Contribution to the biology of the Lizardfish, Saurida tumbil (Teleostei: Aulopiformes), from the Persian Gulf

Zoology in the Middle East (Impact Factor: 0.41). 01/2006; 38:49-56. DOI: 10.1080/09397140.2006.10638164


Some biological aspects of the Lizardfish, Saurida tumbil, from the Persian Gulf, Iran, were studied by regular monthly collections. A total of 173 specimens, including 17 immatures, 26 males, and 130 females from the Khozestan coasts were collected with a bottom trawl. Females ranged from 26.1 to 59.0 cm (38.7±6.8) in total length and from 126.5 to 1510 g (477.1±260.8) in weight. Males ranged from 26.3 to 38.3 cm (32.7±3.2) in total length and from 128.3 to 450.5 g (260.2±83.5) in weight. The slope of the regression line suggested an isometric growth for the fish. The gut content consisted mostly of fish species and the relative length of the gut (RLG) was 0.45 on average, suggesting a carnivorous feeding habit. The absolute fecundity was 74,444-250,452. The gonadosomatic index showed two peaks for the females (March and October), perhaps indicating that the species is a spring and autumn spawner.

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    • "Condition factor values for males, were the highest in November and December and the lowest in September and August, while for females the highest values were in April and October and the lowest in February and December. This factor has not been studied before in I. hormuzensis to compare with, but usually it is higher in females and in non-spawning fish (Soofiani et al., 2006, Asadollah et al., 2014). "
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    ABSTRACT: The reproductive biology of the Iranian cichlid, Iranocichla hormuzensis Coad, 1988, was investigated for 13 consecutive months in lower Mehran River, from August 2008 through August 2009. Four hundred and eighty six individuals (252 males and 234 females) were captured using a seine net (5 mm mesh size). The observed sex ratio was 1M:0.93F (χ², df = 1, P = 0.414). Mean ± SD of total length (TL) values in females and males were 62.08 ± 6.51 and 70.34 ± 8.16 mm, respectively. The frequency of 56-65 mm size class was higher in females and the 66-75 mm size class in males. A gonadosomatic index (GSI) analyses of females indicated that the reproductive period was during February-June, with a peak in March. Fecundity was best correlated with total body mass (M) (linear regression, r2 = 0.62) condition factor (linear regression, r2 = 0.62) and total length (TL) (linear regression, r2 = 0.56). The absolute fecundity ranged between 48-167 eggs with a Mean±SD of 107±35.2. Egg diameters ranged from 0.58 to 2.93 mm.
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    • "Fully grown and mature oocytes were detected in May and October, when the highest female GSI values were observed. These results are in line with other studies (Budnichenko and Nor, 1978; Soofiani et al., 2006). "
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    • "The feeding diet composition was Nemipterids, Clupeids, Platycephalids, Lieognathids, Engraulids, Soleids, Cephalopods, and Shrimps. This is consistent with results from Izadian et al.,(2006) andSoofiani et al., (2006)in which including above-mentioned food items. Some other fishes such as Haemolids, Sphyraenids, Trichiurids and Scianids were "
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