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Some population parameters of the comber, Serranus cabrilla, were presented in this study. From January to December 2018, a total of 1250 samples of Serranus cabrilla (11 ≤ TL ≤ 23.9 cm, 14.34 ≤ TW ≤ 157.7 g), have been studied in the Gulf of Annaba (Eastern coasts of Algeria), based on length-frequency data. FiSAT II software was used for differen...
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... January to December 2018, a total of 1250 individuals of S. cabrilla (11 ≤ TL ≤ 23.9 cm; 14 ≤ TW ≤ 157.7 g; 13.45 ≤ EW ≤ 140.2 g) were collected monthly along the coast of the gulf of Annaba which is situated between Cape of Garde in the west and Cape Rosa in the east (36°54'N, 7°46'E) (Fig. 1). The sample is fished by hand lines and longlines via wholesalers and fishmongers in the city of Annaba. Total length (TL) was measured nearest 0.1 cm, total weighed (TW) and eviscerated weight (EW) were recorded on electronic balance at nearest 0.01 g. Sex was not considered in this study given the simultaneous hermaphroditism of this ...
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Citations
... Landings of the comber along the Algerian coast are important since the fifties (Dieuzeide et al., 1959) to the current period. Studies on diet (Rachedi et al., 2018) and growth (Rachedi and Dahel, 2019) have been carried out in the Gulf of Annaba from the eastern Algerian coast, but no studies are available from the central region. The species is heavily exploited by trammel nets and bottom trawl in the Bou Ismail Bay. ...
... cm. It is close to what was found in the Bay of Edremit by Torcu-Koc et al. (2004) and in the Tunisian coast by Bouain (1983), however it is higher than those calculated by Tserpes and Tsimenides (2001) and Ilhan et al. (2010) in the Eastern Mediterranean; Gordo et al. (2016) in the Atlantic and by Rachedi and Dahel (2019) on the east coast of Algeria (Table 1). ...
... The allometry coefficient "b" was 2.963. Similar results have been reported by Ilhan et al. (2010) and Moutopoulos and Stergion (2002) in Aegean Sea, by Gordo et al. (2016) in Portugal and by Rachedi and Dahel (2019) in the Gulf of Annaba. Unlike those obtained by Torcu-Koc et al. (2004) in Edremit Bay and by Gonçalves et al. (1997) in Portugal, which showed negative allometric growth. ...
This study was conducted to determine the growth and mortality parameters of the comber Serranus cabrilla (Linnaeus, 1758) in the central region of the Algerian coast. A total of 1568 specimens were collected from January 2016 to April 2018. Total length (TL) varied between 9.3 and 26.2 cm. The maximum total length recorded in the Mediterranean Sea for the species is 26.2 cm (TL max). The von Bertalanffy growth parameters were estimated using ELEFAN I routine in FiSAT II program (L ∞ = 32.80 cm; K = 0.41 yr-1 ; t 0 =-0.39 yr-1) and those related to the length-weight relationship are as follows: W ∞ = 372.15 g; a = 0.012 and b = 2.96 (r 2 = 0.93). Total mortality (Z) and natural mortality (M) coefficients stood at 2.63 yr-1 and 0.43 yr-1 , respectively. The calculated exploitation rate, E = 0.84, indicated that S. cabrilla population is overexploited.
Groupers (Epinephelidae) are ecologically, commercially, and culturally important carnivorous fishes found throughout the world’s tropical, subtropical, and temperate coastal marine waters. Due to various life history traits (e.g., late maturity, sequential hermaphroditism) and behavior (e.g., sedentary, small home ranges) groupers are susceptible to overfishing, including small-scale and recreational fishing (especially spearfishing), and their populations are declining worldwide. The eastern Mediterranean coast, home to some of the world’s longest continuously occupied urban settlements, hosts important but declining grouper populations. This paper investigates how grouper and comber (fishes in the Serranidae family with similar ecology and osteomorphology, but smaller in size) abundance and catch size changed in the eastern Mediterranean from the Middle to Late Holocene, coinciding with early coastal urbanization, by estimating their relative frequency and reconstructing their size. Size reconstructions have been done from a large sample of bones (Number of Identified Specimens = 1851) recovered from Kinet Höyük in Turkey, and Tell Fadous-Kfarabida and Tell el-Burak in Lebanon, habitation sites along the Levantine coast. Our results imply that groupers in the past reached >100 cm more often than is observed today in areas open to commercial fishing. Furthermore, the apparent lack of large groupers by the Hellenistic Period at Kinet Höyük suggests fishing efforts were intense enough to have either had an appreciable effect on the size structure of local grouper populations or brought about a behavioral change to the fishes of moving to deeper waters.
