Determination of sex and maturity in Acipenser stellatus by using ultrasonography

Moghim, M.; Vajhi, Alireza; Veshkini, Abbas; Masoudifard, M.

doi:10.1046/j.1439-0426.2002.00423.x

Cited by 71 publications

(78 citation statements)

References 18 publications

(38 reference statements)

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“…Ultrasonic imaging has proven to be useful as a non-invasive technique to determine the sex and maturity of many commercially valuable freshwater and marine fish species, for example, steelhead (anadromous rainbow trout-Oncorhynchus mykiss) (Evans et al 2004), Atlantic salmon Salmo salar L. (Mattson 1991), cod Cadus morhua (Karlsen and Holm 1994), Atlantic halibut Hippoglossus hippoglossus L. (Shields et al 1993), and stellate sturgeon Acipenser stellatus (Moghim et al 2002). In addition to sex identification, ultrasound can also be used to distinguish immature from mature specimens based on the maximum diameter of the gonad (Blythe et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Ultrasound evaluation of the gonadal structure in sex-reversed rainbow trout females

et al. 2013

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Ultrasound approach has been used to assess morphology of the gonadal structure in the sex-reversed rainbow trout females (neomales) provided in the course of 11b-hydroxyandrostenedione treatment applied within gonadal differentiation period. Eighteen matured individuals (in range 38.0-48.6 cm of body length and 802-1644 g of body weight) were scanned using digital ultrasound apparatus (DP-6900 model) Mindray Ltd., during the spawning season. After screening, fishes were killed to validate the morphological configuration and position of the gonads in the body cavity. The favorable place for cross-sectional imaging of gonadal lobes was half of the distance between the pectoral and pelvic fins below lateral line of neomales. Most of the examined specimens (61 %) had properly shaped, paired testis. Moreover, presence of individuals with asymmetrical gonads (33 %) and one bisexual fish was confirmed. There were no differences between total volume of sampled semen and sperm motility, but statistically significantly different in sperm concentration within selected (with symmetrical and asymmetrical testis) groups of neomales. It was confirmed that ultrasonic imaging is an efficient and accurate method to determine the state of gonads of mature sex-reversed rainbow trout females during spawning season and offers the opportunity for non-invasive detection of any morphological anomalies in their gonads.

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Section: Introductionmentioning

confidence: 99%

Ultrasound evaluation of the gonadal structure in sex-reversed rainbow trout females

et al. 2013

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“…The Persian sturgeon is a native species of the Caspian Sea, but it mainly inhabits in the southern Caspian along the Iranian coast (Moghim, Vajhi, Veshkini, & Masoudifard, 2002). In recent years, the Persian sturgeon contains the largest ratio of the total Iranian commercial catch (Moghim, Kor, Tavakolieshkalak, & Khoshghalb, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Zamaninia¹,

Azizi²,

Heidari³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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In this study, some important immune parameters in the unfertilized and fertilized eggs, larvae of 10 days post hatching (DPH), juveniles of 1 to 12 month post fertilization (MPF) and the female broodstock were evaluated. In the Persian sturgeon, there was a significant decrement in the lysozyme activity from the unfertilized eggs to the 10 DPH larvae and after that, the remarkable variations were not observed. The C3 concentration did not show any significant variations from the unfertilized eggs to the 1 MPF and after that, it significantly decreased. Apart from the fertilized eggs, the variations of the IgM level were similar to the C3 level in the early life stages of the Persian sturgeon. In the Sterlet, the lysozyme level was decreased significantly from the unfertilized eggs to 10 DPH larvae, then it was increased in 1 MPF and finally, a significant difference was not observed from 2 to 12 MPF. The variations of both the IgM and the C3 levels were similar from the fertilized eggs to 12 MPF. In conclusion, the considerable fluctuations of the immune parameters were observed in early life stages especially under 1 MPF which indicates immunologically sensitivity of the fish in these stages.

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“…Unfortunately, overfishing, degradation of habitat and spawning grounds along with environmental pollution have caused these species to be included in the International Union for Conservation of Nature (IUCN) Red List of endangered species (Bahmani et al 2001;Moghim et al 2002). Thus, there has been an increased demand for information on all aspects of sturgeon biology and physiology.…”

Section: Introductionmentioning

confidence: 99%

Blood and seminal plasma enzyme values of Persian sturgeon,Acipenser persicus(Chordata: Osteichthyes)

Aramli

Kalbassi

Nazari³

2013

Italian Journal of Zoology

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An important aspect in the management and protection of endangered species from extinction is the determination of normal physiological values, including the blood and seminal plasma properties. This study was undertaken to establish a reference range for six important blood and seminal plasma enzymes. Samples of 20 Acipenser persicus Borodin, 1897 (10 female and 10 male) were analyzed. The reference ranges for the total samples and also for each sex were determined. The activities of measured enzymes in blood and semen were: alkaline phosphatase (ALP, 363.2 ± 25.24 and 12.23 ± 3.66 IU/L), acid phosphatase (ACP, 4.98 ± 0.39 and 1.86 ± 0.71 IU/L), lactate dehydrogenase (LDH, 1978.8 ± 176.5 and 472 ± 138.7 IU/L), creatine kinase (CK, 1149.6 ± 110 and 553.8 ± 119.9 IU/L), aspartate aminotransferase (AST, 51.12 ± 3.5 and 2.29 ± 1.34 IU/L) and alanine aminotransferase (ALT, 14.7 ± 0.89 and 6.9 ± 2.5 IU/L), respectively. There were significant differences between male and female fish in terms of LDH, CK and ALT activity (P < 0.05). To detect relationships among investigated parameters we used the Pearson correlation coefficient; no significant correlations were observed between these parameters in either blood or seminal plasma.

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Determination of sex and maturity in Acipenser stellatus by using ultrasonography

Cited by 71 publications

References 18 publications

Ultrasound evaluation of the gonadal structure in sex-reversed rainbow trout females

Ultrasound evaluation of the gonadal structure in sex-reversed rainbow trout females

Untitled

Blood and seminal plasma enzyme values of Persian sturgeon,Acipenser persicus(Chordata: Osteichthyes)

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