Seed traits and taxonomic relationships determine the occurrence of mutualisms versus seed predation in a tropical forest rodent and seed dispersal system.
Seed traits and taxonomic relationships determine the occurrence of mutualisms versus seed predation in a tropical forest rodent and seed dispersal system.
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种子性状和分类关系决定了热带森林啮齿动物和种子传播系统中互利共生与种子捕食的发生。
DOI：
10.1111/1749-4877.12086
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发表时间：
2014-06
期刊：
影响因子：
--
通讯作者：
Zhang ZB
中科院分区：
文献类型：
--
作者：
Wang ZY;Cao L;Zhang ZB
虽然许多研究已经进行了植物-动物互惠组合，功能性状和分类学的作用，在确定双方的相互作用是否涉及互惠或捕食和这种组合的结构是不清楚的。采用半自然围隔法，对西双版纳热带森林中8种同域树种和4种啮齿动物的种子相互作用强度进行了定量研究。在种子-啮齿动物网络中，我们发现了2个类群，分别代表壳斗科的2个属（锥属、柯属）。与3种栲属植物种子相比，重、硬壳或含热量高的种子（包括3种柯属植物）被啮齿动物取食较少，贮藏频率较高。反过来，囤积的种子表现出更少的捕食和更多的与啮齿动物的互利共生。我们的研究结果表明，种子性状显着影响啮齿动物的囤积行为，并因此，互惠和捕食的发生，以及在植物-动物种子传播系统的聚集结构。具有相似种子性状功能群的分类学上相关的种在组合中属于相同的亚结构。我们的研究结果表明，种子性状和分类关系可以简化思考种子传播系统，有助于阐明是否相互作用可能是由捕食或互利共生为主。
Although many studies have been carried out on plant-animal mutualistic assemblages, the roles of functional traits and taxonomy in determining both whether interactions involve mutualisms or predation and the structure of such assemblages are unclear. We used semi-natural enclosures to quantitatively assess the interaction strengths between seeds of 8 sympatric tree species and 4 rodent species in a tropical forest in Xishuangbanna, Yunnan, Southwest China. We found 2 clusters of species in the seed-rodent network represented by 2 genera in the Fagaceae (Castanopsis, Lithocarpus). Compared to seeds of 3 Castanopsis species, seeds with heavy weight, hard coat or caloric content (including 3 Lithocarpus species) were eaten less and more frequently hoarded by rodents. In turn, hoarded seeds showed less predation and more mutualism with rodents. Our results suggest that seed traits significantly affected the hoarding behavior of rodents, and, consequently, the occurrence of mutualisms and predation as well as assemblage structure in the plant-animal seed dispersal system. Taxonomically-related species with similar seed traits as functional groups belong to the same substructures in the assemblage. Our results indicate that both seed traits and taxonomic relationships may simplify thinking about seed dispersal systems by helping to elucidate whether interactions are likely to be dominated by predation or mutualism.
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影响因子：
2.7
作者：
Gomez, Jose M.;Puerta-Pinero, Carolina;Schupp, Eugene W.
通讯作者：
Schupp, Eugene W.
影响因子：
3.1
作者：
Gerber, LR;Reichman, OJ;Roughgarden, J
通讯作者：
Roughgarden, J
影响因子：
8.8
作者：
Guimaraes, Paulo R., Jr.;Jordano, Pedro;Thompson, John N.
通讯作者：
Thompson, John N.
影响因子：
2.5
作者：
Zhishu Xiao;Gang Chang;Zhibin Zhang
通讯作者：
Zhishu Xiao;Gang Chang;Zhibin Zhang
DOI：
10.1086/639595
发表时间：
1997-05-01
期刊：
PHYSIOLOGICAL ZOOLOGY
影响因子：
--
作者：
ChungMacCoubrey, AL;Hagerman, AE;Kirkpatrick, RL
通讯作者：
Kirkpatrick, RL