SEX-LINKED DIFFERENCES IN PHENOL OXIDASE IN THE FAIRY SHRIMP STREPTOCEPHALUS-DICHOTOMUS BAIRD AND THEIR POSSIBLE ROLE (CRUSTACEA, ANOSTRACA)

Authors
RADHIKA M NAZAR AKA MUNUSWAMY N NELLAIAPPAN K
Citation
M. Radhika et al., SEX-LINKED DIFFERENCES IN PHENOL OXIDASE IN THE FAIRY SHRIMP STREPTOCEPHALUS-DICHOTOMUS BAIRD AND THEIR POSSIBLE ROLE (CRUSTACEA, ANOSTRACA), Hydrobiologia, 377, 1998, pp. 161-164
Citations number
30
Categorie Soggetti
Marine & Freshwater Biology
Journal title
Hydrobiologia → ACNP
ISSN journal
00188158
Volume
377
Year of publication
1998
Pages
161 - 164
Database
ISI
SICI code
0018-8158(1998)377:<161:SDIPOI>2.0.ZU;2-4
Abstract
phenol oxidase activity in the hemolymph of male Streptocephalus dicho tomus is only 1/3rd of that of females. About 70% of this activity res ides in cell lysate and 30% in plasma. Electrophoretic analysis reveal ed that male plasma has a single fraction of tyrosine hydroxylase, evi denced by positivity towards tyrosine methylester-PMS-NBT. Female hemo lymph has as many as three isozymes showing diphenoloxidase activity. The significance of these results is discussed with reference to sex-l inked enzyme activity and its possible role in longevity.