Sex-related differences in alkaloid chemical defenses of the dendrobatid frog Oophaga pumilio from Cayo Nancy, Bocas del Toro, Panama.
Sex-related differences in alkaloid chemical defenses of the dendrobatid frog Oophaga pumilio from Cayo Nancy, Bocas del Toro, Panama.
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DOI：
10.1021/np900702d
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发表时间：
2010-03-26
影响因子：
5.1
通讯作者：
Spande, Thomas F.
中科院分区：
文献类型：
--
作者：
Saporito, Ralph A.;Donnelly, Maureen A.;Madden, Anne A.;Garraffo, H. Martin;Spande, Thomas F.
毒蛙含有一种基于生物碱的化学防御，这种化学防御是直接从含有生物碱的节肢动物的饮食中分离出来的。生物碱防御的地理和时间变化在毒蛙中很常见，通常归因于含生物碱节肢动物的可用性差异。毒蛙的化学防御变化可能会对捕食者与猎物的相互作用产生重要影响，需要充分理解解释这种变化所涉及的因素。在本研究中，我们研究了位于巴拿马博卡斯德尔托罗群岛的南希岛（索拉特岛）的树蛙毒蛙 Oophaga pumilio 中雄性和雌性之间的生物碱变异。平均而言，与男性相比，女性含有更多数量的生物碱。生物碱成分在雄性和雌性之间存在显着差异，这说明了该群体中的化学防御。 pumiliois 性别依赖性。性别之间生物碱的差异归因于雄性和雌性之间的喂养和行为差异。大多数生物碱存在于 O 的皮肤中。 pumilio 似乎源自 oribatid 螨，这支持了这些饮食节肢动物在毒蛙化学防御中的重要性。
Poison frogs contain an alkaloid-based chemical defense that is sequestered directly from a diet of alkaloid-containing arthropods. Geographic and temporal variation in alkaloid defense is common in poison frogs and is generally attributed to differences in the availability of alkaloid-containing arthropods. Variable chemical defense in poison frogs may have important consequences for predator−prey interactions, requiring a full understanding of the factors involved in explaining such variation. In the present study, we examine alkaloid variation in the dendrobatid poison frogOophaga pumiliobetween males and females on Cayo Nancy (Isla Solarte), located in the Bocas del Toro archipelago of Panama. On average, females contained a significantly larger number and quantity of alkaloids when compared to males. Alkaloid composition varied significantly between males and females, illustrating that chemical defense in this population ofO. pumiliois sex-dependent. The variation in alkaloids between sexes is attributed to differences in feeding and behavior between males and females. The majority of alkaloids present in the skin ofO. pumilioappear to be of oribatid mite origin, supporting the importance of these dietary arthropods in the chemical defense of poison frogs.
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影响因子：
2.3
作者：
Daly, John W.;Garraffo, H. Martin;Vences, Miguel
通讯作者：
Vences, Miguel
影响因子：
2.3
作者：
Jones, TH;Gorman, JST;Spande, TF
通讯作者：
Spande, TF
DOI：
10.1073/pnas.1834430100
发表时间：
2003-09-16
影响因子：
11.1
作者：
Daly, JW;Garraffo, HM;Cover, JF
通讯作者：
Cover, JF
DOI：
10.1073/pnas.0610785104
发表时间：
2007-02-13
影响因子：
11.1
作者：
Hutchinson, Deborah A.;Mori, Akira;Schroeder, Frank C.
通讯作者：
Schroeder, Frank C.
影响因子：
56.9
作者：
DALY, JW;MYERS, CW
通讯作者：
MYERS, CW