Sharing fruit of Treculia africana among western gorillas in the Moukalaba-Doudou National Park, Gabon: Preliminary report
Sharing fruit of Treculia africana among western gorillas in the Moukalaba-Doudou National Park, Gabon: Preliminary report
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加蓬穆卡拉巴-杜杜国家公园的西部大猩猩分享非洲特雷库利亚的果实：初步报告
DOI：
10.1007/s10329-014-0433-3
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发表时间：
2015
期刊：
影响因子：
1.7
通讯作者：
Ando C
中科院分区：
文献类型：
--
作者：
Yamagiwa J;Tsubokawa K;Inoue E;Ando C
我们报告了加蓬穆卡拉巴-杜杜国家公园观察到的前 18 例西部低地大猩猩（大猩猩）之间转移水果（Treculia africana）的案例。果实转移发生在我们2010年和2013年对一组习惯性大猩猩进行观察时。果实碎片在成年大猩猩和未成熟大猩猩之间转移，其中三起案件涉及一只雄性银背大猩猩。一旦有人捡起了掉落的非洲树树果实，该群体的其他成员就会接近拥有者，后者将果实碎片放在附近并容忍其他人得到它们。在拥有者和非拥有者之间很少观察到竞争性相互作用。只有雄性银背大猩猩似乎迫使另一只亚成年雄性大猩猩放弃地上的水果。他容忍一名成年雌性将一块水果放在他的腿上，并在接下来的几天里与她交配。从这些初步观察来看，穆卡拉巴的西部大猩猩之间对非洲树雀果实的大多数互动并不是所有者的主动转移，而是可能是被动分享。它们不仅被解释为幼兽获得觅食技能的一种手段（Nowell and Fletcher 2006），而且与在各种社会背景下观察到的黑猩猩和倭黑猩猩的行为相似。
We report the first 18 observed cases of fruit (Treculia africana) transfer among western lowland gorillas (Gorilla gorilla gorilla) in Moukalaba-Doudou National Park, Gabon. The fruit transfer occurred during our observations of a habituated group of gorillas in 2010 and 2013. Pieces of the fruits were transferred among adults and immatures, and three cases involved a silverback male. Once an individual picked up a fallen fruit ofTreculia africana, other members of the group approached the possessor, who laid pieces of the fruits nearby and tolerated the others getting them. Agonistic interaction was rarely observed between the possessor and the non-possessor. Only the silverback male seemed to force another gorilla, a subadult male, to relinquish the fruit on the ground. He tolerated an adult female taking a piece of fruit on his leg and copulated with her on the following days. From these preliminary observations, most interactions over the fruit ofTreculia africanaamong western gorillas in Moukalaba were not active transfer by the possessor but probably passive sharing. They were not only interpreted as a means of acquiring foraging skills by immatures (Nowell and Fletcher 2006) but also similar to behaviors observed in chimpanzees and bonobos in various social contexts.