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

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 larv...

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Autores principales:	CA Simon, W Sato-Okoshi
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2015
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/1aab065f7cd34f70a1ac06b4fe9b695a
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spelling	oai:doaj.org-article:1aab065f7cd34f70a1ac06b4fe9b695a2021-11-16T09:43:01ZPolydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success1869-215X1869-753410.3354/aei00138https://doaj.org/article/1aab065f7cd34f70a1ac06b4fe9b695a2015-09-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v7/n2/p147-166/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Species 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. χ2 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.CA SimonW Sato-OkoshiInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 7, Iss 2, Pp 147-166 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
spellingShingle	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 CA Simon W Sato-Okoshi Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success
description	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. χ2 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.
format	article
author	CA Simon W Sato-Okoshi
author_facet	CA Simon W Sato-Okoshi
author_sort	CA Simon
title	Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success
title_short	Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success
title_full	Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success
title_fullStr	Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success
title_full_unstemmed	Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success
title_sort	polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/1aab065f7cd34f70a1ac06b4fe9b695a
work_keys_str_mv	AT casimon polydoridpolychaetesonfarmedmolluscsdistributionspreadandfactorscontributingtotheirsuccess AT wsatookoshi polydoridpolychaetesonfarmedmolluscsdistributionspreadandfactorscontributingtotheirsuccess
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Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success

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