http://www.tandfonline.com/doi/pdf/10.1080/01647951003757961
complete paper available
THE SALIVARY GLANDS OF ADULT FEMALE VARROA DESTRUCTOR (ACARI:
VARROIDAE), AN ECTOPARASITE OF THE HONEY BEE, APIS
MELLIFERA (HYMENOPTERA: APIDAE)
Internat. J. Acarol.
Joseph M. Cicero
1
and Diana Sammataro
2
1. School of Plant Sciences, University of Arizona, PO Box 210036, Tucson,
AZ 85721, USA
(e-mail: [log in to unmask]); 2. USDA-ARS Carl Hayden Honey Bee Research
Center, Tucson,
AZ 95719, USA (e-mail: [log in to unmask]).
(Received 3 December 2009; accepted 8 March 2010)
ABSTRACT – Varroa destructor Anderson and Trueman 2000, an ectoparasite of
honey bees,
causes huge economic losses to apiculture annually. Its role as a vector of
diseases is thought to
involve the salivary glands as the terminal organs of transmission. The
salivary glands are paired, oval,
non-acinar organs, closely attached to the base of the gnathosoma and
enveloped in a sheath of
unknown embryological origin. Ultrastructurally, they are characterized by
the surrounding sheath,
and cells that have a strong presence of rough endoplasmic reticulum,
irregular-shaped nuclei, and
secretory spheres surrounded by an otherwise electron-lucent cytosol.
Secretory spheres are sparse in
most peripheral cells and heavily converged about the apical membranes of
interior cells. Interior cells
are positioned radially about the internal duct cells. The internal ducal
lumen is narrow and brush-bordered. The membranes between the ducal lumen
and the gland cell cytoplasm are fused and ruptured,
allowing the salivary spheres to pass into the interior duct for secretion
through the exterior duct. Bacterial
biofilms are associated with the spheres and the rupture. Virus particles
and endosymbionts are also
present in the glands. The external duct remains uncharacterized, but the
assumption that its embryonic
origin is the same as that of the internal duct and surrounding gland cells
is questioned.
--
Juanse Barros J.
APIZUR S.A.
Carrera 695
Gorbea - CHILE
+56-45-271693
08-3613310
http://apiaraucania.blogspot.com/
[log in to unmask]
***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html
Guidelines for posting to BEE-L can be found at:
http://honeybeeworld.com/bee-l/guidelines.htm
|
