Biological Invasions of Cold-Water Coastal Ecosystems - Aquatic ...

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Chapt 9C6 Decapod Crustaceans, page 9C6- 1 Chapter 9C6. Focal Taxonomic Collections: Decapod Crustaceans Anson Hines, Smithsonian Environmental Research Center Lise Schickel, University of California, Santa Barbara Nora Foster, University of Alaska Museum Results We collected a total of 21 species of decapods, including 12 species of brachyuran crabs, 3 species of lithodid crabs, 3 species of hermit crabs, and 5 species of caridean shrimp (Table 9C6.1). All of these species were collected by hand or dip net in the intertidal and shallow subtidal zones, or on float fouling communities. None of these species is a new record for the region (Jensen, 1995). We also noted parasitic castrators (rhizocephalan cirripedes, entoniscid isopods) of decapods in the collections during August 1999. Several of the samples of the hermit crab Pagurus hirsutiusculus exhibited infections by rhizocephalan parasites. The crab Lophopanopeus bellus also has a high prevalence of infection by the rhizocephalan “Loxothylacus panopaei” at Tatitlek. (Note: The name given to this rhizocephalan in the literature by Boschma (1955) for the west coast of North America is undoubtedly incorrect and should be renamed, as this is not the same species that is found in xanthid crabs of the eastern and gulf coasts.) The population of the shore crab Hemigrapsus oregonensis also had high prevalence of the entoniscid isopod Portunion conformis. References Boschma, H. 1955. The described species of the family Sacculinidae. Zool. Verhandel. 27: 48- 76. Jensen, G.C. 1995. Pacific Coast Crabs and Shrimps. Sea Challengers, Monterey, California. 87 pp.
Chapt 9C6 Decapod Crustaceans, page 9C6- 2 Table 9C6.1. Decapod Crustaceans in Field Surveys Decapod Crustaceans 1997; 1998; 1999 Homer Sew - ard Whittier Port Saw- Valdez Mill Bay Rocky Pt., Gallen a Bay Busby Is. Tatitlek Cordovcier Gla- Is. Green Island Consta- Tine Harbor Port Chalmers Brachura Cancer magister X X X X X Cancer oregonensis X X X X X X X X X Cancer productus X X Cancer gracilis X Chionoecetes bairdi X (molts) Chorilla longipes X Hemigrapsus oregonensis X X X X X X,9 X,4 X,7 X X Lophopanopeus bellus X X X,5 X X Oregonia gracilis X X X X Pugettia gracilis X X X Scyra acutifrons X Telmessus cheiragonus X X X X X X X X X Anomura Cryptolithodes typicus X Hapalogaster grebnitzii X X X X Phyllolithodes papillosus X Pagurus beringanus X X Pagurus granosimanus X X X X Pagurus hirsutiusculus X,1 X,2 X X,3 X X X X,6 X,8 X X X X Caridea Eualus b9iunguis X Hyppolyte clarki X X Heptacarpus stimpsoni X X X Spirontocaris ochotensis X X X X Spirontocaris prionota X X Parasite Notes: Aug 1999: 1 = 7/9 with bopyrid isopod 2 = 1/32 with rhizocephalan Peltogaster paguri; 1/32 with rhizocephalan Peltogasterella gracilis 3 = 0/9 infected 4 = 30/45 with entoniscid isopod Portunion conformis 5 = 19/44 with rhizocephalan Loxothylacus panopei 6 = 1/6 with bopyrid isopod; 2/6 with rhizocephalan Peltogaster paguri; 1/6 with isopod and P. paguri 7 = 0/13 with Portunion conformis 8 = 3/30 with Peltogaster paguri; 1/30 with Peltogasterella gracilis June 1998: 9 = 2/93 with rhizocephalan
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page i BIOLOGICAL INVASIONS OF COLD
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page iii • Stephan Benda, Valdez
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page v • From an industry and man
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page xi microscopes for the study.
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page xiii 9C9. Echinoderms 9C9-1 9C
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