose hunting can be practiced by the use of an adaptive framework with active stakeholder participation.


1999 ◽  
Vol 4 (4) ◽  
pp. 456 ◽  
Author(s):  
Roger Woodard ◽  
Dongchu Sun ◽  
Zhuoqiong He ◽  
Steven L. Sheriff

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Dede Mulyanto ◽  
Oekan Soekotjo Abdoellah ◽  
Johan Iskandar ◽  
Budhi Gunawan

Abstract. Mulyanto D, Abdoellah OS, Iskandar J, Gunawan B. 2021. Ethnozoological study of the wild pig (Sus spp.) hunting among Sundanese in Upper Citarum Watershed area, West Java, Indonesia. Biodiversitas 22: 4930-4939. In the past, wild pigs had a high population in the rural ecosystem of West Java. However, the population of wild pigs, particularly Javan warty pig, decreases due to forest destructions and intensive hunting. This study aimed to elucidate the local knowledge on wild pigs, the mode of hunting, and diverse aspects of wild pig hunting. We conducted qualitative methods with ethnozoological approach, including participant observation and in-depth interview. The results showed that based on the local people the wild pig can be divided into four “races”, while based on zoology, two species of wild pig are documented in Java. During hunts all members get specific key roles. Thus, hunting success is increased by division of labor. Hunting wild pigs played an important role in socio-economic and cultural function for the village community. Due to intensive hunting of wild pigs, the population of these animals, particularly the Javan warty pig are decreased, and consequently the socio-economy of this animal in rural ecosystem may decrease ot even disappear.


Mammalia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Divyajyoti Ganguly ◽  
Tiasa Adhya

Abstract The fishing cat’s persistence in a ‘semi-aquatic niche’ suggests the evolution of a successful hunting strategy. We describe it for the first time by analysing 197 camera-trap video-clips, collected from a participatory-science initiative, within an ethogram framework. The cats spent ∼52% of the time sitting and waiting for prey (fishes) to come nearer and took limited attempts to hunt (3.89%) in deeper waters (in which the upper portions of the cat’s body were submerged), where its hunting success was found to be 42.86%. In shallow waters, it adopted a predominantly active mode of hunting (∼96%) to flush out prey.


2019 ◽  
Vol 57 (4) ◽  
pp. 586-594 ◽  
Author(s):  
Elizabeth F. R. Preston ◽  
Paul J. Johnson ◽  
David W. Macdonald ◽  
Andrew J. Loveridge
Keyword(s):  

2014 ◽  
Vol 10 (6) ◽  
pp. 20140281 ◽  
Author(s):  
Oona M. Lönnstedt ◽  
Maud C. O. Ferrari ◽  
Douglas P. Chivers

Despite considerable study, mystery surrounds the use of signals that initiate cooperative hunting in animals. Using a labyrinth test chamber, we examined whether a lionfish, Dendrochirus zebra , would initiate cooperative hunts with piscine partners. We found that D. zebra uses a stereotyped flared fin display to alert conspecific and heterospecific lionfish species Pterois antennata to the presence of prey. Per capita success rate was significantly higher for cooperative hunters when compared with solitary ones, with hunt responders assisting hunt initiators in cornering the prey using their large extended pectoral fins. The initiators would most often take the first strike at the group of prey, but both hunters would then alternate striking at the remaining prey. Results suggest that the cooperative communication signal may be characteristic to the lionfish family, as interspecific hunters were equally coordinated and successful as intraspecific hunters. Our findings emphasize the complexity of collaborative foraging behaviours in lionfish; the turn-taking in strikes suggests that individuals do not solely try to maximize their own hunting success: instead they equally share the resources between themselves. Communicative group hunting has enabled Pteroine fish to function as highly efficient predators.


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