...In the case of somespecies the whole yearly cycle has been adapted to correspondto the yearly history of the cruciferous food plant...
Clarence M. Weed 「Butterflies Worth Knowing」
...The reproductive cycle in cottonmouths resembles that illustrated by Rahn (op...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
... Snails and frogs serve as intermediate hosts for various stages in the life cycle of these flukes...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The diel cycle of activity of cottonmouths is of necessity closely related to the seasonal cycle...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
... Since about half the adult females were fecund, it was concluded that a biennial reproductive cycle occurs in this species...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The annual cycle of activity is dependent upon temperature and thus varies from north to south...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...All these buds whenmature, whether free or fixed, lay eggs in their turn, from which a freshstock arises to renew this singular cycle of growth, known amongnaturalists as "alternate generations...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...The plumage cycle of the California gull (Larus californicus) withnotes on color changes of soft parts...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...For such a distinct and regular feature in the life cycle of thespecies as the retrograde autumnal movement there must be somebiological explanation...
Francis Harper 「The Barren Ground Caribou of Keewatin」
...The daily cycle of T...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Even though there are severalwell spaced periods of unusually heavy rainfall in the courseof a summer, each one initiates a new cycle of migration, matingand spawning...
Henry S. Fitch 「Field Study of Kansas Ant-Eating Frog」
...The time in which egg-clusters are deposited is a good roughindex to events in the breeding cycle...
Richard F. Johnston 「Natural History of the Salamander, Aneides hardii」
...A correspondent, writing to me from one of thecolleges, suggests that our spring really begins inDecember, because the "annual cycle of vegetablelife" seems to start then...
John Burroughs 「Ways of Nature」
...The regularly recurring events of thisgreat cycle, or rather series of cycles, soon stamp themselves evenon the dull mind of the savage...
Sir James George Frazer 「The Golden Bough」
...But it was far otherwise with theannual cycle of the seasons...
Sir James George Frazer 「The Golden Bough」
...This gradualrevolution of the festal Egyptian cycle resulted from theemployment of a calendar year which neither corresponded exactly tothe solar year nor was periodically corrected by intercalation...
Sir James George Frazer 「The Golden Bough」
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