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F 10 pandalid shrimp: Sex determination; DNA and dopamine as indicators of domestication; and outcrossing for wild pigment pattern
Author(s) -
Marliave Jeffrey B.,
Gergits William F.,
Aota Sumi
Publication year - 1993
Publication title -
zoo biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.5
H-Index - 54
eISSN - 1098-2361
pISSN - 0733-3188
DOI - 10.1002/zoo.1430120506
Subject(s) - biology , shrimp , domestication , zoology , fecundity , outcrossing , juvenile , ecology , population , pollen , demography , sociology
Abstract Domestication becomes significant in captive propagation of high‐fecundity animals which sustain significant mortality rates. The domestication process typical of higher vertebrates has been observed in the coonstripe shrimp, Pandalus danae , which were reared through 10 generations for study of protandric hermaphroditism. The research protocol of repeated handling, for determining sex and carapace length, rendered escape responses maladaptive. Domesticated, F 10 shrimp showed significantly greater band‐sharing in genomic DNA than wild shrimp, and the domesticated shrimp had only 5.5% of the dopamine levels in haemolymph found in wild shrimp. For both parameters, outcrossed shrimp (wild X domestic) had intermediate values. The outcrossed shrimp looked entirely wild, yet had behavioral and metabolic attributes of domestic shrimp. For such nonendangered species, domestication may be as desirable as it is unavoidable. It appears necessary, however, to perform outcrossing in order to maintain the wild form. © 1993 Wiley‐Liss, Inc.