...Probably the proportionsare a reflection of crowding of the tadpoles in the pools where theyare developing or possibly due to water currents or other environmental factors...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...Regulation of breeding schedules in birds always involves someexogenous, environmental timing or triggering mechanism...
Richard F. Johnston 「The Breeding Birds of Kansas」
...Althoughgonadal response and seasonal restriction of breeding are set bythe photoperiod, specific temporal relationships are dictated by moreimmediate environmental variables...
Richard F. Johnston 「The Breeding Birds of Kansas」
...It would be useful at this point to examinehow environmental variables relate to timing of breeding...
Richard F. Johnston 「The Breeding Birds of Kansas」
...It is not hereby meant to ignore the fact thatdifferential responses to dominant environmental variables occurwithin a species, indicating endogenous control over timing ofbreeding...
Richard F. Johnston 「The Breeding Birds of Kansas」
...Let us assume that each of the environmental variables isa nonlinear oscillator, as is probable...
Richard F. Johnston 「The Breeding Birds of Kansas」
...In the lowlands,musculus may be better adapted to environmental conditions and,therefore, more successful in competition with taylori for availablehabitat...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...Juveniles were more rapidly affected by environmental temperatures,were subject to different thresholds, and were inactive overa wider range than were the adults...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Indeed, the rate of chilling,rather than absolute body temperature alone, might in large measureinfluence the reactions of turtles to environmental temperatures...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...As environmental temperatures rise in summer, the period ofmid-day quiescence is lengthened...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Direct development probablyis an adaptation to adverse environmental conditions since many ofthe species occur in semi-arid or cold (Andean páramos) areas...
John D. Lynch 「Genera of Leptodactylid Frogs in México」
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