S. Sanaee, S. Omidzahir, A. S. Shirazi, M. Akhoundian
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Seasonal distribution and some biological parameters of the Caspian seal (Pusa caspica) in the southeastern region of the Caspian Sea
The Caspian seal (Pusa caspica) from Phocidae family is the only living mammal that exclusively inhabits the landlocked Caspian Sea. This study was first of its kind conducted on the Caspian seals in the southeastern region of the Caspian Sea from 2010 to 2016. Seasonal observations, gender, maturity, biometric parameters and condition index of each observed Caspian seal were studied. Totally 74 live Caspian seals including 42 males and 32 females were observed in this study. The Caspian seals observed in autumn were significantly greater in number than in the other seasons (p 0.05), however, the number of juvenile seals were significantly more than adults (p 0.05). A significant difference was observed between adult and juvenile seals in biometric parameters (p 0.05). Since Caspian seals are listed as endangered species in the IUCN Red List, further research is required to understand the status of this population and conserve the only mammals of the Caspian Sea.
期刊介绍：
1- Living various species (contains animals and vegetal species) in various aquatic ecosystems.
2- Health and diseases of aquatic species.
3- Determining the stocks and specific time and location for catching and reliable exploitation for sustainable development.
4- Methods of propagation and culture of high value aquatic resources.
5- Aquatic stock assessment and the methods of restocking the high value species and suggestion for rate, areas and the time for releasing fish and other aquatic organisms fries.
6- Pollutant agents and their effects to the environments of aquatic species.
7- Feed and feeding in aquatic organisms.
8- Fish processing and producing new products.
9- The economic and social aspects of fisheries.
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