DUŽINSKO-MASENI ODNOS I ODNOS DUŽINA-DUŽINA KOD ŠEST VRSTA RIBA IZ PERZIJSKOG ZALJEVA

Length–weight relationship (LWR) and length–length relationship (LLR) were estimated for six species of ponyfishes captured in the Persian Gulf, Iran. The LWRs indicated isometric growth in ornate ponyfish (Equulites lineolatus), common ponyfish (Leiognathus equulus) and deep pugnose ponyfish (Secutor ruconius) species, positive allometric growth in striped ponyfish (Aurigequula fasciata) and negative allometric growth in decorated ponyfish (Nuchequula gerreoides) and orangefin ponyfish (Photopectoralis bindus). LWR and LLR parameters for one of the species (E. lineolatus) are given for the first time. The relationships between TL, FL and SL were all linear and highly correlated (for all cases: r2 > 0.97).Dužinsko-maseni odnos (LWR) i odnos dužina-dužina (LLR) procijenjene su na šest vrsta riba ulovljenih u Perzijskom zaljevu, Iran. Dužinsko-masenim odnosom ustanovljen je izometrijski rast kod vrsta Equulites lineolatus, Leiognathus equulus i Secutor ruconius, pozitivni alometrijski rast kod Aurigequula fasciata i negativan alometrijski rast kod Nuchequula gerreoides i Photopectoralis bindus. LWR i LLR parametri vrste E. lineolatus prikazani su po prvi put. Odnosi između TL, FL i SL su linearni i visoko korelirani (za sve slučajeve: r2> 0,97)

Dužinsko-maseni odnos 18 vrsta riba iz Persijskog zaliva

Dužinsko-maseni odnos (LWR) je opisan kod osamnaest vrtsa riba ulovljenih duž obala Hormoz moreuza u Persijskom zalivu, Iran. Izlovljeno je ukupno 2328 jedinki od jeseni 2013. do zime 2014. godine sa strašinom za lov gambora i obalnom klopkom. LWR je izračunat korišćenjem stepene jednačine Vrednosti parametra b su bile bliske vrednosti 3 kod malabarskog crvenog pagara (Lutjanus malabaricus), tigrozube kavale (Otolithes ruber), srebrnastog silaga (Sillago sihama), salaha (Equulites lineolatus), glatkozubog konja (Leiognathus equulus) i konjića (Secutor ruconius), vrednosti parametra b značajno veće od 3 su zabeležene kod prugastog konjića (Aurigequula fasciata) i indijskog iverka (Psettodes erumei), a vrednosti parametra b značajno manje od 3 su zabeležene kod vrste pagar žutoperajar (Acanthopagrus latus), srpa (Drepane longimana), indijskog arbuna (Lethrinus lentjan), skakavice (Liza klunzingeri), indijskog pagra (Lutjanus johnii), plotice (Parastromateus niger), kopljastog gruntera (Pomadasys kaakan), zmijičnjaka (Trichiurus lepturus), šarenog konjića (Nuchequula gerreoides) i vrste Photopectoralis bindus. Do sada nisu postojale u bazi FishBase LWR kod četiri istraživane vrste u ovom radu, a takođe je zabeležena i nova maksimalna dužina za vrstu pagar žutoperajar. Rezultati dobijeni u ovom radu mogu biti od pomoći biolozima i upravljačima koji se bave ribarstvom u Persijskom zalivu

FIRST RECORD OF HARRY HOTLIPS Plectorhinchus gibbosus (Lacepède, 1802) (Perciformes: Haemulidae) FROM THE IRANIAN COAST OF THE GULF OF OMAN

Plectorhinchus gibbosus iz porodice roktaljki (Haumulidae) roda Plectorhinchus zabilježen je prvi put s iranske obale Omanskog mora, zaljeva Chabahar (25 ° 18\u27N, 60 ° 37\u27E).Identifikacija je potvrđena usporedbom morfoloških podataka prikupljenog uzorka s podacima sličnih vrsta s ovog područja.Harry hotlips (Plectorhinchus gibbosus), belonging to the fish family Haeumulidae, is recorded for the first time off the Iranian coast of the Oman Sea, Chabahar Bay (25°18\u27N, 60°37\u27E). Identification confirmed by comparing morphological data of the collected specimen with data of reported congener species off this area

