Movement patterns of American eels (Anguilla rostrata) between salt- and freshwater in a coastal watershed, based on otolith microchemistry

Lamson, Heather M.; Shiao, Jen‐Chieh; Iizuka, Yoshiyuki; Tzeng, Wann‐Nian; Cairns, D. K.

doi:10.1007/s00227-006-0308-2

Cited by 56 publications

(35 citation statements)

References 19 publications

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“…This estuarine occurrence is also noted by McKenzie (1959) who reported up to 6818 kg taken in Miramichi Bay and adjacent rivers by commercial fishers in some years and that historically, great quantities were taken in holes through the ice with spears, a fishery that continues in parts of Atlantic Canada (Cairns 1997). Recent work based on otolith strontiumto-calcium ratios from two estuaries in Prince Edward Island indicates A. rostrata can complete its entire life cycle in the sea by making extensive use of estuaries (Lamson et al 2006). Hence, the catadromy paradigm for the American Eel from Atlantic Canada is overturned (Lamson et al 2006).…”

Section: Percentage Total Length (Cm)mentioning

confidence: 99%

“…Recent work based on otolith strontiumto-calcium ratios from two estuaries in Prince Edward Island indicates A. rostrata can complete its entire life cycle in the sea by making extensive use of estuaries (Lamson et al 2006). Hence, the catadromy paradigm for the American Eel from Atlantic Canada is overturned (Lamson et al 2006). The high representation of exclusive salt-water residency in Eels (84.6%) suggests that non-catadromy may be an important and common pattern for the American Eel (Lamson et al 2006) although some undoubtly show both patterns.…”

Section: Percentage Total Length (Cm)mentioning

confidence: 99%

“…Hence, the catadromy paradigm for the American Eel from Atlantic Canada is overturned (Lamson et al 2006). The high representation of exclusive salt-water residency in Eels (84.6%) suggests that non-catadromy may be an important and common pattern for the American Eel (Lamson et al 2006) although some undoubtly show both patterns.…”

Section: Percentage Total Length (Cm)mentioning

confidence: 99%

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Annual and Monthly Variation in Species Composition and Catches of Fishes from the Tabusintac River Estuary in the Southern Gulf of St. Lawrence

Herrell

Methven

2009

Can Field Nat

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A total of 7130 fish from 13 taxa were collected during summer and autumn, 2002-2005 using box traps at two sites in the Tabusintac River Estuary, New Brunswick, Canada. The objective was to determine seasonal change in species composition and catches, and to access change in annual returns of Atlantic Salmon, an important recreational fishery during autumn on the Tabusintac, Miramichi and neighboring rivers. Taxa richness and composition varied annually and from trap to trap. Richness ranged from 8-10 taxa annually and catches were usually highest in the trap closest to the ocean despite its slightly smaller size. Taxa contributing greater than one percent of the total catch during the four years of sampling included six diadromous taxa: Blueback Herring and Alewife (41.65%), Striped Bass (21.54%), Atlantic Salmon (3.98%), Tomcod (2.95%), Brook Trout (1.05%), American Eel (5.27%); one freshwater species, White Sucker (11.96%); one marine species, Winter Flounder and one resident estuarine species, Smooth Flounder which together account for 11.19% of the total catch. The remaining five species (American Smelt, Northern Pipefish, White Perch, Cunner, Sea Lamprey) contributed 0.39% of the total catch. The fish fauna 14-15 km up the Tabusintac River was not species rich, due in large part to the limited sampling time each year and due to fishing with just one sampling gear, a stationary box trap. Additional species would have been collected if smaller mesh sampling gear were used. Comparisons were made with other studies and the phenology of the dominant species on the Tabusintac and Miramichi River Estuaries during the ice free season is established. Most catches appear to be related to pre-or post-spawning movements of anadromous fishes.

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Section: Percentage Total Length (Cm)mentioning

confidence: 99%

Section: Percentage Total Length (Cm)mentioning

confidence: 99%

Section: Percentage Total Length (Cm)mentioning

confidence: 99%

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Annual and Monthly Variation in Species Composition and Catches of Fishes from the Tabusintac River Estuary in the Southern Gulf of St. Lawrence

Herrell

Methven

2009

Can Field Nat

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“…For instance, the size structure observed could be biased if all the different habitats are not investigated , or if the gear used is not the same (Baisez, 2001). Despite some exceptions (Lamson et al, 2006), large eels generally exhibit little migration behavior and tend to become sedentary ("home-range dwellers"), though some remain "nomadic" (Baisez, 2001;Ibbotson et al, 2002;Feunteun et al, 2003;Laffaille et al, 2005b). In UK rivers, Ibbotson et al (2002) showed that density-dependent mechanisms mainly apply to eels aged 0-4 years, whereas larger ones disperse randomly.…”

Section: Differences In the Nature Of Information According To Sizementioning

confidence: 99%

Assessing the freshwater distribution of yellow eel

Lasne

Laffaille

2008

Knowl. Managt. Aquatic Ecosyst.

