Growth Parameters and Population Structure of Aristeus Antennatus (Decapoda, Penaeidae) in the South Tyrrhenian Sea (Southern Coast of Italy)

Abstract

The blue and red shrimp Aristeus antennatus (Risso, 1816) is one of the most important fishery resources in the Mediterranean Sea. Monthly samplings of blue and red shrimp from June 2006 to May 2007 were landed by the trawl fleet in two northwest Sicilian fishing harbours (San Vito Lo Capo and Terrasini). The carapace length (CL) frequency distribution of females ranged between 15.00 and 59.00 mm, whereas male CLs ranged between 17.00 and 34.00 mm. The estimated parameters of the Von Bertalanffy growth function (VBGF) for San Vito lo Capo females and males were: CL∞ = 65 mm, K = 0.58 y −1 and CL∞ = 41 mm, K = 0.71 y −1 , respectively; while for Terrasini females and males these were: CL∞ = 69 mm, K = 0.65 y −1 and CL∞ = 37 mm, K = 0.8 y −1 , respectively. In this study, we update the information on stock structure and growth parameters of the blue and red shrimp in two northwest Sicilian fishing grounds and compare these results with other data recorded in the Mediterranean Basin. RIASSUNTOIl gambero viola Aristeus antennatus (Risso, 1816) è una delle risorse da pesca più importanti nel Mar Mediterraneo. L'indagine è stata effettuata in due marinerie della sicilia nord-occidentale (San Vito Lo Capo e Terrasini) dove mensilmente e in un periodo compreso tra giugno 2006 e maggio 2007, venivano acquistati allo sbarco campioni di gambero viola. La distribuzione di frequenza di lunghezza carapace (LC) delle femmine era compresa tra 15,00 e 59,00 mm, mentre nei maschi tra 17,00 e 34,00 mm. I parametri di crescita stimati con la funzione di Von Bertalanffy (VBGF) per le femmine e i maschi di San Vito Lo Capo sono risultati rispettivamente di: CL∞ = 65 mm, K = 0,58 y −1 e CL∞ = 41 mm, K = 0,71 y −1 , mentre per le femmine ed i maschi di Terrasini sono stati: CL∞ = 69 mm, K = 0,65 y −1 e CL∞ = 37 mm, K = 0,8 y −1 . In questo studio vengono 4 )

Genetic Demography of the Blue and Red Shrimp, Aristeus antennatus: A Female-Based Case Study Integrating Multilocus Genotyping and Morphometric Data

“…Related to the MPA analysis (Table 2), the number of estimated age groups and the size of each group was quite similar to data reported by other studies conducted close to our area of study (Table 3), i.e., Gulf of Alicante, Gulf of Vera and Balearic Islands, [34,53,54]. However, our data do not differ substantially from other studies conducted in more remote areas either, i.e., Ligurian, Tyrrhenian, and Ionian Seas [23,[30][31][32]. Indeed, the largest size-age ratio differences between groups were observed in older age groups, approximately from 4+ onwards, in which it becomes difficult to distinguish the cohorts due to age-related reduction of growth rate [34].…”

Population parameters and the relationships between environmental factors and abundance of the Acetes americanus shrimp (Dendrobranchiata: Sergestidae) near a coastal upwelling region of Brazil

“…Previous studies have shown that an understanding of the parameters of growth and of the population structure of decapod crustaceans is fundamental for a better understanding of the biology and life cycle of these species (FONSECA; D' INCAO, 2003;KEUNECKE et al, 2007;LOPES-LEITZKE et al, 2009;ARCULEO et al, 2011). Thus, the goal of this study is to discern the patterns of the population dynamics of Acetes americanus -particularly the sex ratio, growth of individual specimens, longevity, and recruitment -in terms of the abundance of species and the influence of environmental factors in the region of Macaé, RJ.…”

Sex ratio, growth and recruitment of the pelagic shrimp Acetes americanus on the southeastern coast of Brazil

“…Studies of the individual growth of crustaceans have been reported in the literature estimating age in relation to the size (Kirkwood and Sommers, 1984;Die, 1992;D'Incao and Fonseca, 1999;Pérez-Castañeda and Defeo, 2005). Previous studies (Fonseca and D'Incao, 2003;Dumont and D'Incao, 2004;Keunecke et al, 2007;Lopes-Leitzke et al, 2009;Arculeo et al, 2011) have demonstrated that understanding patterns in the growth and structure of crustacean populations is fundamental for deriving the life history necessary for the effective and sustainable management of these species. However, little information is available regarding the population parameters of Acetes, with the exception of studies by Zafar and Amin (2002), Oh and Jeong (2003) and Amin et al (2008Amin et al ( , 2009aAmin et al ( , 2009b.…”