Length-Weight Relationships, Maturity, and Reproductive Season of the Fringelip Mullet Crenimugil crenilabis (Forsskål, 1775) from the Arabian Sea Coast of Oman

Al‐Nahdi, Abdullah; Al-Marzouqi, Abdulaziz; Al-Shajibi, Said; Al-Hosni, Ahmed

doi:10.24200/jams.vol13iss0pp23-32

Cited by 2 publications

(4 citation statements)

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“…3); this may be attributed to fishers targeting large sizes in order to maintain high production (Ama-Abasi et al, 2004). Al-Nahdi et al, (2008) concurrence with our results, where they concluded that females dominated samples of C. crenilabis than males in Oman, Arabian Sea.…”

Section: Resultssupporting

confidence: 92%

“…These results exhibit differences when compared (a) and (b) values determined by other authors for the same species, where in Philippines water Gumanao et al, (2016) revealed that the length varied from 11.5 to 42.5 cm SL and a= 0.037, b= 2.86. In Oman, Al-Nahdi et al, (2008) concluded that the size varied between 12.0 and 54.5 cm TL with mean size of 32.4 cm and a=0.0225 & b= 2.769. The (b) value could be an indicator of the physiological condition of the fish and vary seasonally in response to seasonal variations in environmental condition and changes in the fish wellbeing (Biswas, 1993).…”

Section: Weight At Length Relationshipmentioning

confidence: 99%

“…Helfrich and Allen (1975) concluded the reproduction and the spawning time in Micronesian waters. Al-Nahdi et. al., (2008) studied length-weight relationships, maturity, and reproductive time of C. crenilabis from Oman, Arabian Sea Coast.…”

Section: Introductionmentioning

confidence: 99%

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Population Biology and Dynamics of Fringelip Mullet Crenimugil crenilabis, Forsskål, 1775 from Southern Red Sea, Egypt

Sabrah¹,

El-Ganainy²,

Heneish³

2019

Egypt. J. of Aquatic Biolo. and Fish.

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This study was conducted to assess the biological characteristics and growth pattern of Crenimugil crenilabis for the first attempt in the Egyptian Red Sea. C. crenilabis is a rewarding fish in the Red Sea small scale fishery. 350 samples were obtained seasonally during the period 2017 to 2018 from the commercial fishery operating in Shalatin, southern Egyptian Red Sea. Total length was varied from 24.0 to 49.4 cm (35.0 cm mean, SD: 4.75) and total weight ranged from 157.0 to 1265.0 g (476.58 g mean, SD: 214.47). The weight at length relationship showed an isometric growth pattern (b= 3.052). The von Bertalanffy growth constants K and L∞ were estimated using ELEFAN I method. The growth parameters were found to be K= 0.36/year and L∞=51.5 cm. The annual total mortality coefficient (Z), natural mortality (M) and fishing mortality (F) were estimated to be 1.26, 0.73 and 0.53/ year respectively. The length at first capture (L c ) was calculated at 35.65 cm, while the length at first maturity (L m50 ) was found to be 32.7 for males and 33.3 cm for females. The exploitation rate of C. crenilabis was determined as 0.42, indicating the under-exploited level where the maximum exploitation level reported was 0.5. Thus the study recommended preserving the current level of exploitation rate to conserve the population stock of C. crenilabis from the breakdown.

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Section: Resultssupporting

confidence: 92%

Section: Weight At Length Relationshipmentioning

confidence: 99%

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Population Biology and Dynamics of Fringelip Mullet Crenimugil crenilabis, Forsskål, 1775 from Southern Red Sea, Egypt

Sabrah¹,

El-Ganainy²,

Heneish³

2019

Egypt. J. of Aquatic Biolo. and Fish.

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“…Hepatocyte binucleate was found to increase and sinusoids with well vascularization (Chakrabarti & Chatterjee, 2014;Rajeshkumar, 2015, Abdallah et al, 2013Pinto et al, 2010;Tayel et al, 2014;Yilmaz et al, 2016). GSI and HSI in Mullet fish has fluctuative value based on spesies and location (Abdalhafid & El-Mor, 2014;El-Halfawy et al, 2007;El-Boray et al, 2012;Ghaninejad et al, 2010;Hashemi et al, 2012;Karim, 2017;Maryam et al, 2011;Nahdi et al, 2008;Sulistiono et al, 2001;Mokhtar et al, 2015;Saoudi & Aun., 2014;Wigati & Syafei., 2013;Yones et al, 2016).…”

Section: Gonadosomatic Index (Gsi) Value and Hepatosomatic Index (Hsimentioning

confidence: 99%

Stimulation of gonad maturation in mullet fish Mugil dussumieri using MT, E2, hCG, and Ovaprim hormone

