Spawning periodicity of the green mussel, P. viridis (Linn. 1758), from Moheshkhali channel Bay Bengal, Bangldesh was determined by ‘larval abundance’ method for a period one year November 1990 and October 1991. Higher larval abundance recorded during pre-monsoon (January to April) post-monsoon (September December) months. Two significant peaks in spawning were recorded- major peak September (p...

BACKGROUND The main source of ultraviolet radiation (UVR) is the sun, affecting organs such as the skin, eyes, and immune system. According to American Conference of Governmental Industrial Hygienist (ACGIH) reports, the amount of UVR reaching the Earth's surface is increasing yearly and is responsible for an increase in solar radiation-related diseases. AIMS To investigate the amount of UVR ...

Effects of insulin-like growth factor I (IGF-I) and salmon gonadotropin-releasing hormone (sGnRH) on expression of gonadotropin (GTH) subunit genes were examined using primary pituitary cell cultures of masu salmon (Oncorhynchus masou). Fishes were assessed at three reproductive stages, i.e., in April (early maturation), in June (maturing), and in September (spawning). Amounts of GTH subunit mR...

(1) Snow melt period of December to April in combination with precipitation (typical of lowland and hilly parts of the Labe, Vltava and Morava catchments). (2) Longer duration of rainfall lasting 10 to 72 hours (rainfall intensified and prolonged by elevation enhancement). (3) Intensive short duration of summer rainfall exceeding (flood peak occurring within hours of rainfall peak, small areas ...

Article history: Received 9 April 2009 Available online 17 September 2010 Communicated by Luchezar L. Avramov Dedicated to Professor Claus Michael Ringel on the occasion of his sixty-fifth birthday MSC: 18G25 18E30 16E65

a World Health Organization, Regional Office for the Eastern Mediterranean, PO Box 7608 Nasr City, Cairo, Egypt. b World Health Organization, Geneva, Switzerland. c World Health Organization, Regional Office for the Eastern Mediterranean, Cairo, Egypt. Correspondence to Driss Zine-Eddine El-Idrissi (e-mail: [email protected]). doi:10.2471/BLT.08.053736 (Submitted: 3 April 2008 – Revised v...

Article history: The isotopic composition of Received 18 April 2008 Received in revised form 25 July 2008 Accepted 29 July 2008 Available online 7 September 2008 Editor: M.L. Delaney

Article history: Received 24 April 2009 Received in revised form 10 June 2009 Accepted 2 September 2009 Available online 31 December 2009 The review of this paper was arranged by Prof. O. Engström