RESUMEN
Length-weight relationship and spawning season of Pickhandle barracuda, Sphyraena jello (C.) were studied for one year in Boushehr waters of the Persian Gulf. In the present study, 311 specimens were collected during November 2006 to October 2007. The samples composed of 151 (48.55%) male, 160 (51.45%) female; the sex ratio was M: F = 1 : 1.06. The b value ranged between 2.77 to 2.87 for male and female fishes, respectively. The relationship between body weight and length in total specimens was 2.82, indicating that this species show negative allometric growth. The peak spawning season of these fishes occur around spring, from April to June. The lowest Gonadosomatic Index recorded in August. The present study is the first record on length-weight relationship and spawning season of this species in the Persian Gulf region.
Asunto(s)
Pesos y Medidas Corporales , Peces , Reproducción/fisiología , Animales , Femenino , Peces/anatomía & histología , Peces/fisiología , Masculino , Estaciones del AñoRESUMEN
The present study is a first attempt to examine sponge distribution in the Persian Gulf (Iranian costs) and suggests that physical and biological factors influence the sponge distribution patterns in Hengam Island. The purpose of this study is to provide patterns of sponges distribution and depth influence on sponge abundance and biomass on the Hengam Island. Surveys of sponge distribution were conducted June 2006 and February 2007 at 5, 10, 15 and 20 m depths sites in two locations: East and West of the Hengam island. Abundance and biomass of sponges species were surveyed at different depths on the Hengam Island in the Persian Gulf. All data on sponges species number and abundance and biomass in each region of Island were taken by SCUBA diving. Transect sampling in this area revealed distribution of sponges species. The sponges species in this area consist of Callyspongia clavata, Callyspongia vasselli, Hyrtios erectus, Haliclona sp., Leucetta sp., Ircinia echinata and Dysidea cinerea. Abundance and biomass of sponges in Hengam Island increased at 15-20 m depths.