Davide Seveso

Learn 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)
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)
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 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)
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)
The corallivorous crown-of-thorns starfish Acanthaster planci (COTS) is recognized as a major cause of coral reef degradation throughout much of the Indo-Pacific region (Fabricius 2013). In this study, we report a localised outbreak of COTS at Mama Ghiri, Ari Atoll, Republic of Maldives in June 2014 (3°44′40″ N; 72°49′13″ E) (Fig. 1a-c). Belt transects(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)
Coral diseases have been little investigated in the Indian Ocean and especially in the Republic of Maldives, where they were firstly observed in 2010. Through repeated monitoring, we observed a peculiar slow progression of Black Band Disease in several large colonies of the reef-building coral Goniopora cf. columna in the Maldivian reefs of Magoodhoo Island(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)
Herein, we provide observation on the ecological relationships between the hydrozoan species Pteroclava krempfi and three alcyonacean genera: Lobophytum, Sarcophyton and Sinularia from protected and exposed reef habitats in the Maldives. The associations were found to be widespread in the investigated area with both an overall and taxon-specific symbiosis(More)