Continued disappearance of the benthic amphipod <i>Diporeia</i> spp. in Lake Michigan: is there evidence for food limitation?

Nalepa, Thomas F.; Fanslow, David L.; Foley, Andrew J.; Lang, Gregory A.; Eadie, Brian J.; Quigley, Michael A.

doi:10.1139/f05-262

Cited by 88 publications

(86 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is apparent in both the linear regression model (Figure 4) and the chi-square analysis ( Figure 5). The overall increasing trend is consistent with the hypothesis that the invasion of zebra mussels in the Great Lakes has caused Diporeia's population crash (Nalepa et al, 2006). Zebra and quagga mussels invaded the Great lakes in the late 1980's (Nalepa et al, 1998); Diporeia populations have crashed in most areas since that time.…”

Section: Discusssupporting

confidence: 84%

“…Hence, an increase in infected Diporeia tissue might suggest that competition for food may have been a secondary effect caused by the primary effect, namely disease. The correlation between population decline in Diporeia, increased pathogenic infection and disease, and purported increased population of zebra mussels (Nalepa et al 2006) supports this hypothesis.…”

Section: Discussmentioning

confidence: 75%

See 1 more Smart Citation

Decline of Diporeia in Lake Michigan: Was Disease Associated With Invasive Species the Primary Factor?

Cave¹,

Strychar²

2014

IJB

View full text Add to dashboard Cite

Populations of the freshwater amphipod Diporeia spp. have steadily declined in Lake Michigan since the late 1980's. Prior studies have provided inconclusive data on possible reasons for their decline. However, some authors suggest that food competition and/or diseases associated with aquatic invasive species (AIS), such as zebra mussels (Dreissena polymorpha), may have caused the collapse of Diporeia. In this project, the possibility of pathogens as the cause of the collapse of Diporeia has been examined. Linear regression modeling show a significant positive linear association between percent of Diporeia exhibiting a pathogenic infection and year (r=0.7202264, p≤0.0124). Chi-square testing for independence was also used to test if there was an association between year and percent infection (X 2 = 50, df = 10, p≤0.0001), implying significant association between year and infection. Hence, the introduction of zebra mussels and the diseases they carry may have been the root cause for the decline of Diporeia. Future research is needed to examine other invasive species for similar pathogens, including live studies showing direct causality between zebra mussels and the decline in Diporeia.

show abstract

Section: Discusssupporting

confidence: 84%

Section: Discussmentioning

confidence: 75%

Decline of Diporeia in Lake Michigan: Was Disease Associated With Invasive Species the Primary Factor?

Cave¹,

Strychar²

2014

IJB

View full text Add to dashboard Cite

show abstract

“…Dreissenid mussels now also help to move phytoplankton production to the fish community in Lakes Ontario, Erie, Michigan and Huron, where they are replacing Diporeia spp. (Dermott et al 2005, McNickle et al 2006, Nalepa et al 2006. In response, the distributions and diets of fish such as alewife and lake whitefish Coregonus clupeaformis have been shifting, and diets have been broadening to include alternative prey such as dreissenids and mysids (O'Gorman et al 2000, Pothoven et al 2001, Hoyle et al 2003, Hondorp et al 2005.…”

Section: Introductionmentioning

confidence: 99%

Field assessment of condition indices (nucleic acid and protein) in Mysis diluviana

Johannsson¹,

Bowen²,

Arts³

et al. 2009

Aquat. Biol.

View full text Add to dashboard Cite

Mysis diluviana, the opossum shrimp, is a key link between offshore benthic and pelagic foodwebs in the Laurentian Great Lakes. Nucleic acid and protein indices (RNA/DNA, DNA/protein, %protein, DNA/weight), which have been related to growth and protein synthesis rates, were assessed as measures of mysid condition. We examined autumn inter-annual and spatial patterns in these metrics in juvenile and adult female M. diluviana in Lake Ontario from 2001 to 2005. Males were not included because initial results of the present study indicated that larger, mature males entered a physiological decline in autumn. Nucleic acid/protein indices had a sufficient range and sensitivity to detect differences among years and habitats. In years when M. diluviana was in poor condition, nucleic acid and protein indices were similar to laboratory values of animals with low growth rates, values which were slightly above the nucleic acid and protein values of fasting animals. Mysids which were deemed to be in better condition in Lake Ontario had similar condition indices to those in Lake Huron. When differences existed, inshore mysids tended to be in poorer condition than offshore mysids, supporting the hypothesis that improved food resources may encourage offshore movement of mysids during the growing season. Zooplankton areal biomass, and female % total lipids and fecundity were not correlated with the nucleic acid and protein condition indices. However, key essential fatty acids and total saturated fatty acids had significant associations with nucleic acid and protein indices; this indicates that food quality is an important determinant of condition in M. diluviana.

