Teaching Documents by MOHAMMED OSMAN ALI NAVEED
Drafts by MOHAMMED OSMAN ALI NAVEED
Papers by MOHAMMED OSMAN ALI NAVEED
Aquatic oligochaetes were collected from Adyar River and Estuary in Chennai, Ayyangar Pond and Ma... more Aquatic oligochaetes were collected from Adyar River and Estuary in Chennai, Ayyangar Pond and Mammandur Lake in Kancheepuram. Seven species were identified: Branchiodrilus semperi, Aulophorus furcatus, Dero digitata, D. indica, Branchiura sowerbyi, Limnodrilus hoffmeisteri and a Tubificidae sp. (Monopylephorus parvus?). B. semperi, A. furcatus, D. indica and D. digitata belong to the family Naididae. B. sowerbyi, L. hoffmeisteri and Tubificidae sp. (M. parvus?) belong to the family Tubificidae. B. semperi, D. digitata and D. indica constitute the first report for Kancheepuram District. Tubificidae sp. (M. parvus?) constitutes the first report for Chennai and South India. A key for the identification of aquatic Oligochaeta known from Chennai and Kancheepuram is given.
Turkish Journal of Zoology
Aquatic oligochaetes were studied in 2 lowland regions (the Chennai and Tiruvallur districts) and... more Aquatic oligochaetes were studied in 2 lowland regions (the Chennai and Tiruvallur districts) and a mountainous area (Ooty) in Tamil Nadu, southern India. Quantitative core samples, 2.5 cm in diameter, were collected monthly from April 2005 to March 2006 in Kodungaiyur Swamp and Pandinellur Swamp, the 2 main sites commercially exploited for aquatic Oligochaeta in Chennai. Random qualitative samples were collected from other sites using corers or strainers. In total, 9 naidids and 4 tubifi cids were identifi ed during this survey. Dero indica, D. zeylanica, D. digitata, and Pristina jenkinae are fi rst reports from Chennai. L. hoff meisteri, the worm commercially marketed here as “Tubifex,” was the only tubifi cid species collected from Chennai. Tubifex tubifex and Limnodrilus udekemianus were recorded only from the cooler waters of Ooty. Th e fi nding of L. udekemianus constitutes a fi rst report from India. Branchiodrilus semperi, Dero dorsalis, Aulophorus michaelseni, Pristina bre...
Zoosymposia, 2014
A random survey of aquatic Oligochaeta was conducted in Chennai, Villupuram, Dindugal, Thiruvallu... more A random survey of aquatic Oligochaeta was conducted in Chennai, Villupuram, Dindugal, Thiruvallur, and Sivagangai districts of Tamil Nadu from November 2010 to March 2012. Thirteen taxa were identified from a total of 644 aquatic oligochaetes examined from various qualitative samples of aquatic vegetation and sediments. Chennai district had 3 families: Naididae, Pristinidae and Tubificidae along with a polychaete. The naidids were most diverse with 5 species: Branchiodrilus semperi, Aulophorus furcatus, Dero digitata, Dero indica and Dero zeylanica, the pristinids were represented by Pristina brevichaeta and Pristina jenkinae and the tubificids by 2 species, Branchiura sowerbyi and Limnodrilus hoffmeisteri. The nine aquatic oligochaetes collected from Chennai were already reported from this region. Two naidids, Branchiodrilus semperi and D. indica, along with the tubificid Branchiura sowerbyi, were collected from Villupuram district and they constitute the first reports for that district. Limnodrilus udekemianus from Kodaikanal, Dindugal district constitutes the first report for that region of Tamil Nadu. Megadriles belonging to the family Octochaetidae (Dichogaster bolaui?) and unidentified Megascolecidae collected from Thiruvallur and Sivaganga districts respectively were found to occur in aquatic habitats.
American Journal of Medical Genetics Part A, 2006
The American Journal of Human Genetics, 2006
The American Journal of Human Genetics, 2007
Split-hand/foot malformation with long-bone deficiency (SHFLD) is a rare, severe limb deformity c... more Split-hand/foot malformation with long-bone deficiency (SHFLD) is a rare, severe limb deformity characterized by tibia aplasia with or without split-hand/split-foot deformity. Identification of genetic susceptibility loci for SHFLD has been unsuccessful because of its rare incidence, variable phenotypic expression and associated anomalies, and uncertain inheritance pattern. SHFLD is usually inherited as an autosomal dominant trait with reduced penetrance, although recessive inheritance has also been postulated. We conducted a genomewide linkage analysis, using a 10K SNP array in a large consanguineous family (UR078) from the United Arab Emirates (UAE) who had disease transmission consistent with an autosomal dominant inheritance pattern. The study identified two novel SHFLD susceptibility loci at 1q42.2-q43 (nonparametric linkage [NPL] 9.8, ) and 6q14.1 (NPL 7.12, ). These results were also sup-P p .000065 P p .000897 ported by multipoint parametric linkage analysis. Maximum multipoint LOD scores of 3.20 and 3.78 were detected for genomic locations 1q42.2-43 and 6q14.1, respectively, with the use of an autosomal dominant mode of inheritance with reduced penetrance. Haplotype analysis with informative crossovers enabled mapping of the SHFLD loci to a region of ∼18.38 cM (8.4 Mb) between single-nucleotide polymorphisms rs1124110 and rs535043 on 1q42.2-q43 and to a region of ∼1.96 cM (4.1 Mb) between rs623155 and rs1547251 on 6q14.1. The study identified two novel loci for the SHFLD phenotype in this UAE family. From the Center for Arab Genomic Studies (CAGS), Dubai, United Arab Emirates (M.N.; M.T.A.-A.; N.A.
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Teaching Documents by MOHAMMED OSMAN ALI NAVEED
Drafts by MOHAMMED OSMAN ALI NAVEED
Papers by MOHAMMED OSMAN ALI NAVEED