Davide Seveso

Learn More
To date, few hydroids have been observed to be associated with anthozoans, and only three Pacific Zanclea species are known to live in symbiosis with scleractinian corals, namely Zanclea gilii, Z. margaritae, and Z. sango (Boero et al. 2000; Pantos and Bythell 2010; Hirose and Hirose 2011). Here, we report the first evidence of this kind of association in(More)
Although corals are known to host a variety of marine organisms, to date few benthic hydrozoans have been observed to be associated with anthozoans. However, three species belonging to the genus Zanclea have recently been discovered that inhabit reef-building scleractinians. Here we report the first evidence of such Zanclea-coral associations from the Red(More)
Little research has been conducted on diseases affecting reef-building corals in the central Indian Ocean. During 2010 and 2011, we performed a quantitative assessment of black band disease (BBD) in the central Republic of Maldives. Distribution, host range, and prevalence of BBD were investigated at 6 coral islands (Magoodhoo, Adanga, Ihuru, Vabbinfaru,(More)
Indo-Pacific coral diseases are currently considered one of the 15 globally important threats requiring conservation attention. The coral reefs of the Maldives are experiencing a local decline, with the presence of some coral diseases reported only recently. We investigated the spatial variability in prevalence and distribution of two protozoan diseases,(More)
Caulerpa racemosa, a common and opportunistic species widely distributed in tropical and warm-temperate regions, is known to form monospecific stands outside its native range (Verlaque et al. 2003). In October 2011, we observed an alteration in benthic community due to a widespread overgrowth of C. racemosa around the inhabited island of Magoodhoo (3 04¢N;(More)
Due to the increasing frequency and severity of the coral bleaching events in the context of global warming, there is an urgent need to improve our understanding of the susceptibility of corals to thermal stresses, particularly at the sub-cellular level. In this context, we examined the modulation of the polyp mitochondrial Hsp60 in three scleractinian(More)
Scleractinian reef corals have recently been acknowledged as the most numerous host group found in association with hydroids belonging to the Zanclea genus. However, knowledge of the molecular phylogenetic relationships among Zanclea species associated with scleractinians is just beginning. This study, using the nuclear 28S rDNA region and the fast-evolving(More)
Some hydroids are known to form strict relationships with anthozoans. In this study we report the first evidence of the association between Pteroclava krempfi (Hydrozoa: Capitata: Cladocorynidae) and octocorals of the alcyonacean genera Sarcophyton, Lobophytum and Sinularia observed in the Republic of Maldives and in the Red Sea. Our observations contribute(More)
With this study we estimated the changes in colour, bleaching and mortality of coral colonies from February to December 2007, using the colour reference card method. The study was developed in the Watamu Marine Park lagoon (Kenya), bridging the local summer when seawater temperatures were highest and coral bleaching risk was at its maximum. Seven coral(More)
Although fish range sizes are expected to be associated with species dispersal ability, several studies failed to find a clear relationship between range size and duration of larval stage as a measure of dispersal potential. We investigated how six characteristics of the adult phase of fishes (maximum body length, growth rate, age at first maturity, life(More)