+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Correlation among corpus allatum volume, cell size, and juvenile hormone biosynthesis in ovariectomized adult Blattella germanica

Correlation among corpus allatum volume, cell size, and juvenile hormone biosynthesis in ovariectomized adult Blattella germanica

Archives of insect biochemistry and physiology8(1): 37-44

The corpora allata (CA) of both intact and ovariectomized Blattella germanica adult females exhibited a high degree of bilateral symmetry in the rate of juvenile hormone (JH) biosynthesis, the mean size of CA cells, and gland volume (81.3%, 98.3%, and 100% respectively with less than a twofold difference between the two glands in CA pairs). This permitted us to split each CA pair randomly, measure JH biosynthesis in one gland, and dissociate the other gland into a cell suspension in which the size of CA cells was measured. In ovariectomized females, changes in CA volume and the spontaneous and farnesoic acid (FA)-stimulated rates of JH biosynthesis, measured from the same glands, were well correlated (r = 0.78, for both correlations). Similarly, the mean volume of CA cells in one gland increased in relation to increases in both the spontaneous and FA-stimulated rates of JH biosynthesis by the contralateral member of the pair (r = 0.83 and r = 0.91, respectively). Concurrent changes in CA cell size and activity suggest that in the CA of B. germanica cellular growth and degradation are involved in the regulation of JH biosynthesis.

(PDF emailed within 0-6 h: $19.90)

Accession: 002060780

Download citation: RISBibTeXText

DOI: 10.1002/arch.940180104

Related references

Cyclic juvenile hormone biosynthesis in the cockroach, Blattella germanica: effects of ovariectomy and corpus allatum denervation. General and Comparative Endocrinology 82(2): 163-171, 1991

Correlation between haemolymph juvenile hormone titre, corpus allatum volume, and corpus allatum in vivo and in vitro activity during oocyte maturation in a cockroach (Nauphoeta cinerea). General and Comparative Endocrinology, 363: 339-345, 1978

Allatostatins and allatotropin in the corpus cardiacum/corpus allatum complex of larval and adult lepidopterans studied by confocal laser scanning microscopy: correlation to juvenile hormone biosynthesis. Cell and Tissue Research 314(2): 281-295, 2003

Changes in number and size of corpus allatum cells of Blattella germanica during oocyte maturation. Unknown, 1990

Ovarian regulation of cyclic changes in size and activity of corpus allatum cells in Blattella germanica. Journal of insect physiology7(12): 907-917, 1991

Juvenile hormone biosynthesis and oocyte development in adult female Blattella germanica: effects of grouping and mating. Archives of Insect Biochemistry and Physiology, 113: 189-200, 1989

In vivo and in vitro effects of compactin in liposome carriers on juvenile hormone biosynthesis in adult females of Blattella germanica. Pesticide Biochemistry and Physiology, 321: 1-10, 1988

Juvenile hormone inhibition in corpora allata from ovariectomized Blattella germanica. Physiological Entomology 19(4): 342-348, 1994

Juvenile hormone biosynthesis by corpus cardiacum-corpus allatum complexes of larval Lymantria dispar. Comparative Biochemistry and Physiology A: 921: 9-14, 1989

Juvenile hormone regulation of the left colleterial gland in intact and ovariectomized Blattella germanica (L.) (Dictyoptera: Blattellidae). Journal of Insect Physiology 37(6): 401-405, 1991

Effect of juvenile hormone and moulting hormone on biosynthesis of aggregation pheromone of the German cockroach, Blattella germanica (L.). 2008

In vitro inhibition of juvenile hormone III biosynthesis by precocene II and 3,4-dihydroprecocene II on Blattella germanica. Journal of Insect Physiology, 346: 457-461, 1988

Stimulating action of methyl 12,12,12-trifluorofarnesoate on in vitro juvenile hormone III biosynthesis in Blattella germanica. Archives of Insect Biochemistry and Physiology, 114: 257-270, 1989

Stimulating action of methyl 12, 12, 12-trifluorofarnesoate on in vitro juvenile hormone III biosynthesis in blattella germanica. Archives of Insect Biochemistry and Physiology 11(4): 257-270, 1989

Differential stimulation of juvenile hormone III biosynthesis induced by mevalonate and mevalonolactone in Blattella germanica (L.). Journal of Insect Physiology 38(8): 555-560, 1992