نتایج جستجو برای: herons
تعداد نتایج: 170 فیلتر نتایج به سال:
Centrocestus armatus is an intestinal parasite belonging to the family Heterophyidae. We developed an apparatus for recovering cercariae and clarified the infection dynamics of this parasite. To clarify the circadian rhythm of cercarial shedding in the summer season, we filtrated 30 l of river water every 2 h for 24 h. Cercariae were first detected between 06:00 and 08:00 h, increased over time...
Rasmussen, D. Tab, Storrs L. Olson, and Elwyn L. Simons. Fossil Birds from the Oligocene Jebel Qatrani Formation, Fayum Province, Egypt. Smithsonian Contributions to Paleobiology, number 62, 20 pages, 15 figures, 1986.—^Fossils from fluvial deposits of early Oligocene age in Egypt document the earliest known diverse avifauna from Africa, comprising at least 13 families and 18 species. Included ...
This article provides a preliminary overview of the species wild birds that lived in fourteenth-century County Holland, now Netherlands, on basis archaeological and historical sources. It argues scholars should devote more attention to Late Middle Ages (1300–1500) as baseline for study biodiversity, demonstrates value using medieval financial administration (accounts) source such research. The ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید