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首页> 外文期刊>Bulletin of the British Arachnological Society >Prey preference and consumption by some non-specialist harvestman species (Arachnida: Opiliones).
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Prey preference and consumption by some non-specialist harvestman species (Arachnida: Opiliones).

机译：某些非专业收割者物种的猎物偏好和消费（蛛形纲：Opiliones）。

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摘要

Only a few studies of harvestman prey have dealt with food preference, consumption rate and the value of different food types. This study seeks to clarify these aspects in the non-specialist harvestmen Rilaena triangularis, Oligolophus tridens and Nemastoma lugubre. Food quality was tested with adult R. triangularis, while all three species were used in food preference experiments. The harvestmen were offered eight food types: earthworm, slug, plum, turkey meat, Drosophila melanogaster (Diptera), Sitobion avenae (Aphidoidea), Sinella curviseta (Collembola) and Folsomia Candida (Collembola). In the food quality experiment, consumption rate and effects on animal fitness were examined. In the preference experiment, feeding observations and consumption measurements were used to indicate preference. In general there was little agreement between preference, amounts consumed and food value. Drosophila melanogaster and turkey meat were high quality foods, but associated with high consumption rate of the former and low consumption rate of the latter. Slugs, earthworms, aphids and plum were low-quality foods, though O. tridens and N. lugubre ate surprisingly high amounts of plum. The low quality of slugs is due to pre-ingestive effects, that of earthworms to post-ingestive effects, while the value of S. avenae was limited by both. There is a general similarity between harvestmen and other generalist predators in the value of different food types.
机译：关于收割者猎物的只有很少的研究涉及食物的偏好，消费率和不同食物类型的价值。这项研究旨在澄清非专业收割者Rilaena triangleis，Oligolophus tridens和Nemastoma lugubre中的这些方面。用成年三角生成蝇对食物质量进行了测试，而所有三个物种均用于食物偏好实验中。为收割者提供了八种食物：earth，，李子，火鸡肉，果蝇（Drosophila melanogaster（Diptera），Sitobion avenae（Aphidoidea），Sinella curviseta（Collembola）和Folsomia Candida（Collembola）。在食品质量实验中，检查了食用率及其对动物适应性的影响。在偏好实验中，喂食观察和消耗量测量被用来表明偏好。一般来说，偏好，消费量和食品价值之间几乎没有共识。果蝇和火鸡肉是优质食品，但前者的食用率高而后者的食用率低。 O 、,、蚜虫和李子是劣质食品，尽管O. tridens和N. lugubre吃了惊人数量的李子。的低质量是由于消食前作用，,的是由于消食后作用，而燕麦葡萄球菌的价值受两者的限制。收割者与其他通才捕食者在不同食物类型的价值上普遍相似。

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