Abstract

GONZALEZ-ORTIZ, Laura  and  HERNANDEZ-ALCANTARA, Pablo. Infestation of Nodipecten subnodosus (Mollusca: Bivalvia) by the boring sponge Cliona californiana in Ojo de Liebre Lagoon, northwestern Mexico. Rev. Mex. Biodiv. [online]. 2021, vol.92, e923460.  Epub Nov 29, 2021. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2021.92.3460.

The percentage of lion’s paw scallops (Nodipecten subnodosus) infested by the sponge Cliona californiana and its relationship with the scallop length and the sampling season were evaluated. From January 2013 to October 2015, 11 samplings were carried out, collecting 1,082 specimens in 4 scallop banks in Ojo de Liebre Lagoon, Mexican Pacific. In Chocolatero (8 ± 1.6 cm; n= 238) and Zacatoso (9.4 ± 1.6 cm; n= 283) the scallops were smaller, while in La Concha (10.2 ± 1.2 cm; n= 294) and El Dátil (11.7 ± 1.1; n= 267) they were larger. Between 45.7% and 60.1% of scallops were infested, but no correlation was found with their size. In Chocolatero, 80-100% of scallops with 7-8 cm length had sponges, but in the other banks, the highest colonization (70-90%) was recorded in scallops 9-12 cm long. The highest infestation in Zacatoso (May-2014: 80.7%), La Concha (July-2015: 83.3%) and El Dátil: (July-2015: 90.8%) was recorded in spring-summer; however, in Chocolatero it was in winter (January-2013: 85%; March-2015: 100%). Typically, the presence of sponges does not have a noticeable effect on the size of scallops.

Keywords : Lion’s paw scallop; Bivalves; Porifera; Natural protected area; Baja California Sur; Eastern Pacific.

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