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Seasonal Spermatogenesis in Sympatric Crotalus viridis and Arizona elegans in New Mexico

Robert D. Aldridge
Journal of Herpetology
Vol. 13, No. 2 (Apr. 30, 1979), pp. 187-192
DOI: 10.2307/1563927
Stable URL: http://www.jstor.org/stable/1563927
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Seasonal Spermatogenesis in Sympatric Crotalus viridis and Arizona elegans in New Mexico
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Abstract

Seasonal spermatogenesis was examined in sympatric Crotalus viridis and Arizona elegans in New Mexico. Seminiferous tubule recrudescence and spermatogenesis were similar in these species but were delayed six weeks in A. elegans. This delay appeared to be due to differences in seasonal and diel activities of the two species. The initiation and completion of spermatogenesis can be experimentally induced by warm temperatures, in the abence of a photoperiod (OL:24D) in A. elegans.

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