Biology of the common cockle Cerastoderma edule (Linnaeus, 1758) in Ria de Aveiro (NW Portugal): Implications for fisheries management

Maia, Francisco; Barroso, Carlos M.; Gaspar, Miguel B.

doi:10.1016/j.seares.2021.102024

Cited by 18 publications

(37 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, there were also shellfishers reporting the capture of individuals below 25 mm. The average size of this capture may also indicate that the cockle may be harvested before the first year of age [ 18 ]. In an estuarine area of Portugal, visible disturbances of the population structure of C. edule have been reported due to human overharvesting [ 58 ].…”

Section: Resultsmentioning

confidence: 99%

“…The cockle harvest throughout the year showed how easy it is to catch this bivalve, with solid commercial demand and little investment in equipment and workforce [ 18 ]. The main harvest period lasted from September through March (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The capture of this bivalve in the Aveiro coastal lagoon can exceed 1000 tons per year [ 17 ]. Emphasizing that even with sales higher than those declared at fishing auction, cockle capture represented about 92% of landings (about 3,500 tons of C. edule ) and about 85% of total revenue in 2018 at Ria de Aveiro (about 4 million Euros) [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…There is only one recent cockle study that used the fishers’ LEK to share the changes in cockle fishing over the last few decades, as well as the impact of the COVID-19 pandemic on this artisanal fishery [ 19 ]. It is also observed that there is no specific management plan for the cockle [ 18 ], despite the sociobiological role and economic interest of the species in the region [ 20 , 21 ]. Establishing an efficient coastal management program in the Aveiro region faces several obstacles, mainly due to the scarcity of biological data on the cockle [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is also observed that there is no specific management plan for the cockle [ 18 ], despite the sociobiological role and economic interest of the species in the region [ 20 , 21 ]. Establishing an efficient coastal management program in the Aveiro region faces several obstacles, mainly due to the scarcity of biological data on the cockle [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A case study of local ecological knowledge of shellfishers about edible cockle (Cerastoderma edule) in the Ria de Aveiro lagoon, Western Iberia

Braga

Azeiteiro

Magalhães

2022

J Ethnobiology Ethnomedicine

View full text Add to dashboard Cite

Background The cockle is available to numerous fishing villages in Europe, especially Portugal. In the Ria de Aveiro, there is a lack of a fisheries management program and the need for new ecological studies on cockle biology, ecology, and conservation. We shared local ecological knowledge (LEK) highlights about the cockle—Cerastoderma edule (Linnaeus 1758) in the Ria de Aveiro in favor of adaptive management of this bioresource. Methods Semi-structured interviews with sixty shellfishers in this coastal lagoon were carried out during April and May 2021. LEK data on the biology and ecology of the cockle were analyzed using an ethical-emic approach and the model of integration of different individual skills. These informal data were compared with previously published data for the species, the Fish Base, and GBIF databases. Results and discussion The average minimum size of the cockle for capture was 23.4 mm, and the average capture per tide was 137.12 kg. The areas with the highest productivity and the most shellfish were RIAV1 and RIAV2. Cockles inhabit areas of sand and mud at an average depth of 2.71 cm. Feeds are mainly small particles, plankton, mud, and algae. The main predators were crabs, European plaice, and bird species. Cockles spawn primarily in late spring and summer. As of 2010, there was a slight decrease in cockle stocks in the Ria de Aveiro due to overfishing, increased rainfall, and changes in the sediment. Considering and analyzing this knowledge is essential for a better understanding of the environmental context the cockles thrive in the view of users of the natural resource. Conclusion Informal data shared by shellfishers in the Ria de Aveiro were typical of filter-feeding bivalves. LEK may assist in planning future management plans for cockles, and unrefuted data may serve as untestable hypotheses. Ethnobiological studies in the Ria de Aveiro lagoon with other species may improve the management of this system since multiple fisheries are carried out in this coastal area.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A case study of local ecological knowledge of shellfishers about edible cockle (Cerastoderma edule) in the Ria de Aveiro lagoon, Western Iberia

