Animal Biology , Vol. 57, No. 4, pp. 409-421 (2007) Koninklijke Brill NV, Leiden, 2007. Also available online - www.brill.nl/ab Life cycle and genetic differences of two Branchipus schaefferi populations from Morocco (Anostraca: Crustacea) LYNDA BELADJAL, PETER H.H. WEEKERS, JOHAN MERTENS ∗ Ghent University, Biology Department, Ecology Unit, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium Abstract —The somatic growth, longevity, and reproduction of two Moroccan anostracan populations from different climatic areas were studied under standardized laboratory conditions. Both populations were subjected to allozyme analyses covering four loci, and molecular analyses of the variable regions, the Internal Transcribed Spacers (ITS1 & ITS2) intervening the nuclear ribosomal genes (18S, 5.8S, 28S rDNA). The ecological characteristics of the life cycle of each population are presented, together with their genetic differences and phylogenetic relationships. Keywords : allozyme; Branchipus schaefferi ; ITS; life cycle; ribosomal DNA; Western Mediter- ranean. INTRODUCTION Ephemeral ponds are characteristically unstable with respect to abiotic conditions. Fairy shrimp (Branchiopoda: Anostraca) colonize successfully such habitats and are adapted to live in waters subject to rapid changes in physical and chemical characteristics. Although much information is available on the ecology of anos- tracans (Gaudin, 1960; Prophet, 1963; Lake, 1969; Bernice, 1972a,
Animal Biology – Brill
Published: Jan 1, 2007
Keywords: ALLOZYME; BRANCHIPUS SCHAEFFERI; ITS; WESTERN MEDITERRANEAN; RIBOSOMAL DNA; LIFE CYCLE
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