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Cannibalism in bears
ID Allen, Maximilian L. (Avtor), ID Krofel, Miha (Avtor), ID Yamazaki, Koji (Avtor), ID Emmarie P., Alexander (Avtor), ID Koike, Shinsuke (Avtor)

URLURL - Izvorni URL, za dostop obiščite https://bioone.org/journals/ursus/volume-2022/issue-33e10/URSUS-D-20-00031.2/Cannibalism-in-bears/10.2192/URSUS-D-20-00031.2.short Povezava se odpre v novem oknu
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Izvleček
Bears are the largest terrestrial carnivores, and most bear species can be characterized as opportunistic omnivores. An infrequent foraging tactic for bears is cannibalism, where a bear consumes a conspecific individual, either through scavenging or following intraspecific predation. Although several reports of cannibalism events are known, no attempt has been made so far to gather the available information to analyze for general patterns. We therefore performed a systematic literature review to understand patterns of cannibalism in bears. We documented 39 studies detailing 198 cannibalism events. We only found evidence of cannibalism in 4 of the 8 bear species, with more events reported for polar bears (Ursus maritimus; n = 107, 54.0%) than for all other species combined. Cannibalism was most frequently associated with infanticide (n = 66, 33.3%) and conspecific strife (n = 30, 15.2%), both of which were more frequent among males than females. The most common apparent reason for cannibalism among predators is to increase fitness (i.e., eating a conspecific increases nutrition, whereas killing reduces competition for resources), but is also often linked to sexually selected infanticide in bears. Cannibalism most often appears to be an opportunistic consumption of an available carcass and not directly connected with the primary cause of death. As such, cannibalism in bears may be more casual and opportunistic than a behavior that evolved as a life history strategy.

Jezik:Angleški jezik
Ključne besede:bear, animal behavior, cannibalism, foraging ecology, infanticide, mortality, nutritional ecology, predation, scavenging, sexually selected infanticide
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Datum objave:12.07.2022
Leto izida:2022
Št. strani:9 str.
Številčenje:Vol. 33, e. 10
PID:20.500.12556/RUL-138257 Povezava se odpre v novem oknu
UDK:630*15
ISSN pri članku:1938-5439
DOI:10.2192/URSUS-D-20-00031.2 Povezava se odpre v novem oknu
COBISS.SI-ID:115180547 Povezava se odpre v novem oknu
Datum objave v RUL:13.07.2022
Število ogledov:511
Število prenosov:45
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Ursus
Skrajšan naslov:Ursus
Založnik:International Association for Bear Research and Management
ISSN:1938-5439
COBISS.SI-ID:518419481 Povezava se odpre v novem oknu

Licence

Licenca:UND, Copyright Undetermined
Povezava:http://rightsstatements.org/vocab/UND/1.0/
Opis:Avtorskopravni status teh predmetov ni znan.
Začetek licenciranja:13.07.2022

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:medvedi, vedenje, kanibalizem, prehranjevanje, infanticid, smrtnost, plenjenje, mrhovinarstvo

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P4-0059-2020
Naslov:Gozd, gozdarstvo in obnovljivi gozdni viri

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