Volume 1, Issue 2 (12-2019)                   JAD 2019, 1(2): 83-89 | Back to browse issues page

XML Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Davoodi F, Raisi A. Effects of adult sex ratio on larvae number and survival of fry in Xiphophorus maculatus (Cyprinodontiformes: Poeciliidae). JAD 2019; 1 (2) :83-89
URL: http://jad.lu.ac.ir/article-1-44-en.html
1- Department of Clinical Sciences, Faculty of Veterinary Medicine, Lorestan University, 6815144316 Khorramabad, Iran
2- Department of Clinical Sciences, Faculty of Veterinary Medicine, Lorestan University, 6815144316 Khorramabad, Iran , raisi.a@lu.ac.ir
Abstract:   (9114 Views)
In this study, differing adult sex ratios of the Southern platyfish, Xiphophorus maculatus were examined for fish larval number and the survival of fish fry. Sixty adult individuals of X. maculatus were randomly divided into 5 equal groups with various male to female sex ratios of 1:1, 1:2, 1:3, 2:1, and 3:1, respectively. After a month when the male and female fish were kept together in different experimental groups, all the female fish became pregnant. Four different factors in each group were recorded - notably the length of pregnancy, number of fry produced, number of live fry after 40 days, and final percentage survival. According to the analyzed data, the number of fry, the number of surviving fry after 40 days, and the percentage survival were significantly higher in the first group with a male to female sex ratio of 1:1 than the other experimental groups. Our results suggest that the best sex ratio for maximum efficiency is 1:1.
Full-Text [PDF 328 kb]   (3604 Downloads)    
Type of Study: Original Research Article |
Received: 2019/10/14 | Accepted: 2019/12/30 | Published: 2019/12/31

1. Changizi, R., Matinfar, A., Jamili, S. and Ghiasvand, Z. (2008). Comparing the breeding indices in different sex ratio and photoperiod in Cichlosoma nigrofasciatum as an ornamental fish. Pajouhesh-va-Sazandegi, 21 (2): 135–143. [in Persian]
2. Esmaeili, H. R., Sayyadzadeh, G., Eagderi, S. and Abbasi, K. (2018). Checklist of freshwater fishes of Iran. FishTaxa, 3 (3): 1–95.
3. Faghani-Langroudi, H., Esmailpour-Chokami, H., Rohani-Rad, M. and Mousavi-Sabet, H. (2014). Sex reversal, mortality rate and growth performance of platy Xiphophorus variatus (Poeciliidae) treated by methyltestosterone. Poeciliid Research, 4 (1): 6–12.
4. Fernando, A. and Phang, V. P. E. (1985). Culture of the guppy, Poecilia reticulata, in Singapore. Aquaculture, 51 (1): 49–63. https://doi.org/10.1016/0044-8486(85)90239-X [DOI]
5. Ghiasvand, Z., Matinfar, A. and Jamili, S. (2009). Survey on photoperiodic and sexual ratio effects on reproduction of Poecilia latipinna. Pajouhesh-va-Sazandegi, 21 (4): 16–24. [in Persian]
6. Harlıoğlu, M. M. and Farhadi, A. (2017). Factors affecting the reproductive efficiency in crayfish: implications for aquaculture. Aquaculture Research, 48 (5): 1983–1997. https://doi.org/10.1111/are.13263 [DOI]
7. Houde, A. E. (1997). Sex, color, and mate choice in guppies: Princeton University Press. 224 pp.
8. Kallman, K. D. (1975). The platyfish, Xiphophorus maculatus, In: King, R. C. (Eds.), Handbook of Genetics. Handbook of Genetics. Springer, Boston, MA. pp. 81–132.
9. Kallman, K. D. (1983). The sex determining mechanism of the poeciliid fish, Xiphophorus montezumae, and the genetic control of the sexual maturation process and adult size. Copeia, 1983 (3): 755–769. https://doi.org/10.2307/1444343 [DOI]
10. Livengood, E. and Chapman, F. A. (2007). The ornamental fish trade: An introduction with perspectives for responsible aquarium fish ownership. University of florida IFAS Extension, 1–8.
11. Mousavi-Sabet, H. (2019). Exotic ornamental fishes in Iranian inland water basins: an updated checklist. Journal of Animal Diversity, 1 (1): 1–10. https://doi.org/10.29252/JAD.2019.1.1.1 [DOI]
12. Mousavi-Sabet, H., Langroudi, H. F. and RohaniRad, M. (2012). Sex reversal, mortality rate and growth of guppy (Poecilia reticulata) affected by 17-alpha methyltestosterone. Poeciliid Research, 2 (1): 1–8.
13. Ng, C. (2016). The ornamental freshwater fish trade in Malaysia: The collection, breeding and marketing of ornamental fishes is a sizable industry. Ultra Agriculture Science Journal, 2 (4): 7–18.
14. Nelson, J. S., Grande, T. C. and Wilson, M. V. H. (2016). Fishes of the World. Fifth Edition. John Wiley and Sons, Inc., Hoboken, New Jersey. 707 pp.
15. Page, L. M. and Burr, B. M. (1991). A Field Guide to Freshwater Fishes: North America, North of Mexico. Houghton Mifflin Harcourt, Boston, USA. 432 pp.
16. Pankhurst, N. (1997). Temperature effects on the reproductive performance of fish. Global warming: implications for freshwater and marine fish, 61: 159.
17. Prodocimo, V. and Freire, C. A. (2001). Critical thermal maxima and minima of the platyfish Xiphophorus maculatus Günther (Poecillidae, Cyprinodontiformes) - a tropical species of ornamental freshwater fish. Revista Brasileira de Zoologia, 18 (1): 97–106. http://dx.doi.org/10.1590/S0101-81752001000500007 [DOI]
18. Shafiee, M., Yahyavi, M. and Yousefi, A. R. (2013). Determination of the breeding indices in different sex ratio of Poecilia reticulate. New Technologies in Aquaculture Development (Journal of Fisheries), 6 (4): 73–80.
19. Zanuy, S., Carrillo, M., Felip, A., Rodrı́guez, L., Blázquez, M., Ramos, J. and Piferrer, F. (2001). Genetic, hormonal and environmental approaches for the control of reproduction in the European sea bass (Dicentrarchus labrax L.). Aquaculture, 202 (3–4): 187–203. https://doi.org/10.1016/S0044-8486(01)00771-2 [DOI]

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

  | Journal of Animal Diversity

Designed & Developed by : Yektaweb