Aquaculture Sciences

Aquaculture Sciences

Length–weight and length–length relationships of six fish species from the Persian Gulf

Document Type : Original Article

Authors
Ali Taheri Mirghaed 1
Mehdi Ghodrati Shojaei 2
Maryam Weigt 3
Seyyed Morteza Ebrahimzadeh 4
Adib Jahangard 1
Marzieh Abbasi 5
Mehdi Abdolahian 1
1 Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
2 Department of Marine Biology, Faculty of Natural Resource and Marine Science, Tarbiat Modares University, Noor, Iran.
3 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany.
4 Department of Fisheries, Faculty of Natural Resource and Marine Science, Tarbiat Modares University, Noor, Iran.
5 Department of Fisheries, Faculty of Natural Resource, University of Guilan, Sowmeh Sara, Iran.
Abstract
The length-weight and some length- length relationships of six fish species, including Lutjanus malabaricus, Acanthopagrus latus, L. johnii, Rastrelliger kanagurta, Gerres longirostris and Sillago sihama from the Persian Gulf were studied. The specimens were collected from landing centers and their morphometics, including total length (TL), fork length (FL), standard length (SL), body depth (BD), and caudal fin height (FH) measured to the nearest mm and weighed to the nearest 0.1 g. All length-weight relationships were significant, with the coefficient of determination (r2) ranging from 0.84 (G. longirostris) to 0.98 (L. malabaricus) (P<0.01). The parameter b ranged from 2.54 (R. Kanagurta) to 2.98 (S. sihama). The results indicated isometric growth in L. malabaricus, A. latus, L. johnii, and S. sihama andnegative allometric growth pattern in G. longirostris and R. kanagurta. The results indicated that the length-length (TL-FL and TL-SL) relationships were highly correlated and significant for all species (P<0.01). The relationship between TL-BD and BD-FH was also significant, except for R. kanagurta (P>0.01).
Keywords
Length-weight relationship
Morphometrics
Fish
Persian Gulf
Aquaculture Sciences
Volume 8, Issue 1 - Serial Number 1
September 2020
Pages 102-111