Electrophysiological studies in echinoderms are rare. In echinoids investigations have been made by Takahashi and Sandeman. The former used Diadema setosum, the latter Strongylocentrotus, Tripneustes and Toxopneustes. Takahashi gives a brief account of the electrical concomitant of the photic responses already described in detail by Millott and co-workers. Behavioural studies showed that the ra...

In this study, it was aimed to analyses some growth parameters of the invasive Diadema setosum (Leske, 1778) from Iskenderun Bay. For reason, a total 117 samples were collected in September 2021 rocky shores coast Iskenderun. The test diameter D. varied between 24.32 and 81.1 mm with an average 51.8±1.18 length. weight changed 27.14 185.11 g, 84.64±2.77 g. length-weight relationship W = 0.7917*...

OBJECTIVE Sea urchin gonad is considered as a highly prized delicacy in several countries. It is also rich in valuable bioactive compounds including polyunsaturated fatty acids (PUFAs) and β-carotene. This study was undertaken to examine the antimicrobial properties of the ovary extract from sea urchin Diadema setosum against selected Gram-negative and Gram-positive bacteria. MATERIALS AND ME...

The causes of speciation in the sea are rarely obvious, because geographical barriers are not conspicuous and dispersal abilities or marine organisms, particularly those of species with planktonic larvae, are hard to determine. The phylogenetic relations of species in cosmopolitan genera can provide information on the likely mode of their formation. We reconstructed the phylogeny of the pantrop...

In the present study, collagen was obtained from tissues of invasive sea urchin (Diadema setosum) rapidly spreading in Mediterranean. As a result, yield isolated determined to be 23.78±1.33% (dry weight). According SDS-Page (Sodium Dodecyl Sulfate-Polyacrylamide gel electrophoresis) analysis, it contains (α1)2α2, (Molecular Weight (MW) 124, 114 kDa) resembling calfskin and ß chains (MW 245 kDa)...