alexa On the Fecundity of the Bogue, Boops boops (Linnaeus, 1758), from the Northern Sicilian Coast (Central Mediterranean) | OMICS International
ISSN: 2375-446X
Poultry, Fisheries & Wildlife Sciences
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On the Fecundity of the Bogue, Boops boops (Linnaeus, 1758), from the Northern Sicilian Coast (Central Mediterranean)

Mobilia V1*, Shuaibu A2,Bottari T1 and Rinelli P1

1Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Spianata S Raineri, 86 98122 Messina, Italy

2Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Via L. Vaccara, 61 91026 Mazara del Vallo (TP), Italy

*Corresponding Author:
Valeria Mobilia
Institute for Coastal Marine Environment (IAMC)
National Research Council (CNR)
Spianata S Raineri, 86 98122 Messina,Italy
Tel: +390906015454
Fax: +39090669007
E-mail: [email protected]

Received date: April 06, 2016; Accepted date: April 20, 2016; Published date: April 26, 2016

Citation: Mobilia V, Ragonese S, Bottari T, Rinelli P (2016) On the Fecundity of the Bogue, Boops boops (Linnaeus, 1758), from the Northern Sicilian Coast (Central Mediterranean). Poult Fish Wildl Sci 4: 148. doi:10.4172/2375-446X.1000148

Copyright: © 2016 Mobilia V, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

In this study the fecundity of the bogue (Boops boops) from the northern Sicilian coast (Central Mediterranean) was assessed by volumetric method. During the spawning season 46 fully mature females B. boops were sampled in the Harbour of Milazzo (South Tyrrhenian Sea). The relationships between absolute fecundity, fish weight and length were evaluated.

Keywords

Spawning; Northern sicilian coast; Fecundity

Introduction

The bogue, Boops boops [1], is a teleost belonging to the Sparidae family. This species lives in the eastern Atlantic, from Norway to Angola, and throughout the Mediterranean Sea, including the Black Sea [2]. The bogue is a medium sized demersal and semipelagic species that inhabits all types of sea bottoms until 350 m. Signs of a general decline in bogue standing stock have already been recorded by Matta et al. [3] for the Mediterranean Sea and by Mennes et al. [4] for the western Sahara region.

The assessment of fecundity is a fundamental topic in the study of biology and population dynamics, especially when density-dependent changes (i.e. increased fecundity with decreased density) might be expected in case of high exploitation [5]. In this study the fecundity of the bogue from the northern Sicilian coast (Central Mediterranean) was assessed by volumetric method.

Materials and Methods

During the spawning season 46 fully mature females B. boops were sampled in the Harbour of Milazzo (southern Tyrrhenian Sea, 38°13.569N-15°14.232E). The following individual measurements were recorded: total length (TL; to the nearest lower mm), total (TW; 0.01 g), total without gonads (WW; 0.01 g) weight and gonad weight (GW; 0.01 g). Both absolute (Fa) and relative (Fr) fecundities were estimated according to Murua et al. [6]. The Fa, as number of mature oocytes spawned by a female in a single spawning, was calculated according to the formula Fa=GW * NOg, where NOg denotes the number of mature oocytes per g of ovarian tissue. The Fr was estimated as the number of mature oocytes per gram of WW [7]. The relationships between absolute fecundity (Fa) and total without gonads weight (WW) and total length (TL) were evaluated by three regression models: simple linear, power and exponential; the 2nd and 3rd after nonlinear regression method. The goodness of fit was evaluated on the base of residual analysis, the coefficient of determination (R2) and the corrected Akaike’s information criterion (AICc). The best model was then chosen according to the minimum AICc (Table 1).

Equation R2 AICc
Fa=1268 * TL - 190236 0.84 901.3
Fa=0.001 * TL3.3693 0.86 892.5
Fa=2547 e0.0153TL 0.85 897.3
Fa=728S * WW - 4775 0.85 899.2
Fa=686 S * WW1.0197 0.84 900.5
Fa=28549 e0.00082WW 0.75 927.2

Table 1: Relationship between absolute fecundity (Fa) and total length (TL) and without gonad weight (WW) of Boopsboops. R2: coefficient of determination AICc: Akaike’s information criterion corrected. The selected model is indicated in bold.

Results, Discussion and Conclusion

Absolute fecundity (Fa) ranged from 14,951 (152 mm TL; 32.2 g TW) to 282,680 (287 mm TL; 290 g TW) eggs. The mean value (±standard deviation, sd) for Fa was 94,263 ± 59,731 corresponding to a mean TL of 222 ± 39 mm (152-295 mm), a mean TW of 128 ± 76 g (32.2-295.5 g) and a mean GW of (7 ± 6g) (0.8-24.7g). Based on WW, the relative fecundity (Fr) ranged from 420 to 1153 number of mature eggs/g, with a mean of 779 ± 189. The relationships between Fa and WW and between Fa and TL were best described by simple linear and power equations, respectively (Table 1).

The estimates reported in this study (the first for the western Mediterranean Sea) should be considered as potential annual minimum values for the presence, during the spawning period, of oocytes at different stages of development [8-10]. The results of this study support available information for other Mediterranean stocks (Table 2).

FAO Major Fishing Area GSA min Fa max Fa Size range (TL, mm) References
27 Northeast Atlantic - 11550 357800 140-360 Gordo et al. [8]
37 Mediterranean and Black Sea 10 South Tyrrhenian Sea 14951 282680 152-287 Present study
37 Mediterranean and Black Sea 22 Aegean Sea 33072 66123 199-276 Taylanet al. [1]
37 Mediterranean and Black Sea 26 South Levant 1296 53071 106-208 El-Agamy et al. [10]

Table 2: Minimum and maximum fecundity of Boopsboops in the Mediterranean Sea and Atlantic ocean.

References

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