Reproductive biology of the Bloch's gizzard shad, Nematalosa nasus (Teleostei: Clupeiformes) in the coastal waters of the Persian Gulf

Somayeh FARYABI, Mohsen SAFAIE, Ahmad NOORI

Abstract

This study was conducted to determine the reproductive biology of Nematalosa nasus for a period of 18 months from September 2016 to April 2018 in the coastal waters of the Persian Gulf. In total, 618 specimens (331 males and 287 females) were collected as bycatch in the shrimp bottom trawl net. Fork length ranges from 95-160 mm (mean 135±0.7mm) and 95 to 169mm (mean 139±0.8mm) in males and females, respectively. The overall sex ratio showed that the males were dominating (1.15:1). Also, the size-specific sex ratio showed that the number of males was more dominant in fork length classes less than 135mm, and females generally dominated at lengths greater than 150 mm. Monthly variations in the Gonad Somatic Index (GSI) and morphological maturity stages of ovary indicated that Bloch's gizzard shad had a long spawning season with two distinct peaks in autumn and winter (from September to February). The smallest females mature Bloch's gizzard shad were found in the size classes 120-124mm of fork length and the Lm50% was estimated at 150mm.

Keywords

Clupeidae, Sex ratio, Spawning season, LM50%, Indian Ocean.

Full Text:

PDF

References

Biswas, S.P. 1993. Manual of Methods in Fish Biology. Delhi, South Asian Publisher. Pvt. Ltd. 157 p.

Carpenter, K.E.; Krupp, F.; Jones, D.A. & Zajonz, U. 1997. FAO Species Identification Guide for Fishery Purposes. The living Marine Resources of Kuwait, Eastern Saudi Arabia, Bahrain, Qatar, and the United Arab Emirates. Rome, FAO. 293 p.

Chen, M.H., & Hsiao, J.S. 1996. The Reproductive Biology of the Gizzard Shad, Nematalosa come (Richarson, 1846), in the Kaohsiung river and its harbor area, Southern Taiwan. Zoological Studies-Taipei 35: 261-271.

Dizaj, L.P.; Esmaeili, H.R.; Abbasi, K.; Valinassab, T. & Salarpouri, A. 2020. Does length-weight equation fit clupeid fishes? An evaluation of LWRs for six clupeids from Iran (Teleostei: Clupeiformes). International Journal of Aquatic Biology 8(2): 126-131.

Eagderi, S.; Fricke, R.; Esmaeili, H.R. & Jalili, P. 2019. Annotated checklist of the fishes of the Persian Gulf: Diversity and conservation status. Iranian Journal of Ichthyology 6(Suppl. 1): 1-171.

FAO. 2011. Report of the FAO Workshop on the Status of Shared Fisheries Resources in the Northern Arabian Sea - Iran, Oman and Pakistan. 13-15 December 2010, Muscat, Oman. FAO Fisheries and Aquaculture Report. No. 971, Food and Agriculture Organisation, Rome, Italy. 58 p.

Fischer, W. & Bianchi, G. 1984. FAO Species Identification Sheets for Fishery Purposes. Western Indian Ocean (Fishing Area 51). Prepared and printed with the support of the Danish International Development Agency (DANIDA). FAO, Rome. Vol. 5.

Fricke, R.; Eschmeyer, W.N. & Van der Laan, R. 2020. Eschmeyer's catalog of fishes: Genera, species, references.http://researcharchive.calacademy.org/research/ich thyology/catalog/fishcatmain.asp.

Hussain, N.A.; Ali, T.S. & Mohamed, A.R.M. 1998. Stock assessment of gizzard shad, Nematalosa nasus (Bloch, 1795) in Khor Al-zubair Estuary Northwest Arabian gulf. Marina Mesopotamica 13(1): 53-67.

Izadifar, F.; Safaie, M. & Momeni, M. 2019. Reproductive biology of Grammoplites suppositus (Troschel, 1840) (Teleostei: Platycephalidae) in coastal waters of the Persian Gulf. Iranian Journal of Ichthyology 6(3): 218-225.

King, M. 2007. Fisheries Biology, Assessment and Management. Blackwell Science Ltd. 382 p.

Nelson, J.S.; Grande, T.C. & Wilson, M.V.H. 2016. Fishes of the World. 5th Edition, John Wiley and Sons, Hoboken. 752 p.

Pauly, D. 1983. Some Simple Methods for the Assessment of Tropical Fish Stocks. FAO Fisheries and Aquaculture Technical Papers 234: 52 p.

Puckridge, J.T. & Walker, K.F. 1990. Reproductive biology and larval development of a gizzard shad, Nematalosa erebi (Gunther) (Dorosomatinae: Teleostei), in the River Murray, South Australia. Marine and Freshwater Research 41(6): 695-712.

Ramya, V.C.; Benakappa, S.; Anjanayappa, H.N.; Jayaraj, E.G.; Somashekara, S.R. & Mahesh, V. 2016. Reproductive biology of Nematalosa nasus (Bloch, 1795) off Mangalore coast, Karnataka. Journal of Experimental Zoology, India 19(1): 313-319.

Ricker, W.E. 1975. Computation and interpretation of biological statistics of fish populations. Bulletin of the Fisheries Research Board of Canada 191: 382.

Riedel, R.; Caskey L.M. & Hurlbert S.H. 2007. Length-weight relations and growth rates of dominant fishes of the Salton Sea: Implications for predation by fish-eating birds. Lake and Reservoir Management 23: 528-535.

Vicentini, R.N. & Araujo, F.G. 2003. Sex ratio and size structure of Micropogonias furnieri (Desmarest, 1823) (Perciformes, Sciaenidae) in Sepetiba Bay, Rio de Janeiro, Brazil. Brazilian Journal of Biology 63(4): 559-566.

Whitehead, P.J.P. 1985. FAO species catalogue. Vol. 7. Clupeoid fishes of the world (Suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. Part 1. Chirocentridae, Clupeidae & Pristigasteridae. FAO Fisheries Synopsis 125: 7(1): 303.

Zhang, J.; Takita, T. & Zhang, C. 2009. Reproductive biology of Ilisha elongate (Teleostei: Pristigasteridae) in Ariake Sound, Japan: Implications for estuarine fish conservation in Asia. Estuarine Coastal Shelf Science 81: 105-113.

Refbacks

  • There are currently no refbacks.