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In the global context of the decline in wild species, modeling the distribution of populations is a crucial aspect of ecological management. This can be a major challenge, especially for species, such as the European eel, that have complex life cycles, exhibit cryptic behavior, or migrate over long distances. A review of the literature suggests that eel size data could be used to assess and analyze freshwater distribution of eel. We argue that analyses based on small yellow eels (≤ 300 mm) along the longitudinal course of rivers could provide a valuable tool for population monitoring. We propose a standardized catchment recruitment index and a colonization index based on the probability of occurrence (presence/absence data) using logistic models for different size classes. The model developed here provides a convenient guide for assessing yellow eel stages in freshwater areas, and should have concrete applications for management of the species. RÉSUMÉ Évaluation de la distribution des anguilles jaunes en eau douceDans le contexte actuel de déclin des espèces, la modélisation de la distribution des populations est une étape importante pour la gestion de la biodiversité. Cependant, cette modélisation peut s'avérer difficile, particulièrement pour les espèces qui, comme l'anguille européenne, possèdent des cycles de vie complexes, ont un mode de vie cryptique ou effectuent de grandes migrations. Un examen de la littérature suggère que la taille des anguilles peut être utilisée comme critère pour évaluer et analyser la distribution des anguille en eau douce. Nous suggérons que l'examen des patrons de distribution des petites anguilles (≤ 300 mm) le long des réseaux hydrographiques peut fournir des informations précieuses pour le suivi des populations. Nous proposons un indice standardisé de recrutement et de colonisation des bassins versants sur la

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“…The American eel exhibits unique population attributes: it seems to comprise a panmictic population (Williams and Koen 1984;Avise et al 1986;Wirth and Bernatchez 2003); displays a geographical distribution with continental population segments ranging from southwestern Greenland (Tesch 1977;Boetius 1985) to the north coast of Venezuela (Tesch 1977;Penczak and Lasso 1991;FAO 2002); and, displays migratory patterns ranging from catadromy (hatched in the ocean with the growth phase of their life cycle in freshwater) to semi-catadromy where the growth phase takes place in salt and brackish continental waters (Haro and Krueger 1988;Jessop et al 2002Jessop et al , 2006. Plasticity in diadromy has led some authors to categorize American eel as facultative catadromous Lamson et al 2006;Thibault et al 2007b). A variety of movement patterns and great phenotypic plasticity seem to be fundamental for the success of a panmictic species that is also characterized by a semelparous life history (Jessop et al 2002).…”

Section: Introductionmentioning

confidence: 99%

A synthesis of the ecological processes influencing variation in life history and movement patterns of American eel: towards a global assessment

Vélez‐Espino

Koops

2009

Rev Fish Biol Fisheries

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American eel, Anguilla rostrata, is a catadromous fish that spawns in the Sargasso Sea and migrates to coastal waters and freshwater systems ranging from Greenland down the Atlantic coast to South America and has been regarded as comprising a panmictic population. American eel is in decline across much of its range. Research and management is primarily conducted at local to regional scales, yielding inconsistent research results and management recommendations that may be inhibited by large-scale processes. We review the research on American eel ecology demonstrating that its variable life history and movement patterns can be explained based on: (1) latitudinal productivity gradients; (2) ideal free habitat selection; (3) conditional evolutionarily stable life history strategies; (4) size at arrival to the coast (correlated with distance from the spawning grounds); and, (5) temperature variance and annual degree-day effects on somatic growth. Using these ecological processes, we outline how local and largescale effects on American eel dynamics can be integrated in a panmictic (or quasi-panmictic) modelling framework to enable defensible predictions of population responses to anthropogenic and oceanic phenomena. Due to its widespread distribution and existing knowledge gaps, the conservation and management of American eel will require international cooperation.

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Movement patterns of American eels (Anguilla rostrata) between salt- and freshwater in a coastal watershed, based on otolith microchemistry

Cited by 56 publications

References 19 publications

Annual and Monthly Variation in Species Composition and Catches of Fishes from the Tabusintac River Estuary in the Southern Gulf of St. Lawrence

Annual and Monthly Variation in Species Composition and Catches of Fishes from the Tabusintac River Estuary in the Southern Gulf of St. Lawrence

Assessing the freshwater distribution of yellow eel

A synthesis of the ecological processes influencing variation in life history and movement patterns of American eel: towards a global assessment

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