Accession Number : AD0253978

Title :   STUDIES ON THE LARVAL DEVELOPMENT OF NEOPANOPE TEXANA SAYI (SMITH) AND OTHER CRABS OF THE FAMILY XANTHIDAE (BRACHYURA)

Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD CHESAPEAKE BAY INST

Personal Author(s) : CHAMBERLAIN, N.A.

Report Date : JAN 1961

Pagination or Media Count : 1

Abstract : Neopanope texana sayi, Hexapanopeus angustifrons, and Piluminus sayi have been reared in isolation from eggs through the first crab stage with about 80% survival. These species hatched in the laboratory as first zoeae and underwent three more zoeal stages and one megalopal stage before metamorphosis to the first crab stage. The duration of the larval stages was twice as long when the zoeae were fed Artemia nauplii plus algae, as when fed Artemia alone. Larvae did not survive when fed algae alone but lived longer than those not fed at all. The mechanism of this inhibition of development by algae is unknown. A morphological description of the larvae of Neopanope texana sayi is given. While no variation in the number of larval stages was found, variations in the zoeae at each stage are described. Some of these variable characters are those frequently used in comparative work on zoeae. (Author)

Descriptors :   *CRUSTACEA, ALGAE, DIET, EGGS, EMBRYOS, FEEDING, GROWTH(PHYSIOLOGY), INHIBITION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE