Temperature tolerance and survival in darkness of kelp gametophyles (Laminariales, Phaeophyta): ecological and biogeographical implications

Temperature tolerance and survival in darkness of kelp gametophyles (Laminariales, Phaeophyta): ecological and biogeographical implications
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海带配子体(海带目、褐藻门)的温度耐受性和在黑暗中的生存:生态和生物地理学意义

DOI:
10.3354/meps100253
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发表时间:
1993
影响因子:
2.5
通讯作者:
I. Dieck
I. Dieck
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
I. Dieck

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对 47 个海带目物种(约占该目所有物种的 50%)的丝状红光生长配子体进行了最高生存温度测试(UST,暴露 2 周),并对其中 42 个物种进行了较低生存温度测试(LST,暴露 8 周)。该目中的最低 UST 为 19 至 20°C,在北极到寒温带物种海带中遇到 Solidungula、Alarm esculenta 和 Agarum cribrosum 暖温带的日本物种 Eisenia bicyclis 和 Undana pinnatifida 的 UST 范围为 28 至 30°C 海带目中的 UST 范围因此约为 10°C 这比相关的 Desn~arestiales 目中的 UST 范围低约 5°C 15°C 最大 UST 中的科内变异存在于阿拉斯加科 (Alanaceae) 和昆布科 (Laminanaceae) 中,这是物种最多、分布最广的 2 个科。 五加科 (Alariaceae) 在 UST 中的温度范围为 1O0C,海带科 (Laminariaceae) 为 7 至 8°C,Lessoniaceae 为 5 至 6°C,Phyllariaceae 为 4°C,脊索科 (Chordaceae) 为 3°C 至 4°C。 1°C 持续 8 周 42 个物种中的 11 个不能耐受 -1 5 和/或 0°C 超过 8 周 配子体的温度耐受性与物种的大规模分布一致,但在大多数情况下对于分布限制并不重要 除了温度耐受性之外,还研究了 12 个海带物种的丝状配子体的黑暗耐受性 除了 3 个物种外,所有配子体都存活了 18 个月 黑暗的
Filamentous red-light grown gametophytes of 47 species of the Laminariales, i e about 50% of all species of the order, were tested for upper survival temperature (UST, 2 wk exposure), and 42 of these species were tested for lower survival temperature (LST, 8 wk exposure) The lowest UST in the order is 19 to 20°C, encountered in the Arctic to cold-temperate species Laminaria solidungula, Alarm esculenta and Agarum cribrosum The warm temperate Japanese species Eisenia bicyclis and Undana pinnatifida have the h ~ g h e s t UST of 28 to 30°C The UST range in the order Laminariales, thus, spans about 10°C This 1s about 5°C less than in the related order Desn~arestiales which spans a range in UST of 15°C The largest within-family vanation in UST is found in the Alanaceae and Laminanaceae, the 2 families with most species and widest distribution The Alariaceae span a range in UST of 1O0C, the Laminariaceae of 7 to 8°C the Lessoniaceae of 5 to 6OC the Phyllariaceae of 4 "C and the Chordaceae of 3 to 4OC All gametophytes tested survlve a temperature of 1 "C for 8 wk Eleven out of 42 species do not tolerate -1 5 and/or 0 "C over 8 wk Temperature tolerance of the gametophytes coincides wlth the large-scale distribution of the species but is not crucial for distnbution llmits in most cases In addition to the temperature tolerance, the dark tolerance of fllamentous gametophytes of 12 kelp species was investigated All but 3 specles survived 18 mo of darkness