FLUKTUACIJA ASIMETRIJE ŠIRINE OTOLITA KOD Carangoides caeruleopinnatus (CARANGIDAE) ULOVLJENIH NA OBALI MUSCATA U OMANSKOM MORU

The fluctuating asymmetry in two otolith dimensions, the length and width of adult teleost Carangoides caeruleopinnatus were calculated. The highest asymmetry value was observed in the otolith width. The fish length groups 201-210 and 281-290 mm showed the lowest and the highest value of asymmetry respectively. In addition, few fish length groups have shown zero value for otolith size asymmetry. Different pollutants and their presence in the area appeared to be one of the reasons that cause the asymmetry in this species. A trend of increase in the asymmetry values with the fish length was noticed for the otolith length and width.Mjerena je fluktuacija asimetrije dvaju veličina otolita, dužine i širine adultnih koštunjača vrste Carangoides caeruleopinnatus. Najveća asimetrijska vrijednost je zabilježena u širini otolita. Dužinske grupe riba od 201-210 i 281-290 mm pokazale su najnižu, odnosno najvišu asimetrijsku vrijednost. Povrh toga, malo dužinskih grupa analiziranih jedinki je pokazalo nultu vrijednost za asimetriju veličine otolita. Čini se da su različiti onečišćivaći i njihovo prisustvo na istraživanom području jedan od razloga koji uzrokuju asimetriju kod ove vrste. Uočen je trend rasta asimetrijskih vrijednosti dužine i širine otolita s porastom dužine ribe

Record of the largest longtail tuna, Thunnus tonggol (Bleeker 1851) from off shore Salalah in the Sultanate of Oman

Capture of a great Longtail tuna, Thunnus tonggol from off Shore of the city of Salalah, Arabian Sea, Sultanate of Oman in January 2013 is described in this paper. Its morphometric and meristic characters are discussed

The relationships between body and otolith size of the blueline snapper Lutjanus coeruleolineatus (Rüppell, 1838) collected from the coasts of Oman, Arabian Sea

Relationships between fish length and otolith length and width were examined in the blueline snapper Lutjanus coeruleolineatus (Lutjanidae) collected from the coasts of Oman, Arabian Sea. The values of exponent b from the relationships between fish total length and otolith length and total length and otolith width were estimated representing the close fitness of otolith size with fish size. Both relationships were statistically significant, which means both otolith length and width can be used to retrieve the fish original size. The analysis of covariance (ANCOVA) was used to test the effect of the categorical factor of species in the fish length and otolith length relationship. This study represents the first reference available on the relationship of fish size and otolith size for L. coeruleolineatus in the Arabian Sea area. Results from this study will offer original data on quantitative biometric relationships between body and otolith measurements of fish species in Arabian Sea region. By obtaining the mathematical model showing the relationship of the otolith size and fish length will enable fisheries biologists to know the size of the fish that has been eaten an information which important for fish biologists

FLUCTUATING ASYMMETRY IN THE OTOLITH WIDTH OF Carangoides caeruleopinnatus (CARANGIDAE) COLLECTED FROM MUSCAT CITY COAST ON THE SEA OF OMAN

The fluctuating asymmetry in two otolith dimensions, the length and width of adult teleost Carangoides caeruleopinnatus were calculated. The highest asymmetry value was observed in the otolith width. The fish length groups 201-210 and 281-290 mm showed the lowest and the highest value of asymmetry respectively. In addition, few fish length groups have shown zero value for otolith size asymmetry. Different pollutants and their presence in the area appeared to be one of the reasons that cause the asymmetry in this species. A trend of increase in the asymmetry values with the fish length was noticed for the otolith length and width