Abstract
The kinorhynch species Echinoderes levanderi Karling, 1954 is redescribed. The species can now be recognized by the presence of spines in middorsal positions on segments 4–8, and in lateroventral positions on segments 6–9, with lateroventral spines on segment 9 showing sexual dimorphism; tubes in subdorsal and ventrolateral positions on segment 2, in sublateral positions on segments 4 and 8, in lateroventral positions on segment 5, and in laterodorsal positions on segment 10. Furthermore, the enlarged sieve plates on segment 9 make the species highly characteristic. New records of the species extend its distributional range into the Bothnian Bay where the bottom water salinity drops below 5 ppt, which is the lowest salinity recorded for a habitat with kinorhynchs.
Highlights
IntroductionThe northern part, limited by Sweden to the west and Finland to the east, is called the Gulf of Bothnia, which is divided into the Bothnian Sea to the south and the Bothnian Bay to the north (Fig. 1)
The Baltic Sea is a northeastern extension of the Atlantic Ocean that passes through the narrow straits between Denmark and Sweden
The Baltic Sea and the Gulf of Bothnia receive enormous quantities of freshwater from the numerous rivers that empty from the surrounding land masses (Voipio 1981). This net inflow of freshwater makes the area brackish, with salinities ranging from 8–20 ppt in the western part of the Baltic Sea, and limnic in the Bothnian Bay, where salinities drop to 3–4 ppt (Axe & Sahlsten 2001)
Summary
The northern part, limited by Sweden to the west and Finland to the east, is called the Gulf of Bothnia, which is divided into the Bothnian Sea to the south and the Bothnian Bay to the north (Fig. 1). The Baltic Sea and the Gulf of Bothnia receive enormous quantities of freshwater from the numerous rivers that empty from the surrounding land masses (Voipio 1981). This net inflow of freshwater makes the area brackish, with salinities ranging from 8–20 ppt in the western part of the Baltic Sea, and limnic in the Bothnian Bay, where salinities drop to 3–4 ppt (Axe & Sahlsten 2001). The Baltic Sea and the Gulf of Bothnia represent the world’s largest brackish water body (Björck 1995)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
