Age and growth of three common species of goatfish exploited by artisanal fishery in Hurghada fishing area, Egypt

Abstract

Summary The age and growth of three goatfish species Mulloidichthys flavolineatus (Lacepède, 1801), Mulloidichthys vanicolensis (Valenciennes, 1831) and Parupeneus forsskali (Fourmanoir & Guézé, 1976) from Egyptian Red Sea, Hurghada region were studied based on otolith readings. The fishing operated mainly by gill and tramml nets with mesh sizes renging from 0.5 to 3 cm. The maximum longevity of the three species was found to be 6, 5 and 5 years for M. flavolineatus, M. vanicolensis and P. forsskali respectively. The age I was the dominant age group forming 50.18% for M. flavolineatus and 46.13% for P. forsskali. While age group II was most frequent in M. vanicolensis (50.67%). The asymptotic length (L∞) and the growth rate (K) were estimated with 38, 33.3 and 31.6 cm as well as with 0.27, 0.37 and 0.32 per year for M. flavolineatus, M. vanicolensis and P. forsskali, respectively.

Population Dynamics and Management of Two-barred Seabream <i>Acanthopagrus bifasciatus</i> in the Red Sea, Egypt

“…Similar trends in length increment have been recorded for all previous studied fish species [e.g. 9,33,19,31,32,46].…”

Age, growth and reproductive biology of a widespread coral reef fish, yellowfin goatfish Mulloidichthys vanicolensis (Valenciennes, 1831)

“…The authors compared their results with those of previous studies and found that the Okinawan fish grew faster and larger than those in other waters (Table 2). This is because, based on the values of the von Bertalanffy growth parameters, the individuals from Okinawa were estimated to have faster initial growth than those from Aquba (Wahbeh, 1992) and Hurgada (Mehanna et al, 2018). The K value…”

“…An age assessment using scales and spawning season estimates using a gonado‐somatic index were reported in the Gulf of Aqaba (Red Sea) (Wahbeh, 1992). In Hurghada (Red Sea), an age analysis with mixed sexes was performed (Mehanna et al ., 2018). In Hawaii, a small sample of age assessments and spawning season estimates was reported (Cole, 2009).…”

“…In Hurghada (Red Sea), an age analysis with mixed sexes was performed (Mehanna et al, 2018). In Hawaii, a small sample of age assessments and spawning season estimates was reported (Cole, 2009).…”

An evaluation for the exploitation level of Egyptian Marine Fisheries

“…The overfishing situation was observed (Table 4) and agreed with all previous studies dealing with tstock assessment of Red Sea fisheries (eg. Mehanna and El-Gammal, 2007;Mehanna, 2005Mehanna, to 2020Tesfamichael and Mehanna, 2012;Osman, 2015;Mohamed, 2016;El-Mahdy, 2017;Mehanna et al, 2016Mehanna et al, , 2017Mehanna et al, , 2018Mehanna et al, , 2019Mohamed et al, 2020). In spite of the large area of marine fisheries in Egypt, these fisheries are not exploited rationally due to the decrease of relative abundance of its fish stocks as a result of different reasons such as pollution (domestic and industrial sewages), over fishing and illegal fishing, habitat degradation, human activities on coastal areas, in addition to climate changes.…”