Population analysis of the pink shrimp Pandalus montagui Leach, 1814 (Crustacea: Pandalidae) in Jade Bay (North Sea) indicates a link to the population at the Helgoland Trench

作者：Sabel Maike^*; Tuerkay Michael; Sonnewald Moritz

来源：Marine Biodiversity, 2017, 47(3): 913-919.

DOI：10.1007/s12526-016-0524-z

• Size
• Sex
• Horizontal migration
• Life cycle
• Protandric hermaphroditism

The shrimp species Pandalus montagui is known for its seasonal, vertical migration due to its reproductive cycle. Previous work indicates that horizontal migration of this species is also evident. At the German Bight (North Sea), we observed possible offspring from its main population at the Helgoland Trench (HTR) inside Jade Bay. Samples were taken at different stations in Jade Bay and in the HTR. Alongside the measurement of the individual carapace lengths, the genders of P. montagui have been determined in order to compare both Jade Bay and HTR specimens according to their size and gender distributions. The results show a limited occurrence of P. montagui, mostly females, in Jade Bay, with a size distribution that broadly matches the size of the individuals from the HTR. These observations imply that, in the summer months especially, Jade Bay appears to be a suitable habitat for individuals of P. montagui not taking part in the reproductive cycle, as the animals of this small population offset are too young. As shown in earlier studies, it can be confirmed that females are generally larger than males at the same age.

• 出版日期2017-9