...Preserved western cottonmouths were examined for the purpose of determining variation, distribution, food habits, body proportions, embryonic development, and reproductive cycles... 
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Barbour (1956:35) did sort 167 snakes into size classes, but did not determine sex ratio, size at sexual maturity, reproductive cycles, or snout-vent length...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Reproductive potential and cycles in female Crotalus atrox from northwestern Texas...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Each note is a vibrant"waunk," having 110 to 180 pulses per second and dominant frequency of1600 to 2100 cycles per second (Pl...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...These observations indicate only that the populationbreeds at more than one time in the year, but do not provide any evidence onthe breeding cycles of the individual frogs...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...Smilisca phaeota has the lowest upper frequencies;no calls ranged above 4400 cycles per second (cps...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...panamintinus fluctuatewidely, possibly in response to weather cycles...
Terry A. Vaughan 「Mammals of the San Gabriel Mountains of California」
...Mature sperm were found in epididymides at all times of the yearbut were most numerous in spring and autumn, the period betweenspermatogenic cycles ()...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The average dominantfrequency of notes in the short and long series alike is 3400 cycles per second...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...The notes in the short series have anaverage dominant frequency of 2100 cycles per second, whereas the notes inthe long series have an average dominant frequency of 3150 cycles per second...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...The dominant frequency is 4300 cycles per second()...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...The notes have 80 to 120 pulses per second, a fundamental frequency of about 70 cycles per second, and a dominant frequency of 2,840 cycles per second (Table 2, Pl...
Juan R. León 「The Systematics of the Frogs of the Hyla Rubra Group in Middle America」
...The notes are moderately low-pitched and have a dominant frequency of more than 3,000 cycles per second and about 120 pulses per second (Table 2)...
Juan R. León 「The Systematics of the Frogs of the Hyla Rubra Group in Middle America」
...Our cycles clattered to the road...
Raymond King Cummings 「The White Invaders」
...By combining these two numbers of Daniel some cycles of extremeastronomical interest have been derived by De Cheseaux, a Swissastronomer of the eighteenth century, and by Dr...
E. Walter Maunder 「The Astronomy of the Bible」
...He was therefore compelled to retain the useof cycles and epicycles, in order to account for irregularities in theuniformly circular motions of those bodies...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...Ingenious men have suggested many suchkinds of influence, which, according to their investigations,appear to run in cycles of eleven years...
George C. Comstock 「A Text-Book of Astronomy」
...This indicatesno change in the position of the domeof stars, but a change in the direction of the axis of the earthpointing to these various places as the cycles pass...
Henry Warren 「Recreations in Astronomy」
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