Microscopic anatomy and ultrastructure of the digestive system of three Antarctic shrimps (Crustacea: Decapoda: Caridea)

Springer Science and Business Media LLC - Tập 24 - Trang 604-614 - 2001
Volker Storch1, Bodil A. Bluhm2, Wolf E. Arntz2
1Zoologisches Institut, Universität Heidelberg, Im Neuenheimer Feld 230, 69120 Heidelberg, Germany,
2Alfred-Wegener-Institut für Polar- und Meeresforschung, Columbusstrasse, 27515 Bremerhaven, Germany,

Tóm tắt

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 really reflect the different modes of life or habitat preferences of the investigated species.