Pontoporeia hoyi—a Direct Trophic Link between Spring Diatoms and Fish in Lake Michigan

Gardner, Wayne S.; Quigley, Michael A.; Fahnenstiel, Gary L.; Scavia, Donald; Frez, William A.

doi:10.1007/978-3-642-84077-7_34

Cited by 41 publications

(38 citation statements)

References 30 publications

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“…With the onset of thermal stratification later in spring and summer, nutrients in surface waters become depleted and productivity generally decreases. For this reason, the spring bloom represents an important event in the overall productivity of the southern Lake Michigan ecosystem (Brooks and Torke, 1977), and it is an important food source for invertebrates and fish (Gardner et al, 1990;Fitzgerald and Gardner, 1993).…”

Section: Abstract a Central Question Addressed By The Episodic Evenmentioning

confidence: 99%

Coastal Sediment Dynamics and River Discharge as Key Factors Influencing Coastal Ecosystem Productivity in Southeastern Lake Michigan

Lohrenz¹,

Fahnenstiel²,

Schofield³

et al. 2008

Oceanog.

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Section: Abstract a Central Question Addressed By The Episodic Evenmentioning

confidence: 99%

Coastal Sediment Dynamics and River Discharge as Key Factors Influencing Coastal Ecosystem Productivity in Southeastern Lake Michigan

Lohrenz¹,

Fahnenstiel²,

Schofield³

et al. 2008

Oceanog.

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“…Despite some coverage of the effects of high-quality food availability on the fecundity of pelagic copepods in the field (Pond et al 1996, Schmidt et al 1998, few studies have provided data on fatty acids (FA) in benthic organisms (e.g. Hanson et al 1985, Ghioni et al 1996 or addressed the role of food quality for the efficiency of energy transfer in benthic communities (Gardner et al 1990, Müller-Navarra et al 2000. Effects on embryogenesis are even less well understood.…”

Section: Introductionmentioning

confidence: 99%

Reproduction disorders in the benthic amphipod Monoporeia affinis: an effect of low food resources

Sundelin¹,

Rosa²,

Eriksson-Wiklund³

2008

Aquat. Biol.

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The aim of the present study was to investigate the influence of food availability on reproduction by comparing the response of reproductive biomarkers of a deposit-feeding amphipod Monoporeia affinis in 2 Swedish lentic environments (Lake Vänern and Lake Vättern) differing in eutrophication level, during the period between 1995 and 2002. In ultraoligotrophic Lake Vättern, a very low fecundity (living eggs female ) and the percent of females with dead broods were recorded. A significant negative correlation between fecundity and (1) undifferentiated eggs and (2) dead eggs and broods were obtained in both lakes. Amphipods collected in Lake Vättern in 2001 showed significantly lower concentrations of lipids -mainly triacylglycerols (TAG) -and of fatty acids (FAs) than amphipods collected in the more eutrophic Lake Vänern. Dramatically increased spring bloom diatom abundance in Lake Vättern resulted in increased fecundity and lipid and fatty acid concentrations (namely monounsaturated fatty acids, MUFA) and decreased embryo aberrations. A significant relationship between fecundity and diatom biovolume in Lake Vänern and total algal biovolume in Lake Vättern was found. No other alga taxa influenced the fecundity. In Lake Vättern total algal biovolume was negatively related to undifferentiated eggs. MUFA and saturated fatty acids (SFAs) seem to be important for vitellogenesis and oogenesis and also constitute fuel during embryogenesis. Other environmental variables in bottom waters (i.e. oxygen, pH and temperature) and sediment organic content did not influence the reproduction variables. Our findings strongly suggest a relationship between embryo aberrations (e.g. undifferentiated eggs and dead broods) and low food resources. KEY WORDS: Reproduction · Fatty acids · Embryo aberrations · Food deficiency · Monoporeia affinisResale or republication not permitted without written consent of the publisher OPEN PEN ACCESS CCESS

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“…Amphipods are common benthic animals in many lakes and are one of the most important food items for fish (Gardner et al 1990;Johnson and Widerholm 1992). Because they live mainly on the sediment surface of the lake bottom where organic matter accumulates, amphipods play a crucial role in channeling sedimented organic matter to organisms at higher trophic levels in lakes (Gardner et al 1990).…”

mentioning

confidence: 99%

“…Because they live mainly on the sediment surface of the lake bottom where organic matter accumulates, amphipods play a crucial role in channeling sedimented organic matter to organisms at higher trophic levels in lakes (Gardner et al 1990). Thus, amphipods are a potentially important component of material flows in lake ecosystems.…”

mentioning

confidence: 99%

Long‐term changes in the abundance of Jesogammarus annandalei (Tattersall) in Lake Biwa

Ishikawa

Narita

Urabe

2004

Limnology & Oceanography

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Changes in the abundance of an endemic amphipod, Jesogammarus annandalei, that inhabits the profundal zone of Lake Biwa were examined from 1966 to 1999. The abundance of J. annandalei increased suddenly during the mid1980s and thereafter stayed at a level that was sevenfold higher than that before 1980. Compared with the amphipod in the 1960s, both the clutch and body size of the matured individuals decreased during the 1990s, which suggests that per capita food supply decreased. Thus, the increase in the abundance of J. annandalei appeared to be due largely to an increase in their survival rate and not their growth or reproduction rates. In accord with the increase in amphipod abundance, the fishery catch of an endemic gobiid fish species that is dominant in the profundal zone and preys on this amphipod as a major food, decreased dramatically during the mid1980s. These results suggest that long-term changes in abundance of J. annandalei in Lake Biwa are mainly regulated by fish predation rather than by food supply.

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Pontoporeia hoyi—a Direct Trophic Link between Spring Diatoms and Fish in Lake Michigan

Cited by 41 publications

References 30 publications

Coastal Sediment Dynamics and River Discharge as Key Factors Influencing Coastal Ecosystem Productivity in Southeastern Lake Michigan

Coastal Sediment Dynamics and River Discharge as Key Factors Influencing Coastal Ecosystem Productivity in Southeastern Lake Michigan

Reproduction disorders in the benthic amphipod Monoporeia affinis: an effect of low food resources

Long‐term changes in the abundance of Jesogammarus annandalei (Tattersall) in Lake Biwa

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