کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2840684 1165348 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of diet and water supply on energy intake and water loss in a mygalomorph spider in a fluctuating environment of the central Andes
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش حشره شناسی
پیش نمایش صفحه اول مقاله
Effects of diet and water supply on energy intake and water loss in a mygalomorph spider in a fluctuating environment of the central Andes
چکیده انگلیسی

The metabolic and water evaporation strategies in spiders may be part of a set of physiological adaptations to tolerate low or unpredictable food availability, buffering spiders against environmental fluctuations such as those of the high mountains of the central Andes.The aim of this study is to analyze experimentally the variations in metabolic rate and the rate of evaporative water with food and/or water restriction in a high mountain mygalomorph spider population (Paraphysa sp.).We found that the low metabolism of this spider was not affected by water restriction, but its metabolism was depressed after 3 weeks of food deprivation. The spider did not show seasonal metabolic changes but it presented seasonal changes in the rate of evaporative water loss at high temperatures.Females with egg sacs reduced their metabolic rate and evaporative water at high temperatures.These findings constitute a set of possible adaptations to a highly fluctuating Mediterranean environment, which is completely covered with snow for many months and then progresses rapidly to a very dry climate with high temperatures.

Figure optionsDownload as PowerPoint slideHighlights
► We analyze metabolic and evaporative water rate with food and/or water restriction in a spider.
► Metabolism was not affected by water restriction, but its metabolism was depressed after food deprivation.
► Spiders did not show seasonal metabolic changes; it showed water loss changes at high temperatures.
► Females with egg sacs reduced their metabolic rate and evaporative water at high temperatures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Insect Physiology - Volume 57, Issue 11, November 2011, Pages 1489–1494
نویسندگان
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