Comparison and history of<i>Polydora websteri</i>and<i>P. haswelli</i>(Polychaeta: Spionidae) as mud-blister worms in New Zealand shellfish

Read, Geoffrey B.

doi:10.1080/00288330.2010.482969

Cited by 48 publications

(48 citation statements)

References 34 publications

(46 reference statements)

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“…nov. the largest specimen measured 16.2 mm long and 1.1 mm wide at chaetiger 5 and had 111 chaetigers. Polydora haswelli has been reported as similar in size to P. neocaeca from New Zealand (Read 2010) and Japan (Sato-Okoshi & Abe in press), and as larger in size from South Korea . P. onaga waensis sp.…”

Section: Taxonomymentioning

confidence: 98%

“…Mor phological, biological and ecological approaches are mainly used to identify polydorid species, along with differences in methyl green staining (Read 2010) and information from allozyme analyses (Manchenko & Radashevsky 1993, 2002, Mustaquim 1988, Radashevsky & Pankova 2006. A molecular biological approach has been suggested in order to distinguish the species with closely similar morphology, but there have been few such studies in the Spionidae, particularly in polydorids (Bastrop et al 1998, Rice et al 2008.…”

Section: Introductionmentioning

confidence: 99%

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Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Teramoto¹,

Sato-Okoshi²,

Abe³

et al. 2013

Aquat. Biol.

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A new species of spionid polychaete, Polydora onagawaensis, is described from mollusk shells in Pacific waters of northeastern Japan. Its nuclear 18S rRNA gene sequence as well as its morphology, reproductive features, life history and infestation characteristics are reported. Polydora onagawaensis sp. nov. belongs to the Polydora ciliata/websteri group and has a moderate size and variable black pigmentation on the palps and body. Up to 115 worms were found boring in a single scallop shell from suspended cultures in Onagawa Bay, with significantly higher numbers in the right than in the left valve. Females repeatedly deposited a string of egg capsules from around October to June (seawater temperature was below 15°C). The larvae developed inside the egg capsules for 2 wk (10°C, laboratory conditions), until the 3-chaetiger stage, before being released as planktonic larvae. The main spawning occurred in December, recruitment onto the shells increased after January, and most large worms disappeared between July and October. Thus, the estimated life span is around 1.5 yr after settlement. Details on biology and gene information not only contribute to distinguishing the species from other polydorids similar in morphology, but also allow control of polydorid infestation in mollusk aquaculture.

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Section: Taxonomymentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Teramoto¹,

Sato-Okoshi²,

Abe³

et al. 2013

Aquat. Biol.

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“…Similarly, many polydorid species (in cluding non-indigenous and pest species) have been recorded in South Africa (14; e.g. Boonzaaier et al 2014, Williams 2015, Australia (9; Blake & Kudenov 1978, Skeel 1979, Sato-Okoshi et al 2008, Walker 2014Handley & Bergquist 1997, Read & Handley 2004, Read 2010), Chile (6; Sato-Okoshi & Takatsuka 2001, Moreno et al 2006) and Brazil (5; Radashevsky et al 2006). In contrast, only 4 polydorid species have been re corded in China, on 5 hosts (Zhou et al 2010).…”

Section: Discussionmentioning

confidence: 99%

“…To further complicate matters, preliminary molecular investigations also suggest that P. ona ga wa ensis may be synonymous with P. websteri (Williams 2015). Additionally, studies by Read (2010), Walker (2014) and Williams (2015) provide compelling arguments for synonymising shell-boring P. haswelli with P. neocaeca and P. uncinata with P. hop lura. If they are right, the known distribution of these species will change considerably, and P. hoplura will be the most widespread pest in the world.…”

Section: Problems With Taxonomymentioning

confidence: 99%

Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success

Simon¹,

Sato-Okoshi²

2015

Aquacult. Environ. Interact.

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Species of the Polydora-complex (i.e. polydorids) are the most common shell-boring polychaetes found on cultured molluscs. However, which species become problematic depend on their ability to reach mollusc farms and flourish under culture conditions. We therefore hypothesise that the planktonic larval phases of pest polydorids on molluscs grown on-shore will be short (as is typical of adelphophagic larvae, which can maintain large local populations) while those of polydorids on molluscs grown off-shore will be long (as is typical of planktotrophic larvae, which can disperse long distances to farms). Principal component and discriminant analyses of information extracted from the literature partly supported this hypothesis by identifying larval developmental mode and pest species as contributing more to pest status than host species and culture mode, with differential influence on pest status in different situations and potential bias through incorrect identification of polydorid species. χ 2 analyses confirmed that pest status depended on host culture method and pest larval mode. Pest polydorids producing adelphophagic larvae in on-shore systems may reflect the development of large local populations on hosts with culture periods > 2 yr. The many records of pests in off-shore and near-shore systems with pest species producing planktotrophic larvae may reflect shorter host culture periods and the higher incidence of planktotrophy among polydorid species in general. Polydora websteri, P. uncinata, P. hoplura and P. haswelli are the most frequently recorded and widespread pest species globally, although the taxonomy of these and shell-boring P. ciliata and Boccardia polybranchia need to be clarified. The positive relationships between the numbers of alien shell-borers and pests, and the number of hosts cultured per country confirm that mollusc aquaculture is an important vector and reservoir of alien pest polychaetes.

