Population Dynamics of The Rabbitfish Siganus rivulatus from the Egyptian Sector of the Red Sea

Mehanna, Sahar F.; Abdallah, Mohammed Degail

doi:10.4197/mar.13-1.9

Cited by 12 publications

(21 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Like other tropical and subtropical seas, the Red Sea is characterized by rich and diversified fauna and flora (Morcos, 1970;Sheikh-Eldin, 1988 andGhisotti, 1995). There are several fishing grounds along the Egyptian sector of the Red Sea with a mean annual catch of about 30 thousand tons (Mehanna, 2005;Mehanna and El-Gammal, 2007).…”

Section: Introductionmentioning

confidence: 99%

Studies on age, growth, and mortality rates for management of the redspot emperor, Lethrinus lentjan (Lacepède, 1802) in the Egyptian sector of Red Sea

Zaahkouk

Khalaf-Allah

Mehanna

et al. 2017

Egypt. J. of Aquatic Biolo. and Fish.

View full text Add to dashboard Cite

_______________ Keywords:Lethrinus lentjan Age Growth mortality rate Red Sea Egypt Age, growth and mortality are very important parameters for rational exploitation and management of the fish population. Age, growth, mortality and exploitation rates were studied to assess the current status of the redspot emperor Lethrinus lentjan stock in the Egyptian sector of Red Sea. The study was based on a total of 943 specimens that collected during 2014 and 2015 with total length range of 11.5 to 50.7 cm. Results showed that, the maximum life span of L. lentjan in the Egyptian Red Sea was 6 years and age group one is the most frequent one forming up to 54% of the total catch. L. lentjan attains its highest growth in length at the end of the first year of life (24.45 cm) after which the annual increment in length decreases gradually with the further increase in age. The b-value of length-weight relationship was estimated at 3.03 indicating a tendency towards isometric growth. The composite coefficient "k c " and the relative condition factor "K n " were fluctuated according to different fish length groups and months. The length at first capture was L c = 20.11 cm with corresponding age T c = 0.58 year. The total mortality of L. lentjan (Z= 1.52/yr), natural mortality (M = 0.35/yr) and fishing mortality (F = 1.17/yr) were lead to an exploitation ratio of E = 0.77. The high values of both F and E are reflecting the high level of exploitation of this species in the Egyptian Red Sea waters.

show abstract

Section: Introductionmentioning

confidence: 99%

Studies on age, growth, and mortality rates for management of the redspot emperor, Lethrinus lentjan (Lacepède, 1802) in the Egyptian sector of Red Sea

Zaahkouk

Khalaf-Allah

Mehanna

et al. 2017

Egypt. J. of Aquatic Biolo. and Fish.

View full text Add to dashboard Cite

show abstract

“…() showed marbled spinefoot S. rivulatus ranging in age from 1 to 6 years, with dusky spinefoot Siganus luridus (Rüppell 1829), ranging in age from 1 to 7 years. A maximum age of 5 years was reported for S. rivulatus from the Egyptian sector of the Red Sea (Mehanna & Abdallah, ). None of these authors, including Bariche (), have reported age at sexual maturity for these species.…”

Section: Discussionmentioning

confidence: 99%

“…: +1 512 638 5997; email: klrhodes_grouper@yahoo.com throughout the world because of their general life histories, in particular, high fecundity, frequent spawning, fast growth and maturation and lower trophic requirements. While rabbitfish life histories are characteristic of fishes generally resilient to overfishing, they have nonetheless been overexploited in some areas (Mehanna & Abdallah, 2002;Grandcourt et al, 2007;Soliman et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Goldspotted spinefootSiganus punctatus(Siganidae) age‐based reproductive life history and fisheries vulnerability

Rhodes¹,

Hernandez-Ortiz

Ioanis³

et al. 2017

Journal of Fish Biology

View full text Add to dashboard Cite

Between February 2015 and 2016, samples of the Indo-Pacific goldspotted spinefoot Siganus punctatus were taken from local fish markets, feeding sites and nursery grounds on the main island of Pohnpei, Micronesia, to ascertain sexual pattern, reproductive seasonality, age, growth and mortality. Microscopic examinations of gonads identified two seasonal peaks in reproduction: February to May and September to December, with evidence of some spawning activity in most months. Ripe females were observed 4 days on either side of the new moon. Females first matured at c. 180 mm fork length (L ) and 1 year of age, which coincides with their entry into the fishery. Ninety five per cent of individuals were less than 3 years and the oldest fish were 8 years. To examine the species vulnerability to fishing, a tag-and-recapture study was conducted over 4 months in 2015 in a locally managed marine area and at an unprotected site. Findings suggest high residency and high vulnerability to fishing at shallow-water feeding sites and restricted migration overall. The placement of marine protected areas within critical habitat appears to be an effective conservation strategy for this species, particularly when combined with gear and seasonal market restrictions during vulnerable life-history phases.

show abstract

“…They are of economic importance for the fishery production in several countries in the Indo Pacific and Middle East regions. Siganids occupy a wide range of habitats in the coastal waters of the Gulf of Suez Red Sea (El-Gammal 1988;El-Ganainy 2002;and Mehanna & Abdallah 2002). This species inhabits shallow sandy areas, lagoons, around rocks and coral reefs, mainly found in shallow water, usually less than 15 meters (Tharwat & Al-Owafeir 2003;Gabr and Mal 2016).…”

mentioning

confidence: 99%

The influence of trammel net fishing on the Rabbit fish (Siganus rivulatus) stocks in Suez Gulf, Red Sea, Egypt.

Saber¹,

Gewida²

2020

Egypt. J. of Aquatic Biolo. and Fish.

View full text Add to dashboard Cite

Population Dynamics of The Rabbitfish Siganus rivulatus from the Egyptian Sector of the Red Sea

Cited by 12 publications

References 0 publications

Studies on age, growth, and mortality rates for management of the redspot emperor, Lethrinus lentjan (Lacepède, 1802) in the Egyptian sector of Red Sea

Studies on age, growth, and mortality rates for management of the redspot emperor, Lethrinus lentjan (Lacepède, 1802) in the Egyptian sector of Red Sea

Goldspotted spinefootSiganus punctatus(Siganidae) age‐based reproductive life history and fisheries vulnerability

The influence of trammel net fishing on the Rabbit fish (Siganus rivulatus) stocks in Suez Gulf, Red Sea, Egypt.

Contact Info

Product

Resources

About