Temporal and spatial variation in gonadal output of the red gorgonian Paramuricea clavata (Risso, 1826) populations in the Eastern Adriatic Sea

Martinović, Maja (2013) Temporal and spatial variation in gonadal output of the red gorgonian Paramuricea clavata (Risso, 1826) populations in the Eastern Adriatic Sea. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

Red gorgonian Paramuricea clavata is a long-lived coral with important role in the structure and functioning of Mediterranean sublittoral communities. The main goal of this study was to assess the spatial and temporal variation in gonadal output of the red gorgonian populations in the Eastern Adriatic. Sampling was carried out in 3 locations and 2 years (2009 and 2011). There was no variation found in the average number of gonads per polyp (i.e. fecundity) of the female colonies whereas the average number of gonads in male colonies differed between the years and some populations. Temporal and spatial variability was found in the average gonadal volume of both sexes and was caused by significant differences in fecundity and/or gonadal diameter. Taking into consideration a non-significant spatial and temporal variability of female fecundity and the establishment of range of its values for populations that were not recently affected, female fecundity may be proposed as a suitable indicator of potential negative impacts on the reproduction of the red gorgonian in the Adriatic Sea.

Item Type: Thesis (Diploma thesis)
Keywords: Paramuricea clavata, Eastern Adriatic, sublittoral communities, fecundity, gonadal volume
Supervisor: Bakran-Petricioli, Tatjana
Date: 2013
Number of Pages: 51
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 29 Jan 2014 13:53
Last Modified: 22 Sep 2014 12:26
URI: http://digre.pmf.unizg.hr/id/eprint/290

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