Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea
In order to determine the reproduction period, the peak time of spawning, length of maturity and mesh standard size for False Trevally (Lactarius lactarius), we conducted a study from November 2007 to October 2008 in coastal waters of the Oman Sea. A total of 702 False Trevally specimens were collected randomly from the catch composition of gillnets and Ferdows-3 stem trawler. Mean total length and total weight were estimated at 22.7 plus or minus 2.13cm and 142.2 plus or minus 41.64g for females and 20.4c 1.89cm and 103.14c 29.07g for males respectively. Male to female sex ratio was 0.37:1 and females were more abundant than males in all months except June and August. Males had smaller sizes than females and the females outnumbered the mails up to the total length 25.5cm. The maximum of GS delta was estimated at 3.69 for females in June and 0.89 for males in July. The trend of GS delta and the frequency of maturity stages showed that reproduction period was from February to September with a spawning peak in August. Absolute fecundity was calculated at 102032 ova and relative fecundity was estimated at 4491.9 ova and 780.7 ova to total length and total weight respectively. Lm sub(50%) (length of maturity) and standard mesh size was calculated at 24.4cm and 3.9cm, respectively.
Main Authors: | , , |
---|---|
Format: | article biblioteca |
Language: | Persian |
Published: |
2009
|
Subjects: | Biology, Lactarius lactarius, Lm sub(50%), Spawning, Fecundity, ISW, Arabian Sea, Oman Gulf ISW, Oman ISW, Iran, |
Online Access: | http://hdl.handle.net/1834/38481 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-aquadocs-1834-38481 |
---|---|
record_format |
koha |
spelling |
dig-aquadocs-1834-384812021-07-15T02:14:35Z Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea Doustdar, M. Vosoughi, Gh. Poorgholam, R. Biology Lactarius lactarius Lm sub(50%) Spawning Fecundity ISW Arabian Sea Oman Gulf ISW Oman ISW Iran In order to determine the reproduction period, the peak time of spawning, length of maturity and mesh standard size for False Trevally (Lactarius lactarius), we conducted a study from November 2007 to October 2008 in coastal waters of the Oman Sea. A total of 702 False Trevally specimens were collected randomly from the catch composition of gillnets and Ferdows-3 stem trawler. Mean total length and total weight were estimated at 22.7 plus or minus 2.13cm and 142.2 plus or minus 41.64g for females and 20.4c 1.89cm and 103.14c 29.07g for males respectively. Male to female sex ratio was 0.37:1 and females were more abundant than males in all months except June and August. Males had smaller sizes than females and the females outnumbered the mails up to the total length 25.5cm. The maximum of GS delta was estimated at 3.69 for females in June and 0.89 for males in July. The trend of GS delta and the frequency of maturity stages showed that reproduction period was from February to September with a spawning peak in August. Absolute fecundity was calculated at 102032 ova and relative fecundity was estimated at 4491.9 ova and 780.7 ova to total length and total weight respectively. Lm sub(50%) (length of maturity) and standard mesh size was calculated at 24.4cm and 3.9cm, respectively. 2021-06-24T18:12:20Z 2021-06-24T18:12:20Z 2009 article TRUE 1026-1354 http://hdl.handle.net/1834/38481 fa http://www.ifro.ir application/pdf application/pdf 55-64 http://aquaticcommons.org/id/eprint/23766 18721 2018-07-25 07:42:26 23766 Iranian Fisheries Science Research Institute |
institution |
UNESCO |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-aquadocs |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Repositorio AQUADOCS |
language |
Persian |
topic |
Biology Lactarius lactarius Lm sub(50%) Spawning Fecundity ISW Arabian Sea Oman Gulf ISW Oman ISW Iran Biology Lactarius lactarius Lm sub(50%) Spawning Fecundity ISW Arabian Sea Oman Gulf ISW Oman ISW Iran |
spellingShingle |
Biology Lactarius lactarius Lm sub(50%) Spawning Fecundity ISW Arabian Sea Oman Gulf ISW Oman ISW Iran Biology Lactarius lactarius Lm sub(50%) Spawning Fecundity ISW Arabian Sea Oman Gulf ISW Oman ISW Iran Doustdar, M. Vosoughi, Gh. Poorgholam, R. Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea |
description |
In order to determine the reproduction period, the peak time of spawning, length of maturity and mesh standard size for False Trevally (Lactarius lactarius), we conducted a study from November 2007 to October 2008 in coastal waters of the Oman Sea. A total of 702 False Trevally specimens were collected randomly from the catch composition of gillnets and Ferdows-3 stem trawler. Mean total length and total weight were estimated at 22.7 plus or minus 2.13cm and 142.2 plus or minus 41.64g for females and 20.4c 1.89cm and 103.14c 29.07g for males respectively. Male to female sex ratio was 0.37:1 and females were more abundant than males in all months except June and August. Males had smaller sizes than females and the females outnumbered the mails up to the total length 25.5cm. The maximum of GS delta was estimated at 3.69 for females in June and 0.89 for males in July. The trend of GS delta and the frequency of maturity stages showed that reproduction period was from February to September with a spawning peak in August. Absolute fecundity was calculated at 102032 ova and relative fecundity was estimated at 4491.9 ova and 780.7 ova to total length and total weight respectively. Lm sub(50%) (length of maturity) and standard mesh size was calculated at 24.4cm and 3.9cm, respectively. |
format |
article |
topic_facet |
Biology Lactarius lactarius Lm sub(50%) Spawning Fecundity ISW Arabian Sea Oman Gulf ISW Oman ISW Iran |
author |
Doustdar, M. Vosoughi, Gh. Poorgholam, R. |
author_facet |
Doustdar, M. Vosoughi, Gh. Poorgholam, R. |
author_sort |
Doustdar, M. |
title |
Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea |
title_short |
Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea |
title_full |
Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea |
title_fullStr |
Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea |
title_full_unstemmed |
Reproduction and maturity of false trevally (Lactarius lactarius) in coastal waters of the Oman Sea |
title_sort |
reproduction and maturity of false trevally (lactarius lactarius) in coastal waters of the oman sea |
publishDate |
2009 |
url |
http://hdl.handle.net/1834/38481 |
work_keys_str_mv |
AT doustdarm reproductionandmaturityoffalsetrevallylactariuslactariusincoastalwatersoftheomansea AT vosoughigh reproductionandmaturityoffalsetrevallylactariuslactariusincoastalwatersoftheomansea AT poorgholamr reproductionandmaturityoffalsetrevallylactariuslactariusincoastalwatersoftheomansea |
_version_ |
1756079764494352384 |