Papers by Emin Teskeredžic
Nacrt Nacionalnog izvješća o stanju mora, poglavlje 17, www.mzopu.hr
DOAJ (DOAJ: Directory of Open Access Journals), Mar 1, 2004
Patogeni mikroorganizmi i toksini koje prenose školjkaši iz onečišćenih područja - zoonoze
Croatian journal of fisheries : Ribarstvo, Dec 20, 2005
DOAJ (DOAJ: Directory of Open Access Journals), Sep 1, 2001
Croatian Journal of Fisheries, 1999
Croatian journal of fisheries : Ribarstvo, Dec 24, 2002
U radu je prikazano povijesno i religijsko zna~enje crvenog koralja. Dani su podaci o na~inu i ko... more U radu je prikazano povijesno i religijsko zna~enje crvenog koralja. Dani su podaci o na~inu i koli~inama va|enja. Detaljno su opisane biologija i fiziologija te 'ivotinje. Prikazana je mogu}nost kontroliranog uzgoja, te potrebe za daljnjim razvojem. Dane su osnovne smjernice potrebnih znanstvenih istra'ivanja kako bi se dobili odgovori na niz nepoznanica u biologiji i fiziologiji, pa i patologiji ovoga zanimljivog organizma. Izneseni podaci upozoravaju na nu'nost pa'ljivog pristupa u iskori{tavanju toga prirodnog bogatstva.
Ribarstvo, 1999
Sa'etak U Hrvatskoj postoji duga tradicija uzgoja {koljaka, uz perspektivu daljnjeg razvoja {kolj... more Sa'etak U Hrvatskoj postoji duga tradicija uzgoja {koljaka, uz perspektivu daljnjeg razvoja {koljkarstva. Budu}i da su {koljke osjetljivi organizmi koji zahtijevaju posebne uvjete uzgoja i klime, podlo'ne su i mnogim bolestima. Bonamiozu, haplosporidiozu, marteiliozu, mikrocitozu i perkinsozu navodi Me|unarodni ured za epizootije kao bolesti {koljaka koje se prijavljuju po zakonu, a iridovirozu kao bolest od potencijalnog me|unarodnog zna~enja. Iste su bolesti Zakonom o veterinarstvu iz godine 1997. regulirane kao zarazne bolesti {koljaka ~ije je spre~avanje i suzbijanje od interesa za Republiku Hrvatsku. Iako se ne suzbija po zakonu, u tekstu je ovoga ~lanka, zbog svoje va'nosti, opisana i Mytilicola bolest. Prema Pravilniku Ministarstva zdravstva iz godine 1994., jestivi dio {koljaka pretra'uje se na toksine nekih morskih dinoflagelata, koji mogu biti {tetni za ljudsko zdravlje, a to su PSP (Paralytic Shellfish Poison), DSP (Diarrhoeic Shellfish Poison) i NSP (Neuroparalytic Shellfish Poison).
Croatian Journal of Fisheries, 2004
Aeromonas hydrophila i druge bakterije roda Aeromonas ubikvitarne su u vodenom okoli{u i dio su n... more Aeromonas hydrophila i druge bakterije roda Aeromonas ubikvitarne su u vodenom okoli{u i dio su normalne bakteriolo{ke flore mla|i kalifornijske pastrve. Infekcije uzrokovane tim bakterijama registrirane su u mnogim zemljama svijeta. U ovom su radu prikazana na{a iskustva i spoznaje s aeromonasnom bakterijemijom, kao uzrokom uginu}a mla|i kalifornijske pastrve. U studenome 2003. pastrvska mla| u dobi od 7 mjeseci po~ela je iznenada ugibati. U Laboratorij za istra'ivanje i razvoj akvakulture dostavljeno je 17 uzoraka riba, uginulih i moribundnih pastrvica, koje su odmah i pregledane. Primjenom Api 20 NE testova identificiran je Aeromonas hydrophila / caviae tip I s 99,9 % to~nosti (1 test protiv), odnosno Aeromonas hydrophila / caviae tip II s 99,5 % to~nosti (1 test protiv) iz uzoraka uzetih iz jetre, slezene, bubrega, crijeva i o~nih lezija. Svi izolirani i identificirani sojevi testirani su na osjetljivost prema antibioticima disk difuzijskom metodom. Utvr|ena je najve}a osjetljivost na flumekvin, a relativno slabija prema kloramfenikolu i enrofloksacinu. Lije~enje je uspje{no provedeno Flubactinom ®. Klju~ne rije~i: kalifornijska pastrva, Aeromonas hydrophila / caviae. UVOD Pripadnici roda Aeromonas gram-negativne su {tapi}aste bakterije, oksidazapozitivne i fakultativno anaerobne, te fermentiraju glukozu. Ubikvitarne su bakterije u vodenom okoli{u i ~ine dio normalne bakterijske flore mla|i kalifornijske pastrve (K a p e t a n o v i } i T e s k e r e d ' i }, 2003). Infekcije uzrokovane vrstama roda Aeromonas registrirane su u mnogim zemljama u svijetu (A u s t i n i A u s t i n, 1999). Patolo{ke promjene kao posljedica infekcije uklju~uju ulceracije na ko'i, gnjiljenje repa i peraja, ulceracije oka, eritroder
