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首页> 外文期刊>ICES Journal of Marine Science >Marked variations in reproductive characteristics of snapper (Chrysophrys auratus, Sparidae) and their relationship with temperature over a wide latitudinal range
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Marked variations in reproductive characteristics of snapper (Chrysophrys auratus, Sparidae) and their relationship with temperature over a wide latitudinal range

机译：鲷鱼（Chrysophrys auratus，Sparidae）的生殖特征的明显变化及其在宽纬度范围内与温度的关系

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摘要

The timing and duration of spawning and maturation schedules of Chrysophrys auratus were determined for populations in one subtropical (similar to 25 degrees S on the upper west coast) and two temperate regions (similar to 32 degrees S on the lower west and similar to 35 degrees S on the south coasts) over > 2000 km of coastline along the west coast of Australia. This study thus encompassed the wide latitudinal range of this recreationally and commercially important sparid in this region. The results were used, in conjunction with previously published data, to explore traditional paradigms regarding the relationships between the reproductive characteristics and variations in water temperature. Spawning at each latitude occurred mainly at 19-21 degrees C, but following a decline in temperature in the subtropical region and after a rise in temperature in the two temperate regions. Spawning on the upper west coast thus occurred between mid-autumn and early spring (similar to 7 months) as opposed to late winter to early summer on the lower west coast (similar to 6 months). Spawning on the south coast was mainly restricted to mid-spring to early summer (similar to 2-3 months) in 2003 and 2004 and did not occur in 2005 when temperatures in this period were the coldest on record. Thus, marked interannual differences in the prevalence of mature fish on the south coast probably reflect the "marginality" of the population. The length (L-50) and age (A(50)) at which C. auratus matured increased markedly from 25 to 32 degrees S. Studies such as this allow for latitudinal variations in reproductive characteristics to be incorporated into population models to optimize fisheries sustainable yield, and contribute towards appropriate spatial scales for sustainable management strategies (e.g. minimum legal lengths consistent with latitudinal variation in length-based maturity schedules). The narrow temperature range over which this species spawns accounts for its current latitudinal distribution and enables predictions of how this distribution might alter with climate change. This study provides relevant information for management and climate change implications for similar subtropical and temperate marine teleosts.
机译：确定了一个亚热带（上西海岸约25 S）和两个温带地区（下西约32 S，下约35度）的种群of鱼的产卵和成熟时间表的时间和持续时间。南海岸的S）沿澳大利亚西海岸超过2000公里的海岸线。因此，这项研究涵盖了该地区在休闲和商业上具有重要意义的spa的宽纬度范围。该结果与先前发表的数据一起用于探讨有关生殖特性与水温变化之间关系的传统范例。每个纬度的产卵主要发生在19-21摄氏度，但是在亚热带地区温度下降之后，在两个温带地区温度上升之后。因此，上西海岸的产卵发生在中秋至早春（约7个月）之间，而下西海岸的冬末至夏初（约6个月）则相反。南海岸的产卵主要限于2003年和2004年的春季中期至初夏（大约2-3个月），而2005年没有发生，当时这一时期的温度是有记录以来最冷的。因此，南海岸成熟鱼的流行率年际差异可能反映了人口的“边缘性”。淡水梭菌成熟的长度（L-50）和年龄（A（50））从25度显着增加到32度。诸如此类的研究允许将繁殖特征的纬度变化纳入种群模型以优化渔业可持续的产量，并为可持续的管理策略提供适当的空间比例（例如，与基于长度的期限表中的纬度变化相一致的最小法律长度）。该物种产卵的温度范围狭窄，说明了其当前的纬度分布，并能够预测这种分布如何随气候变化而变化。这项研究为类似的亚热带和温带海洋硬骨鱼的管理和气候变化影响提供了相关信息。

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  • 来源
    《ICES Journal of Marine Science》 |2015年第8期|2341-2349|共9页
  • 作者

    Wakefield Corey B.; Potter Ian C.; Hall Norman G.; Lenanton Rodney C. J.; Hesp Sybrand A.;

  • 作者单位

    Govt Western Australia, Dept Fisheries, Western Australian Fisheries & Marine Res Labs, North Beach, WA 6920, Australia;

    Murdoch Univ, Ctr Fish & Fisheries Res, Sch Vet & Life Sci, Perth, WA 6150, Australia;

    Govt Western Australia, Dept Fisheries, Western Australian Fisheries & Marine Res Labs, North Beach, WA 6920, Australia|Murdoch Univ, Ctr Fish & Fisheries Res, Sch Vet & Life Sci, Perth, WA 6150, Australia;

    Govt Western Australia, Dept Fisheries, Western Australian Fisheries & Marine Res Labs, North Beach, WA 6920, Australia;

    Govt Western Australia, Dept Fisheries, Western Australian Fisheries & Marine Res Labs, North Beach, WA 6920, Australia|Murdoch Univ, Ctr Fish & Fisheries Res, Sch Vet & Life Sci, Perth, WA 6150, Australia;

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  • 正文语种 eng
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  • 关键词

    fisheries management; global climate change; maturity; Pagrus; reproductive period; spawning omission; water temperature;

    机译：渔业管理;全球气候变化;成熟度;纸莎草;生育期;产卵遗漏;水温;

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