Linking fisheries management and conservation in bioengineering species: the case of South American mussels (Mytilidae)

Carranza, Alvar; Defeo, Omar; Beck, M. W.; Castilla, Juan Carlos

doi:10.1007/s11160-009-9108-3

Cited by 41 publications

(29 citation statements)

References 65 publications

(57 reference statements)

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“…Thus, after many decades of intensive fisheries extraction, exacerbated by coastal degradation and globalization of markets, many shellfish are near the point of functional extinction (Carranza et al . ; Beck et al . ).…”

Section: Introductionmentioning

confidence: 99%

Co‐management in Latin American small‐scale shellfisheries: assessment from long‐term case studies

et al. 2014

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Co‐management (Co‐M), defined as the sharing of management tasks and responsibilities between governments and local users, is emerging as a powerful institutional arrangement to redress fisheries paradigm failures, yet long‐term assessments of its performance are lacking. A comparative analysis of five small‐scale Latin American shellfisheries was conducted to identify factors suggesting success and failure. In Chile, Uruguay and Mexico Co‐M produced positive effects, including stabilization of landings at low levels, increase in abundance, CPUE, unit prices and revenues per unit of effort, and reduced interannual variability in several fishery indicators, particularly in landings. Co‐M was successful because it was mainly bottom‐up implemented and accompanied by‐catch shares (spatial property rights and community quotas). By contrast, Co‐M implementation was unable to prevent the collapse of the Galapagos sea cucumber fishery, as reflected by a decrease in abundance and CPUE. Negative effects were also observed in the Galapagos spiny lobster fishery during Co‐M implementation. However, recovery was observed in recent years, reflected in a stabilization of fishing effort and the highest CPUE and economic revenues observed since the beginning of the Co‐M implementation phase. The combined effects of market forces, climate variability and a moratorium on fishing effort were critical in fishery recovery. We conclude that Co‐M is not a blueprint that can be applied to all shellfisheries to enhance their governability. These social–ecological systems need to be managed by jointly addressing problems related to the resources, their marine environment and the people targeting them, accounting for their socioeconomic and cultural contexts.

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Section: Introductionmentioning

confidence: 99%

Co‐management in Latin American small‐scale shellfisheries: assessment from long‐term case studies

et al. 2014

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“…Jennings & Kaiser 1998). Bivalve aquaculture can mitigate the pressure on these natural populations (Carranza et al 2009, Dolmer et al 2012), but may also represent a form of restoration of ecosystem services previously provided by overfished wild populations. Although shading from farming structures at the local scale can reduce light availability and consequently primary productivity (Skinner et al 2014, M. Froján et al unpubl.…”

Section: Ecosystem Services: Attributing Respired Co 2 To Tissue or Smentioning

confidence: 99%

An integrated ecosystem approach for assessing the potential role of cultivated bivalve shells as part of the carbon trading system

Filgueira

Byron²,

Comeau

et al. 2015

Mar. Ecol. Prog. Ser.

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The role of bivalve mariculture in the CO 2 cycle has been commonly evaluated as the balance between respiration, shell calcium carbonate sequestration and CO 2 release during biogenic calcification. However, this approach neglects the ecosystem implications of cultivating bivalves at high densities, e.g. the impact on phytoplankton dynamics and benthic−pelagic coupling, which can significantly contribute to the CO 2 cycle. Therefore, an ecosystem approach that accounts for the trophic interactions of bivalve aquaculture, including dissolved and particulate organic and inorganic carbon cycling, is needed to provide a rigorous assessment of the role of bivalve mariculture in the CO 2 cycle. On the other hand, the discussion about the inclusion of shells of cultured bivalves into the carbon trading system should be framed within the context of ecosystem goods and services. Humans culture bivalves with the aim of producing food, not sequestering CO 2 in their shells, therefore the main ecosystem good provided by bivalve aquaculture is meat production, and shells should be considered as by-products of this human activity. This reasoning provides justification for dividing up respired CO 2 between meat and shell when constructing a specific bivalve CO 2 budget for potential use of bivalve shells in the carbon trading system. Thus, an integrated ecosystem approach, as well as an understanding of the ecosystems goods and services of bivalve aquaculture, are 2 essential requisites for providing a reliable assessment of the role of bivalve shells in the CO 2 cycle.

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“…Studies supply information about the period of gamete release, sex ratio, and reproductive potential, subsidizing actions to maintain natural stocks and the preservation of the species (Araújo, 2001). According to Carranza et al (2009) studies report declining stocks of bivalves across Brazilian's Northeast coast, mainly due to overexploitation and the loss of habitat of species.…”

Section: Introductionmentioning

confidence: 99%

“…The Mytilidae family (Mollusca: Bivalvia) includes various species with socioeconomic interest, being a source of income and livelihood for coastal communities (Nishida and Leonel, 1995;Carranza et al, 2009), which contributes to their food security, because they are sources of proteins as well as micronutrients, such as vitamin A, Iron, and Zinc (Santos et al, 2014). Furthermore, mussels may sometimes be the only affordable source of protein available.…”

Section: Introductionmentioning

confidence: 99%

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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Linking fisheries management and conservation in bioengineering species: the case of South American mussels (Mytilidae)

Cited by 41 publications

References 65 publications

Co‐management in Latin American small‐scale shellfisheries: assessment from long‐term case studies

Co‐management in Latin American small‐scale shellfisheries: assessment from long‐term case studies

An integrated ecosystem approach for assessing the potential role of cultivated bivalve shells as part of the carbon trading system

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

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