Izvještaj o fizikalno-kemijskoj i biološkoj kvaliteti vode i sedimenta na uzgajalištu riba u uvali Movar, Rogoznica
Fish Pathology, 2007
We investigated the presence of Flavobacterium psychrophilum in the ovarian fluids of female adul... more We investigated the presence of Flavobacterium psychrophilum in the ovarian fluids of female adults (eight rivers) and the fry kidney tissues (nine hatcheries) of chum salmon Oncorhynchus keta in Hokkaido, Japan in 2005. F. psychrophilum was detected by culture in 3.3-90.0% of ovarian fluid at all rivers and 5% of kidney tissue at one hatchery, whereas 33.3-100% and 5.0-42.5%, respectively, at all the sampling sites were positive in nested PCR targeting 16S rDNA of F. psychrophilum. Isolated bacteria were identified by an agglutination assay, the nested PCR assay, biochemical tests and PCR targeting gyrB gene. Intraperitoneal injection with 5.3 ¥ 10 5 to 3.9 ¥ 10 6 CFU of the isolates/g to chum salmon, rainbow trout O. mykiss and masu salmon O. masou juveniles (5.3-6.4 g) resulted in cumulative mortalities of 10-70%, 4-26%, and 20-95%, respectively. These results suggest that the bacterium is widely distributed at high frequency in adult female chum salmon in Hokkaido and virulent to salmonid fishes.
Istraživanje procjene stanja(Monitoring) ribljeg fonda područja rijeke Kupe, Korane, Dobre, Mrežnice i Zrmanje
Izolacija bakterija kvarenja iz lubina uzgajanih u Jadranskom moru
Sastav Mikrofitobentosa U Rijeci Sutli
DOAJ (DOAJ: Directory of Open Access Journals), Apr 1, 1997
Dvadeset Godina Istraživanja I Uzgoja Školjkaša U Ušću Rijeke Krke
Croatian journal of fisheries : Ribarstvo, Sep 28, 2001
Aminotransferase responses of coho salmon (Oncorhynchuss kisutch, Walbaum) to sea water challenge test in relation to temperature and salinity
Periodicum Biologorum, 2002
In the Adriatic environment, a decision regarding the most advantageous timing for smolt transfer... more In the Adriatic environment, a decision regarding the most advantageous timing for smolt transfer may be more complex due to higher prevailing temperatures and greater salinities than seen for example in the Pacific. The blood, blood enzymes in particular, as reliable parameters for any metabolic activity, give an indication to the changes which might have caused them. The main objective of this study was to clarify how differently water temperature and salinity affect the apartate and alanin aminotransferase (AST and ALT) levels during sea water acclimation of coho salmon smolts. Challenge test was performed in the Adriatic Sea, Croatia (Cro) and Pacific seawater, Canada (Ca). Blood samples were collected fro eaqual numbers (n=7/time point) of two fish groups at regular predetermined intervals in fresh water (fw) and after entering seawater (sw) for up to 8 days. Enzymes AST and ALT were determined using Chem-1 analyzer. Higher temperatures and greater salinities in the Adriatic than in the Pacific were established. In fw plasma ALT values between Cro and Can coho were not statistically significant. After transfer to sw, ALT-Cro levels decreased and were lower to the 8th day. ALT-Can values decreased during the 24 hours post transfer and then slowly increased to the 8th day. No significant differences were found between AST-Can and AST-Cro levels at the beginning of the experiments in fw. After 8th day plasma-Can were significantly higher than AST-Cro levels (p<0.05). This can be explained as a consequence of stress caused by osmoregulatory adaptation but also as a result of exposure to different water tempreature and salinity.
