Bad moves: Pros and cons of moving oysters – A case study of global translocations of Ostrea edulis Linnaeus, 1758 (Mollusca: Bivalvia)

Bromley, Cass; McGonigle, Ciarán; Ashton, Elizabeth C.; Roberts, Dai

doi:10.1016/j.ocecoaman.2015.12.012

Cited by 44 publications

(68 citation statements)

References 46 publications

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“…It is therefore important that resource managers and conservation scientists continue to study translocation and other management techniques, particularly among regional faunas because variability in life‐history traits (e.g. survival, growth and reproduction) coupled with habitat heterogeneity over landscapes can affect individuals and populations differently (Martone & Micheli, ; Bromley, McGonigle, Ashton, & Roberts, ). Increasing efforts on improving species translocation will also broaden its applicability to other purposes and give managers the option of translocating populations in response to emerging threats.…”

Section: Discussionmentioning

confidence: 99%

Section: Implications For Conservationmentioning

confidence: 99%

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Effects of translocation on survival and growth of freshwater mussels within a West Gulf Coastal Plain river system

Tsakiris

Randklev²,

Blair

et al. 2017

Aquatic Conservation

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Human‐mediated threats have led to the rapid decline of species inhabiting freshwater ecosystems, and among the groups most affected are freshwater mussels of the family Unionidae. As a result, species translocation is increasingly used in conservation programmes, yet experimental evidence documenting the success of this strategy is limited. The goal of this study was to examine the effects of translocation on survival probability, shell growth and body condition of a state‐threatened (Quadrula houstonensis) and common (Amblema plicata) species of freshwater mussel in the San Saba River, located in a West Gulf Coastal Plain river system, USA. Survival probability estimated from a joint live and dead encounter model was high (> 0.85) and varied by treatment for both species. However, differences in survival probability between resident and transplant treatments were relatively small for A. plicata (0.01) and Q. houstonensis (0.12). Generalized additive mixed models of yearly proportional growth and linear mixed models of Fulton's K index for A. plicata varied by treatment and were lower in transplant treatments. Shell growth of Q. houstonensis was unaffected by translocation; whereas, Fulton's K was higher in the transplant treatment. Methods used to translocate mussels were important factors leading to high survival and limited impacts to shell growth and body condition in this study. Differences in shell growth rate between treatments are attributed to possible differences in habitat quality between sites. Our results demonstrate that A. plicata and Q. houstonensis are tolerant of translocation, despite the broad assumption that translocation is detrimental to mussels. Thus, there is a continuing need to study species' responses to translocation to test and improve the ecological soundness of this strategy, particularly because climate change and other human stressors will exacerbate the need to implement conservation measures such as translocation in future decades.

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Section: Discussionmentioning

confidence: 99%

Section: Implications For Conservationmentioning

confidence: 99%

Effects of translocation on survival and growth of freshwater mussels within a West Gulf Coastal Plain river system

Tsakiris

Randklev²,

Blair

et al. 2017

Aquatic Conservation

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show abstract

“…Berntsson, Jonsson, Wängberg, & Carlsson, ; Maneiro, Pérez‐Parallé, Silva, Sánchez, & Pazos, ). Indeed, research on O. edulis reproduction was shelved following Marteilia refringens and Bonamia ostreae disease outbreaks from 1970 to 1980 that caused a rapid decline in the flat oyster industry in France (Buestel, Ropert, Prou, & Goulletquer, ) and throughout Europe (Bromley, McGonigle, Ashton, & Roberts, ; Laing, Walker, & Areal, ). However, O. edulis remains an emblematic species in Brittany (North West of France), with an annual production of 1,000–1,500 tons (Robert et al., ).…”

Section: Introductionmentioning

confidence: 99%

Larval development and fatty acid composition of Ostrea edulis (L.) fed four different single diets from conditioning to pre-settlement

