Sagittae otoliths are the most studied because of their morphological variability and size; the sagittae may also have valuable taxonomic use and for D. auratus has not yet been described. In the present study we present a morphological description of the sagitta otolith and an analysis of its correlation with various morphometric parameters. The biological material was captured with a beach se...

Chemical analysis of fish otoliths has become an important technique in fisheries science with widespread applications. Most research up to this point has focused predominantly on sagittal otoliths, but the underlying assumptions may also apply to lapilli. The goal of this study was to determine whether lapilli and sagittae have the same otolith chemistry and whether one can be substituted for ...

The relationships between sagitta otolith morphology and fish size were examined for common carp in the Southern Caspian Sea and also the aging of different length groups were determined. Statistical tests to examine correlation between left and right otoliths dimensions were carried out and no statistically significant difference between them was found. The biggest otolith had 0.032g weight be...

The relationships between sagitta otolith morphology and fish size were examined for common carp in the Southern Caspian Sea and also the aging of different length groups were determined. Statistical tests to examine correlation between left and right otoliths dimensions were carried out and no statistically significant difference between them was found. The biggest otolith had 0.032g weight be...

fifty-four specimens of the kingsoldier bream, argyrops spinifer (forsskal, 1775) from coastal waters of the persian gulf, in bushehr province, were aged by otolith readings to assess the suitability of using otolith length/weight for age estimation in this fish. otolith length and weight increased along with an increase in length and age of the fish. the relationship between fish length (tl) a...

A comparative morphological study was performed on the otolith growth patterns of 11 species of the genus Merluccius. The otolith growth pattern, based on the radius of the ¢rst eight growth increments (GI) from the otolith core, was determined from transverse sections of sagitta otoliths.The structure and periodicity of the GI were identi¢ed based on previous knowledge. Two cluster analyses we...

In teleosts, the inner ear is a complicated structure of canals, sacs and ducts filled with endolymph. Each otic sac contains the otoliths of a calcareous structure named sagitta, lapillus or asteriscus (BOND, 1996). The otoliths differ in size and shape. In most species sagitta otolith is the biggest one and mostly used in during the ageing of fish. Even though the otoliths inside the inner ea...

Fish otoliths provide a record of age, growth, and environmental influences. In both trout and turbot, spatial chemical investigation of the endolymph surrounding the otolith (sagitta) showed a lack of uniformity. Proteins, [Formula: see text], and Mg2+ were significantly more concentrated in the proximal (facing the macula) than distal zone, whereas the opposite was observed for K+ and total C...

in this paper age determination and morphological characteristics of blacktip catfish, plicofollis dussumieri, from oman sea were evaluated. a total of 132 fish specimens were collected from fishing trawlers or landings from march 2011 to july 2012, with minimum and maximum of 245 mm, 195 g; and 767 mm, 5801 g, respectively. maximum life span was 12 years for the length range of 245 – 767 mm fl...

The objective of this study was to describe the morphology and morphometry saggitta otoliths Polydactylus virginicus, Menticirrhus cuiaranensis Conodon nobilis in a tropical environment. Fishes were caught with rod reel competitive fishing events promoted 2014-2015 along coast Sergipe. A total 174 pairs sagitta P. 181 M. 77 C. extracted. In general, all three species analyzed here presented dif...