Factors Influencing Growth and Body Condition of Alewives in Connecticut Lakes

Anderson, Marcy R.; Neumann, Robert M.

doi:10.1080/02705060.2002.9663868

Cited by 5 publications

(7 citation statements)

References 21 publications

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“…The alewife populations in the two study lakes were at different stages of population development. Alewives have been in Cayuta Lake for at least three decades and exhibit characteristics of other landlocked alewife populations: high abundance, slow growth rate and relatively poor condition (Graham 1954;Anderson and Neumann 2002;Post et al 2008). Zooplankton in Cayuta Lake were small, phytoplankton was abun-dant, and water clarity was poor; these are classic responses to size-selective alewife predation resulting in cascading trophic interactions (Hrbaček et al 1961;Brooks and Dodson 1965;Carpenter et al 1985).…”

Section: Discussionmentioning

confidence: 99%

“…For age 0, age 1, and age 2 and older, 77-84% of the variation in length at age and 48-84% of variation in condition was predicted by density alone. Although alewife growth rates in Cayuta Lake were similar to many landlocked populations (Odell 1934;Anderson and Neumann 2002), Canadarago Lake alewives grew very fast, reaching lengths typically observed in anadromous alewives (Scott and Crossman 1973). The Canadarago Lake population may be among the fastest growing landlocked alewife populations reported in the primary literature, but anecdotal evidence indicates that this growth rate is not unusual shortly after invasions.…”

Section: Alewife Population Dynamicsmentioning

confidence: 97%

“…In addition, dense adult alewife populations may depress zooplankton populations, decrease age-0 growth rates, and possibly increase age-0 mortality rates. However, the degree to which alewife growth rate is density-dependent is not known, and Anderson and Neumann (2002) did not detect a density effect on growth rate of alewives in a set of Connecticut lakes. Decreased abundance of adults could also lead to decreased cannibalism and therefore increased survival of larvae, as observed in alewives (Rhodes et al 1974;Kohler and Ney 1980) and other fish species (Chevalier 1973;Dong and DeAngelis 1998;Persson et al 2004;Parker-Stetter et al 2007).…”

mentioning

confidence: 97%

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Analysis of Compensatory Responses in Land‐Locked Alewives to Walleye Predation: A Tale of Two Lakes

et al. 2011

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We compared one established population (Cayuta Lake) and one expanding population (Canadarago Lake) of landlocked alewives Alosa pseudoharengus to evaluate compensatory responses of alewives to predation by walleyes Sander vitreus. Alewives have been present in Cayuta Lake since at least 1977, and during the years 1995 to 2009 the population ranged from 24,470 fish/ha in 2000 to 3,800 fish/ha in 2007. Alewives were first observed in Canadarago Lake during 1999, and the population remained at low densities (<26 fish/ha) until reaching 370 fish/ha in 2006 and 1,050 fish/ha in 2009. Differences in zooplankton reflected higher planktivory rates in Cayuta Lake than in Canadarago Lake. Density of age‐3 and older walleyes was higher in Canadarago Lake (21–24 fish/ha) than in Cayuta Lake (12–14 fish/ha), despite elevated stocking rates of fingerling walleyes in Cayuta Lake during 2002–2006. Alewife density explained 77–84% of the variation in alewife length at age and 48–84% of the variation in condition (ages 0, 1, and 2) among years and lakes. Alewife length at age under low densities in Canadarago Lake was similar to observations in anadromous populations. Alewife recruitment (number of fall age‐0 recruits/spawner) was higher in Canadarago Lake than in Cayuta Lake. The combined data yielded a Beverton–Holt stock–recruitment curve that rose rapidly at low alewife densities, and 50% of the maximum recruitment was predicted to occur at 400 spawners/ha. Compensatory responses of alewives at low densities include decreased cannibalism and increased growth rates of both adults and age‐0 fish. Compensatory responses should be considered when evaluating the piscivore levels needed to control alewife populations or, conversely, when evaluating the risk of alewife population collapse in response to increased predation rates. Although alewife abundance declined in response to the experimental walleye stocking in Cayuta Lake, we were unable to increase the walleye population sufficiently to decrease alewife recruitment.

