Trends in the Reproductive Phenology of two Great Lakes Fishes
Trends in the Reproductive Phenology of two Great Lakes Fishes
复制标题
两种五大湖鱼类生殖物候的趋势
DOI：
10.1080/00028487.2015.1082502
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发表时间：
2015
影响因子：
1.4
通讯作者：
P. McIntyre
中科院分区：
文献类型：
--
作者：
J. Lyons;A. Rypel;P. Rasmussen;T. Burzynski;Bradley T. Eggold;Jared T. Myers;Tammie J. Paoli;P. McIntyre
摘要为了评估气候变化对五大湖鱼类种群的潜在影响，我们研究了黄鲈(春季产卵)和湖鲑鱼(秋季产卵)的生殖物候变化趋势。据估计，密歇根湖黄鲈的繁殖中点日期(50%的成熟雌性鱼成熟或花掉，50%尚未产卵)发生在密尔沃基附近的春季，1988年至2012年，提前6.2d/十年，而在绿湾，估计的繁殖中点日期早1.8d/十年，从1980年到2012年。在这两个地点，产卵地点的水温在中点日期没有显示出趋势，但在研究期间，产卵地点和米德莱克春季的平均水温有所上升。这表明，黄花鲈产卵区在春季变暖得更早，而且为了维持一致的产卵温度，黄花鱼产卵的时间也更早。湖区鲑鱼的物候类型较为复杂。对于密尔沃基附近的密歇根湖的鲑鱼湖来说，有一个轻微的信号…
AbstractTo assess potential effects of climate change on Great Lakes fish populations, we evaluated trends in the reproductive phenology of Yellow Perch Perca flavescens (spring spawner) and Lake Trout Salvelinus namaycush (autumn spawner). For Yellow Perch in Lake Michigan, the estimated reproductive midpoint date (50% of mature females ripe or spent, 50% not yet spawned) took place 6.2 d/decade earlier in the spring near Milwaukee from 1988 to 2012 and 1.8 d/decade earlier in Green Bay from 1980 to 2012. At both locations water temperatures at the spawning sites on the midpoint date showed no trends, but mean water temperatures during the spring at the spawning site and midlake increased over the study period. This suggests that Yellow Perch spawning areas were warming sooner in the spring and that Yellow Perch were spawning earlier to maintain a consistent spawning temperature. Lake Trout phenological patterns were more complex. For Lake Trout in Lake Michigan near Milwaukee, there was a marginally sig...