Reproductive cycle of Tagelus plebeius (Mollusca: Bivalvia) in the estuary of the Cachoeira River, Ilhéus, Bahia, Brazil

Ceuta, L O; Boehs, Guisla

doi:10.1590/s1519-69842012000300020

Cited by 13 publications

(8 citation statements)

References 14 publications

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“…Conversely, when the ripe stage occurred, the mean oocyte area showed high values due to the presence of mature gametes. The equal sex ratio observed in this study is in agreement with observations by Clédon et al (2004) and Ceuta and Boehs (2012) in other occurrence areas.…”

Section: Discussionsupporting

confidence: 94%

“…Once the individuals bury themselves deeply in the sediment (50 cm), a great effort is involved in sampling, frequently precluding population studies. To achieve the minimum number of individuals necessary for analysis, we chose to apply a standard procedure used to sample razor clams (Gutiérrez and Iribarne 2003;Vásquez et al 2006;Abrahão et al 2010;Ceuta and Boehs 2012;Farias and Rocha-Barreira 2012) instead of using the most common methods used in macrofaunal studies (e.g., transects and/or random stratification). This approach consisted of (1) identifying the area of greatest abundance of T. plebeius (the upper level of the intertidal region of Camaroeiro Beach); (2) establishing a sector in this area (a 450 m 2 sector-30 m long and 15 m wide); and (3) excavating the sand in all locations where T. plebeius marks could be observed inside the sector.…”

Section: Sampling Proceduresmentioning

confidence: 99%

“…Despite its wide distribution and economic importance, there is a great lack of knowledge about the population biology of T. plebeius. To date, the population studies focusing on this species have been restricted to those conducted by Holland and Dean (1977a, b) in the USA, by Clédon et al (2004) in Argentina, and by Viégas (1982), Abrahão and Amaral (1999), Abrahão et al (2010), and Ceuta and Boehs (2012) in Brazil.…”

Section: Introductionmentioning

confidence: 99%

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Growth, mortality, and reproduction of Tagelus plebeius (Bivalvia: Solecurtidae) in Southeast Brazil

et al. 2014

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Tagelus plebeius (Lightfoot, 1786) is a stout razor clam that is economically exploited in several countries, including several local fisheries along the Brazilian coast. Despite its wide distribution and economic importance, there are few studies that have examined the population biology of this species. This study aimed to improve the current knowledge about the biology of T. plebeius by investigating its growth and mortality on a subtropical sandy beach in Southeast Brazil over a 1-year period. In addition, the reproduction of T. plebeius was analyzed through qualitative and quantitative histological analyses during the last 7 months of the study. The parameters of the von Bertalanffy growth function were estimated to be L ? = 74.14 mm, K = 0.52 year -1 , C = 0.47, and WP = 0.94. The instantaneous mortality rate (Z) was 2.16 year -1 , and the life span was 2.58 years. We confirmed variations (H = 651.35; P \ 0.05) in the shell length over the months of the study, and the recruitment was higher-but still low-in summer. Four cohorts were observed in the distribution of shell length frequencies. The sex ratio of the population was 1:1 during the study period, and a synchronism in gonadal development and spawning was found between males and females. The high mortality (Z) and low recruitment rates can be interpreted as reflecting that the population of T. plebeius is under a low restoration process and could be an indication that this species has an endangered status in the study area.

