Temperature dependence of growth in stenothermal and eurythermal pectinids

• Main Authors: Storch, Daniela, Pörtner, Hans-Otto
• Format: Conference Object
• Language: unknown
• Published: 2001
• Subjects: Antarctic; The Antarctic; Antarc*; Antarctic Krill; antarcticus
• Online Access: https://epic.awi.de/id/eprint/10194/; https://hdl.handle.net/10013/epic.20684

Mandibles and stomachs of three Antarctic shrimp species (Nematocarcinus lanceopes, Notocrangon antarcticus, and Chorismus antarcticus ) were investigated by means of scanning electron microscopy. Transmission electron microscopy of the midgut glands was applied to find out the nutritional status of the animals which contained a broad variety of food items in their stomachs. In contrast to the Antarctic krill, the three carideans possess a dual filter system; primary filters in the cardia and secondary filters in the pyloric chamber. Morphologically, the mandibles and stomachs of the three species vary considerably, however, their food items are similar. We conclude that stomach contents do not markedly reflect the different modes of life or habitat preferences of the investigated species.