Effect of the western pearlshell mussel <i>Margaritifera falcata</i> on Pacific lamprey <i>Lampetra tridentata</i> and ecosystem processes

Limm, M.; Power, Mary E.

doi:10.1111/j.1600-0706.2010.18903.x

Cited by 31 publications

(25 citation statements)

References 56 publications

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“…(c)], also suggests that L T is a poor proxy for ammocoete age (Kelso & Todd, ; Quintella et al ., ). Entosphenus tridentatus ammocoetes were observed to have relatively low mean C:N ratios (mean = 5·0) in two published studies (Limm & Power, ; Uh et al ., ), which were similar to the lowest measured values in this study (4·1) and had a limited range (4·6–5·1). These values for E. tridentatus also suggest an all‐or‐none lipid accumulation strategy similar to L. aepyptera in this study, but require confirmation over a broader range of streams and seasons.…”

Section: Discussionmentioning

confidence: 99%

Using stable isotopes and C:N ratios to examine the life‐history strategies and nutritional sources of larval lampreys

Evans

Bauer

2015

Journal of Fish Biology

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Natural abundance stable-isotope analysis (δ(13)C and δ(15)N) and C:N ratios were used to study the ammocoete phase of two common non-parasitic lamprey species (least brook lamprey Lampetra aepyptera and American brook lamprey Lethenteron appendix) in two tributaries of the Ohio River (U.S.A.). The C:N ratios suggest that each species employs different lipid accumulation strategies to support its metamorphosis and recruitment into an adult animal. Ammocoete δ(13)C values generally increased with increasing C:N values. In contrast to δ(13)C, ammocoete δ(15)N values were weakly related to the total length (LT) in L. aepyptera, but positively correlated to both LT and C:N ratios in L. appendix. In L. appendix, C:N also correlated positively with LT, and presumably age. A Bayesian mixing model using δ(13)C and δ(15)N was used to estimate nutritional subsidies of different potential food resources to ammocoetes at each site. The models suggested that although nutritional subsidies to ammocoetes varied as a function of site, ammocoetes were generally reliant on large contributions (42-62% at three sites) from aquatic plants. Contributions from aquatic sediment organic matter were also important at all sites (32-63%) for ammocoetes, with terrestrially derived plant materials contributing smaller amounts (4-33%). These findings provide important insights into the feeding ecology and nutrition of two species of lampreys. They also suggest that similar and other quantitative approaches are required to (1) fully understand how the observed stable-isotopes ratios are established in ammocoetes and (2) better assess ammocoete nutritional subsidies in different natal streams.

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Section: Discussionmentioning

confidence: 99%

Using stable isotopes and C:N ratios to examine the life‐history strategies and nutritional sources of larval lampreys

Evans

Bauer

2015

Journal of Fish Biology

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“…The food items given have been used for feeding larval lampreys in past applications. They were commercially available algae wafers (Kyorin Food Industries, Himeji, Japan: Shirakawa et al 2009), leaves collected from common birch (Betulaceae), maple (Sapindaceae), and willow (Salicaceae) deciduous trees that occurred in the riparian zone of Eagle Creek (Shirakawa et al 2009;Limm and Power 2011), salmon carcass analog pellets (Bioanalog salmon custom diet, Bio-Oregon, Longview, Washington), and a combination of commercially available baker's yeast and larval fish food (Gemma Wean, Bio-Oregon; 9:1 ratio yeast : larval fish food: Polkinghorne et al 2001;McGree et al 2008). Algae wafers, leaves, and salmon carcass analogs were ground into a powder (leaves were dried at 100 • C before grinding).…”

Section: Methodsmentioning

confidence: 99%

“…Suspensions of leaves and water and algae and water were soaked for approximately 24 h, while the more soluble treatments of salmon analog and of yeast and larvae fish food suspensions were soaked for approximately 10-15 min. Soaking presumably increased the chance that food sank and therefore was available to filter-feeding larval lampreys rather than floating and flowing out of the tank (Limm and Power 2011;Rose and Mesa 2012). Water flow was halted during and after feeding and remained off for approximately 4-6 h to further reduce loss of food.…”

