The prevalence of the pea crab, Pinnotheres sinensis, and its impact on the condition of the cultured mussel, Mytilus galloprovincialis, in Jiaonan waters (Shandong Province, China)

Sun, Weiming; Sun, Shichun; Yuqi, Wang; Baowen, Yang; Song, Weibo

doi:10.1016/j.aquaculture.2005.07.037

Cited by 28 publications

(26 citation statements)

References 13 publications

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“…Data analysis "Prevalence" refers to the percentage of infested oysters, and "intensity" indicates the number of crabs per infested oyster (Sun et al, 2006). The oyster depth was used to generate depths-frequency distributions of both infested and non-infested oysters.…”

Section: Samplingmentioning

confidence: 99%

“…To quantify the effect of the associated crabs regarding the flesh of the oysters, we calculated the percent meat yield or Condition Index (CI), which indicates better conditions at higher values, according to the following equation (Sun et al, 2006): A Kruskal-Wallis test was used to compare the CI between different oyster depths. Subsequently and using the same test, we compared CI values between non-infested and infested oysters; in the latter case we analyzed the following categories of infestation: oyster not infested (O), oysters infested by males (M), by non-ovigerous adult females (F), by ovigerous females (OF), by heterosexual pairs with a non-ovigerous adult female (F+M), and heterosexual pairs with ovigerous females (OF+M).…”

Section: Samplingmentioning

confidence: 99%

“…Because of this situation, the implementation of adequate ecological indicators is important (Filgueira et al, 2013). The condition index (CI), one of those indicators, is a mathematical method used to determine the health status of bivalves (Austin et al, 1993;Mercado-Silva, 2005;Sun et al, 2006;Filgueira et al, 2013). Just as other health indicators, the CI relates the biomass with some other variable correlated to bivalve's size (Froese, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Just as other health indicators, the CI relates the biomass with some other variable correlated to bivalve's size (Froese, 2006). Some authors have used the CI to assess the effects of the association between pinnotherids and their bivalve hosts (Mercado-Silva, 2006;Sun et al, 2006). The genus Austinotheres was described by Campos (2002), and can be distinguished from other pinnotherids by the morphology of the third maxilliped; moreover, the second pair of pereopods is asymmetric.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Salas-Moya et al (2014) documented that A. angelicus invested a high amount of energy in offspring production (Salas-Moya et al, 2014). Since female weight increases considerably during reproduction, they can cause more damage to the oyster than the substantially smaller males (Sun et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Living with a crab: effect of Austinotheres angelicus (Brachyura, Pinnotheridae) infestation on the condition of Saccostrea palmula (Ostreoida, Ostreidae)

2014

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-Some members of the Pinnotheridae family exhibit close symbiotic relationships with bivalves, which may cause severe damage to the mollusk. The condition index (CI) is a tool that serves to evaluate the effect of biotic and abiotic factors on the morphology and physiology of mollusks, including those caused by symbiotic organisms. In the present study, we evaluated the effects of the infestation of the pinnotherid crab Austinotheres angelicus on the oyster Saccostrea palmula through monthly sampling (April to November 2012) in Punta Morales, Pacific coast of Costa Rica. A total of 245 oysters were analyzed, of which 38% were infested by the pinnotherid crab. Most of the oysters analyzed (92%) varied in depth between 1.5 and 15.0 mm; 89% of the infested oysters were in this depth range. The prevalence was positively correlated with the depth of the oyster. Our results revealed that crab infestation could reduce the CI by 11 to 33%. The obtained findings suggest that the infestation by A. angelicus provokes alterations of the flesh production of the oyster, especially when the association is with a pair of crabs including an ovigerous female. The association of A. angelicus with S. palmula is best described as facultative parasitism for male crabs and obligatory parasitism for females.

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Section: Samplingmentioning

confidence: 99%

Section: Samplingmentioning

confidence: 99%