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  • Indian squid  (2)
  • Aquaculture
  • 1
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    Unknown
    Reproductive biology of Indian squid, Uroteuthis duvauceli (Orbigny, 1835), in the northern Gulf of Oman (2018)
    Details
    Publication Date: 2021-05-19
    Description: Some aspects of the reproductive biology of the Indian squid, Uroteuthis duvauceli, were studied from June 2006 to May 2007. A total of 1200 specimens were collected from approximately 30-80m depths by trawling in 50 stations, of which 360 samples were studied for sex determination and fecundity. The minimum and maximum total and mantle length, and body weight were recorded in December and June, respectively. The highest range of total length (410-420mm), mantle length (150-160mm and body weight (90-100g) were encountered in September. The specimens were composed of 34% male and 66% female (M:F=1:2). This species was found to be more abundant in summer. The minimum and maximum ovary weighs were 2.1g and 7.9g with an average of 4.9g, respectively. These values for nidamental gland weight were 0.70 and 2.61g with an average of 1.6g. The minimum and maximum absolute fecundity were 25510 (in August) and 375600 (in April), respectively. These values for relative fecundity were 5207 (in April) and 867 (in August), respectively. The highest gonadosomatic index (GSI) was in April (14.38) and the lowest was in July (8.63). This squid is, therefore, assumed to be a spring spawner. Minimum and maximum egg diameter were 0.72mm (in August) and 2.5mm (in April), respectively.
    Description: Published
    Keywords: Indian squid ; Uroteuthis duvauceli ; Fecundity ; GSI ; Sex ratio
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.85-96
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  • 2
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    Unknown
    Reproductive biology of Indian squid, Uroteuthis duvauceli (Orbigny, 1835), in the northern Gulf of Oman (2021)
    In:  http://aquaticcommons.org/id/eprint/22337 | 18721 | 2018-03-22 17:59:53 | 22337 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-03
    Description: Some aspects of the reproductive biology of the Indian squid, Uroteuthis duvauceli, were studied from June 2006 to May 2007. A total of 1200 specimens were collected from approximately 30-80m depths by trawling in 50 stations, of which 360 samples were studied for sex determination and fecundity. The minimum and maximum total and mantle length, and body weight were recorded in December and June, respectively. The highest range of total length (410-420mm), mantle length (150-160mm) and body weight (90-100g) were encountered in September. The specimens were composed of 34% male and 66% female (M:F=1:2). This species was found to be more abundant in summer. The minimum and maximum ovary weights were 2.1g and 7.9g with an average of 4.9g, respectively. These values for nidamental gland weight were 0.70 and 2.61g with an average of 1.6g. The minimum and maximum absolute fecundity were 25510 (in August) and 375600 (in April), respectively. These values for relative fecundity were 5207 (in April) and 867 (in August), respectively. The highest gonadosomatic index (GSI) was in April (14.38) and the lowest was in July (8.63). This squid is, therefore, assumed to be a spring spawner. Minimum and maximum egg diameter were 0.72mm (in August) and 2.5mm (in April), respectively.
    Keywords: Biology ; Fisheries ; Indian squid ; Uroteuthis duvauceli ; Fecundity ; GSI ; Sex ratio ; Gulf of Oman ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 85-96
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  • 3
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    A survey and comparison of breeder stocks of shrimp species in the fishing grounds east of Hormozgan province, Iran (2021)
    In:  http://aquaticcommons.org/id/eprint/23751 | 18721 | 2018-07-25 05:55:47 | 23751 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: The main fishing ground for shrimps in Hormozgan province along the Persian Gulf are located in the north of Qeshm Island to Sink area with a yearly catch of 1500m2000 tons from east coast of Hormozgan province located in Iranian waters of Oman Sea. Collection of breeder shrimps in important fishing grounds of Sinik to Jask area was started in 1995 for shrimp culture objectives and the present research was carried out in 2001 to 2002 and 2007, aiming at identifying shrimp species, determining frequency distribution of the species in the catch and evaluating shrimp maturity stages in the catch. Samples were collected using swept area method on a biweekly or monthly basis. Result showed that Fenneropenaeus indicus was dominant in the shrimp catch comprising 44.8-59.5% while this rate was 13.534% for Fenneropenaeus merguiensis, 15.7-20.5% for Penacus semisulcatus, 5.5-16% for Metapenaeus affinis, 0d•14.5% for M stebbingi 04.5% for Parapenaeopsis stylifera in the Jask and Sheik areas in 2001-2002 and 2007. CLm500/0 was 34.7mm for F. indicus females, 31mm for F. merguiensis, 34.3mm for P. misulcatus and 27.16mm for M. affinnis in Jask and Sink areas. Tukey test showed that the average carapace length in F. indicus, F. merguiensis and P. semisulcatus caught in Jask were significantly larger than those from Sink area (P〈0.05). Sex ratio was not 1:1 in these shrimp species and there is significant differences between them (P〈0.05). Maximum abundance of F. indicus, F. semisulcatus, M affninis and F. merguiensis spawners, were found during March to June in Jask and June to July in Sinik areas.
    Keywords: Aquaculture ; Biology ; Shrimp breeder stocks ; Sex ratio ; Hormozgan province ; Hormozgan province ISW ; Oman ISW ; Qeshm I. ISW ; Persian Gulf ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 67-80
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