Ecological study of two sea cucumbers (Holothuria parva and Holothuria arenicola) in the Hormozgan and Bushehr provinces of Persian Gulf

The understanding of the distribution and population structure various species in marine environment is very helpful to effectual resource management conservation. This study aimed assess ecological factors relating sea cucumber populations on rocky shores Persian Gulf. Population two were investigated along 6 intertidal sites, including Deylam, Bushehr, Dayer, Nayband, Bostaneh, Lengeh Bushehr Hormozgan Provinces. During period sampling, no cucumbers observed Deylam stations. To address this, 500 individuals collected transported from their natural habitat laboratory. whole study, (Holothuria parva Holothuria arenicola). Highest abundance obtained at stations Dayer (198 individuals) Bostaneh (188 individuals). maximum density (individuals per 200 m2) was estimated for (49.5 ± 6.13) (47 8.79). results revealed a negative allometric growth both species. showed that different indices community areas affected by physicochemical parameters such as pH, temperature, salinity possibly lack correct order enforce more protective approaches these animals.