...There is a decided variation in the length oftime required for the completion of the cycle from egg tobutterfly...
Clarence M. Weed 「Butterflies Worth Knowing」
...This butterfly is one of the best known examples of thevariation in the yearly cycle due to differences in latitude...
Clarence M. Weed 「Butterflies Worth Knowing」
...The fang-shedding cycle was found to be highly irregular, with a double condition (on one or both sides) occurring one-third of the time...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...One-half the cycle (from replacement on one side to replacement on the other) varied from five to twenty days, indicating that the cycles for each fang are independent of one another...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...A complete cycle was recorded in ten instances in a period of 19 to 23 days and in two instances in 32 days...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The reproductive cycle in cottonmouths resembles that illustrated by Rahn (op...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Fitch (1956:463) found that copperheads in northeastern Kansas begin their annual cycle of activity in the latter part of April, when the daily maximum temperature is about 22° C...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...An annual cycle may occur in areas where temperature permits year-round activity...
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」
...It may be likened to thenoise made by a motor cycle when it is being started...
Douglas Dewar 「A Bird Calendar for Northern India」
...The Anthrax cycle is thus divided into four periods, each of which corresponds with special forms and functions...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...maritimais monogamous, the pair-bond being maintained throughout a breeding cycle...
Glen E. Woolfenden 「Comparative Breeding Behavior of Ammospiza caudacuta and A. maritima」
...Decreasein size in early June is correlated with the end of the periodof most active mating; maximal size is coincident with the peak ofthe spermatogenic cycle in early September...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The spermatogenic cycle of T...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The ovarian cycle begins in July or August, after ovulation hasoccurred...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Carabao are kept and used as food (), but in the cycle proper no mention is made of using them as work animals...
Fay-Cooper Cole 「Traditions of the Tinguian: A Study in Philippine Folk-Lore」
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