MANIPULATION OF FOOD RESOURCES BY A GALL-FORMING APHID - THE PHYSIOLOGY OF SINK-SOURCE INTERACTIONS
MANIPULATION OF FOOD RESOURCES BY A GALL-FORMING APHID - THE PHYSIOLOGY OF SINK-SOURCE INTERACTIONS
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DOI：
10.1007/bf00328398
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发表时间：
1991-01-01
期刊：
影响因子：
2.7
通讯作者：
WHITHAM, TG
中科院分区：
文献类型：
--
作者：
LARSON, KC;WHITHAM, TG
我们研究的能力，瘿蚜，甜菜天疱疮，操纵其主机，窄叶棉木材（胡杨）的库源易位模式。 一系列的C-14标记实验和生物量分配实验表明，甜菜夜蛾虫瘿具有生理汇的功能，从周围的植物资源中汲取资源。 早期的虫瘿发育依赖于蚜虫汇增加分配从存储储备的干，和以后的发展的后代内的虫瘿是依赖于资源的虫瘿叶片和从邻近的叶子。 无论虫瘿在叶片内的位置，蚜虫拦截C-14出口的虫瘿叶（非动员来源）。 然而，只有蚜虫虫瘿在最基础的网站的叶子是强大的汇C-14固定在邻近的叶子（动员源）。 从邻近的叶子中吸取资源代表了草食动物对正常宿主运输模式的积极操纵。 蚜虫积累的C-14有29%是由邻叶提供的，而只有7%的C-14是由邻叶提供的。 这种额外的资源可用于蚜虫在基瘿可以占65%的后代增加基瘿相比，虫瘿位于更远的叶和有限的虫瘿叶作为食物资源。 发育中的果实也充当着汇，与蚜虫诱导的汇竞争食物供应。 蚜虫成功生产虫瘿增加31%时，周围的女性柔荑被删除。
We examined the capacity of the galling aphid, Pemphigus betae, to manipulate the sink-source translocation patterns of its host, narrowleaf cotton-wood (Populus angustifolia). A series of C-14-labeling experiments and a biomass allocation experiment showed that P. betae galls functioned as physiologic sinks, drawing in resources from surrounding plant sources. Early gall development was dependent on aphid sinks increasing allocation from storage reserves of the stem, and later development of the progeny within the gall was dependent on resources from the galled leaf blade and from neighboring leaves. Regardless of gall position within a leaf, aphids intercepted C-14 exported from the galled leaf (a non-mobilized source). However, only aphid galls at the most basal site of the leaf were strong sinks for C-14 fixed in neighboring leaves (a mobilized source). Drawing resources from neighboring leaves represents active herbivore manipulation of normal host transport patterns. Neighboring leaves supplied 29% of the C-14 accumulating in aphids in basal galls, while only supplying 7% to aphids in distal galls. This additional resource available to aphids in basal galls can account for the 65% increase in progeny produced in basal galls compared to galls located more distally on the leaf and limited to the galled leaf as a food resource. Developing fruits also act as sinks and compete with aphid-induced sinks for food supply. Aphid success in producing galls was increased 31% when surrounding female catkins were removed.