Nassarius deshayesianus

Lore & Background

This species was described by Sowerby in 1894 in a work on new shells from the Persian Gulf and Bay of Zaila. It belongs to the family Nassariidae, a group of marine gastropods known as nassa mud snails or dog whelks. The species is found in warm sampling areas, and its distribution includes the Red Sea and the Strait of Hormuz. Salinity is a limiting factor for its distribution, as increased salinity up to 41 psu can cause a decline in metabolic rate, and changes in hemolymph osmolarity and tissue water content can lead to death in most aquatic organisms of this phylum.

Reader's Guide

Nassarius deshayesianus contributes to the understanding of salinity tolerance in marine gastropods, as studies indicate that salinity is a key limiting factor for its distribution and physiological processes. The species' occurrence in the Red Sea and Strait of Hormuz places it within a region of significant environmental variability, where salinity fluctuations can affect metabolic rates and survival. Its description by Sowerby in the late 19th century adds to the historical documentation of molluscan diversity in the Persian Gulf and Red Sea. The species is part of the broader Nassariidae family, which has been systematically studied by Cernohorsky. Research on intertidal gastropod assemblages in the northern Persian Gulf and Gulf of Oman further contextualizes its ecological role. The species serves as an example of how environmental factors like salinity shape the distribution and physiology of marine organisms in warm, shallow waters.

Did You Know?

• The shell of Nassarius deshayesianus grows to a length of 15 mm.
• It is found in the Red Sea and the Strait of Hormuz.
• It belongs to the family Nassariidae, known as nassa mud snails or dog whelks.