Aquaculture and Fisheries Commons^™

Streptomyces Leidnematis N. Sp., Growing On Two Species Of Nematodes Of The Cockroach, Glenn L. Hoffman

United States Fish and Wildlife: Staff Publications

In 1948 Mr. J. R. Wennemark called the writer's attention to a filamentous growth extending from the cuticle of Leidynema appendiculata and Hammerschmidtiella diesingi, oxyurid nematodes found in the intestine of the American roach, Periplaneta americana, which was collected in Iowa City, Iowa. Because of the extreme filamentous accumulation it was thought to be the mycelium of a fungus. Further observation on material from roaches reared in Grand Forks, North Dakota, and Detroit, Michigan, showed that the organism was not fungus but a member of the Actinomycetaceae. Slides were sent to Profs. R. S. Breed and H. J. …

Visiting National Wildlife Refuges, Douglas Mckay, John L. Farley

United States Fish and Wildlife: Staff Publications

If you travel in the wilder sections of our country, sooner or later you are likely to meet the sign of the flying goose-the emblem of the National Wildlife Refuges.

You may meet it by the side of a road crossing miles of flat prairie in the Middle West, or in the hot deserts of the Southwest. You may meet it by some mountain lake, or as you push your boat through the winding salty creeks of a coastal marsh.

Wherever you meet this sign, respect it. It means that the land behind the sign has been dedicated by the …

Research Notes: Scaphanocephalus Expansus (Crepl.), A Trematode Of The Osprey, In North America, Glenn L. Hoffman

United States Fish and Wildlife: Staff Publications

Examination of an osprey, Pandion haliaetus carolinensis furnished by Mr. Melvin Hoffman, Strawberry Point, Iowa, May, 1948, revealed about 30 trematodes which proved to be Scaphanocephalus expanses (Crepl.). This species which was redescribed in detail by Jagerskiold, (1904; Results of the Swed. Zool. Exped. Egypt and White Nile 1901 pt. 1) has a very large "expanded" flap-like anterior end and, to my knowledge, resembles no other trematode in that respect. The specimens have been deposited in the U. S. Nat'l Mus. Helm. Coll. as No. 46437. Mr. Allen McIntosh (personal communication) has informed me that S. expanses has been recorded …

Avian Botulism Information On Earlier Research

United States Fish and Wildlife: Staff Publications

Over the years, the disease, avian botulism, has been an important factor limiting populations of waterfowl, particularly in the West. Great numbers (doubtless millions) of ducks have died from this disease, and because of such heavy tolls, studies of the malady were begun early in the century and continued intermittently to the present time.

This summary brings up to 1950 the series of investigations on botulism by Wetmore (1918), Kalmbach (1930, 1932), Kalmbach and Gunderson (1934), Sperry (1947), and others. This information has been compiled as a service to those concerned with conservation of our waterfowl resources. A cooperative agreement …

Mourning Dove Newsletter, Issue No. 7

United States Fish and Wildlife: Staff Publications

This issue contains a summary of Mourning Dove populations data for assistance to the states and the Fish and Wildlife Service in preparing dove hunting regulations. It will also be of interest to all persons working on this important migratory game bird, whether in state game departments, institutions of learning, or individuals.

The previous issue was number 6, June 30, 1952. Since that date many of the southeastern dove projects have either been terminated or modified, so that information has not been gathered as extensively on populations during the past year as formerly. Consequently the major data available at this …