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首页> 外文期刊>Bulletin of the British Arachnological Society >Possible role of brain mo no a mines in the dispersal behaviour of spiderlings of Hogna caroKnensis (Walckenaer) (Araneae, Lycosidae)
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Possible role of brain mo no a mines in the dispersal behaviour of spiderlings of Hogna caroKnensis (Walckenaer) (Araneae, Lycosidae)

机译：地雷可能在霍格纳caroKnensis（Walckenaer）（Araneae，Lycosidae）的幼虫的扩散行为中发挥作用

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摘要

Experiments were conducted to identify neurochemical parameters (changes in brain monoamines) associated with the dispersal of spiderlings of Hogna carolinensis (Lycosidae). Bruin weights did not differ over the five-day period immediately after emergence from the egg sac, during which, the spiderlings remained attached to the abdomen of the maternal parent. All spiderlings dispersed from their mothers on day 6 after emergence (under rearing conditions of 23°C, 70% relative humidity, and a 14L:10D photoperiod regime). Mean brain concentrations of serotonin (5-HT) ranged from 56.61-62.23 nm/mg for spider-lings from days one to five after emergence, the time during which they remained with their mother, and increased to 81.34 nm/mg on day 6 (following dispersal), and 81.13 nm/mg for adults. There was no significant difference in 5-HT levels between the brains of adult males and females, or between 6-day old spiderlings and adults. Levels of 5-HT increased significantly on day 6 after emergence as compared with concentrations recorded on day 5. There were no significant differences between mean brain concentrations of octopamine (OA) for days 1-5. However, on day 6, there was a significant increase in OA levels as compared with day 5. In contrast, dopamine (DA) concentrations did not change significantly at any developmental stage. The possible role of 5-HT and OA in the onset of dispersal behaviour in lycosid spiderlings is discussed.
机译：进行了实验，以鉴定与霍纳卡罗莱纳蛛（Lycosidae）的蜘蛛幼虫的扩散有关的神经化学参数（脑中单胺的变化）。刚从卵囊中出来后的五天内，熊的体重没有变化，在此期间，小蜘蛛仍然附着在母体的腹部。出苗后第6天（在23°C，70％相对湿度和14L：10D光周期条件下的饲养条件下），所有幼蛛从其母亲处散落。出雏后第1天至第5天，即与母亲在一起的时间，血清中5-羟色胺（5-HT）的平均脑浓度范围为56.61-62.23 nm / mg，并在第6天增加至81.34 nm / mg。 （跟随分散），成人为81.13 nm / mg。成年雄性和雌性大脑之间，或六日龄幼虫和成年大脑之间的5-HT水平没有显着差异。与第5天记录的浓度相比，出苗后第6天的5-HT水平显着增加。第1-5天的平均大脑中的章鱼胺（OA）浓度之间无显着差异。但是，与第5天相比，第6天的OA水平显着增加。相反，多巴胺（DA）的浓度在任何发育阶段均没有显着变化。讨论了5-HT和OA在糖液小蜘蛛分散行为中可能起的作用。

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