Functional responses and scope for growth of two non‐indigenous bivalve species in the Sacca di Goro (northern Adriatic Sea, Italy)

Sgro, Lucia; Cristina, Maria Luisa; Angonese, Annagloria; Basso, Silvia; Mistri, Michele

doi:10.1080/11250000509356677

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…At each time point, four randomly chosen clams from each tank (two controls and two treatments) were taken for physiological measurements. Measurement methods are fully described in Sgro et al (2005a), and followed the procedures outlined by Widdows and Staff (1997). Briefly, clearance rate was measured in plastic beakers (2 l) of filtered (0.45 lm) seawater, with two clams per beaker plus one control (without clams).…”

Section: Physiological Measurementsmentioning

confidence: 99%

Effect of copper on the scope for growth of clams (Tapes philippinarum) from a farming area in the Northern Adriatic Sea

Cristina

Mistri

2007

Marine Environmental Research

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Section: Physiological Measurementsmentioning

confidence: 99%

Effect of copper on the scope for growth of clams (Tapes philippinarum) from a farming area in the Northern Adriatic Sea

Cristina

Mistri

2007

Marine Environmental Research

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“…Large mats of A. senhousia can indeed suffocate the hosting substrate, isolating the benthos from the overlying water column (Yamamuro et al, 2010). Moreover, A. senhousia, being an efficient suspension feeder (Sgrò et al, 2005), can severely reduce the food available for native suspension feeder bivalves, hence possibly promoting interspecific competition for resources (Crooks, 2001). On the other hand, byssal mats created by A. senhousia act as novel structures that can enhance habitat heterogeneity, offering shelter for different benthic organisms (Mistri, 2003(Mistri, , 2004aMistri et al, 2004;Munari, 2008;Katsanevakis et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Differential feeding rates of native and alien predators on the invasive Asian date mussel Arcuatula senhousia (Benson in cantor, 1842) in a Mediterranean coastal lagoon

et al. 2023

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The alien Asian date mussel Arcuatula senhousia inhabits several coastal environments worldwide. This species can form dense mats where individuals attach through byssus threads, thus altering the structure, functioning and biodiversity of the native communities. We investigated the feeding preference of different predators on this alien species in a Mediterranean coastal lagoon. To do this, a mesocosm experiment was conducted using two crab species (the Mediterranean green crab Carcinus aestuarii) and the Say mud crab Dyspanopeus sayi, and one gastropod, the banded dye-murex Hexaplex trunculus as predators of A. senhousia with or without byssus mats. Our data suggest that C. aestuarii is a more effective predator against A. senhousia than D. sayi, and that H. trunculus is almost ineffective. A possible implication of this result is the potential use of the native crab C. aestuarii for limit the formation of the byssus mats, thus mitigating their potential negative effects on the native communities.

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“…Another possibility is, feeding behaviour in tuatua and cockles could have alternated seasonally. Sgro et al (2005) found feeding in two species of marine bivalve was affected negatively in some seasons when there were; low abundances of food in the water column, low qualities of food or high turbidity. Fluctuations seen in reaction time over seasons in the current study could be related to food availability and feeding behaviour or a combination of these factors.…”

Section: Behavioural Responsesmentioning

confidence: 97%

Morphological, histological and behavioural change in two species of marine bivalves in response to environmental stress

Damodaran¹

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<p>Mass mortality events (MMEs) occur when a disproportionate part of a population dies in a single event. The frequency of MMEs is increasing globally. In the past, MMEs have been linked to starvation, changes in environmental conditions and disease outbreaks. However, it is often unclear what the underlying cause of these events are. In New Zealand several MMEs have occurred in the bivalve species Austrovenus stutchburyi (Wood 1828) and Paphies subtriangulata (Wood 1828) with little known about the cause. Both of these species are recreationally harvested for consumption in New Zealand and have cultural significance. In order to better understand MMEs in these species we must first gain a better understanding of stress expression. Bivalves have few observable features and it is difficult to classify them as healthy or stressed without investigating immune change which can be quite costly. Some research has looked into how different cell types change in response to pollutants but few studies have researched how cell types change in response to environmental conditions. The aim of this research was to find novel ways of assessing if shellfish were healthy or stressed. Little is known about how shellfish respond to environmental stressors and this is the first study to look at several novel stress expressions simultaneously, in New Zealand shellfish. Histological, morphological and behavioural responses were measured in both A. stutchburyi and P. subtriangulata after treatment with increased temperature, lowered salinity and increased fine sediment input for up to 5 weeks. Temperature stress was the main stressor for P. subtriangulata (85% of overall mortality occurred in the heat treatment), salinity was the main stressor for A. stutchburyi (46% of overall mortality occurred in the salinity treatment), and fine sediment stress did not seem to have an effect on either species in this study. Overall, A. stutchburyi were more robust to the treatments, but low mortality occurred in both species (≤8%). Mortality correlated with time of year and was believed to be related to spawning in P. subtriangulata (48% of overall mortality occurred from October-November). Both species had a single histological marker, in A. stutchburyi this was change in gill morphology, and in P. subtriangulata this was change in digestive gland morphology. Several individual morphological features were identified as potential stress markers in A. stutchburyi and P. subtriangulata. Additionally, when removed from aquaria P. subtriangulata had impeded foot retraction time in the salinity treatment. The differences in stress markers shows the diversity of reactions to stressors even within New Zealand bivalves. This study provides a useful baseline in investigating how P. subtriangulata and A. stutchburyi respond to environmental stress. The histological slides produced during this investigation are an invaluable resource that can be used in future studies and in comparisons with archived specimens from known MMEs. Knowing how to detect signs of stress in these bivalves will help to predict MMEs in the future and aid in implementing processes to combat these events.</p>

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Functional responses and scope for growth of two non‐indigenous bivalve species in the Sacca di Goro (northern Adriatic Sea, Italy)

Cited by 10 publications

References 28 publications

Effect of copper on the scope for growth of clams (Tapes philippinarum) from a farming area in the Northern Adriatic Sea

Effect of copper on the scope for growth of clams (Tapes philippinarum) from a farming area in the Northern Adriatic Sea

Differential feeding rates of native and alien predators on the invasive Asian date mussel Arcuatula senhousia (Benson in cantor, 1842) in a Mediterranean coastal lagoon

Morphological, histological and behavioural change in two species of marine bivalves in response to environmental stress

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