Diet Composition and Feeding Behavior of Larval American Shad,<i>Alosa sapidissima</i>(Wilson), after the Introduction of the Invasive Zebra Mussel,<i>Dreissena polymorpha</i>(Pallas), in the Hudson River Estuary, NY

Nack, Christopher C.; Limburg, Karin E.; Schmidt, Robert E.

doi:10.1656/045.022.0216

Cited by 15 publications

(9 citation statements)

References 52 publications

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“…Nevertheless, low summer survival rates in the warmest summers are consistent with the idea that extended periods of warm temperatures may kill zebra mussels and thus limit populations (White et al, 2015). Young fish eat veligers (Nack, Limburg, & Schmidt, 2015), as presumably do predatory invertebrates, but we do not have any quantitative estimates of predation rates on veligers in the Hudson, and so cannot evaluate this possibility. Consequently, the importance of factors other than negative density-dependence in setting year-class strength in the Hudson is not yet clear.…”

Section: F I G U R E 11supporting

confidence: 64%

“…Biomass units are grams of shell-free dry matter (Hudson River, this study), dry mass including shells (Oneida Lake, New York, Hetherington et al, 2019;Strayer, Adamovich, et al, 2019), or wet mass, including shells (Lake Peipsi, Estonia-Russia, from Timm et al, 1996). Young fish eat veligers (Nack, Limburg, & Schmidt, 2015), as presumably do predatory invertebrates, but we do not have any quantitative estimates of predation rates on veligers in the Hudson, and so cannot evaluate this possibility. Nevertheless, low summer survival rates in the warmest summers are consistent with the idea that extended periods of warm temperatures may kill zebra mussels and thus limit populations (White et al, 2015).…”

Section: F I G U R E 11mentioning

confidence: 95%

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Long‐term variability and density dependence in Hudson River Dreissena populations

et al. 2019

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We used a 27-year record of Dreissena populations in the freshwater tidal HudsonRiver to describe interannual variation in population density, body size, and body condition; estimate long-term variation in recruitment, survivorship, and shell growth; and assess possible controls on the populations. 2.Dreissena populations in the Hudson have been highly variable, with interannual ranges of c. 100-fold in abundance and biomass, and 7-fold in mean body mass. This large interannual variation arises from both long-term trends and 2-5-year cycles.3. Long-term trends include the 2008 appearance of the quagga mussel (Dreissena rostriformis), which still forms a small part (<10%) of the dreissenid community, and a decline in zebra mussel body size. The decline in body size was caused by a longterm decline in adult survivorship rather than a decline in rates of shell growth. We could detect no long-term trends in adult abundance or spread of Dreissena onto soft sediments in the Hudson. 4. We observed persistent, strong cycles in adult abundance and body size. These were driven by the appearance and decay of eight dominant year classes over the 27 years of our study, and were a result of temporal variation in recruitment rather than temporal variation in survivorship. The observed strongly irregular recruitment appears to arise from strong adult-larval interactions, and is consistent with previous simulation model results showing that interactions between adults and larvae can drive persistent cycling. 5. We found evidence that negative density dependence affects recruitment, somatic growth, and body condition of Dreissena in the Hudson. Warm summers may also cause high adult mortality. 6. We put our results into the context of a conceptual model of Dreissena population dynamics, and argue that neither the dynamics nor the controls of populations of these important invaders is known satisfactorily. K E Y W O R D Sbiological invasions, cycling, invasive species, population dynamics, zebra mussel | 475 STRAYER ET Al.

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Section: F I G U R E 11supporting

confidence: 64%

Section: F I G U R E 11mentioning

confidence: 95%

Long‐term variability and density dependence in Hudson River Dreissena populations

et al. 2019

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“…; Nack et al . ; Paolucci & Thuesen ). Factors that may negatively affect the survival of larval river fishes include, among others, river impoundment (Humphries & Lake ), and the concomitant increase in cyanobacterial blooms, often enhanced by the presence of invasive mussels (Vanderploeg et al .…”

Section: Introductionmentioning

confidence: 99%

Veligers of the invasive bivalveLimnoperna fortuneiin the diet of indigenous fish larvae in a eutrophic subtropical reservoir

