Butyltins concentration levels and imposex occurrence in snails from the Sicilian coasts (Italy)

Chiavarini, Salvatore; Massanisso, P.; Nicolai, P.; Nobili, Chiara; Morabito, Roberto

doi:10.1016/s0045-6535(02)00601-x

Cited by 87 publications

(47 citation statements)

References 12 publications

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“…Vasconcelos et al, 2010;, and in the Mediterranean Sea, especially in Spain (e.g. Solé et al, 1998;Morcillo & Porte, 1999;Ramón & Amor, 2001) but also in Italy (Chiavarini et al, 2003). In the southern Mediterranean, data on the incidence of imposex and the degree of severity in B. brandaris were gathered during monitoring surveys conducted along the Moroccan (Lemghich & Benajiba, 2007) and Tunisian coasts, specifically in the Bizerte lagoon and in the Gulf of Tunis (Abidli et al, 2009;.…”

Section: Introductionmentioning

confidence: 99%

Reproductive cycle of Bolinus brandaris (Gastropoda: Muricidae) in the Gulf of Gabès (southern Tunisia)

et al. 2013

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The reproductive cycle of the purple dye murex (Bolinus brandaris) from the Gulf of Gabès was studied through gonad histology and calculation of bio-physiological indices (general condition index -K and gonadosomatic index -GSI). The shell length at first sexual maturity (SL 50 ) of B. brandaris was also investigated using a macroscopic maturation scale. The population's sex ratio was statistically skewed (M:F = 1:1.5), with a significant dominance of females over males. Monthly variations in the maturation stages of gonads, K and GSI showed that B. brandaris has an annual reproductive cycle, a long period of gonadal activity and a slight asynchronicity between the sexes. The spawning season comprised the period between April and July, with a clear spawning peak from May to June. The SL 50 was reached at 56.4 mm in females and 54.6 mm in males. Although at present B. brandaris has no commercial value in Tunisia, it is predictable to become a fishery-exploited species in the near future. The present data, particularly the timing and duration of the spawning season and the size of individuals of both sexes at first sexual maturity, provide baseline information to propose the early adoption of fishery management measures, aimed at ensuring sustainable exploitation and long-term preservation of this alternative fishing resource, once commercial exploitation of this species commences.

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Section: Introductionmentioning

confidence: 99%

Reproductive cycle of Bolinus brandaris (Gastropoda: Muricidae) in the Gulf of Gabès (southern Tunisia)

et al. 2013

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“…During spawning, females lay eggs inside oothecas that attach to each other, forming large masses fixed to solid substrata on the sea bed (Ramón & Amor 2002). Like approximately 200 gonochoristic neogastropod species (Shi et al 2005;Sternberg et al 2010), B. brandaris is affected by imposex throughout its distributional range Solé et al 1998;Ramón & Amor 2001;Chiavarini et al 2003;Lemghich & Benajiba 2007;Vasconcelos et al 2010Vasconcelos et al , 2011Abidli et al 2009aAbidli et al , 2011Abidli et al , 2012. In B. brandaris sampled from two sites along the northern Tunisian coast (Bizerta Lagoon and small Gulf of Tunis), the stages of imposex development varied between VDS 1 and VDS 4.3, with all imposex indices being significantly higher in snails from the Bizerta lagoon (Abidli et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Relative growth and reproductive cycle in two populations of Bolinus brandaris (Gastropoda: Muricidae) from northern Tunisia (Bizerta Lagoon and small Gulf of Tunis)

2012

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A study on the relative growth and reproductive cycle of the purple dye murex (Bolinus brandaris) was performed from March 2007 to February 2008 in two populations with contrasting imposex levels (Carthage Byrsa -CB in the small Gulf of Tunis and Menzel Abderrahmane -MA in the Bizerta Lagoon). Both populations presented balanced sex ratios. Comparison of allometric relationships established between linear and ponderal variables (sexes confounded) revealed higher growth in CB than in MA. Mature individuals were found throughout the year, except for September in MA. Spawning periods occurred from March-April to May and from June to August in both sites. Spawning was associated to an increase in seawater temperature. Besides increasing the current knowledge on the biology of B. brandaris from the southern Mediterranean, the information gathered in the present study constitutes a useful baseline for the sustainable management of local wild stocks, namely by prohibiting collection of snails during the spawning season.

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“…This species occurs in intertidal and infralittoral zones between 1 m and 100 m depth (Chiavarini et al, 2003). It inhabits both hard and soft substrates, from rocky shores to sandy-muddy.…”

Section: Introductionmentioning

confidence: 99%

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Marzouk¹,

Chenuil²,

Blel³

et al. 2016

Turk. J. Fish. Aquat. Sci.

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Morphological studies of species with wide distribution range and high commercial value, such as the banded murex Hexaplex trunculus (Linnaeus, 1758), provide information on stock structure, which is the basis for understanding fish population dynamics and enable resource assessment for fisheries management. In the present study, we examined morphological variation among Atlantic and Mediterranean populations of H. trunculus using multivariate analysis. Our results supported the existence of four distinguishable stocks (Atlantic, Alboran, Western Mediterranean and Eastern Mediterranean), correctly classified 71.7% of specimens, and indicated significant degrees of variation in morphometric characteristics between regions. Examination of the contribution of each morphometric variable to the principal components and canonical functions indicated that differences among samples seemed to be associated with the shell and aperture length and width. Samples from the Atlantic Ocean and the Alboran Sea had the largest shell size and the greatest morphometric divergence. This strong morphometric differentiation appears to be associated with local environmental factors (exposure on the rocky shores, food availability and predation) and oceanographic current barriers.

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Butyltins concentration levels and imposex occurrence in snails from the Sicilian coasts (Italy)

Cited by 87 publications

References 12 publications

Reproductive cycle of Bolinus brandaris (Gastropoda: Muricidae) in the Gulf of Gabès (southern Tunisia)

Reproductive cycle of Bolinus brandaris (Gastropoda: Muricidae) in the Gulf of Gabès (southern Tunisia)

Relative growth and reproductive cycle in two populations of Bolinus brandaris (Gastropoda: Muricidae) from northern Tunisia (Bizerta Lagoon and small Gulf of Tunis)

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