Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis
The effects of spiperone, a dopaminergic receptor blocker, the terpenoid JHIII, and the steroids 17α-hydroxyprogesterone and 17β-estradiol (10-7 mol/crayfish) were assayed in vivo on females of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis. All these compounds were injecte...
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todo:paper_0022104X_v292_n1_p82_Rodriguez2023-10-03T14:26:25Z Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis Rodríguez, E.M. Medesani, D.A. López Greco, L.S. Fingerman, M. dopamine receptor blocking agent estradiol hydroxyprogesterone juvenile hormone iii sesquiterpene spiperone animal article Astacoidea drug effect female growth, development and aging molting oocyte ovary physiology ultrastructure vitellogenesis 17-Hydroxyprogesterone Animal Astacoidea Dopamine Antagonists Estradiol Female Molting Oocytes Ovary Sesquiterpenes Spiperone Support, Non-U.S. Gov't Vitellogenesis Astacoidea Procambarus clarkii The effects of spiperone, a dopaminergic receptor blocker, the terpenoid JHIII, and the steroids 17α-hydroxyprogesterone and 17β-estradiol (10-7 mol/crayfish) were assayed in vivo on females of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis. All these compounds were injected twice a week for 3 weeks. The rate of molting in response to these compounds was also determined. At the end of the experiment the ovaries were dissected out, in order to determine the gonadosomatic indexes and oocyte diameters. Spiperone, 17α-hydroxyprogesterone, and 17β-estradiol produced a significant increase in the gonadosomatic index, while only the first two compounds were able to significantly increase the oocyte diameter; therefore, the effect of 17β-estradiol the on gonadosomatic index could be merely due to increased water uptake by the ovary. Spiperone could be causing a decrease in secretion of the gonad and/or mandibular inhibiting hormones from the eyestalks, and 17α-hydroxyprogesterone could be having a direct stimulatory effect on vitellogenin production. Concerning molting, of the compound tested, only JHIII had a significant (P < 0.05) stimulatory effect, producing a 100% molting rate versus 66.7% among the controls. © 2002 Wiley-Liss, Inc. Fil:Rodríguez, E.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Medesani, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:López Greco, L.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0022104X_v292_n1_p82_Rodriguez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
dopamine receptor blocking agent estradiol hydroxyprogesterone juvenile hormone iii sesquiterpene spiperone animal article Astacoidea drug effect female growth, development and aging molting oocyte ovary physiology ultrastructure vitellogenesis 17-Hydroxyprogesterone Animal Astacoidea Dopamine Antagonists Estradiol Female Molting Oocytes Ovary Sesquiterpenes Spiperone Support, Non-U.S. Gov't Vitellogenesis Astacoidea Procambarus clarkii |
| spellingShingle |
dopamine receptor blocking agent estradiol hydroxyprogesterone juvenile hormone iii sesquiterpene spiperone animal article Astacoidea drug effect female growth, development and aging molting oocyte ovary physiology ultrastructure vitellogenesis 17-Hydroxyprogesterone Animal Astacoidea Dopamine Antagonists Estradiol Female Molting Oocytes Ovary Sesquiterpenes Spiperone Support, Non-U.S. Gov't Vitellogenesis Astacoidea Procambarus clarkii Rodríguez, E.M. Medesani, D.A. López Greco, L.S. Fingerman, M. Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis |
| topic_facet |
dopamine receptor blocking agent estradiol hydroxyprogesterone juvenile hormone iii sesquiterpene spiperone animal article Astacoidea drug effect female growth, development and aging molting oocyte ovary physiology ultrastructure vitellogenesis 17-Hydroxyprogesterone Animal Astacoidea Dopamine Antagonists Estradiol Female Molting Oocytes Ovary Sesquiterpenes Spiperone Support, Non-U.S. Gov't Vitellogenesis Astacoidea Procambarus clarkii |
| description |
The effects of spiperone, a dopaminergic receptor blocker, the terpenoid JHIII, and the steroids 17α-hydroxyprogesterone and 17β-estradiol (10-7 mol/crayfish) were assayed in vivo on females of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis. All these compounds were injected twice a week for 3 weeks. The rate of molting in response to these compounds was also determined. At the end of the experiment the ovaries were dissected out, in order to determine the gonadosomatic indexes and oocyte diameters. Spiperone, 17α-hydroxyprogesterone, and 17β-estradiol produced a significant increase in the gonadosomatic index, while only the first two compounds were able to significantly increase the oocyte diameter; therefore, the effect of 17β-estradiol the on gonadosomatic index could be merely due to increased water uptake by the ovary. Spiperone could be causing a decrease in secretion of the gonad and/or mandibular inhibiting hormones from the eyestalks, and 17α-hydroxyprogesterone could be having a direct stimulatory effect on vitellogenin production. Concerning molting, of the compound tested, only JHIII had a significant (P < 0.05) stimulatory effect, producing a 100% molting rate versus 66.7% among the controls. © 2002 Wiley-Liss, Inc. |
| format |
JOUR |
| author |
Rodríguez, E.M. Medesani, D.A. López Greco, L.S. Fingerman, M. |
| author_facet |
Rodríguez, E.M. Medesani, D.A. López Greco, L.S. Fingerman, M. |
| author_sort |
Rodríguez, E.M. |
| title |
Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis |
| title_short |
Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis |
| title_full |
Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis |
| title_fullStr |
Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis |
| title_full_unstemmed |
Effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, Procambarus clarkii, during early vitellogenesis |
| title_sort |
effects of some steroids and other compounds on ovarian growth of the red swamp crayfish, procambarus clarkii, during early vitellogenesis |
| url |
http://hdl.handle.net/20.500.12110/paper_0022104X_v292_n1_p82_Rodriguez |
| work_keys_str_mv |
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| _version_ |
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