THE ENERGETIC CONSEQUENCES OF PARASITISM - EFFECTS OF A DEVELOPING INFECTION OF TRICHOSTRONGYLUS-TENUIS (NEMATODA) ON RED GROUSE (LAGOPUS-LAGOPUS-SCOTICUS) ENERGY-BALANCE, BODY-WEIGHT AND CONDITION
THE ENERGETIC CONSEQUENCES OF PARASITISM - EFFECTS OF A DEVELOPING INFECTION OF TRICHOSTRONGYLUS-TENUIS (NEMATODA) ON RED GROUSE (LAGOPUS-LAGOPUS-SCOTICUS) ENERGY-BALANCE, BODY-WEIGHT AND CONDITION
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DOI：
10.1017/s0031182000064817
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发表时间：
1995-05-01
期刊：
影响因子：
2.4
通讯作者：
MOSS, R
中科院分区：
文献类型：
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作者：
DELAHAY, RJ;SPEAKMAN, JR;MOSS, R
在圈养的红松鸡 Lagopus lagopus scoticus 中研究了细毛圆线虫幼虫单剂量感染的发生时间。感染后 12 天 (p.i.)，受感染鸡的静息代谢率比对照组高 16%，此后体重减轻的速度比对照组更快。注射后第 16 天与对照组相比，受感染的鸡消耗的能量减少了 38%，排泄的能量也减少了 33%。感染鸟类在感染后 16 天的估计每日总能量消耗和活动消耗的能量。分别比对照组低 36% 和 83%。受感染的禽类从感染后 16 天起就失去了健康状况。以后。出生后12-16天的能量不平衡期与第四阶段后期幼虫发育成成虫和开放的时间一致。此后，对能量平衡的影响减弱。春季野生鸟类中先前被捕的 T. tenuis 幼虫的同步发育可能与此处报道的效果类似，并将松鸡置于能量不平衡的条件下。观察到的对能量平衡的影响提供了一种可能的机制，寄生虫可以通过该机制降低受感染松鸡的繁殖力和存活率。
The timing of the energetic consequences of a developing, single-dose infection of Trichostrongylus tenuis larvae was investigated in captive red grouse Lagopus lagopus scoticus. At 12 days post-infection (p.i.), infected birds had a resting metabolic rate 16 % greater than controls and thenceforth lost weight at a faster rate than controls. At 16 days p.i. infected birds consumed 38 % less energy and excreted 33 % less energy than controls. The estimated total daily energy expenditure and energy expended on activity for infected birds at 16 days p.i. were 36 % and 83 % lower, respectively, than for controls. Infected birds lost condition from 16 days p.i. onwards. The period of energy imbalance at 12-16 days p.i. coincided with development of late 4th-stage larvae into adult worms and the onset of patency. After this, the effects on energy balance diminished. Synchronous development of previously arrested T. tenuis larvae in wild birds in spring probably has similar effects to those reported here and places grouse under conditions of energy imbalance. The observed effects on energy balance provide a possible mechanism by which the parasite can reduce fecundity and survival of infected grouse.