REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRAN
Neogobius caspius is an endemic fish species in the Caspian Sea belonging to the family Gobiidae that ecologically play important role as a predator fish in the food chain. The main objective of this research was determination of some reproductive properties of N caspius in the southwest coasts of t...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Iranian Fisheries Research Organization
2008-01-01
|
| Series: | Majallah-i ̒Ilmī-i Shīlāt-i Īrān |
| Subjects: | |
| Online Access: | http://isfj.areo.ir/article_115343_en.html |
| _version_ | 1817991812041670656 |
|---|---|
| author | A. Sarpanah; A. Cristianos; A. Shabani; Sh. Nezami; B. Shabanpor; Ch. Ben sad |
| author_facet | A. Sarpanah; A. Cristianos; A. Shabani; Sh. Nezami; B. Shabanpor; Ch. Ben sad |
| author_sort | A. Sarpanah; A. Cristianos; A. Shabani; Sh. Nezami; B. Shabanpor; Ch. Ben sad |
| collection | DOAJ |
| description | Neogobius caspius is an endemic fish species in the Caspian Sea belonging to the family Gobiidae that ecologically play important role as a predator fish in the food chain. The main objective of this research was determination of some reproductive properties of N caspius in the southwest coasts of the Caspian Sea. Sampling was carried out with a bottom trawler in three stations (Astara, Anzali and Chabuksar) from October 2004 until September 2005. The species was identified based on meristic parameters. The maximum gonadosomatic index (GSI) was recorded at 7.52% for male and 10.12% for female fish in June. A sharp decrease in GSI value from June to the end of September in both sexes was observed and we found that the spawning of the species takes place several times each year. Hence, the species is considered a late spawner. Female to male sex ratio was 1.47:1. Absolute fecundity was in the range 212-1234 eggs and the relative fecundity fluctuated between 18.73 and 29.89 eggs per each gram of the body weight. The correlation between absolute and relative fecundity with age was positive and with total length and full weight was negative. Egg diameter was in the range 0.06 to 0.23mm. The correlation between egg diameter, age and total length was positive. |
| first_indexed | 2024-04-14T01:18:20Z |
| format | Article |
| id | doaj.art-eb0be743369340bcbca9acce62d84a50 |
| institution | Directory Open Access Journal |
| issn | 1026-1354 2322-5998 |
| language | fas |
| last_indexed | 2024-04-14T01:18:20Z |
| publishDate | 2008-01-01 |
| publisher | Iranian Fisheries Research Organization |
| record_format | Article |
| series | Majallah-i ̒Ilmī-i Shīlāt-i Īrān |
| spelling | doaj.art-eb0be743369340bcbca9acce62d84a502022-12-22T02:20:47ZfasIranian Fisheries Research OrganizationMajallah-i ̒Ilmī-i Shīlāt-i Īrān1026-13542322-59982008-01-011738798REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRANA. Sarpanah; A. Cristianos; A. Shabani; Sh. Nezami; B. Shabanpor; Ch. Ben sadNeogobius caspius is an endemic fish species in the Caspian Sea belonging to the family Gobiidae that ecologically play important role as a predator fish in the food chain. The main objective of this research was determination of some reproductive properties of N caspius in the southwest coasts of the Caspian Sea. Sampling was carried out with a bottom trawler in three stations (Astara, Anzali and Chabuksar) from October 2004 until September 2005. The species was identified based on meristic parameters. The maximum gonadosomatic index (GSI) was recorded at 7.52% for male and 10.12% for female fish in June. A sharp decrease in GSI value from June to the end of September in both sexes was observed and we found that the spawning of the species takes place several times each year. Hence, the species is considered a late spawner. Female to male sex ratio was 1.47:1. Absolute fecundity was in the range 212-1234 eggs and the relative fecundity fluctuated between 18.73 and 29.89 eggs per each gram of the body weight. The correlation between absolute and relative fecundity with age was positive and with total length and full weight was negative. Egg diameter was in the range 0.06 to 0.23mm. The correlation between egg diameter, age and total length was positive.http://isfj.areo.ir/article_115343_en.htmlNEOGOBIUS CASPIUS; fecundity; Caspian Sea; Iran |
| spellingShingle | A. Sarpanah; A. Cristianos; A. Shabani; Sh. Nezami; B. Shabanpor; Ch. Ben sad REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRAN Majallah-i ̒Ilmī-i Shīlāt-i Īrān NEOGOBIUS CASPIUS; fecundity; Caspian Sea; Iran |
| title | REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRAN |
| title_full | REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRAN |
| title_fullStr | REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRAN |
| title_full_unstemmed | REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRAN |
| title_short | REPRODUCTIVE CHARACTERISTICS OF NEOGOBIUS CASPIUS FROM THE SOUTHWEST COASTS OF THE CASPIAN SEA, GUILAN PROVINCE OF IRAN |
| title_sort | reproductive characteristics of neogobius caspius from the southwest coasts of the caspian sea guilan province of iran |
| topic | NEOGOBIUS CASPIUS; fecundity; Caspian Sea; Iran |
| url | http://isfj.areo.ir/article_115343_en.html |
| work_keys_str_mv | AT asarpanahacristianosashabanishnezamibshabanporchbensad reproductivecharacteristicsofneogobiuscaspiusfromthesouthwestcoastsofthecaspianseaguilanprovinceofiran |