Braga

Azeiteiro

Magalhães

2022

J Ethnobiology Ethnomedicine

View full text Add to dashboard Cite

show abstract

Evolutionary and ecological insights from vital staining of bivalve oocytes: A Red Queen at the sweepstakes?

et al. 2022

View full text Add to dashboard Cite

To determine the proportion of inviable oocytes that are spawned along with normal oocytes in marine bivalves, we turned to a time-honored technique not previously used on invertebrate oocytes: the neutral red vital stain. Despite the difficulty in obtaining induced spawns from field-collected Cerastoderma edule (L), the results and insights from this simple procedure to answer a simple question were unexpected and far-reaching. Mean proportions of inviable oocytes in the spawns of cockle C. edule ranged from 35% to 85%, with the vast majority represented by atresic (autolyzing) oocytes. These levels are in agreement with previous quantitative histological observations of prespawning atresia in both C. edule and the Manila clam Tapes philippinarum. Such elevated prefertilization inviability mirrors the known high level of postfertilization inviability in bivalves. Together, these high levels of inviability may account for much of the early mortality in the type III survivorship curves typical of marine bivalves. The combination of high fecundity and high oocyte inviability suggests a Red Queen-type reproductive dilemma in these species. In addition, the great degree of interindividual variation observed in oocyte inviability suggests that cockles, and perhaps other intertidal bivalves, present a Sweepstakes Reproductive Strategy, in which highly variable individual fecundity confronts a highly variable environment. The neutral red technique promises to be a useful tool for investigating prespawning inviability in other marine taxa, as well as for aquaculture, conservation, restocking, ecophysiology, and environmental monitoring.

show abstract

The bay barnacle Amphibalanus improvisus (Darwin, 1854) in the Pleistocene of Europe? A review of Pleistocene Balanidae of northern Central Europe

Meng,

Strahl,

Börner

et al. 2024

J Quaternary Science

View full text Add to dashboard Cite

The bay barnacle Amphibalanus improvisus (Darwin, 1854) has been found in Northern Germany in brackish marine sediments of the Holsteinian interglacial. Whereas the cause of the contemporary distribution of this species is anthropogenic and there is evidence that it has resulted mainly from shipping, the fossil findings demonstrate that A. improvisus had also already reached Europe naturally during the Pleistocene in Europe, probably via the Gulf Stream system of the Atlantic. Today, A. improvisus is considered one of the most successful aquatic invasive species worldwide and it is characterized by a high environmental tolerance. The ingression of the Holsteinian Sea, during the Pleistocene, took place during the climate optimum from the North Sea into the ‘Elbe Estuary’ through the Hamburg region and far to the south‐east into Brandenburg. It has been possible to reconstruct the palaeo‐ecological conditions based in particular on molluscs. Accordingly, environmental conditions ranged from normal marine in the north, via brackish in the transitional area to limnic–fluviatile in the Berlin region. The morphological features of the bay barnacles and their ecological parameters are described here in detail. In addition, we provide a general review of the known Pleistocene Balanidae in northern central Europe.

show abstract

Biology of the common cockle Cerastoderma edule (Linnaeus, 1758) in Ria de Aveiro (NW Portugal): Implications for fisheries management

Cited by 18 publications

References 52 publications

A case study of local ecological knowledge of shellfishers about edible cockle (Cerastoderma edule) in the Ria de Aveiro lagoon, Western Iberia

A case study of local ecological knowledge of shellfishers about edible cockle (Cerastoderma edule) in the Ria de Aveiro lagoon, Western Iberia

Evolutionary and ecological insights from vital staining of bivalve oocytes: A Red Queen at the sweepstakes?

The bay barnacle Amphibalanus improvisus (Darwin, 1854) in the Pleistocene of Europe? A review of Pleistocene Balanidae of northern Central Europe

Contact Info

Product

Resources

About