Ovarian maturatıon stages in Arabian carpet shark, Chiloscyllium arabicum, during reproduction and nonreproduction Seasons

Farideh Porforugh, Negin Salamat, Abdolali Movahedinia

Abstract

The present study aimed to assess the ovarian tissue structure and plasma levels of the hypophysial-gonadal hormones, including 17-β estradiol, progesterone, GTH-I and GTH-II of the Arabian carpet shark, Chiloscyllium arabicum inhabiting the Persian Gulf in spring (April to July) and autumn (August to December). In this regards, a total of 60 C. arabicum female specimens were collected from the Bahrakan Port, in the north of the Persian Gulf. Fish were bleed after euthanization and biometrical characters and levels of 17-β estradiol, progesterone, GTH-I and GTH-II were measured. Fish were then dissected and samples were taken from the ovary and fixed in Bruin’s solution for 48 hrs. Histological sections were prepared using routine histological techniques and stained with hematoxylin and eosin. Based on the results, four different developmental stages were observed in the ovary in spring, including stage I, stage II (primary oogenesis), stage III (mediate oogenesis), and stage IV (final oogenesis). However, only three first stages were detected in autumn samples. The plasma levels of the studied hormones were higher in spring. Based on the results, spring (especially mid-April to mid-July) is the reproduction season of C. arabicum in the Persian Gulf.

Keywords

Carpet shark, Ovary, 17-β estradiol, Progesterone, Gonadotropin.

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References

Abasi F., Orian SH., Matinfar A. (2003). Histology and morphology of ovary in orange spotted grouper, Epinephelus coioides, from the Persian Gulf. Journal of Pajouhesh and Sazandegi, 66: 68-74. (In Farsi)

Barone M., De Ranieri S., Fabiani O., Pirone A., Serena F. (2007). Gametogenesis and maturity stages scale of Raja asterias Delaroche, 1809 (Chondrichthyes, Raijdae) from the South Ligurian Sea. Hydrobiologia, 580: 245-254.

Biswas S. (1993). Manual of methods in fish biology. South Asian Publishers. pp: 123-125.

Chen W.K., Liu K.M. (2006). Reproductive biology of whitespotted bamboo shark Chiloscyllium plagiosum in northern waters off Taiwan. Fisheries science, 72: 1215-1224.

Compagno L.J.V. (2002). Sharks of the world: An annotated and illustrated catalogue of shark species known to date (Volume 2). Rome: Food and Agriculture Organization of the United Nations. pp: 167-168.

Conde-Moreno M., Galvan-Magana F. (2006). Reproductive biology of the Mako shark Isurus oxyrinchus on the south-western coast of Baja California, Mexico. Cybium, 30(4): 75-83.

Eagderi S., Mojazi Amiri B., Adriaens D. (2013). Description of the ovarian follicle maturation of the migratory adult female bulatmai barbel (Luciobarbus capito, Güldenstädt 1772) in captivity. Iranian Journal of Fisheries Sciences, 12(3): 550-560.

Erfani Majd N., Mesbah M., Rahimi S. (2015). Histometrical study of ovary in silver carp, Hypophthalmichthys molitrix, in two age groups. Journal of Veterinary Research, 70: 203-211.

Jalabert B. (2005). Particularities of reproduction and oogenesis in teleost fish compared to mammals. Reproduction, Nutrition, Development, 45: 261-279.

Khalatbari N. (2013). Determination of gonadal structure and development in female yellowfin seabream. MSc thesis. Khorramshahr University of Marine Science and Technology, pp: 64-67.

Koob T.J., Callard I.P. (1999). Reproductive endocrinology of female elasmobranchs: lessons from the little skate (Leucoraja erinacea) and spiny dogfish (Squalus acanthias). Journal of Experimental Zoology, 284: 557-574.

Lutton B.V., George J.S., Murrin C.R., Fileti L.A., Callard I.P. (2005). The elasmobranch ovary, In: W. Hamlett (Ed.). Reproductive biology and phylogeny of Chondrichthyes: sharks, batoids, and chimaeras. Science Publisher Inc, Einfeld, NH. pp: 237-281.

Mackie M. (2000). Reproductive biology of the halfmoon grouper, Epinephelus rivulatus at Ningaloo Reef, Western Australia Environmental. Journal of Fish Biology, 57: 363-376.

Mateos J., Mananos E., Martinez-Rodrguez G., Carrillo M., Querat B., Zanuya S. (2003). Molecular characterization of sea bass gonadotropin subunits (a, FSHb, and LHbÞ and their expression during the reproductive cycle. General and Comparative Endocrinology, 133: 216-32.

Melamed P., Gur G., Rosenfeld H., Elizur A., Shulz W.R., Yaron Z. (2000). Reproductive development of male and female tilapia hybrids (Oreochromis niloticus X O. aureus) and changes in mRNA levels of gonadotropin (GtH) Ib and IIb subunits. Journal of Experimental Zoology, 286: 64-75.

Omoto N., Maebayashi M., Adachi S., Arai K., Yamauchi K. (2005). The influence of oocyte maturational stage on hatching and triploidy rates in hybrid (bester) sturgeon Huso huso× Acipneser ruthenus. Aquaculture, 245: 287-294.

Querat B., Tonnerre-Doncarli C., Genies F., Salmon C. (2001). Duality of gonadotropins in gnathostomes. General and Comparative Endocrinology, 124: 308-314.

Rima W., Jabado R.W., Saif M., Ghais A.L., Waleed H., Mahmood S., Shivji M.S., Aaron C., Henderson A.C. (2014). Shark diversity in the Persian Gulf higher than previously thought: insights based on species composition of shark landings in the United Arab Emirates. Marine Biodiversity, 27-29.

Rinchard J., Kestemont P., Kühn E., Fostier A. (1993). Seasonal changes in plasma levels of steroid hormones in an asynchronous fish the gudgeon Gobio gobio L. (Teleostei, Cyprinidae). General and Comparative Endocrinology, 92: 168-178.

Roff D.A. (1983). An allocation model of growth and reproduction in fish. Canadian Journal of Fisheries and Aquatic Science, 40: 1395-1404.

Samira S., Assem A., Mourad Mona M. (2008). Reproductive biology (histological & ultrastructure) and biochemical studies in ovaries of Mugil cephalus from Mediterranean water. Journal of Arabian Aquaculture Society, 3: 33-58.

Sohn C.Y., Yoshiura Y., Kobayashi M., Aida K. (1999). Seasonal Changes in mRNA Levels of Gonadotropin and Thyrotropin Subunits in the Goldfish, Carassius auratus. General and Comparative Endocrinology, 113: 436-444.

Tostivint H. (2011). Evolution of the gonadotropin-releasing hormone (GnRH) gene family in relation to vertebrate tetraploidizations. General and Comparative Endocrinology, 170: 575-581.

Tyler C.R., Sumpter J.P., Kawauchi H., Swanson P. (1991). Involvement of gonadotropin in the uptake of vitellogenic into vitellogenic oocytes of the rainbow trout, Oncorhynchus mykiss. General and Comparative Endocrinology, 84: 291-299.

Van Der Kraak G., Lin H.R., Donaldson E.M., Dye H.M., Hunter G.A. (1983). Effects of LH-RH and des-Gly10[D-Ala6] LH-RH ethylamide on plasma gonadotropin levels and oocyte maturation in adult female coho salmon (Oncoskynchus kisutch). General and Comparative Endocrinology, 49: 470-4196.

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