show abstract

“…Interestingly, a similar large-scale decline has been observed for a related amphipod species (Diporeia spp.) in the Great Lakes of North America, where populations declined by 90% from 1993 to 2002 (Nalepa et al 2006). Several plausible hypotheses have been suggested for the drastic declines: competition, new anthropogenic substances, hypoxia, predation and food limitation (Nalepa et al 2006, Watkins et al 2007.…”

Section: Introductionmentioning

confidence: 99%

“…in the Great Lakes of North America, where populations declined by 90% from 1993 to 2002 (Nalepa et al 2006). Several plausible hypotheses have been suggested for the drastic declines: competition, new anthropogenic substances, hypoxia, predation and food limitation (Nalepa et al 2006, Watkins et al 2007. Even if drastic declines of related benthic species in different habitats are not caused by the same factor, it indicates that amphipods are very sensitive to environmental change.…”

Section: Introductionmentioning

confidence: 99%

Effects of warming and shifts of pelagic food web structure on benthic productivity in a coastal marine system

Wiklund¹,

Dahlgren²,

Sundelin³

et al. 2009

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

It has been predicted that climate change will lead to increased temperature and precipitation in northern latitudes, which in turn may lead to brownification of coastal sea areas. This will increase the importance of the heterotrophic microbial food web in areas like the northern Baltic Sea. Such a structural change in the pelagic food web would hamper benthic productivity, since microheterotrophs have lower settling rates than phytoplankton. We tested how variation in temperature and alteration of the pelagic food web structure affected the productivity of a key benthic species, the amphipod Monoporeia affinis, and the pelagic-benthic food web efficiency (FWE). Using water from the northern Baltic Sea, a mesocosm experiment was performed in which the temperature was altered by 5°C. The structure of the pelagic food web changed from one based on algae to one based on bacteria. Amphipod productivity was 3 times higher and FWE was 25 times higher in the algae than in the bacteria-based food web, showing that an altered pelagic food web will have severe effects on benthic productivity. Temperature variation, on the other hand, did not cause any changes in either growth of M. affinis or FWE. Our data indicate that indirect effects of climate change, leading to structural changes in the pelagic food web, will have much more severe effects on benthic productivity than the direct effect of increased temperature.KEY WORDS: Climate change · Altered pelagic food web structure · Decreased benthic productivity · Pelagic-benthic coupling · Monoporeia affinis Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 396: [13][14][15][16][17][18][19][20][21][22][23][24][25] 2009 Monoporeia affinis is a deposit feeder, which preferably feeds on fresh, newly settled phytoplankton (Aljetlawi et al. 2000). Between periods of phytoplankton blooms, the amphipods can survive without food, or subsist on low quality food, by using energy stored as lipids. This strategy is facilitated by low temperatures in their soft-bottom habitat (Lehtonen 1994). Their main period of growth is in the spring after the phytoplankton bloom (Cederwall 1977, Lehtonen & Andersin 1998. The effects of seasonal sedimentation patterns on growth and population dynamics of benthic organisms demonstrate the importance of the pelagic-benthic coupling (Karlson et al. 2007).Basal pelagic production (phytoplankton primary production + bacterial production) in the Gulf of Bothnia varies along a north-south gradient from ~30 to 65 g C m -2 yr -1 (Samuelsson et al. 2006). In the Bothnian Bay (extreme north), about 50% of the basal production is contributed by bacteria and 50% by phytoplankton. In the Bothnian Sea (south), 75% of the production is contributed by phytoplankton and 25% by bacteria. The reason for relatively high bacterial production in the north is a combination of low nutrient availability and a high inflow of allochthonous organic C (Sandberg et al. 2004). This causes an uncoupling of the bacterial and ...

show abstract

Continued disappearance of the benthic amphipod Diporeia spp. in Lake Michigan: is there evidence for food limitation?

Cited by 88 publications

References 55 publications

Decline of Diporeia in Lake Michigan: Was Disease Associated With Invasive Species the Primary Factor?

Decline of Diporeia in Lake Michigan: Was Disease Associated With Invasive Species the Primary Factor?

Field assessment of condition indices (nucleic acid and protein) in Mysis diluviana

Effects of warming and shifts of pelagic food web structure on benthic productivity in a coastal marine system

Contact Info

Product

Resources

About