Aquaculture, Apr 1, 1990
In a rearing experiment on production of fish for consumption, 10 000 amago salmon (Oncorhynchus ... more In a rearing experiment on production of fish for consumption, 10 000 amago salmon (Oncorhynchus masou rhodurus) eggs were imported to Yugoslavia from Japan. Incubation of eyed eggs and early rearing of fry up to smoltification followed the standard methods adopted for rainbow trout and coho salmon culture in Yugoslavia. Smolts of 40-60 g, obtained after a IO-month rearing period, were transferred to floating cages in brackish-sea water on the Adriatic coast. After another 7 months the fish had reached an average weight of 458 g, and an attractive coloration of silver with red spots. Taste and chemical composition of the meat matched that of cultured rainbow trout. Marked differences in body weight between male and female salmon emphasize the desirability of development of an all-female stock for cage culture. Fish left in cages during the summer showed no mortality although water temperatures as high as 26°C were observed. Due to the successful rearing of fry and acclimatization of smolts to cage culture in brackish-sea water, amago salmon appear to be very promising for commercial aquaculture in countries outside Japan. BACKGROUND HISTORY Yugoslavia is a country with a relatively long tradition of fish culture. Besides warm-water cyprinid species, which are produced in a quantity of about 20 000 tonnes (Anon., 1987), production of salmonids is also significant. This culture started with the import of rainbow trout (Oncorhynchus mykiss) from the U.S.A. in 1890. In the beginning, rainbow trout were cultured for stocking in lakes and rivers. Later on they were cultured for consumption (BojEic, 1982). The present annual production of salmonids in freshwater is about 4000 tonnes (Anon., 1987). Research started in 1980 on the feasibility of culturing rainbow trout and in
U dostupnoj literaturi nema podataka o strukturi bakterijske flore kod li~inki i mla|a kalifornij... more U dostupnoj literaturi nema podataka o strukturi bakterijske flore kod li~inki i mla|a kalifornijske pastrve u prvim danima 'ivota. Zadatak je na{eg rada bio pratiti bakterijsku floru od 3. do 8. tjedna 'ivota. Tijekom 35 dana pokusa utvr|ivana je bakterijska flora kalifornijske pastrve uz pra}enje fizikalnokemijskih parametara kvalitete vode i njezina utjecaja na zdravlje. Uzorci za bakteriolo{ku pretragu uzimani su sa {krga, srca i podru~ja bubrega i inokulirani na podloge. Bakterijske su kolonije pregledane makroskopski, razmazi su obojeni po Gramu, a zatim su na~injeni biokemijski testovi. Pri identifikaciji primjenjivan je APILAB Plus program (bio Mérieux, France). Bakterijska flora li~inki i mla|a kalifornijske pastrve mijenjala se je sa staro{}u. Fizikalno-kemijske karakteristike vode kretale su se unutar optimalnih vrijednosti. Od inokuliranog materijala najvi{e je izraslo bakterijskih kolonija s izolata {krga (64,4 %), zatim iz srca (21,8 %) i iz podru~ja bubrega (13,8 %). Bakterijsku floru li~inki u inkubatoru ve}im su dijelom tvorile gram-pozitivne bakterije (64,7 %), i to vrste: Renibacterium salmoninarum (23,5 %), Lactobacillus spp. (11,8 %), Staphilococcus spp. (17,6 %) i Corynebacterium aquatile (11,8 %). Premje{tanje li~inki iz inkubatora u bazene reduciralo je bakterijsku floru (-66,7 %) nakon 45 minuta boravka u bazenu. Gram-negativne bakterijske vrste koje su u li~inki u inkubatoru bile zastupljene u niskom postotku (35,3 %), premje{tanjem li~inki u bazene postale su dominantne i ~inile su vi{e od 95 % bakterijske flore li~inki,
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Papers by Emin Teskeredžic