Long‐term studies on restoration of Connecticut River anadromous sea lamprey, Petromyzon marinus Linnaeus 1758: Trend in annual adult runs, abundance cycle, and nesting

Abstract:
This study is the first to evaluate the results of 60\xa0years of restoring anadromous sea lamprey, Petromyzon marinus, to historical spawning and rearing habitats using fish passage at barrier dams in the Connecticut River, USA. We obtained counts of pre‐spawning adult P.\xa0marinus annually passed upstream at Holyoke Dam (river km\xa0140), Connecticut River, MA, during 37\xa0years (1978–2014), and we counted P.\xa0marinus nests during 25\xa0years (1986–2010) in the Fort River, a tributary upstream of Holyoke Dam. These two data sets were used to study relationships between adult passage and subsequent nesting and to study nesting timing and ecology. During the 37\xa0years, annual adult P.\xa0marinus abundance at Holyoke Dam ranged from 15,000 to 95,000, but regression analysis found no trend (p\xa0=\xa0.50) for increasing annual adult abundance with years. However, during the 37\xa0years, adults gained access via fish passage at dams to an estimated double the amount of spawning and rearing habitat upstream compared to the 1970s. The lack of a trend for increased adult abundance is consistent with a hypothesis of non‐natal river homing by adults. However, the lack of a trend in adult abundance, when many more larvae are likely present in the watershed compared to the 1970s, is inconsistent with the hypothesis that greater numbers of larvae (and greater concentration of larval pheromone) results in greater number of adults attracted to a river. Instead of an abundance trend of adults with years, we found a rare life history phenomenon occurs in anadromous adult P.\xa0marinus ─ an abundance cycle with peaks at 6\xa0year intervals (autocorrelation analysis, p\xa0=\xa0.04). Comparison of passage timing with nesting timing found passage did not affect nesting initiation or duration (p\xa0=\xa0.61). Annual date of nesting initiation strongly affected the duration of nesting with earlier nesting resulting in longer nesting (p\xa0=\xa0.001). Time series comparing Fort River temperature and discharge with nesting found these factors did not clearly predict annual initiation of nesting. This suggests a role for day length (photoperiod) as the trigger for nesting initiation (most nesting began annually during 1–14\xa0June, all year mean, 7\xa0June), regardless of river conditions. However, river discharge may affect nesting ecology because most nesting occurred during decreasing discharge when variability in daily discharge was small (stable discharge). The present research on passage and nesting contributes to a new Connecticut River restoration program for P.\xa0marinus, which is a keystone fish species in the watershed.
Author Listing: Boyd Kynard;Martin J. Horgan
Volume: 35
Pages: 1154-1163
DOI: 10.1111/jai.13967
Language: English
Journal: Journal of Applied Ichthyology

JOURNAL OF APPLIED ICHTHYOLOGY

J APPL ICHTHYOL

影响因子:0.7 是否综述期刊:否 是否OA:否 是否预警:不在预警名单内 发行时间:1985 ISSN:0175-8659 发刊频率:Bimonthly 收录数据库:SCIE/Scopus收录 出版国家/地区:GERMANY 出版社:Wiley-Blackwell Publishing Ltd

期刊介绍

The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.

《应用鱼类学杂志》发表关于鱼类学、水产养殖和海洋渔业的国际知名文章;鱼类病理学和鱼类免疫学;使用鱼类作为试验生物的环境毒理学;渔业管理基础研究;以及与渔业和水产养殖有关的沿海区综合管理的各个方面。重点是应用科学研究成果,同时特别考虑到发展中国家出现的鱼类学问题。文章格式包括原创文章、综述文章、简短通信和技术报告。

年发文量 35
国人发稿量 16
国人发文占比 45.71%
自引率 0.0%
平均录取率 容易
平均审稿周期 一般,3-8周
版面费 US$2950
偏重研究方向 生物-海洋与淡水生物学
期刊官网 http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1439-0426
投稿链接 http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1439-0426/homepage/ForAuthors.html

质量指标占比

研究类文章占比 OA被引用占比 撤稿占比 出版后修正文章占比
100.00% 86.73% 0.00% 0.00%

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