Literaturdatenbank
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Nagy, K. A., Tuma, M. W., & Hillard, S. L. (2011). Shell hardness measurement in juvenile desert tortoises, gopherus agassizii. Herpetological Review, 42(2), 191–195.
Added by: Sarina Wunderlich (18 Nov 2012 17:43:47 UTC) |
| Resource type: Journal Article BibTeX citation key: Nagy2011 View all bibliographic details  |
Categories: General Keywords: Gopherus, Gopherus agassizii, Schildkröten = turtles + tortoises, Testudinidae, Untersuchungsmethoden = examination method, Veterinärmedizin = veterinary medicine Creators: Hillard, Nagy, Tuma Collection: Herpetological Review |
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| Abstract |
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Testudinidae Gopherus agassizii FinaIly, comparisons of juvenile sheIl hardness development between populations or species may elucidate patterns of life-history evolution in response to differential predation patterns. Accordingly, we developed a reliable method for measuring shell "hardness" (compressibility) using machinist's calipers and applied it in a preliminary study of juvenile desert tortoises living and growing under essentially natural conditions in fenced enclosures in the open desert to predict the age and size at fuIl sheIl hardening. SheIl compressibility was measured using a 4-inch (maximum gap size), tension-calibrated, digital micrometer (Aerospace® brand)
Added by: Sarina Wunderlich |