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The responses of a funnel‐web weaving spider, A gelena labyrinthica , to elevated CO 2 concentration
Author(s) -
Wang Xia,
Zuo Lin,
Yun Yueli,
Chen Jian,
Zhang Zengtao,
Peng Yu
Publication year - 2016
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/eea.12511
Subject(s) - instar , superoxide dismutase , biology , zoology , amylase , food science , biochemistry , botany , enzyme , larva
The effects of elevated CO 2 concentration on the growth and development of the funnel‐web weaving spider A gelena labyrinthica ( C lerck) ( A raneae: A gelenidae) were studied in climate chambers with low (370 μl l −1 ) or high (750 μl l −1 ) CO 2 concentration. Seventh‐instar A . labyrinthica cultured under each of these CO 2 concentrations were randomly selected to determine nutrient composition (total protein, total amino acid, and free fatty acid) and digestive or detoxification enzymes activity (peroxidase, amylase, and superoxide dismutase) using test kits. When reared under high CO 2 concentration, total development of A . labyrinthica was significantly faster. Carapace length and width and body weight did not differ between CO 2 concentrations, nor the levels of protein and total amino acids in seventh‐instar A . labyrinthica . However, free fatty acid levels were significantly lower under high CO 2 concentration. Specific activities of peroxidase and superoxide dismutase in seventh‐instar A . labyrinthica did not differ between CO 2 concentrations. The specific activity of amylase under high CO 2 concentration was higher than that of the low CO 2 group. The effects of elevated CO 2 on A . labyrinthica varied from those on the wandering spider P ardosa astrigera L Koch, as found in an earlier study. Apparently, elevated CO 2 has a species‐specific impact on spiders.