Cyclical trends in the biomass and mean body weight indices of two Northwest Atlantic squid species and their synchronies with Gulf Stream latitudinal positions
Cyclical trends in the biomass and mean body weight indices of two Northwest Atlantic squid species and their synchronies with Gulf Stream latitudinal positions
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两种西北大西洋鱿鱼物种的生物量和平均体重指数的周期性趋势及其与湾流纬度位置的同步性
DOI：
10.1007/s00227-023-04237-w
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发表时间：
2023
期刊：
影响因子：
2.4
通讯作者：
Moustahfid, Hassan
中科院分区：
文献类型：
--
作者：
Hendrickson, Lisa C.;Gangopadhyay, Avijit;Moustahfid, Hassan
自回归谱分析揭示了潜在的周期性趋势，在高度可变的生物量和平均体重指数的两个西北大西洋鱿鱼物种相反的生活histors.Doryteuthis pealeii重视其卵块的海底浅沃茨在美国东北部的货架。分布范围更广的Illex illecebrosuses墨西哥湾流（GS）运输其远洋卵块和浮游生物从南部（美国大陆架）到中部（斯科舍大陆架）和北方（大浅滩）渔业区。我们比较了1993-2016年调查指数，GS纬度位置（74°，70°，65°，60°，55°和50°W）和冬季北大西洋涛动（NAO）指数之间的显着谱峰或周期，以揭示任何同步性。正NAO异常与GS位置北移有关。NAO指数存在2-3年、4-5年和近十年的周期变化。65°W以西（西段）、60°W以东（东段）和65° ~ 60°W的GS位置周期分别为2-3年、3-4年和2 ~ 4年。中、南部渔区的illecebrosus指数分别呈现3-4 a和2-3 a的周期变化，与东、西部GS区的GS纬度位置同步。泥炭生物量周期具有季节性变化。春季4-5年周期与北大西洋涛动同步，秋季近10年周期与北大西洋涛动和所有GS位置同步。我们的研究结果的年际生物量和体重周期从2至3年，近十年是显着的考虑到这两个物种的次年度寿命，但确认招聘，身体大小和周期性环境强迫因素之间的紧密耦合。
Autoregressive spectral analysis revealed underlying cyclical trends in the highly variable biomass and mean body weight indices of two Northwest Atlantic squid species with opposing life histories.Doryteuthis pealeiiattaches its egg masses to the seabed in shallow waters on the Northeast USA shelf. The broader-rangingIllex illecebrosususes the Gulf Stream (GS) to transport its pelagic egg masses and paralarvae from the Southern (USA shelf) to the Middle (Scotian Shelf) and Northern (Grand Banks) Fishery Regions. We compared significant spectral peaks, or cycles, between the 1993–2016 survey indices, GS latitudinal positions (at 74°, 70°, 65°, 60°, 55° and 50°W) and winter North Atlantic Oscillation (NAO) indices to reveal any synchronicities. Positive NAO anomalies associated with northward GS position shifts were predominant. NAO indices exhibited 2–3-year, 4–5-year, and near-decadal cycles. GS position periodicities included 2–3-year, 3–4-year, and both timescales for west of 65°W (Western Segment), east of 60°W (Eastern), and from 65° to 60°W, respectively.I. illecebrosusindices exhibited stock-wide 3–4-year cycles and 2–3-year cycles for the Middle and Southern Fishery Regions that were synchronous with GS latitudinal positions for the Eastern and Western GS Segments, respectively.D. pealeiibiomass cycles varied seasonally. Spring 4–5-year cycles were synchronous with the NAO, and fall near-decadal cycles were synchronous with the NAO and all GS locations analyzed. Our findings of inter-annual biomass and body weight cycles from 2 to 3 years to near-decadal are remarkable given the sub-annual lifespans of both species, but confirm the tight coupling between recruitment, body size, and cyclical environmental forcing factors.
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影响因子：
2.4
作者：
E. Hatfield;R. Hanlon;J. Forsythe;E. Grist
通讯作者：
E. Grist
DOI：
--
发表时间：
1989
期刊：
影响因子：
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影响因子：
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作者：
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通讯作者：
J. Brodziak
DOI：
10.1016/s0198-0149(11)80007-5
发表时间：
1992-03-01
期刊：
DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS
影响因子：
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作者：
JOYCE, TM;BISHOP, JKB;BROWN, OB
通讯作者：
BROWN, OB
影响因子：
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作者：
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通讯作者：
Joyce, Terrence M.