Cockle population dynamics: recruitment predicts adult biomass, not the inverse

Magalhães, Luísa; Freitas, Rosa; Montaudouin, Xavier de

doi:10.1007/s00227-015-2809-3

Cited by 24 publications

(24 citation statements)

References 31 publications

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“…Abundance in an exploited bivalve population depends on the balance between inputs (reproduction/recruitment and growth) and outputs (mortality and fishery removals) of adult/mature individuals. Reproduction and subsequent succesful recruitment are crucial for population sustainability ( Magalhães, Freitas & Montaudouin, 2016 ). However, water temperature is only one of the myriad components determining recruitment success ( Magalhães, Freitas & Montaudouin, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…Reproduction and subsequent succesful recruitment are crucial for population sustainability ( Magalhães, Freitas & Montaudouin, 2016 ). However, water temperature is only one of the myriad components determining recruitment success ( Magalhães, Freitas & Montaudouin, 2016 ). In the case of the Goiana estuary, early maturation due to more constant water temperature, even through the rainy season, can also be playing an important role.…”

Section: Discussionmentioning

confidence: 99%

“…Species living in intertidal habitats present spatio-temporal resulting from interactions between physical (tidal amplitude, sub-aereal exposure, water salinity and substratum) and biological (predation, competition, fisheries and other) factors ( Rodil et al, 2008 ; Magalhães, Freitas & Montaudouin, 2016 ; Gerwing et al, 2016 ). Moreover, other variables can influence the distribution of these organisms, as reproductive behaviour, food availability, hydrodynamics, organic matter in the sediments and a number of combinations among them ( Araújo & Rocha-Barreira, 2004 ; Gerwing et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

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Seasonal variation in the abundance and distribution ofAnomalocardia flexuosa(Mollusca, Bivalvia, Veneridae) in an estuarine intertidal plain

Silva-Cavalcanti

Costa

Alves

2018

PeerJ

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Spatial and temporal density and biomass of the infaunal mollusk Anomalocardia flexuosa (Linnaeus, 1767) evaluated a tidal plain at Goiana estuary (Northeast Brazil). Three hundred and sixty core samples were taken during an annual cycle from three intertidal habitats (A, B and C). Shell ranged from 2.20 to 28.48 mm (15.08 ± 4.08 mm). Recruitment occurred more intensely from January to March. Total (0–1,129 g m−2) differed seasons (rainy and dry), with highest values in the early rainy season (221.0 ± 231.44 g m−2); and lowest values in the late dry season (57.34 ± 97 g m−2). The lowest occurred during the late rainy (319 ± 259 ind m−2) and early dry (496 ± 607 ind m−2) seasons. Extreme environmental situations (e.g., river flow, salinity and water temperature) at the end of each season also affected density ranges (late dry: 0–5,798 ind m−2; late rainy: 0–1,170 ind m−2). A. flexuosa in the Goiana estuary presented a dominance of juvenile individuals (shell length < 20 mm), with high biomass main the recruitment period. Average shell length, density and biomass values suggest overfishing of the stock unit. A. flexuosa is an important food and income resource along its whole distribution range. The species was previously also known as Anomalocardia brasiliana (Gmelin, 1791).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal variation in the abundance and distribution ofAnomalocardia flexuosa(Mollusca, Bivalvia, Veneridae) in an estuarine intertidal plain

Silva-Cavalcanti

Costa

Alves

2018

PeerJ

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“…Cockles density was higher in the studied areas characterized by higher maximum temperature. This can result either from increased recruitment success (Gam et al, 2010;Magalhães et al, 2016) or from better conditions in terms of food quality and quantity. Nevertheless, the system presenting the highest cockle density (Sidi Moussa lagoon) was also the system with one of the lowest trematode abundance suggesting that when a certain density threshold is passed, cercariae are diluted among second intermediate host and consequent lower mean metacercariae infection is observed, as previously highlighted by Magalhães et al (2016).…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, Thieltges and Reise (2007) demonstrated higher metacercariae abundance (the trematode parasitic stage occurring in the second intermediate host) positively correlated to an increase in abundance and diversity of the higher trophic level host communities. On the other hand, higher host density can also promote a dilution effect and therefore decrease the parasite burden in a specific host (Buck et al, 2017;Magalhães et al, 2016;Mouritsen et al, 2003). Concerning the abiotic environmental factors, different conditions of temperature (Achiorno and Martolrelli, 2016;de Montaudouin et al, 2016a), salinity and pH (Koprivnikar et al, 2010(Koprivnikar et al, , 2014Mouritsen, 2002;, among others, can also have an influence on trematode dynamics (Wilson et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Large scale patterns of trematode parasite communities infecting Cerastoderma edule along the Atlantic coast from Portugal to Morocco

Correia

Magalhães

Freitas

et al. 2020

Estuarine, Coastal and Shelf Science

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Latitudinal influence on gametogenesis and host–parasite ecology in a marine bivalve model

Mahony

Lynch

Egerton

et al. 2021

Ecology and Evolution

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Reproduction and parasites have significant impacts on marine animal populations globally. This study aimed to investigate the associative effects of host reproduction and a host–parasite interplay on a marine bivalve, along a geographic gradient of latitude. Cockles Cerastoderma edule were sampled from five European sites (54°N to 40°N), between April 2018 and October 2019. A histological survey provided data on trematode (metacercaria and sporocyst life stages), prevalence, and cockle stage of gametogenesis to assess the influence of a latitudinal gradient on both interplays. Sex ratios at the northernmost sites were skewed toward females, and spawning size was reduced at the lower latitudes. Trematode infection did not follow a latitudinal gradient. Localized site‐related drivers, namely seawater temperature, varied spatially, having an impact on cockle–trematode interactions. Spawning was related to elevated temperatures at all sites. Prolonged spawning occurred at southern latitudes, where seawater temperatures were warmer. Trematode prevalence and the impact of trematodes on gametogenesis were found to be spatially variable, but not latitudinally. Therefore, it is not possible to determine the likelihood of boom and bust events in cockles, based on the latitudinal location of a population. In terms of sublethal impacts, it appeared that energy was allocated to reproduction rather than somatic growth in southern populations, with less energy allocated to reproduction in the larger, northern cockles. The demonstrated spatial trend of energy allocation indicates the potential of a temporal trend of reduced cockle growth at northern sites, as a result of warming sea temperatures. This awareness of the spatially varying drivers of populations is crucial considering the potential for these drivers/inhibitors to be exacerbated in a changing marine environment.

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Cockle population dynamics: recruitment predicts adult biomass, not the inverse

Cited by 24 publications

References 31 publications

Seasonal variation in the abundance and distribution ofAnomalocardia flexuosa(Mollusca, Bivalvia, Veneridae) in an estuarine intertidal plain

Seasonal variation in the abundance and distribution ofAnomalocardia flexuosa(Mollusca, Bivalvia, Veneridae) in an estuarine intertidal plain

Large scale patterns of trematode parasite communities infecting Cerastoderma edule along the Atlantic coast from Portugal to Morocco

Latitudinal influence on gametogenesis and host–parasite ecology in a marine bivalve model

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