Andrej Gajić

 

AKVATORIJ BOSNE I HERCEGOVINE KAO ADAPTIVNA ZONA KLASE CHONDRICHTHYES HUXLEY, 1880

  

DOI: 10.35666/28310438.2014.3.732

UDC:591.9:502(497.6Neum) 

Abstract: Marine part of Bosnia and Hezegovina is definded by internationally recognized borders of Bosnia and Herzegovina; the total length of the coastline that belongs to Bosnia and Herzegovina inside the Neum bay and outside Klek peninsula is 24 km. According to actual check -list of cartilaginous fish from Fauna of Bosnia and Herzegovina (Gajić & Lelo, 2011a; Gajić & Lelo, 2011b), the marine part of Bosnia and Herzegovina, permanently of temporarily resides seven species of sharks and five species of rays, while the 20 members of the obsered group are assert as possible, or expected. Whithin the field research of marine part of Bosnia and Herzegovina "Neum2011" was done by filming the entire Neum bay by a scientificresearch diving team who recorded a three-dimensional topographical map with detailed depictions of the botton in certain locations and biocenosis that inhabited them. Analyzing the data obtained in the aforementioned studies, comes to the conclusion that the bottom of the entire region is composed of extremely small particles of sediment, or silt (less than 1 mm and greater than 1,5 μm). The deepest point is located whith the Neum bay at 27.5 m. Topographically speaking, the entire bottom of Neum bay represents an plateau of an average depth between 17 and 20 m. The author consider that marine part of Bosni and Herzegovina, according to ecological characteristics, can be a suitable habitat for seven species of sharks (which have been already recorded at the given site): Mustelus mustelus (L.), M. Asterias Cloquet, 1821, (?) M. Punctulatus Risso, 1827, Scyliorhinus canicula (L.), S. Stellaris L., Squatina squatina (L.), Squalus acanthias L.; and five species of rays: Raja clavata L., R. Miraletus L., Torpedo marmorata (Risso, 1810), Dayiatis pastinaca (L.), and Myliobatis aquila L.. Although recorded, blue shark (Prionace glauca (L.)) is not represented as a permanent inhabitant of the observed region and, like all other spedcies that are listed as possible or could be expected to swim into but not into the waters of Bosnia and Herzegovina.

Key words: Neum Bay, Sharks, rays, fieldwork.

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