Effects of substrate size and cleaning regime on growth and survival of captive-bred juvenile freshwater pearl mussels, Margaritifera margaritifera (Linnaeus, 1758)

Lavictoire, Louise; Moorkens, Evelyn; Ramsey, Andrew D.; Sinclair, William; Sweeting, R. A.

doi:10.1007/s10750-015-2445-4

Cited by 14 publications

(33 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The application of this method to M. auricularia has produced three cohorts of juveniles (2014, 2015, and 2016); however, a high mortality was observed during the first year of study. Lavictoire et al (), working on M. margaritifera , found that this method yields a relatively low number of individuals and requires intensive management, as has been the case also for M. auricularia . Young and Williams () suggested that the early juvenile stage seems to be the most vulnerable to disturbances, so the stability that this method provides seems fundamental.…”

Section: Discussionmentioning

confidence: 96%

“…In this study, at 100 days the highest recorded survival was almost 60%. Lavictoire et al (), comparing survival rates of different freshwater mussels, showed that mortality can be variable with survival rates from 10 to 80% after 100–200 days in captivity. In fact, the high mortality experienced by juveniles during the first year remains an important obstacle to the successful development of captive breeding of freshwater mussels.…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, Gum et al () stated that the captive breeding of endangered freshwater mussels can be an efficient tool to maintain the evolutionary potential of their populations, which otherwise would not resist long enough to benefit from the restoration of their habitats. Several projects have previously focused on captive breeding of several species of freshwater mussels, with significant advances during the past two decades (Hastie & Young, ; Kovitvadhi, Kovitvadhi, Sawangwong, Thongpan, & Machado, ; Lavictoire, Moorkens, Ramsey, Sinclair, & Sweeting, ; Preston et al, ; Schmidt & Vandré, ). Some studies tested different types of diet or substrate, as various culturing systems, to achieve the optimal conditions for the development of juvenile mussels (Barnhart, ; Beck & Neves, ; Eybe, Thielen, Bohn, & Sures, , ; Gatenby, Neves, & Parker, ; Gatenby, Parker, & Neves, ; Liberty, Ostby, & Neves, ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Captive breeding of Margaritifera auricularia (Spengler, 1793) and its conservation importance

Nakamura

Elbaile²,

Salinas³

et al. 2019

Aquatic Conservation

View full text Add to dashboard Cite

Margaritifera auricularia is one of the most endangered freshwater mussels (Bivalvia, Unionida) in the world. Since 2013, the abundance of this species in the Ebro River basin (Spain) has sharply declined, driving the species to the verge of regional extinction. Therefore, any management measures that might facilitate the recovery of this species would be essential for its conservation. During 2014–2016, captive breeding of M. auricularia allowed the production of >106 juveniles, out of which 95% were released into the natural environment, and 5% were grown in the laboratory under controlled conditions. The aim of this experimental work was to establish the best culture conditions for the survival and growth of M. auricularia juveniles in the laboratory. The experiment was divided into two phases: phase I, in which juveniles recently detached from fish gills were cultured in detritus boxes until they reached a shell length of 1 mm; and phase II, in which these specimens were transferred to larger aquaria to grow up to 3–4 mm. The best experimental conditions for juvenile survival and growth corresponded to treatments in glass containers at a density of 0.2 ind. L−1, using river water, with added substrate and detritus, enriched with phytoplankton, and avoiding extra aeration. The highest survival and growth rates attained, respectively, values of c. 60% at 100 days and 2.56 mm in shell length at 30–32 weeks. This is the first study to report on the long‐term survival and growth of juvenile M. auricularia in the laboratory, providing essential information in order to implement future conservation measures addressed at reinforcing the natural populations of this highly threatened species in European water bodies.

show abstract

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Captive breeding of Margaritifera auricularia (Spengler, 1793) and its conservation importance

Nakamura

Elbaile²,

Salinas³

et al. 2019

Aquatic Conservation

View full text Add to dashboard Cite

show abstract

“…Different species reach this length at different times: 90 days in H. myersiana (Kovitvadhi et al, ), 130 days in U. imbecillis (Trump, ), 240 days in M. margaritifera (this study) [although it has also been reported to occur at 4.5 mm (Schartum et al, )], and 180 days in U. mancus (this study). However, in another M. margaritifera study, it has been reported that the inner gill begins to bend at 16 months and the complete gills (inner and outer) are formed at three years (Lavictoire, Moorkens, Ramsey, Sinclair, & Sweeting, ).…”