Cahyono

Zairin

Carman

2019

Jurnal Akuakultur Indonesia

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The present study is a preliminary research for producing mullet fry to aquaculture. The research aimed to evaluate stimulation of gonad maturation in mullet (Mugil dussumieri) using hormones. The method used for research was completely randomized design consisting of three treatments and each individual replication was repeated three times. Two experiments were conducted separately with different treatments. First experiment used 9-14.7 cm body length of fish treated with different hormone injections i.e. 4 mg/kg 17α-methyltestosterone (MT), 0.07 mg/kg estradiol-17β (E2), and 0.5 ml/kg 0.9% physiological solution as control. Second experiment used 10-31 cm body length fish treated with 750 IU/kg chorionic gonadotropin (hCG), 0.5 ml/kg Ovaprim, and 0.9% physiological solution as control. Gonadosomatic index (GSI) value of the first experiment on day 60 showed that GSI of E2 treatment (1.31±0.94%) was higher than both MT treatment (1.00±0.51%) and control (0.54±0.20%). On the other hand, the second experiment on day 60 showed that GSI of hCG treatment (7.18±0.59%) was higher than both Ovaprim treatment (3.29±2.66%) and control (6.72±0.32%). Egg diameter frequency distribution for control in the first experiment on day 30 showed that egg size ranged from 9−144 µm. Egg diameter for E2 and MT treatments on day 60 showed that egg size ranged from 9−243 µm and were higher than control. In the second experiment, egg diameter on day 30 for control showed that egg size ranged from 9-144 µm, hCG treatment showed egg size ranged from 9−441 µm, while Ovaprim egg size ranged from 9-111 µm. Blood glucose, blood cholesterol, testosterone and estradiol hormone level in the first and second experiment showed no significant difference. The results showed that estradiol-17β and 17α-methyltestosterone induction in 9-14.7 cm body length mullet increase gonad maturity to stage II while hCG induction in 10-31 cm body length mullet increase gonad maturity to stage III. Keywords : estradiol-17β, hCG, 17α-methyltestosterone, Mugil dussumieri, Ovaprim ABSTRAK Penelitian merupakan rintisan untuk menghasilkan benih ikan belanak dalam wadah budidaya. Penelitian ini bertujuan untuk mengevaluasi pematangan gonad ikan belanak Mugil dussumieri menggunakan hormon. Penelitian dilakukan menggunakan rancangan acak lengkap yang terdiri dari tiga perlakuan dan tiga kali ulangan individu. Terdapat dua percobaan dengan perlakuan berbeda dan dilakukan secara terpisah. Percobaan pertama menggunakan ikan berukuran 9−14.7 cm dengan hormon 17α-metiltestosteron (MT) 4 mg/kg, estradiol-17β (E2) 0.07 mg/kg dan kontrol larutan fisiologis 0.9% 0.5 ml/kg. Percobaan kedua menggunakan ikan berukuran 10−31 cm dengan human chorionic gonadotropin (hCG) 750 IU/kg, Ovaprim 0.5 ml/kg dan kontrol larutan fisiologis 0.9 % 0.5 ml/kg. Nilai gonadosomatic index (GSI) percobaan pertama pada hari ke-60 menunjukkan bahwa pemberian estradiol-17β (1.31±0.94%) lebih tinggi dibandingkan 17α-metiltestosteron (1.00±0.51%) dan kontrol (0.54±0.20%). Hasil percobaan kedua pada hari ke-60 nilai GSI menunjukkan bahwa pemberian hCG (7.18±0.59%) lebih tinggi dibandingkan Ovaprim (3.29±2.66%) dan kontrol (6.72±0.32%). Sebaran frekuensi diameter telur pada percobaan pertama untuk kontrol hari ke-30 menunjukkan kisaran 9−144 µm. Sebaran frekuensi diameter telur untuk estradiol-17β dan 17α-metiltestosteron hari ke-60 menunjukkan kisaran 9−243 µm lebih banyak dibandingkan kontrol. Sebaran frekuensi diameter telur pada percobaan kedua untuk kontrol hari ke-30 menunjukkan kisaran 9−144 µm, hCG 9−441 µm sedangkan Ovaprim hanya 9−111 µm. Kadar glukosa darah, kolesterol darah, hormon testosteron dan estradiol pada percobaan pertama dan percobaan kedua menunjukkan tidak terdapat perbedaan yang nyata. Hasil penelitian menunjukkan bahwa induksi hormon estradiol-17β dan 17α-metiltestosteron pada ikan berukuran 9−14.7 cm dapat meningkatkan kematangan gonad mencapai TKG II sedangkan induksi hormon hCG pada ikan berukuran 10−31 cm dapat meningkatkan kematangan gonad mencapai TKG III. Kata kunci : estradiol-17β, hCG, 17α-metiltestosteron, Mugil dussumieri, Ovaprim

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Length-Weight Relationships, Maturity, and Reproductive Season of the Fringelip Mullet Crenimugil crenilabis (Forsskål, 1775) from the Arabian Sea Coast of Oman

Cited by 2 publications

References 1 publication

Population Biology and Dynamics of Fringelip Mullet Crenimugil crenilabis, Forsskål, 1775 from Southern Red Sea, Egypt

Population Biology and Dynamics of Fringelip Mullet Crenimugil crenilabis, Forsskål, 1775 from Southern Red Sea, Egypt

Stimulation of gonad maturation in mullet fish Mugil dussumieri using MT, E2, hCG, and Ovaprim hormone

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