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Section: Discussionmentioning

confidence: 99%

Section: Alewife Population Dynamicsmentioning

confidence: 97%

mentioning

confidence: 97%

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Analysis of Compensatory Responses in Land‐Locked Alewives to Walleye Predation: A Tale of Two Lakes

et al. 2011

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“…Rawson's (1955) observation may be related to the relative amounts of nutrients available, as Schindler (1971) proposed that the supply rate of limiting nutrients to a lake ecosystem was inversely proportional to lake volume. Indeed, for Con-necticut lakes growth of alewives was positively correlated with watershed area : lake volume ratio, lake surface area : lake volume ratio, and chlorophyll a and negatively correlated with maximum and mean lake depth (Anderson and Neumann 2002). These authors suspected that the higher growth of alewives was associated with larger watershed area : lake volume ratios were related to the higher potential for loading of nutrients, so larger watersheds could export more nitrogen and phosphorus, resulting in increased lake productivity.…”

Section: Discussionmentioning

confidence: 99%

Thiamine Content and Thiaminase Activity of Ten Freshwater Stocks and One Marine Stock of Alewives

et al. 2005

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Alewives Alosa pseudoharengus contain thiaminase activity that has been implicated in the development of a thiamine deficiency and associated effects in salmonines of the Great Lakes basin. Little is known about the factors that regulate thiaminase activity in alewives. We sampled alewives of uniform size (60-120 mm) during the summer of 1998 from the Gulf of St. Lawrence, seven of New York's Finger Lakes, one inland lake in Ontario, and two Great Lakes to assess possible relationships among thiamine, lipid content, fish abundance, lake morphometry, lake productivity, freshwater residency, and thiaminase activity. Thiaminase activity varied significantly among the 11 locations but was unrelated to thiamine concentration, which did not vary significantly. Alewife thiaminase activity in the Finger Lakes was negatively related to lipid content and positively related to measures of lake size (e.g., area, volume, and maximum depth). Activity in the one marine stock sampled in the Gulf of St. Lawrence was comparable to the highest values observed in the 10 freshwater stocks examined. Variation in alewife thiaminase activity has the potential to affect the extent of a thiamine deficiency associated with salmonines who feed on alewives as well as the viability of their offspring.

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“…We set vertical gill nets (9.7 mm bar mesh) hanging from the surface to approximately 12 m depth about 1.5 h before sunset (1900). On the first sampling date we retrieved nets before sunrise (0630), but on subsequent dates we retrieved nets around midnight (0030) to minimise losses to American eel Anguilla rostrata (Anderson & Neumann, 2002). Upon collection, we placed fish on ice and processed them within 12 hours.…”

Section: Materials S and Me Thodsmentioning

confidence: 99%

Seasonal reproductive allocation in landlocked Alewife Alosa pseudoharengus, in the context of niche construction and eco‐evolutionary feedbacks

Mouchlianitis

Schultz

Ganias

2022

Ecology of Freshwater Fish

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The bidirectional dynamics between species and their biotic and abiotic environments, known as eco‐evolutionary feedbacks, may shift the direction of evolution and alter the ecological role of species. Alewife, Alosa pseudoharengus, is an exemplary species to study reciprocal feedbacks between ecology and evolution, owing to repeated independent derivations of a landlocked life history from an ancestral anadromous form. In this study we analysed the reproductive allocation during the spawning season in a landlocked Alewife population in the context of eco‐evolutionary feedbacks. We also compared our findings with previous results from a neighbouring anadromous population of the species. Similarities were found between the two Alewife populations in relation to their ovarian development, oocyte release strategy and fecundity type, but also differences in seasonal patterns of energy investment. Anadromous Alewives invested more in the size of the first oocyte batch of the season and subsequently tapered their reproductive allocation, while spawning batch in landlocked Alewife was invariant as the spawning season progressed. The evolutionary change from ancestral tapering to equitability of seasonal reproductive investment can be explained with reference to eco‐evolutionary changes that occurred upon landlocking related to the availability of zooplankton prey and feeding opportunity.

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Factors Influencing Growth and Body Condition of Alewives in Connecticut Lakes

Cited by 5 publications

References 21 publications

Analysis of Compensatory Responses in Land‐Locked Alewives to Walleye Predation: A Tale of Two Lakes

Analysis of Compensatory Responses in Land‐Locked Alewives to Walleye Predation: A Tale of Two Lakes

Thiamine Content and Thiaminase Activity of Ten Freshwater Stocks and One Marine Stock of Alewives

Seasonal reproductive allocation in landlocked Alewife Alosa pseudoharengus, in the context of niche construction and eco‐evolutionary feedbacks

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