Competitional settlement of brown alga Iyengaria stellata and soft coral Zoanthous sansibaricus on muddy and muddy-rubble intertidal substrate in the Hormuz island

The effect of substrates on the surface cover by the soft coral, Zoanthus sansibaricus, and the brown alga, Iyengaria stellata, and their competitional condition, was compared in Hormuz Island by estimating of coverage area in 40 quadrates (50×50 cm). This soft coarl (Zoanthid) is a dominant species in the island’s intertidal zone and I. stellata is a dominant macroalgea most of the year. Significant negative correlation (p<0.01; r =-0.607) revealed competition between the two species for settlement on the two substrates. Soft coral with 61.7% coverage was dominant vs. 16.8% for brown algae on muddy-rubble substrate, but on sandy-rubble substrate, the brown algae was dominant with 37.8% coverage vs. 19.5% for the soft coral. It seems that better competitional conditions in settlement on unconsolidated substrate have some advantages for Z. sansibaricus

Morphological variation and Taxonomic validation of gill raker characteristics in Caspian marine shad (Clupeidae: Alosa braschnikowi)

We used 50 specimens of Alosa braschnikowi (A. brschnikowi) to study the growth effect on Gill raker morphology. Gill rakers counted as 26-47 which increased in relation to increase in TL (P<0.05). Gill raker lengths and the length:width ratio decreased with a high coefficient of relationships (R2=0.818 and 0.634 subsequently) regarding the increase of TL. The proportion of gill raker length to gill filament length decreased with increased TL. Results indicated selective filter feeding behavior of A. braschnikowi and variation of gill raker morphological characteristics with TL increase during growth

First Record of Harry Hotlips Plectorhinchus gibbosus (Lacepède, 1802) (Perciformes: Haemulidae) From the Iranian Coast of the Gulf of Oman

Harry hotlips (Plectorhinchus gibbosus), belonging to the fish family Haeumulidae, is recorded for the first time off the Iranian coast of the Oman Sea, Chabahar Bay (25°18′N, 60°37′E). Identification confirmed by comparing morphological data of the collected specimen with data of reported congener species off this area

A new record confirms the occurrence of Aphanius mesopotamicus Coad, 2009, in southwestern Iran (Actinopterygii: Cyprinodontidae)

We report the occurrence of Mesopotamian tooth carp, Aphanius mesopotamicus Coad 2009, in a southern branch of the Karkheh River, 10 km west of Hoor-Al-Azim Wetland. This is the first report of successful collection of this species after its first collection in 1978-80 and futile efforts during the last three decades and after its original description based on those old museum specimens

The squaretail mullet Ellochelon vaigiensis (Quoy & Gaimard, 1825) a complex of cryptic species?

The teleost family Mugilidae is speciose with uniform morpho-anatomical characteristics, which render species identification difficult. The dna barcoding technique has, however, proven to be a precise and reliable approach for species delineation. To date, dna barcoding flags numerous polyphyletic species in Mugilidae that probably correspond to species complexes and that call for further taxonomical investigation. Among these species, the squaretail mullet Ellochelon vaigiensis is an interesting case study because, unlike other mullet species, it is easily identified from its unique phenotype. Recent studies of genetic diversity in this monotypic species have revealed two lineages, located either in the Indo-Pacific (Polynesia and Taiwan waters) or along Australian shores. In this study, a third lineage is described in the North of the Indian Ocean, based on nucleotide polymorphisms of Cytochrome c oxidase 1 and barcodes available in bold and Cytochrome b. Despite genetic divergences that exceed the intraspecific threshold, there was no morpho-anatomical difference among specimens of the north Indian Ocean vs. Indo-Pacific or Australia. These molecular results suggest nominal species of Ellochelon vaigiensis within a cryptic species complex