Phorcus Richardi U B B L I C

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Allegato alla pubblicazione “Catalogo Annota to e Atlante iconografico dei molluschi marini del Mediterraneo” Tutti i diritti riservati © 2007 per i rispettivi proprietari. Vietata la duplicazione e riproduzione senza espressa autorizzazione scritta. INFO su: [email protected] ad Opercolo Gibbula . Vers.1.0 aranciate. - scura della base che si - 2004 Stampato presso arti - Pallary, 1912 - | -- enta quindi nessuna ornamentazione 2007 ml Phorcus richardi (Payraudeau, 1826) , con la quale può essere confusa, per sensu Costa O.G., 1829 - | 18 mm. -- - : (nomen nudum) - Pallary, 1912 Bucquoy, Dautzenberg & Dollfus, 1884 Bucquoy, Dautzenberg & Dollfus, 1884 Bucquoy, Dautzenberg & Dollfus, 1884 ima Risso, 1826 aggiornata al 24/06/ Plawen & Haszprunar, 1987 - Linné, 1758 Risso, 1813 Anton, 1839 Phorcus mutabilis 1797 La colorazione tipica è ulivacea, con bande giallo Malacofauna pliocenica toscana vol.4 . Base poco convessa con ombelico ampio e profondo, contornato da - e del fondo. Risso, 1826 (Payraudeau, 1826) [Monodonta] hus radiatus rlo Chirli G. D’Angelo, S. Gargiulo, Guida alle conchiglie mediterranee 1978, p. 89 grafiche BMB Firenze pag 113- + 41 tavole http://www.gastropods.com/2/Shell_5842.ht Si differenzial’ombelico da più grandecontinua e anche nella la parte interna colorazione del labbro. sempre verde Scheda di Maria Amato piccole maculecolorazion brune,Il alternate diametro medio si da aggiraÈ sui molto 16 altrettante comune in tuttorocce macchie il e Mediterraneo. posidonie. Vive più nelle zone litorale chiare e sommersa, tra della Ca ! Trochus cinerarius = Troc = Trochus richardi var. major = Trochus richardi var. pallida = Trochus richardi var. zigzag = Gibbula richardi var. min È una conchiglianella globosa, parte formata superiore, daavere separati 5 una da superficie giri liscia suture pocoa e lineari parte lucida, convessi, non evidenti. le un pres strie Èalla poco periferia di l’unica appiattiti accrescimento. Ultimouna giro zona grande, regolarmentespiralato bianca. corneo. arrotondato AperturaAlcuni esemplari grande presentano due con bande (quattro sull’ultimo labbro giro) assai esterno strette con tagliente = Turbo variegatus = Phorcus margaritaceus Vetigastropoda Salvini Trochidae Rafinesque, 1815 Phorcus richardi Gastropoda Cuvier, e habitat Note Redattore Riferimenti on line Comparazione Riferimenti bibliografici Descrizione originale Dimensioni Area di distribuzione Descrizione Scheda descrittiva: Sinonimi Genus Subgenus specie subspecie Superfamilia Familia Subfamilia Scheda tassonomica: Classis Ordo Allegato alla pubblicazione “Catalogo Annota to e Atlante iconografico dei molluschi marini del Mediterraneo” Tutti i diritti riservati © 2007 per i rispettivi proprietari. Vietata la duplicazione e riproduzione senza espressa autorizzazione scritta. INFO su: [email protected] Vers.1.0 Foto 3 di Sergio Lazzarotto anelli Foto 2 di Claudio F : Pierluigi Angioi di Foto 4 di Sergio Lazzarotto Foto 1 Riferimenti fotografici.

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Marine Snails of the Genus Phorcus: Biology and Ecology of Sentinel Species for Human Impacts on the Rocky Shores
DOI: 10.5772/intechopen.71614 Provisional chapter Chapter 7 Marine Snails of the Genus Phorcus: Biology and MarineEcology Snails of Sentinel of the Species Genus Phorcusfor Human: Biology Impacts and on the EcologyRocky Shores of Sentinel Species for Human Impacts on the Rocky Shores Ricardo Sousa, João Delgado, José A. González, Mafalda Freitas and Paulo Henriques Ricardo Sousa, João Delgado, José A. González, MafaldaAdditional information Freitas and is available Paulo at Henriques the end of the chapter Additional information is available at the end of the chapter http://dx.doi.org/10.5772/intechopen.71614 Abstract In this review article, the authors explore a broad spectrum of subjects associated to marine snails of the genus Phorcus Risso, 1826, namely, distribution, habitat, behaviour and life history traits, and the consequences of anthropological impacts, such as fisheries, pollution, and climate changes, on these species. This work focuses on discussing the ecological importance of these sentinel species and their interactions in the rocky shores as well as the anthropogenic impacts to which they are subjected. One of the main anthro- pogenic stresses that affect Phorcus species is fisheries. Topshell harvesting is recognized as occurring since prehistoric times and has evolved through time from a subsistence to commercial exploitation level. However, there is a gap of information concerning these species that hinders stock assessment and management required for sustainable exploi- tation. Additionally, these keystone species are useful tools in assessing coastal habitat quality, due to their eco-biological features. Contamination of these species with heavy metals carries serious risk for animal and human health due to their potential of biomag- nification in the food chain.
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