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pro vyhledávání: '"Wendell H, Krull"'
Autor:
Wendell H, Krull
Publikováno v:
Veterinary heritage : bulletin of the American Veterinary History Society. 39(2)
By 1883 a Veterinary Division had been established within the United States Department of Agriculture, itself established in 1862. Federal concern about animal health in the U.S.A. emerged as early as 1865 when Congress adopted regulations aimed at c
Publikováno v:
Journal of the American Veterinary Medical Association. 240(6)
Autor:
Wendell H. Krull
Publikováno v:
Annals of the Entomological Society of America. 22:651-658
In working out the life history of certain trematode parasites which occur as adults in vertebrate animals it was necessary to rear parasite-free dragonflies which serve as intermediate hosts in the life history. Since parasitologists have to rear ho
Autor:
Wendell H. Krull
Publikováno v:
Parasitology. 27:93-100
The life history of Panopistus pricei, as determined experimentally, has been described, together with the life history stages, including the sporocyst, cercaria and metacercaria. The snail Zonitoides arboreus has been determined experimentally to be
Autor:
Wendell H. Krull
Publikováno v:
Zeitschrift für Parasitenkunde. 6:192-206
1. The snailPseudosuccinea columella has been determined as the first intermediate host ofHaematoloechus complexus. 2. Dragonflies,Sympetrum vicinum, Pachydiplax longipennis andHolotania (Libellula) insecta, the last named being laboratory-raised fro
Autor:
Wendell H. Krull
Publikováno v:
Science. 78:508-509
Autor:
Wendell H. Krull
Publikováno v:
Transactions of the American Microscopical Society. 53:196
Autor:
Wendell H. Krull
Publikováno v:
The Journal of Parasitology. 20:49
The occurrence of epizo6tics of fascioliasis among sheep in the Rocky Mountain States has been responsible for an investigation to determine the intermediate hosts of Fasciola hepatica Linn. in that region. Several shipments of snails from Utah were
Autor:
Wendell H. Krull
Publikováno v:
Copeia. 1934:69
SINCE the publication by the writer (Krull, 1932) of a paper in which it was stated that Cercaria bessiae Cort and Brooks, 1928, developed into Neascus ambloplitis Hughes, 1927, in a fish, Eupomotis gibbosus (Linnaeus), repeated experiments with this
Autor:
Wendell H. Krull
Publikováno v:
Transactions of the American Microscopical Society. 52:47