The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

 ISSN 0268-0130

2020 Impact Factor for the Herpetological Journal is 0.862


pdf 06. Bunch grass lizard, Sceloporus scalaris, population dynamics at La Michilia biosphere reserve, Mexico

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pp.33-39 

Authors: Alfredo Ortega-rubio, Gonzalo Halffter And Robert Barbault

Abstract: We studied the population dynamics of Sceloporus scalaris from 1 979 to 1 982 using mark-recapture methods. The estimated population density was 50 adults per hectare. The sex ratio was approximately 1:1, with females slightly predominating at older ages. Based on morphological data, four well-differentiated age classes were established - juveniles, sub-adults, adults < 1  yr and adults > 1yr. The mean clutch size was 8.8 eggs per female, but varied widely (5 to 12) in relation to female body size. The estimated number of hatchlings in 10 hectares was 2245 and embryo mortality was 13.89%. After hatching, the average mortality was higher than 76% for all ages and both sexes. The population life table indicates a Slobodkin Type IV survivorship curve, with a net reproductive rate of 1 .059. The average generation time for this population was 1.2 years.

Keywords: lizard, Mexico, population dynamics, Sceloporus scalaris

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IMPORTANT NOTE - JUNE 2020

Please note that as from Volume 31 Number 1 (January 2021) on, the Herpetological Journal will be available as an online publication only - the last print edition will be Volume 30 Number 4.   

Aligning with this change, it is now no longer possible to purchase a subscription that includes a print copy of the HJ.  All members who have existing HJ print subscriptions that remain active as at end June 2020 will receive the full four 2020 print editions.  New subscribers or renewals after this time will only have option to subscribe to the online only subscription package.  Subscription pricing has been amended to reflect the content changes.