Paolucci

Leites²,

Cataldo

et al. 2017

Austral Ecology

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Larval fish development depends largely on their ability to capture and ingest food items, and on food availability. In this context, invasive species, eutrophication and river impoundments have complex impacts on fish larvae. Using samples collected in 2005-2009 in the Salto Grande reservoir (Argentina-Uruguay), periodically affected by cyanobacterial blooms, we studied the impact of the larvae of the exotic bivalve Limnoperna fortunei (Dunker, 1857) (Bivalvia) on larval fish diets. Compared with other nearby waterbodies, the abundance of fish larvae was scarcer in the reservoir, especially during algal bloom periods. Only 20% of the larval fish with gut contents fed on L. fortunei veligers. Seven fish taxa (of a total of 12) consumed veligers of L. fortunei, but only two showed a preference for this prey. Taxonomic changes in the larval fish assemblages due to the river's impoundment, and temporal uncoupling between veliger densities (affected by the toxigenic effects of Microcystis spp.) and ichthyoplankton could account for the comparatively low trophic importance of the invasive bivalve's veligers. These results reflect the complexity of interactions brought about when the same invasive species invades different environments, underscoring that the impacts involved depend as much on the invader, as on the regional and ecological settings of the area invaded.

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“…In the Great Lakes, the appearance of zebra mussel depleted populations of the amphipod Diporeia, which forced Lake Whitefish and Alewives to shift their prey use; feeding success declined, as did growth rate and condition (Madenjian et al 2015;Pothoven et al 2001;Pothoven and Madenjian 2008). Some fishes incorporate zebra mussels into their diets (French and Bur 1996;Nack et al 2015;Pothoven et al 2001;Ruetz et al 2012;Watzin et al 2008), but we found no evidence of early stage Striped Bass feeding on zebra mussel veligers. Other molluscs occurred as rare prey in Striped Bass and other early-stage fishes in our samples; thus we regard as possible but unlikely that the absence of young bivalves in our samples might be attributable to preservation in formalin.…”

Section: Discussionmentioning

confidence: 55%

“…Subsequently, many musselinduced ecological impacts within the river diminished towards pre-invasion levels due to a decrease in average mussel size (Strayer et al 2014a). The effects of these changes on feeding success and diet composition of larval fish in the Hudson River has not yet been studied, excepting one finding that larval shad consume zebra mussel veligers (Nack et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Zebra mussel (Dreissena polymorpha) affects the feeding ecology of early stage striped bass (Morone saxatilis) in the Hudson River estuary

2016

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Variability in the feeding ecology of young fishes over short and long time scales in estuaries is likely to affect population dynamics. We studied 14 years of early stage Striped Bass feeding ecology in the Hudson River Estuary over a 25-year time span, including years in which invasive zebra mussels markedly altered energy flow within the estuary. We predicted that feeding success would be low and that diet composition would be altered during years of high zebra mussel impact, particularly in upriver locations where mussels occur. Feeding success in the short term was indicated by volume of gut contents and in the long term by dry mass at length, i.e. condition; these measures were positively intercorrelated and varied significantly year to year. We tested for associations between condition and multiple biotic and abiotic environmental variables. There was a strong negative effect of zebra mussel grazing rate on condition in upriver locations and a weak positive effect in downriver locations. In upriver locations, condition was 33% higher when local salinity was high and zebra mussel grazing rates were low, whereas in downriver locations, condition was 35% higher when zebra mussel grazing rates and copepod abundance were high and local dissolved oxygen was low. Copepods, amphipods, mysids, and Leptodora constituted the highest prey-specific index of relative importance throughout the estuary. There was no evident effect of the zebra mussel invasion on diet composition. This long-term study corroborates the inferences of earlier studies that zebra mussels reduced early-stage striped bass growth rate.

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Diet Composition and Feeding Behavior of Larval American Shad,Alosa sapidissima(Wilson), after the Introduction of the Invasive Zebra Mussel,Dreissena polymorpha(Pallas), in the Hudson River Estuary, NY

Cited by 15 publications

References 52 publications

Long‐term variability and density dependence in Hudson River Dreissena populations

Long‐term variability and density dependence in Hudson River Dreissena populations

Veligers of the invasive bivalveLimnoperna fortuneiin the diet of indigenous fish larvae in a eutrophic subtropical reservoir

Zebra mussel (Dreissena polymorpha) affects the feeding ecology of early stage striped bass (Morone saxatilis) in the Hudson River estuary

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