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ID
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Thumbnail |
Media Data |
| 1251 |
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Scientific Name
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Deto echinata
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Comments
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As the name suggests, the horned isopod is easily recognized by the pairs of "horns" arising on the back of each thoracic segment. It is often confused with the similar looking Ligia, to which it is only distantly related. It is an air breathing isopod found associated with kelp and other drift algae washed up on rocky shores of western South Africa. It feeds mainly on this algae as well as live prey and carrion.
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Reference
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G. M. Branch, C. L. Griffiths, M. L. Branch, and L. E. Beckley. 1994. Two Oceans, a Guide to the Marine Life of Southern Africa. David Philip Publishers, South Africa.
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Specimen Condition
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Live Specimen
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Copyright
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© 1994 G. M. Branch
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Image Use
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restricted
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Attached to Group
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Isopoda: view page image collection
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Title
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isopod3.gif
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Image Type
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Photograph
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Image Content
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Specimen(s)
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ALT Text
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horned isopod
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ID
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1251
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| 1927 |
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| 3583 |
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Scientific Name
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Sphaeromene polytylotos
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Comments
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The button isopod is found amongst mussels and barnacles on rocky shores and reefs along the coast of western South Africa. It is herbivorous, feeding on filamentous algae and on simple green algae.
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Reference
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G. M. Branch, C. L. Griffiths, M. L. Branch, and L. E. Beckley. 1994. Two Oceans, a Guide to the Marine Life of Southern Africa. David Philip Publishers, South Africa.
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Specimen Condition
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Live Specimen
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Copyright
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© 1994 G. M. Branch
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Image Use
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restricted
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Attached to Group
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Isopoda: view page image collection
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Title
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isopod1.gif
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Image Type
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Photograph
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Image Content
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Specimen(s)
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ALT Text
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Button isopod
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ID
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3583
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| 3856 |
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| 5225 |
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Scientific Name
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Cymothoa exigua
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Comments
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The tongue-eating isopod causes degeneration of the tongue of its host fish, the rose snapper, Lutjanus guttatus, and it then attaches to the remaining tongue stub and floor of the fish's mouth by hook-like pereopods. In this position the isopod superficially resembles its host's missing tongue.
Brusca & Gilligan (1983) hypothesize that these isopods serve as a mechanical replacement for the fish's tongue and represent the first known case in animals of functional replacement of a host structure by a parasite. This relationship is so-far known only from the Gulf of California.
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Reference
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Alex Kerstitch. 1989. Sea of Cortez Marine Invertebrates. Sea Challengers, Monteray, California.
Brusca, R. C. and M. R. Gilligan. 1983. Tongue replacement in a fish by a parasitic Isopod. Copeia. 1983(3):813-816.
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Specimen Condition
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Live Specimen
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Copyright
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© 1989 Matthew Gilligan, Savannah State College, Savannah, GA
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Image Use
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restricted
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Attached to Group
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Isopoda: view page image collection
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Title
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isopod2.gif
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Image Type
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Photograph
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Image Content
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Specimen(s)
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Subject
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Morphology, Neurobiology
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ALT Text
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Tongue-eating isopod
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ID
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5225
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| 13271 |
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Document Use
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 This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
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Copyright
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© 1997 Richard Brusca
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Attached to Group
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Isopoda: view page
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Title
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A Guide to the Coastal Isopods of California
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Description
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The California marine isopod fauna numbers 190 named species (eight of which are questionable species, nomen dubia or species inquirenda), representing thirty-six families in eight suborders. Although we have enumerated all species known from California waters, the keys treat only species occurring in the intertidal and supralittoral zones, plus the commonly encountered fish parasites of the family Cymothoidae. However, the coverage of the key includes the entire coastline of California and Oregon. At least fourteen species are thought to have been introduced to California’s coastal zone: one cirolanid, four sphaeromatids, one asellotan, one epicaridean and seven oniscids.
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Document Content
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Research Report
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ToL Learner Level
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Advanced
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Subject
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Biodiversity, Biogeography, Morphology, Taxonomy
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ID
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13271
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| 13272 |
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Document Use
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This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
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Copyright
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© 1997 Richard Brusca
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Attached to Group
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Isopoda: view page
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Title
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A Guide to the Coastal Isopods of California: Plates
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Description
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The California marine isopod fauna numbers 190 named species (eight of which are questionable species, nomen dubia or species inquirenda), representing thirty-six families in eight suborders. Although we have enumerated all species known from California waters, the keys treat only species occurring in the intertidal and supralittoral zones, plus the commonly encountered fish parasites of the family Cymothoidae. However, the coverage of the key includes the entire coastline of California and Oregon. At least fourteen species are thought to have been introduced to California’s coastal zone: one cirolanid, four sphaeromatids, one asellotan, one epicaridean and seven oniscids.
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Document Content
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Research Report
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ToL Learner Level
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Advanced
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Subject
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Biodiversity, Biogeography, Morphology, Taxonomy
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ID
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13272
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| 13283 |
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Comments
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Isopod anatomy in representative groups. 1, Cirolanidae. 2, Asellota. 3, Sphaeromatidae. 4, Idoteidae. 5, Generalized mouthparts. 6, Penes. 7, Pleon of Valvifera (ventral view). 8, Generalized pleopods. (after Van Name, 1936; Menzies and Frankenberg, 1966; Menzies and Glynn, 1968)
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Reference
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Brusca, R. C., V. Coelho and S. Taiti. 2001. A Guide to the Coastal Isopods of California. Internet address: http://tolweb.org/notes/?note_id=3004
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Image Use
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This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
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Copyright
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© 2001 Richard Brusca
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Attached to Group
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Isopoda: view page image collection
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Title
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caplate01.gif
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Image Type
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Drawing/Painting
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Image Content
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Body Parts
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Subject
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Morphology
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ID
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13283
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| 13284 |
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Comments
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Isopoda. Valvifera: 87, Idotea wosnesenskii. 88, Idotea urotoma. 89, Synidotea berolzheimeri, A, maxilliped, B, whole animal. 90, Synidotea consolidata. 91, Synidotea harfordi. 92, Synidotea pettiboneae. 93, Synidotea ritteri. (after Menzies and Miller, 1972; Rafi and Laubitz, 1990)
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Reference
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Brusca, R. C., V. Coelho and S. Taiti. 2001. A Guide to the Coastal Isopods of California. Internet address: http://tolweb.org/notes/?note_id=3004
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Image Use
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This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
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Copyright
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© Richard Brusca
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Attached to Group
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Valvifera (Isopoda): view page image collection
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Title
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caplate17.gif
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Image Type
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Drawing/Painting
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Image Content
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Body Parts
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ID
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13284
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| 13285 |
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Comments
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Isopoda. Asellota: 21, Ianiropsis minuta, A, whole animal, B, maxilliped. 22, Ianiropsis montereyensis, A, whole animal, B, male first pleopods, C, detail of the distal part of the male first pleopods. 23, Ianiropsis tridens. 24, Joeropsis dubia dubia, A, whole animal, B, detail of the lateral margin of the pleotelson. 25, Joeropsis dubia paucispinis, detail of pleotelson. (after Menzies, 1951A, 1952)
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Reference
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Brusca, R. C., V. Coelho and S. Taiti. 2001. A Guide to the Coastal Isopods of California. Internet address: http://tolweb.org/notes/?note_id=3004
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Image Use
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This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
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Copyright
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© Richard Brusca
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Attached to Group
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Asellota (Isopoda): view page image collection
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Title
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caplate04.gif
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Image Type
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Drawing/Painting
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Image Content
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Body Parts
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ID
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13285
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