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Section: Discussionsupporting

confidence: 94%

Section: Sampling Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Growth, mortality, and reproduction of Tagelus plebeius (Bivalvia: Solecurtidae) in Southeast Brazil

et al. 2014

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“…According to Boehs (2000), bivalves of tropical regions, where the seasons are well defined, tend to present continuous reproduction, with peaks of gamete release. This was observed for M. guyanensis in Brazil's North (Gomes et al, 2009) and Northeast (Luz, 2009) regions, as well as for other bivalve species, such as Anomalocardia brasiliana (Lavander et al, 2011), Crassostrea rhizophorae (Lenz and Boehs, 2011), Tagelus plebeius (Ceuta and Boehs, 2012), Perna viridis (Acosta et al, 2012), and Iphigenia brasiliana (Silva et al, 2012).…”

Section: Discussionmentioning

confidence: 81%

Reproductive cycle of Mytella guyanensis (Lamarck, 1819) in a Marine Reserve (RESEX Bay of Iguape), Bahia, Brazil

et al. 2017

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Mytella guyanensis, consumed and commercialized in coastal regions of Brazil, is one of several bivalve species of socioeconomic interest for coastal communities. Besides serving as a source of income and subsistence for these communities, it also contributes to their food security as it is a source of proteins and micronutrients. Thus, the reproductive cycle of this species was studied aiming to contribute to food security and its preservation. Samples were collected monthly, between March 2014 and March 2015, in a natural stock (12°38'50"S; 38°51'43"W) in a Marine Reserve (RESEX Bay of Iguape) (community Engenho da Ponte), Bahia, Brazil. Mytella guyanensis is collected by women on site, where the artisanal fishing of this resource is performed without following any specific handling procedure. Also, empirical evidence indicates overexploitation. The specimens collected were measured along the anterior-posterior axis (length), and after macroscopic analysis they were fixed in Davidson solution, processed by routine histology techniques and stained with Harris haematoxylin and eosin (H&E). The macroscopic analysis showed sexual dimorphism, with the male and female gonads presenting a milky-white and orange colour, respectively. A 1:1 sex ratio (M: F) was observed and reproduction of the species was continuous all year round. March, April, July and August were the months with highest values of gamete elimination. We suggest that a M. guyanensis management plan should restrict capture during these months, in order to sustainably regulate exploitation of this food resource in this reserve.Keywords: bivalve, mytilidae, gametogenesis, environmental protection area. Ciclo reprodutivo de Mytella guyanensis (Lamarck, 1819) na Reserva Extrativista Marinha Baía do Iguape, Bahia, Brasil ResumoMytella guyanensis, consumida e comercializada em regiões litorâneas do Brasil, é uma das diversas espécies de bivalves de interesse socioeconômico para comunidades litorâneas. Além de servir como fonte de renda e subsistência para essas comunidades, esta contribui para a sua segurança alimentar, por ser fonte de proteínas e micronutrientes. Assim, o ciclo reprodutivo desta espécie foi estudado visando contribuir com a segurança alimentar e a preservação da mesma. As amostragens foram realizadas mensalmente, entre março de 2014 e março de 2015 em um estoque natural (12°38'50"S e 38°51'43"W) na Reserva Extrativista Marinha Baía do Iguape (comunidade Engenho da Ponte), Bahia. Mytella guyanensis é coletada no local por mulheres, onde a pesca artesanal desse recurso é realizada sem seguir nenhum procedimento específico de manejo e evidência empírica indica sobrexplotação. Os espécimes coletados foram medidos ao longo do eixo ântero-posterior (comprimento) e após a análise macroscópica, foram fixados em solução de Davidson, processados por técnicas rotineiras de histologia e coradas em hematoxilina de Harris e eosina (HE). A análise macroscópica evidenciou dimorfismo sexual, com as gônadas de machos e fêmeas apresentando coloração ...

