Organosomatic indices of invasive species Procambarus fallax (Hagen, 1870) f. virginalis from the Šoderica Lake (Koprivnica)

Žižak, Anita (2015) Organosomatic indices of invasive species Procambarus fallax (Hagen, 1870) f. virginalis from the Šoderica Lake (Koprivnica). Diploma thesis, Faculty of Science > Department of Biology.

[img]
Preview
PDF
Language: Croatian

Download (2MB) | Preview

Abstract

Invasive alien species are one of the main causes of biodiversity loss and degradation of ecosystem services around the world. The ability of rapid range expansion is one of the key determinants of invasive species success. However, our understanding of mechanisms and drivers of rapid range expansion is still limited. The aim of this research was to analyze the potential benefits of dispersal on fitness by using invasive marble crayfish from the Šoderica Lake. We explored this issue by analyzing potential differences between marble crayfish condition in populations with native species. Results of organosomatic condition indices analyses showed that marble crayfish females are in a better condition than the females of native crayfish species. The gonad condition was significantly higher in marble crayfish what explains its high reproductive potential compared to native crayfish species. There were no differences between condition indices between June and July. Further, there were no histomorphological differences between the two studied months, so the marble crayfish females are capable to produce mature eggs throughout a longer period compared to native crayfish species. Obtained results need to be expand with comprehensive research on a larger number of marble crayfish females during a longer period of time.

Item Type: Thesis (Diploma thesis)
Keywords: invasive alien species, marble crayfish, condition, organosomatic indices, gonads
Supervisor: Maguire, Ivana
Co-supervisor: Lucić, Andreja
Date: 2015
Number of Pages: 44
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 23 Mar 2016 12:10
Last Modified: 23 Mar 2016 12:10
URI: http://digre.pmf.unizg.hr/id/eprint/4610

Actions (login required)

View Item View Item

Nema podataka za dohvacanje citata