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Summer disease in Parazoanthus axinellae (Schmidt, 1862) (Cnidaria, Zoanthidea)
Cerrano, C.; Totti, C.; Sponga, F.; Bavestrello, G. (2006). Summer disease in Parazoanthus axinellae (Schmidt, 1862) (Cnidaria, Zoanthidea). Ital. J. Zoolog. 73(4): 355-361. https://dx.doi.org/10.1080/11250000600911675
In: Italian Journal of Zoology. Taylor & Francis/Mucchi Editore: Modena. ISSN 1125-0003; e-ISSN 1748-5851, more
Peer reviewed article  

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Keywords
    Cyanobacteria [WoRMS]; Fungi [WoRMS]; Parazoanthus axinellae (Schmidt, 1862) [WoRMS]
    Marine/Coastal
Author keywords
    Mass mortality, marine fungi, benthic cyanobacteria, global warming, Mediterranean Sea

Authors  Top | Dataset 
  • Cerrano, C.
  • Totti, C.
  • Sponga, F.
  • Bavestrello, G.

Abstract
    Climate change is affecting marine environments all over the world but scientists' attention is mainly devoted to tropical areas. In the Mediterranean Sea, species with a cold affinity are decreasing very fast from 0 to 40 m depth, while warm water species increase. From 2000, several populations of the zoanthid Parazoanthus axinellae (Schmidt 1882) have been showing signs of suffering along the Ligurian coast. Here we report a three‐year monitoring, from June 2001 to September 2003, of a population of P. axinellae on the rocky cliff of the Portofino Promontory (Ligurian Sea). During this span of time the population, which covered an area of several square metres with a density of about 1 polyp cm−2, was severely reduced. In the meanwhile an encrusting sponge, Crambe crambe, rapidly colonized the free substrates abandoned by the zoanthid. Warm water and the massive proliferation of a cyanobacterium attributed to the genus Porphyrosiphon are hypothesized to be the main causes of this disease.

Dataset
  • CorMedNet- Distribution and demographic data of habitat-forming invertebrate species from Mediterranean coralligenous assemblages between 1882 and 2019., more

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