NDLI: Shipworm (Bankia setacea) host selection habits at the port of Everett, Washington

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Shipworm (Bankia setacea) host selection habits at the port of Everett, Washington

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Book reviews ( Estuaries , Volume 20 , Issue 2 )

Estuaries : Volume 20, Issue 1, March 1997

Shipworm (Bankia setacea) host selection habits at the port of Everett, Washington

Content Provider	Springer Nature Link
Author	Gara, R. I. Greulich, F. E. Ripley, K. L.
Copyright Year	1997
Abstract	Studies were performed at the Port of Everett, Washington, and the associated Snohomish River Estuary, to establish settlement patterns of veliger of the shipworm,Bankia setecea. Estuarine waters at the Port of Tacoma also were sampled for shipworm activity. Veliger settlement patterns at the Port of Everett indicated settlement took place all year, with major activity during August–October. This also was a period of reduced Snohomish River flow; therefore, logs stored in the estuary during 1989 at 1.9–3.0 km up river from the river’s mouth were attacked byB. setacea as the salinity of these log-storage sites increased. In contrast, major movement of veligers at the Port of Tacoma was in early summer; high water temperatures were though to prevent midsummer settlement. The upper side of wooden samplers were significantly more infested by shipworms than the under side. Veliger settlement increased evenly with depth down to the mudline discontinuity. Veligers attacked fresh wooden samplers at a significantly higher rate when these samplers were placed next to wood that had been exposed previously to shipworm attack for over 8 wk. There was proportionally less attack on fresh wooden samplers when these samplers were placed next to material exposed to attack for 4 wk; the least attack on fresh wooden samplers occurred when they were placed adjacent to unnattacked wood that had been exposed to marine water for a month (screening prevented this material from being infested). These results suggested that there were waterborne cues emanating from previously-attacked material that attracted veligers. There were significantly moreB. setacea attacks on wooden samplers that were half-covered with Douglas-fir bark as compared with samplers half-covered with foam plastic. These data confirmed observations that shipworms severely attack Douglas-fir logs at sites where the bark has been peeled off, an indication that settling veliger larvae may respond to host-mediated chemical cues.
Starting Page	441
Ending Page	449
Page Count	9
File Format	PDF
ISSN	01608347
Journal	Estuaries
Volume Number	20
Issue Number	2
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Environment Ecology Geosciences Freshwater & Marine Ecology Environmental Management Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Aquatic Science Environmental Science

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Shipworm (Bankia setacea) host selection habits at the port of Everett, Washington

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