Section: Methodsmentioning

confidence: 99%

Feeding and Growth of Larval Pacific Lamprey Reared in Captivity

Jolley

Silver

et al. 2015

N American J Aquac

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Pacific Lampreys Entosphenus tridentatus are declining in the Columbia River basin as well as in much of their broader range. To mitigate for reductions in abundance, strategies such as hatchery propagation and captive rearing of lamprey larvae are currently being considered. We conducted a series of experiments using captive larval Pacific Lampreys at Eagle Creek National Fish Hatchery to investigate the effect of different food types and different food concentrations on the growth of larvae. In our first experiment, we evaluated the growth of larvae (TL range, 59–145 mm) given four different food types (algae, leaves, yeast–larval fish food, and salmon carcass analogs) and a control group that was not fed. Assimilation of food types was evaluated by tracking unique stable isotope signatures of δ13C and δ15N within larval tissues. Results from experiment 1 indicated that lampreys fed a diet of salmon carcass analog or algae had positive growth (up to 0.16 mm/d and 42% proportional change in length) over approximately 6 months. Isotopic analyses of larval tissues showed unique signatures that matched those of their specific food treatment. Based on the results of experiment 1, we conducted a second experiment to evaluate the growth of larvae fed four different quantities of salmon carcass analog. Results from this experiment indicated larval growth rate increased with increasing rations of food, but positive growth was observed in all feeding treatments. The highest dose of salmon carcass analog resulted in the highest growth (up to 0.15 mm/d and 36% proportional change in length) over 6 months. We successfully reared larval Pacific Lampreys in captivity with minimal mortality and positive growth, which highlights the potential to use captive rearing and propagation as a conservation tool for this ecologically and culturally important species.

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“…Freshwater mussels (order Unionoida) are typical components of aquatic ecosystems and are important as filter feeders and bioturbators (Vaughn and Hakenkamp 2001, Spooner and Vaughn 2006, Vaughn et al 2007, Allen and Vaughn 2011, Limm and Power 2011. Because of a variety of anthropogenic pressures, such as habitat destruction and fragmentation from the construction of large dams, mussels are among the most threatened faunal groups worldwide (Strayer et al 2004).…”

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confidence: 99%

Dispersal of larvae ofMargaritifera laevisby its host fish

et al. 2014

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Local aggregations of unionoids (mussel beds) represent subpopulations constituting a riverine metapopulation and are presumed to be linked by dispersal of parasitic mussel larvae (glochidia) on host fishes. We examined movement patterns of Masu Salmon (Oncorhynchus masou masou), the obligate host fish for the freshwater pearl mussel Margaritifera laevis, during the mussel's parasitic period to determine the dispersal potential of glochidia via host fish in the Shubuto River system, Hokkaido, Japan. We conducted a mark-recapture study in a 650-m river section to describe the distance and directionality of host fish movement, and we used fyke net sampling to quantify the number of host fish moving from mainstem rivers to tributaries. Most individuals of Masu Salmon captured in the study were infected with glochidia of M. laevis. The displacement distance of infected fishes ranged from 37.5 m downstream to 512.5 m upstream (mean = 36.5 m upstream from marking location). The dispersal kernel based on a diffusion-advection model represented a leptokurtic distribution with a fat-tailed upstream bias, but most recaptured fish remained near the initial capture location. Movement of fish from mainstem rivers to tributaries was strongly affected by differences in water temperature among tributaries. Most individuals moved to cooler tributaries, but tributaries did not support populations of M. laevis. These results suggest that glochidial dispersal via host fish is important for local recruitment and upstream dispersal, but dispersal to tributaries may be a source of mortality for M. laevis.

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Effect of the western pearlshell mussel Margaritifera falcata on Pacific lamprey Lampetra tridentata and ecosystem processes

Cited by 31 publications

References 56 publications

Using stable isotopes and C:N ratios to examine the life‐history strategies and nutritional sources of larval lampreys

Using stable isotopes and C:N ratios to examine the life‐history strategies and nutritional sources of larval lampreys

Feeding and Growth of Larval Pacific Lamprey Reared in Captivity

Dispersal of larvae ofMargaritifera laevisby its host fish

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