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

2021 Impact Factor from Clarivate for the Herpetological Journal is 1.194, an increase of 0.332 from 2020.

pdf 01. Discriminant functions for sex identification in two midwife toads (Alytes obstetricans and A cisternasii)


Open Access


Authors: Jaime Bosch And Rafael Márquez

Abstract: Determining the sex of midwife toads in the field is not easy. Non-pregnant females and males not tending clutches are difficult to sex without dissection. We provide a method to determine the sex of individuals based on the study of linear variables. Fifteen morphological variables were measured from samples of two species of midwife toad in the Iberian Peninsula (Alytes obstetricans and Alytes cisternasii). Some variables, corrected for the size of the animal, show significant differences between sexes. A discriminant analysis between the sexes in both species shows a high power for discrimination (95% in A. obstetricans and 97.6% in A. cisternasii). The significant variables in A. obstetricans were: snout-urostyle length, distance between the nostrils, distance between the anterior end of the middle metacarpal tubercle and the tip of the third finger, and distance from elbow to third finger tip. The significant variables in A. cisternasii were: head width, jaw bottom length, vertical diameter of the tympanum, distance between the nostrils, and tibia-fibula length.

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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.