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DUŽINSKO-MASENI ODNOSI ŠEST SLATKOVODNIH VRSTA RIBA IZ JEZERA KIRKKOJÄRVI U FINSKOJ
- Source :
- Croatian Journal of Fisheries : Ribarstvo, Volume 75, Issue 4
- Publication Year :
- 2017
- Publisher :
- Faculty of Agriculture, University of Zagreb, 2017.
-
Abstract
- Dužinsko-maseni odnosi i dužinsko-dužinski odnosi određeni su za šest vrsta riba: ukliju (Alburnus alburnus), krupaticu (Blicca bjoerkna), balavca (Gymnocephalus cernua), grgeča (Perca fluviatilis), bodorku (Rutilus rutilus) i smuđa (Sander lucioperca) ulovljenih pomoću nordijske mreže s više manjih mreža u jezeru Kirkkojärvi u jugozapadnoj Finskoj u kolovozu 2015. godine. Mjerenja su provedena pomoću fotografske metode i skup podataka je dostupan na Comprehensive R Archive Network (CRAN). Podaci su dobiveni znanstvenim ulovom koji je pokazao niže granice veličine uzoraka od onih iz ribarstva. Dužinsko-maseni odnosi su izračunati za totalnu dužinu te je utvrđeno da su u skladu s podacima iz Finske. Mjerenje dužine odvijalo se na najbližu dužinu od 0,01 cm, što je omogućilo da i mlađ bude zastupljena u modelu. Sposobnost prilagodbe modelu je visoka, s koeficijentom determinacije većim od 95%. Ovo istraživanje je prvo koje procjenjuje dužinsko-masene odnose ribljih vrsta za ovo hipereutrofno jezero i korisno je za ribarsku proizvodnju i biologe.<br />Length-weight relationships (LWRs) and length-length relationships (LLRs) were determined for six fish species: Alburnus alburnus, Blicca bjoerkna, Gymnocephalus cernua, Perca fluviatilis, Rutilus rutilus and Sander lucioperca caught using a Nordic multi-mesh gill net in Lake Kirkkojärvi in Southwestern Finland in August 2015. The measurements were done using a photographic method and the dataset is available on the Comprehensive R Archive Network (CRAN). The dataset was done with a scientific catch, which showed lower limits on specimen size than the ones from fisheries. The LWRs were calculated for the total length (TL) and found to be consistent with models from Finland. The length measurements were taken to the nearest 0.01 cm, which also allowed for juveniles to be represented in the model. The goodness of fit of the models is high, with the coefficients of determination above 95%. This study is the first one to estimate LWRs of fish species for this hypereutrophic lake, and is useful for fishery managers and biologists.
Details
- Language :
- English
- ISSN :
- 18480586 and 1330061X
- Volume :
- 75
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Croatian Journal of Fisheries : Ribarstvo
- Accession number :
- edsair.od.......951..a6bac30912955dfb4c1f5c8d263f3ca0