Gametogenic cycle and size at first maturity of the Patagonic edible snail Buccinanops cochlidium from Argentina

Averbuj, Andrés; Bigatti, Gregório; Penchaszadeh, Pablo E.

doi:10.1007/s00227-010-1488-3

Cited by 26 publications

(26 citation statements)

References 24 publications

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“…Therefore, to ensure sustainable exploitation and long-term preservation of the resource, fishery management measures should be implemented right from the start of its exploitation. As such, planning management measures before the commencement of extensive commercial exploitation provides the possibility of preventing a later collapse of the resource (Averbuj et al, 2010). Viewed in this context, the present data on the reproductive biology of the species, in particular the timing of the spawning season and the size at first sexual maturity, provide information crucial to the proposal of prior and specific management measures.…”

Section: Gharsallahmentioning

confidence: 92%

“…In the present study, the estimation of the size at sexual maturity revealed that B. brandaris males reached maturation at a size slightly smaller than that of females (♂SL 50 = 54.6 ± 0.6 mm; ♀SL 50 = 56.4 ± 0.5 mm), which might be due to differential growth between sexes or to a delay in female maturation. Sexual maturity in males at smaller sizes than those observed in females is a common phenomenon in several gastropod species, including Adelomelon brasiliana (Cledón et al, 2008), Buccinanops cochlidium (Averbuj et al, 2010), H. trunculus (Elhasni et al, 2010;Gharsallah et al., 2010) and Odontocymbiola magellanica (Bigatti et al, 2008). However, in B. brandaris from the Catalan coast, the smallest mature male and female with signs of gametogenic activity measured 29.2 and 26.9 mm SLWS (shell length without siphonal canal), respectively (Ramón & Amor, 2002).…”

Section: Gharsallahmentioning

confidence: 99%

“…With exploitation of new gastropod species showing an increasing trend in international markets (Averbuj et al, 2010), and given the fishing potential of B. brandaris in the Gulf of Gabès, it is of utmost importance to improve the knowledge about this potentially valuable local resource before the development of a commercial fishery. A similar approach, i.e., gathering data on the species biology before or at the early development of new fisheries, was adopted earlier for other gastropod resources all over the world (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…A similar approach, i.e., gathering data on the species biology before or at the early development of new fisheries, was adopted earlier for other gastropod resources all over the world (e.g. Valentinsson et al, 1999;Narvarte, 2006;Averbuj et al, 2010). Similarly, within the plausible scenario of becoming a fishery-exploited species in the Gulf of Gabès in the near future, it is considered prudent to gather baseline information on the biology of B. brandaris, which would allow the proposing specific fishery management measures and promoting the long-term sustainable exploitation of the resource.…”

Section: Introductionmentioning

confidence: 99%

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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: Gharsallahmentioning

confidence: 92%

Section: Gharsallahmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2013

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“…These methods are relatively fast and well adapted for regular management of stock sustainability; however, they are not as reliable as histological observations for a precise description of the course of gametogenesis. Histological analysis had already been used for the Buccinidae by Martel et al (1986) and Averbuj et al (2010). We chose this histological approach for several reasons.…”

Section: Discussionmentioning

confidence: 99%

Growth and reproduction of the common whelkBuccinum undatumin west Cotentin (Channel), France

Heude-Berthelin

Hégron-Macé²,

Legrand

et al. 2011

Aquat. Living Resour.

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-The common whelk Buccinum undatum (Neogastropoda, Buccinidae) is widespread along the north Atlantic coasts of France. In west Cotentin (Normandy), an important local fishery exists that depends exclusively on this marine resource and represents about 90% of French whelk production. Despite successive restrictive measures, fishing yields have decreased since 2000. Shell length frequency distributions of Buccinum undatum caught in west Cotentin were studied in 2005 (N = 2910), in 2007 (N = 2032) and in 2009 (N = 4145) ranging from 7 to 85 mm. In order to preserve this fishery and to characterise the whelk stock at this site, the reproductive biology of this species was studied in relation to age, sex and size, for whelks of commercial size (45 to 61 mm) over the complete annual cycle in 2008. Age was determined by reading the number of operculum striae: animals between 45 and 59 mm had 2 to 4 striae. Four reproductive stages were defined for males and females on the basis of histological analysis. The time course of reproductive events was described according to size and sex: the highest percentages of ripe stages were found in October for both sexes. Spawning events occurred between October and December. The shell length that corresponded to 50% of animals having mature gonads (49 mm and 52 mm for males and females, respectively, corresponding to 3 and 4 years old animals) exceeded the minimal landing size (45 mm). Fifty percent maturity was reached for males in their third year and for females in their fourth year. Reproductive investment was evaluated by quantitative analysis of the gonadal thickness or surface and was found to be proportional to shell size. We found that less than 20% of females under 49 mm in length were sexually mature and that these produced only a few eggs. This information, collected in a major fishing area, should assist fishery management decisions.

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Comparative study of the female gametogenic cycle in three populations of Buccinanops globulosus (Caenogastropoda: Nassariidae) from Patagonia

et al. 2014

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The populations of Buccinanops globulosus from three different sites of northern Patagonia were compared in the female reproductive cycle over a 2-year study period (September 2006-August 2008. These populations differed in demographic and life-history traits (sex ratios, size frequency distributions, growth rates and fecundity). Also, two of these populations show imposexaffected females (Bahía San Antonio, BSA and Bahía Nueva, BN), whereas the other (Playa Villarino, PV) is imposex-free and constitutes a commercial fishery ground for this species. The gametogenic activity of this species has not been studied earlier. Females showed the same gonadal stages in the three populations; however, there were differences in the female size at which each gonadal stage occurred. Monthly variation in gonadal stages and in oocyte size indicated that females of B. globulosus showed a seasonal gametogenic pattern without the occurrence of a resting period. Evacuation of mature oocytes (up to 252.5 lm) occurred mainly from September to December (austral spring) in BSA and PV and from December to March (austral summer) in BN. Gonad maturation and the presence of females carrying egg capsules in the field coincided with changes in water surface temperature and a longer day length. Our results indicate that the occurrence of imposex in the populations studied apparently does not affect the gametogenic activity in females. This study provides further insights into the reproductive biology of B. globulosus. The identification of population variation in reproductive traits should lead to more effective management of the species.

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Gametogenic cycle and size at first maturity of the Patagonic edible snail Buccinanops cochlidium from Argentina

Cited by 26 publications

References 24 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)

Growth and reproduction of the common whelkBuccinum undatumin west Cotentin (Channel), France

Comparative study of the female gametogenic cycle in three populations of Buccinanops globulosus (Caenogastropoda: Nassariidae) from Patagonia

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