Resource partitioning between kit foxes (Vulpes macrotis) and coyotes (Canis latrans): a comparison of historical and contemporary dietary overlap
Resource partitioning between kit foxes (Vulpes macrotis) and coyotes (Canis latrans): a comparison of historical and contemporary dietary overlap
复制标题
套件狐狸（Vulpes Macrotis）和土狼（Canis latrans）之间的资源分配：历史和当代饮食重叠的比较
DOI：
--
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
L. Waits
中科院分区：
文献类型：
--
作者：
Paige A. Byerly;Robert C. Lonsinger;E. Gese;Adam J. Kozlowski;L. Waits
通才的范围扩张可以改变群落，并对本地物种造成竞争压力。在美国的大盆地沙漠，土狼（Canis latrans Say，1823年）已经殖民化，现在与当地的大狐猴（Vulpes macrotis梅里亚姆，1888年）同域。由于这两个物种有相似的饮食，饮食分区可能有利于共存。我们分析了郊狼和狐狸的饮食，然后将我们的结果与早期的研究进行了比较。由于种群是动态的，我们预计猎物的减少或捕食者丰度的增加可能会改变饮食模式。我们发现，在人口水平的猎物多样性套件狐狸或郊狼没有显着的变化，和高水平的物种之间的饮食重叠。我们确实发现了显着下降的相对重要性leporids（家庭Leporidae费舍尔，1817年）在犬科动物的饮食，但他们仍然很重要的郊狼。小型哺乳动物的相对重要性对赤狐比郊狼大，但它们的重要性没有改变。
Range expansions by generalists can alter communities and introduce competitive pressures on native species. In the Great Basin Desert, USA, coyotes ( Canis latrans Say, 1823) have colonized and are now sympatric with native kit foxes ( Vulpes macrotis Merriam, 1888). Since both species have similar diets, dietary partitioning may facilitate coexistence. We analyzed coyote and kit fox diets, then compared our results to an earlier study. Because populations are dynamic, we expected that decreases in prey or increases in predator abundance could alter dietary patterns. We found no significant changes in population-level prey diversity for kit foxes or coyotes, and high levels of dietary overlap between species. We did detect a significant decrease in the relative importance of leporids (family Leporidae Fischer, 1817) in both canid’s diets, but they remained important for coyotes. The relative importance of small mammals was greater for kit foxes than coyotes, but their importance had not chang...