Section: Discussionmentioning

confidence: 99%

“…In the case of M. margaritifera , the only member of the Margaritiferidae studied, these organs developed much more slowly. Interestingly although, cultured M. margaritifera juveniles at 360 days had a mean shell length twice that of wild populations (Lavictoire, Moorkens, Ramsey, Sinclair, & Sweeting, ). During the winter, wild populations stop growing and thus are delayed, whereas our cultured juveniles were grown at a constant temperature of 17 °C.…”

Section: Discussionmentioning

confidence: 99%

Who wins in the weaning process? Juvenile feeding morphology of two freshwater mussel species

Araújo

Campos²,

Feo³

et al. 2017

Journal of Morphology

View full text Add to dashboard Cite

The global decline of freshwater mussels can be partially attributed to their complex life cycle.Their survival from glochidium to adulthood is like a long obstacle race, with juvenile mortality as a key critical point. Mass mortality shortly after entering into a juvenile state has been reported in both wild and captive populations, thus weakening the effective bivalve population. A similar phenomenon occurs during metamorphosis in natural and hatchery populations of juvenile marine bivalves. Based on a morphological analysis using scanning electron microscopy of newly formed juveniles of the freshwater species Margaritifera margaritifera (L.) (Margaritiferidae) and Unio mancus Lamarck (Unionidae), we show that a second metamorphosis, consisting of drastic morphological changes, occurs that leads to suspension feeding in place of deposit feeding by the ciliated foot. We hypothesize that suspension feeding in these two species improves due to a gradual development of several morphological features including the contact between cilia of the inner gill posterior filaments, the inner gill reflection, the appearance of the ctenidial ventral groove and the formation of the pedal palps. Regardless of the presence of available food, a suspension feeding mode replaces deposit feeding, and juveniles unable to successfully transition morphologically or adapt to the feeding changes likely perish. K E Y W O R D Sbiodiversity conservation, development, juvenile mortality, metamorphosis

show abstract

Experimental quantification of multiple point‐source pollution effects on juvenile freshwater mussels in a stream exposure gradient

Barák

Jahelková

Simon

et al. 2022

Aquatic Conservation

View full text Add to dashboard Cite

1. Population declines in freshwater mussels (Unionida) resulting from failed recruitment, together with episodic water pollution potentially leading to juvenile mussel mortality, are often suspected (but rarely well documented), even in the most strictly protected aquatic areas.2. The aim of this study was to test a robust design for an in situ investigation of the water pollution effects on juvenile freshwater pearl mussel (FPM, Margaritifera margaritifera) in the protected Malše River (Czech Republic), which acts as a model system. A 30-km river reach was delineated to include a section with previously recorded episodic multiple point-source pollution events, as well as downstream and upstream control sections. Juvenile FPMs in open water mesh cages were exposed to river water at 15 sites in 42 exposure units (342 juveniles in individual chambers), and their survival and shell growth were assessed after a 33-day period of low-flow and high-temperature conditions. The main physicochemical indicators related to municipal water pollution were measured weekly.3. The study results confirmed significantly impaired water quality indicated by episodic changes in total ammonia nitrogen (up to 1.037 mg L À1 ), total phosphorus (up to 0.516 mg L À1 ) and oxygen saturation (down to 75.0%) in the impaired section. While the growth of FPM (corrected for temperature effects) was significantly increased (shell length increment: 32.7 ± 9.7%impaired, 26.4 ± 10.0%control sections; mean ± SD), the survival (mean ± SD) of juveniles was significantly decreased in the impaired section (86.4 ± 12.5%) compared with the control sections (97.4 ± 5.7%).4. This study has demonstrated the capacity of applying a caged bivalve model at a fine spatial scale within a longitudinal river profile to document the impacts of water pollution. The methodology applied here may provide a useful tool for assessing and improving the level of water quality management and is applicable in FPM action plans and stream biotope conservation in general.

show abstract

Effects of substrate size and cleaning regime on growth and survival of captive-bred juvenile freshwater pearl mussels, Margaritifera margaritifera (Linnaeus, 1758)

Abstract: . (2015) Effects of substrate size and cleaning regime on growth and survival of captive-bred juvenile freshwater pearl mussels, Margaritifera margaritifera (Linnaeus, 1758).

Cited by 14 publications

References 17 publications

Captive breeding of Margaritifera auricularia (Spengler, 1793) and its conservation importance

Captive breeding of Margaritifera auricularia (Spengler, 1793) and its conservation importance

Who wins in the weaning process? Juvenile feeding morphology of two freshwater mussel species

Experimental quantification of multiple point‐source pollution effects on juvenile freshwater mussels in a stream exposure gradient

Contact Info

Product

Resources

About