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“…It is known that water temperature influences the process of maturation and release of gametes, as observed in native oysters of the genus Crassostrea (Absher, 1989;Christo and Absher, 2006) and Pteria hirundo (Salvador et al, 2011); Anomalocardia brasiliana cockle (Boehs et al, 2008;Luz and Boehs, 2011); Nodipecten nodosus scallop (Albuquerque and Ferreira, 2006;Rupp and Parsons, 2004); Perna perna mussel (Ferreira and Magalhães, 2004); Tagelus plebeius (Ceuta and Boehs, 2012) and Crassostrea gigas cultivated oyster (Manzoni and Schmitt, 1997).…”

Section: Discussionmentioning

confidence: 99%

Reproductive periods of Lucina pectinata (BIVALVE; LUCINIDAE) in the Paranaguá Estuarine Complex, Paraná - Brazil

et al. 2016

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The objectives of the present study is to describe the size for exploitation and gonadal maturation of L. pectinata in Peças Island in Paraná coast. Twenty two individuals were sampled every month, from an intertidal flat of the Peças River, Municipality of Guaraqueçaba, during two periods -summer/autumn and winter of the 2009. Environmental parameter data was obtained at the same time of the biological sampling: temperature, salinity and seawater transparency at the Peças River mouth. The animals' height, length, width, gross weight, wet weight of meat and dry weight of meat were measured at the lab. The gonad development stages (GDS), condition index (CI) and yield index (Y) were calculated. Sex identification was conducted by direct observation of the gonads and gametes under an optic microscope. Individuals were classified as males (M), females (F) or undetermined (U). The medium height observed was of 49.62 ± 6.84 mm. Period of more expressive gonad repletion were observed in summer when water temperature was higher. Results of GDS in both periods showed a predominance of partially filled gonad stages. This may be related with the fact that L. pectinata has intense gametogenesis activity, that is, the organisms do not have a resting interval, but go back to gonad restructuring rapidly after releasing the gametes. The continuity of the reproductive cycle of the specimens found in both studied periods could demonstrate a possible continuous reproduction of the species and a size for exploitation above 40.00 mm of height.Keywords: reproduction, clams, Peças Island, condition index. Período reprodutivo de Lucina pectinata (BIVLAVE; LUCINIDAE) no Complexo Estuarino de Paranaguá, PR -BrasilResumo O presente estudo tem como objetivo descrever o tamanho de exploração e a maturação gonadal de L. pectinata na Ilha das Peças no litoral do Paraná. Vinte e dois indivíduos foram amostrados mensalmente na região entre-marés no Rio das Peças, Município de Guaraqueçaba, durante 2 períodos -verão/outono e inverno de 2009. Paralelamente às amostragens, foram obtidos dados dos parâmetros ambientais: temperatura, salinidade e transparência da água do mar na foz do Rio das Peças. A altura, comprimento, largura, peso bruto, peso úmido da carne e peso seco da carne dos animais foram medidos no laboratório. Foram calculados os estágios de desenvolvimento gonadal (EDG), índices de condição (IC) e de rendimento (R). A Identificação do sexo foi realizada por observação direta das gônadas e gametas sob microscópio óptico. Os indivíduos foram classificados como: machos (M), fêmeas (F) ou indeterminados (I). A altura média observada foi de 49,62 ± 6,84 mm. O período de maior repleção gonadal foi observado no verão, quando a temperatura da água foi mais elevada. Resultados dos EDG em ambos os períodos mostrou um predomínio de gônadas parcialmente cheias. Isso pode estar relacionado com o fato de que L. pectinata tem atividade gametogênese intensa, ou seja, os organismos não têm um intervalo de repouso, mas voltam a reestruturação ...

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Reproductive cycle of Tagelus plebeius (Mollusca: Bivalvia) in the estuary of the Cachoeira River, Ilhéus, Bahia, Brazil

Cited by 13 publications

References 14 publications

Growth, mortality, and reproduction of Tagelus plebeius (Bivalvia: Solecurtidae) in Southeast Brazil

Growth, mortality, and reproduction of Tagelus plebeius (Bivalvia: Solecurtidae) in Southeast Brazil

Reproductive cycle of Mytella guyanensis (Lamarck, 1819) in a Marine Reserve (RESEX Bay of Iguape), Bahia, Brazil

Reproductive periods of Lucina pectinata (BIVALVE; LUCINIDAE) in the Paranaguá Estuarine Complex, Paraná - Brazil

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