caa a22 4500 606228055 CHVBK 20210128101201.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10641-014-0364-2 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0364-2 Reproductive biology of the Geno hot spring tooth-carp ( Aphanius ginaonis Holly, 1929) in southern Iran [Elektronische Daten] [Parviz Zare, Mojtaba Naderi, Samaneh Asghari] This study provides fundamental information on some key aspects of the reproductive traits of Aphanius ginaonis, an Iranian endemic, poorly studied cyprinodontid fish species. Samples were taken monthly, from March 2010 to February 2011, from Geno hot spring (Bandar Abbas, Iran). The smallest sexually mature male and female individuals measured 21.1 and 15.1mm and massed 0.15 and 0.06g, respectively. The overall sex ratio (females/males) found to be 1.18. Monthly sex ratios suggested no significant differences, although females demonstrated significantly higher abundances than males at larger length classes. Gonadosomatic index and ovary condition suggested that species reproductive period lasts all year. Oocyte diameter ranged from 0.30 to 2.20mm, with a mean of 1.15 ± 0.49mm. Monthly mean oocyte diameter were not significantly different, ranging from 0.99 (in February) to 1.22mm (in December). Size composition analysis of oocyte diameter showed that females contained mature oocytes (>1.1mm) throughout year. Absolute fecundity of A. ginaonis ranged from 36 to 832 oocytes per individual (mean: 341 ± 209 oocytes), varying considerably at given length and mass. Relative fecundity to total length fluctuated from 12 to 169 oocytes/mm (mean: 78 ± 41 oocytes/mm) while relative fecundity to total mass varied from 61-526 oocytes/g (mean: 213 ± 106 oocytes/g). A. ginaonis is an asynchronous, iteroparous spawner producing more than one oocyte clutch in a single reproductive season. Springer Science+Business Media Dordrecht, 2014 Aphanius ginaonis nationallicence Spawning period nationallicence Oocyte size nationallicence Reproductive strategy nationallicence Fecundity nationallicence Zare Parviz Department of Fisheries, Faculty of Fisheries and Environmental sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran aut Naderi Mojtaba Young Researchers and Elite Club, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran aut Asghari Samaneh Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran aut Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1365-1371 0378-1909 98:5<1365 2015 98 10641 https://doi.org/10.1007/s10641-014-0364-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0364-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zare Parviz Department of Fisheries, Faculty of Fisheries and Environmental sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran aut NATIONALLICENCE 700 1- Naderi Mojtaba Young Researchers and Elite Club, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran aut NATIONALLICENCE 700 1- Asghari Samaneh Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1365-1371 0378-1909 98:5<1365 2015 98 10641