The Early Larval Stages of Glyphocrangon Spinicauda A. Milne Edwards
Abstract:The initial zoeal stage of Glyphocrangon spinicauda was hatched from eggs removed from ovigerous females at sea and kept under refrigeration at 7° - 10° C in the laboratory. Two distinct first zoeal forms were obtained from females determined to be conspecific, indicating the presence of two morphologically similar species in the material studied. Both of these zoeal forms are large and very well developed, differing chiefly in size, color of yolk, and the presence of orange chromatophores in one. The second stage of one of these forms was obtained, but found to differ little from the first zoea. The first zoea of one form is described and illustrated; the second zoea of this form and the first stage of the second form are then compared with it.
Document Type: Research Article
Publication date: December 1, 1965
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