González‐Araya

Robert

2018

Aquac Res

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Survival, growth and fatty acid composition of Ostrea edulis larvae (L.) fed four different single species, microalgal diets, Tisochrysis lutea (T), Chaetoceros neogracile (Cg), Skeletonema marinoi (Sm) or Tetraselmis suecica (Ts) from broodstock to pre‐settlement, were studied. Lower larval growth (5.5 μm to 6.5 μm/d) was recorded in progeny continuously fed single S. marinoi or T. suecica, whereas good growth was achieved with single T. lutea (7.8 μm/d). Larvae, originated from broodstock receiving Sm or Ts, exhibited growth compensation when fed a bispecific balanced diet (TCg). This did not occur when broodstock and larvae were fed Cg or T, for which single or mixed diets led to similar larval growth. Furthermore, survival was high (>90%) regardless of microalgal diet, except for larvae fed from broodstock to pre‐settlement T (53%) or Ts (2%). There were significant differences in 20:5 (n‐3) and 22: 6 (n‐3) contents in polar and neutral fractions of O. edulis expelled larvae dependent on broodstock diet, as well as throughout larval development, but no clear trend was apparent when comparing fatty acid (FA) relative composition of both fractions of O. edulis larvae fed different diets at release or prior to settlement. In contrast, such correlation occurred when FA was expressed in absolute content but exclusively for larvae‐fed single diets and was particularly noticeable between 22: 6 (n‐3) and growth and survival. In the present work, broodstock nutritional deficiencies have been revealed in O. edulis progeny, compensated thereafter by feeding the larvae a mixed diet, and in this balanced condition, no obvious relation with larval development indicators was found with main fatty acid contents.

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“…Bromley et al 2016). Biological invasions can include both hosts and their parasites and have been widely recognised as potential major threats to marine biodiversity and in some cases, this has caused significant economic losses (Pimentel et al 2001; Prenter et al 2004).…”

Section: Effects Of the Environment On Diseases Of Corals And Molluscsmentioning

confidence: 99%

“…Responding to the demand, dwindling native cultures were sometimes replaced with similar species introduced from other countries – with varying success (e.g. Wolff et al 2002; Buestel et al 2009; Bromley et al 2016). …”

Section: Effects Of the Environment On Diseases Of Corals And Molluscsmentioning

confidence: 99%

The roles of endolithic fungi in bioerosion and disease in marine ecosystems. II. Potential facultatively parasitic anamorphic ascomycetes can cause disease in corals and molluscs

et al. 2017

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Anamorphic ascomycetes have been implicated as causative agents of diseases in tissues and skeletons of hard corals, in tissues of soft corals (sea fans) and in tissues and shells of molluscs. Opportunist marine fungal pathogens, such as Aspergillus sydowii, are important components of marine mycoplankton and are ubiquitous in the open oceans, intertidal zones and marine sediments. These fungi can cause infection in or at least can be associated with animals which live in these ecosystems. A. sydowii can produce toxins which inhibit photosynthesis in and the growth of coral zooxanthellae. The prevalence of many documented infections has increased in frequency and severity in recent decades with the changing impacts of physical and chemical factors, such as temperature, acidity and eutrophication. Changes in these factors are thought to cause significant loss of biodiversity in marine ecosystems on a global scale in general, and especially in coral reefs and shallow bays.

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Bad moves: Pros and cons of moving oysters – A case study of global translocations of Ostrea edulis Linnaeus, 1758 (Mollusca: Bivalvia)

Cited by 44 publications

References 46 publications

Effects of translocation on survival and growth of freshwater mussels within a West Gulf Coastal Plain river system

Effects of translocation on survival and growth of freshwater mussels within a West Gulf Coastal Plain river system

Larval development and fatty acid composition of Ostrea edulis (L.) fed four different single diets from conditioning to pre-settlement

The roles of endolithic fungi in bioerosion and disease in marine ecosystems. II. Potential facultatively parasitic anamorphic ascomycetes can cause disease in corals and molluscs

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