TY - JOUR JF - Acarologia T1 - Variations in the size and weight of adults of Ornithodoros marocanus Velu (Acari, Argasidae), according nymphal blood intake VL - 36 IS - 3 SP - 195 EP - 201 PY - 1995 SN - 0044-586X SN - 2107-7207 PB - Les Amis d'Acarologia AU - Olmedo, F.F. AU - Estrada-Pena, A. AU - Espuny, J.C. UR - https://www1.montpellier.inrae.fr/CBGP/acarologia/article.php?id=2276 DA - 1995-10-31 KW - Ornithodoros KW - blood-intake KW - additional nymphal stages KW - adult KW - morphological variation AB - Variations in blood intake by individual nymph-4 specimens of O. marocanus influence the number of instars in the life cycle and generate significant deviations in the measurement and weight ranges in the adults. Fourth-instar nymphs may produce an additional nymphal instar when only limited blood resources are available. Male specimens derived from different nymphal instars, from partially engorged nymphs, or from already fed males, show significant differences in body measurements. Males and females also differ in the amount of blood ingested, according to the previous nymphal instar. ER -