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“…Species from the genus Polydora make holes in a substrate containing calcium carbonates as rock or coralline algae, like oysters, mussels, and gastropods (Boscolo & Giovanardi, 2002). In the perforation process, the worm dissolves the shell using secretions together with the action of falcate notochaetae spines (modified chaetae) from chaetiger fifth to form a shaped-U hollow that has a central island filled by thin detritus, which can have almost 20 mm of length (Zottoli & Carriker, 1974).The presence of drilling organisms in mollusks shells cause damage to these hosts, weakening the limestone skeleton, increasing the energy expenditure for shell maintenance and may be vectors of diseases, factors that reduce its commercial value, and condition reduced index (Wargo & Ford, 1993;Handley & Bergquist, 1997;Boscolo & Giovanardi, 2002;Read, 2010). The infestation degree of polydorids varies between oyster species and suffers a direct influence of environmental parameters, mainly the temperature (Nel et al, 1996;Handley & Bergquist, 1997).…”

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confidence: 99%

Infestation of Crassostrea cf. brasiliana by boring-polychaete polydorids in estuaries from Northeastern Brazil

Souza

Bonifácio²,

Assis³

2017

J. Env. Anal. Progr.

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A B S T R A C TThe presence of polydorids shell-borer and the epifaunal polychaetes on Crassostrea cf. brasiliana were studied in five estuaries in Northeastern Brazil. The prevalence of shell-boring polychaetes in oysters varied significantly, showing the dominance of Polydora websteri, with 57% of sampled oysters, and Boccardiella ligerica, with 11%, but the prevalence was significantly different among estuaries sampled. Capibaribe River showed the highest infestation, with 81% these mudblisters, but in Massangana River had no presence of these polychaetes. The linear regression between the number of polychaetes and the size of oysters was significant, suggesting that infestation increases with age. Keywords: Polychaeta, benthos interspecific association, bivalvia. IntroductionThe family Spionidae has more than 500 nominal species, and 35 genera (Radashevsky, 2012), that live in a variety of marine environments from sandy beaches to limestone substrate (Williams, 2000). Among this family, only the polydorid species present a modification of chaetiger and have the ability to bore into calcareous substrata that seem to be widespread among the species of the genera Polydora and Dipolydora (Sato-Okoshi, 2000). However, some species of the following spionid genera infest calcareous substrates as mollusk shells: Amphipolydora, Boccardia, Boccardiella, Carazziella, Dipolydora, Polydora, Pseudopolydora and Tripolydora (Bower et al., 1994;Blake, 1996). Species from the genus Polydora make holes in a substrate containing calcium carbonates as rock or coralline algae, like oysters, mussels, and gastropods (Boscolo & Giovanardi, 2002). In the perforation process, the worm dissolves the shell using secretions together with the action of falcate notochaetae spines (modified chaetae) from chaetiger fifth to form a shaped-U hollow that has a central island filled by thin detritus, which can have almost 20 mm of length (Zottoli & Carriker, 1974).The presence of drilling organisms in mollusks shells cause damage to these hosts, weakening the limestone skeleton, increasing the energy expenditure for shell maintenance and may be vectors of diseases, factors that reduce its commercial value, and condition reduced index (Wargo & Ford, 1993;Handley & Bergquist, 1997;Boscolo & Giovanardi, 2002;Read, 2010). The infestation degree of polydorids varies between oyster species and suffers a direct influence of environmental parameters, mainly the temperature (Nel et al., 1996;Handley & Bergquist, 1997). Large infestations can leave the host vulnerable and hence more susceptible to predators such as crabs. Often the infestations are not visible in the new polydiariosis (Boscolo & Giovanardi, 2002;Sabry & Magalhães, 2005).The relationships between oysters and infesting polychaetes remain unknown for several localities (Blake & Kudenov, 1978; Radashevski, 2013). Radashevski et al. (2006) (Amaral & Simone, 2014). This study aims to determine the diversity of polydorids polychaetes within C. cf. brasiliana and their infestation and p...

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Comparison and history ofPolydora websteriandP. haswelli(Polychaeta: Spionidae) as mud-blister worms in New Zealand shellfish

Cited by 48 publications

References 34 publications

Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success

Infestation of Crassostrea cf. brasiliana by boring-polychaete polydorids in estuaries from Northeastern Brazil

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