利用气温预测亚洲鲤鱼成熟年龄

IF 1.6 3区 农林科学 Q3 FISHERIES
Madison E. Brook, Kim Cuddington, Marten A. Koops
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引用次数: 0

摘要

亚洲鲤鱼(鳙鱼,Hypophthalmichthys nobilis;草鱼(Ctenopharyngodon idella)和鲢鱼(H. molitrix)是一群入侵物种,一旦入侵五大湖流域,预计会造成生态影响。虽然已知亚洲鲤鱼的成熟年龄是建立种群风险的一个重要因素,但北美的成熟数据相对较少。我们发现气温可以用来预测亚洲鲤鱼的成熟年龄。利用年平均气温和年平均度日来预测成熟年龄的非线性回归分别解释了60%和62%的变化。根据阿穆尔河的数据,这些模型预测,在以前被排除在亚洲鲤鱼产卵范围之外的地区,成熟是可能的。正如预期的那样,我们发现北美南部地区的成熟速度更快,尽管在密西西比河种群中预测成熟年龄存在相对较大的误差。我们的结论是,由于更快的成熟对人口增长率的影响,五大湖南部地区(如伊利湖)可能面临更快的人口建立风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Predicting the age at maturity of Asian carp using air temperature

Predicting the age at maturity of Asian carp using air temperature

Asian carp (bighead carp, Hypophthalmichthys nobilis; grass carp, Ctenopharyngodon idella and silver carp, H. molitrix) are a group of invasive species that are predicted to cause ecological effects if they invade the Great Lakes basin. Although Asian carp age at maturity is known to be an important factor in the risk of establishing a population, there is relatively little maturity data for North America. We found that air temperature can be used to predict the age at maturity of Asian carp. Nonlinear regressions using mean annual air temperature and annual degree days to predict age at maturity explain 60% and 62% of the variation respectively. These models predict that maturation is possible in locations that were previously excluded from Asian carp spawning range based on data from the Amur River. As expected, we find faster maturation in more southern areas of North America, although there are relatively large errors predicting age at maturity in the Mississippi River population. We conclude that due to the effect of faster maturation on population growth rates, southern Great Lakes locations (e.g. Lake Erie) may be at greater risk of faster population establishment.

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来源期刊
Ecology of Freshwater Fish
Ecology of Freshwater Fish 农林科学-海洋与淡水生物学
CiteScore
4.10
自引率
0.00%
发文量
45
审稿时长
12-24 weeks
期刊介绍: Ecology of Freshwater Fish publishes original contributions on all aspects of fish ecology in freshwater environments, including lakes, reservoirs, rivers, and streams. Manuscripts involving ecologically-oriented studies of behavior, conservation, development, genetics, life history, physiology, and host-parasite interactions are welcomed. Studies involving population ecology and community ecology are also of interest, as are evolutionary approaches including studies of population biology, evolutionary ecology, behavioral ecology, and historical ecology. Papers addressing the life stages of anadromous and catadromous species in estuaries and inshore coastal zones are considered if they contribute to the general understanding of freshwater fish ecology. Theoretical and modeling studies are suitable if they generate testable hypotheses, as are those with implications for fisheries. Manuscripts presenting analyses of published data are considered if they produce novel conclusions or syntheses. The journal publishes articles, fresh perspectives, and reviews and, occasionally, the proceedings of conferences and symposia.
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