| Title | Chemical and structural defensive external strategies in six sabellid worms (Annelida) |
| Abstract | In the marine environment, sessile invertebrates have developed an impressive array of mechanisms to avoid predation, bacterial exploitation, and epibiotic overgrowth. In the present study we investigated several defensive strategies adopted by six sabellids: the hard bottom species Sabella spallanzanii (Gmelin, 1791), Branchiomma luctuosum Grube, 1869, Branchiomma bairdi (McIntosh, 1885), and Sabellastarte spectabilis (Grube, 1878), and the soft bottom species Myxicola infundibulum (Renier, 1804), and Megalomma lanigera (Grube, 1846), which have different morphological characteristics and geographical distribution. We examined and compared some defensive features such as branchial crown toughness, tube structure and strength, amount of released mucus, and antibacterial lysozyme-activity in the mucus. The investigated species utilize a combination of defence and deterrence strategies that seems to be related to the colonized habitat. Tube strength was, higher in the hard bottom species compared with the soft bottom ones, where the tubes are generally buried and protected within the sediment. Branchial crown appeared stronger and resistant in hard bottom species, except for S. spallanzanii, which is the species showing the strongest tube. Sabella spallanzanii, M. infundibulum and S. spectabilis secreted high amount of mucus with high lysozyme-like activity. By contrast, B. luctuosum, B. bairdi, and M. lanigera produced low amounts of mucus exerting lower antibacterial activity. © 2013 Blackwell Verlag GmbH. |
| Source | Marine ecology (Berl.) 35 (1), pp. 36–45 |
| Keywords | Defensive strategiesLysozyme-like activitySabellidaeStructural deterrents |
| Journal | Marine ecology (Berl.) |
| Editor | Blackwell, Berlin, Germania |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1111/maec.12053 |
| Authors | Giangrande, Adriana; Licciano, Margherita; Schirosi, Roberto; Musco, Luigi; Stabili, Loredana |
| Text | 313761 2014 10.1111/maec.12053 Scopus 2 s2.0 84892846041 Defensive strategies Lysozyme like activity Sabellidae Structural deterrents Chemical and structural defensive external strategies in six sabellid worms Annelida Giangrande, Adriana; Licciano, Margherita; Schirosi, Roberto; Musco, Luigi; Stabili, Loredana Universita del Salento; Istituto per l Ambiente Marino Costiero del Consiglio Nazionale delle Ricerche IAMC CNR In the marine environment, sessile invertebrates have developed an impressive array of mechanisms to avoid predation, bacterial exploitation, and epibiotic overgrowth. In the present study we investigated several defensive strategies adopted by six sabellids the hard bottom species Sabella spallanzanii Gmelin, 1791 , Branchiomma luctuosum Grube, 1869, Branchiomma bairdi McIntosh, 1885 , and Sabellastarte spectabilis Grube, 1878 , and the soft bottom species Myxicola infundibulum Renier, 1804 , and Megalomma lanigera Grube, 1846 , which have different morphological characteristics and geographical distribution. We examined and compared some defensive features such as branchial crown toughness, tube structure and strength, amount of released mucus, and antibacterial lysozyme activity in the mucus. The investigated species utilize a combination of defence and deterrence strategies that seems to be related to the colonized habitat. Tube strength was, higher in the hard bottom species compared with the soft bottom ones, where the tubes are generally buried and protected within the sediment. Branchial crown appeared stronger and resistant in hard bottom species, except for S. spallanzanii, which is the species showing the strongest tube. Sabella spallanzanii, M. infundibulum and S. spectabilis secreted high amount of mucus with high lysozyme like activity. By contrast, B. luctuosum, B. bairdi, and M. lanigera produced low amounts of mucus exerting lower antibacterial activity. © 2013 Blackwell Verlag GmbH. 35 http //www.scopus.com/record/display.url eid=2 s2.0 84892846041 origin=inward Chemical and structural defensive external strategies in six sabellid worms Annelida Giangrande_et_al_2013_online_version.pdf Articolo in rivista Blackwell 0173 9565 Marine ecology Berl. Marine ecology Berl. Mar. ecol. Berl. Marine ecology. Berl. Pubblicazioni della Stazione Zoologica di Napoli. I, Marine ecology Berl. Marine ecology Berlin. Print Berl. loredana.stabili STABILI LOREDANA luigi.musco MUSCO LUIGI |
