The ectoparasitic mite Tropilaelaps mercedesae reduces western honey bee, Apis mellifera, longevity and emergence weight, and promotes Deformed wing virus infections

Historically an ectoparasite of the native Giant honey bee Apis dorsata, the mite Tropilaelaps mercedesae has switched hosts to the introduced western honey bee Apis mellifera throughout much of Asia. Few data regarding lethal and sub-lethal effects of T. mercedesae on A. mellifera exist, despite its similarity to the devastating mite Varroa destructor. Here we artificially infested worker brood of A. mellifera with T. mercedesae to investigate lethal (longevity) and sub-lethal (emergence weight, Deformed wing virus (DWV) levels and clinical symptoms of DWV) effects of the mite on its new host. The data show that T. mercedesae infestation significantly reduced host longevity and emergence weight, and promoted both DWV levels and associated clinical symptoms. Our results suggest that T. mercedesae is a potentially important parasite to the economically important A. mellifera honey bee.

1908 wing of Detroit Observatory, E. Ann St., razed, June 1976

Richard Bull, architect. Known at various times as Detroit Observatory, Campus Observatory, Old Observatory. On verso: The razing of the 1908 wing of the Detroit Observatory on East Ann St. provided a fascinating spectacle for some sidewalk observers a few weeks ago... Published: University Record, July 6, 1976, cover

Dedication of Michigan Union wing

Irving Kane and Allen B. Pond, architects. Plans for the Union were on a scale unknown at the time for "club houses" in American colleges and universities: 250 feet long and 200 feet wide. Construction began in 1916 and owing to war time difficulties was not ready to be used by students until 1919. Two new wings to the south were completed in 1936 and 1938. Verso: Dedication of $2,900,000 Union Wing Oct. 30, 1954. Edward Parker, first Union president, Tom Leopold, "55, Union president. 10 AM stone laying ceremony part of the weekend observance of the Golden Anniversary of the Union.

Basic table of commissioning allowances for 18 plane squadrons regardless of type for use in commissioning VMB, VMD, VMFN, VMJ, Group Headquarters, Wing Headquarters Squadrons. (Short title, BuAero BTCA for VMB, VMD, VMFN, VMJ, etc., Apr. 1943)

At head of title: Bureau of Aeronautics.

Special investigation report : wing failure of Boeing 747-131, near Madrid, Spain, May 9, 1976.

Issued Oct. 6, 1978.

Jigs and reels. [music] : containing all favorite reels, jigs, hornpipes, flings, country dances, buck and wing dances, etc., both old and new; for the piano or organ.

Mode of access: Internet.

The architecture of the West Wing of the White House.

Mode of access: Internet.

Fixed wing flight.

April 18, 1980.

Mérode Altarpiece, left wing, Donors

Robert Campin, workshop of; 2 ft. 1 25/64 in.x 10 3/4 in.; oil on oak

Mérode Altarpiece, left wing, Donors: detail

Robert Campin, workshop of; oil on oak

Mérode Altarpiece, right wing, Joseph

Robert Campin, workshop of; 2 ft. 1 25/64 in.x 10 3/4 in.; oil on oak

Mérode Altarpiece, right wing, Joseph: detail

Robert Campin, workshop of; oil on oak

Mérode Altarpiece, right wing, Joseph working on a piece of wood

Robert Campin, workshop of; oil on oak

Mérode Altarpiece, right wing, Joseph: detail

Robert Campin, workshop of; oil on oak