Donax denticulatus is a key mollusk for the ecology of sandy beaches, serving as a controller of organic matter, microorganisms, and as bioindicator of heavy metals pollution. This page was last edited on 15 january 2020, at 08. Pdf the population dynamics and secondary production of the wedge clam donax trunculus linnaeus, 1758 were studied in the gulf of. The filtration rate was measured in a total period of four hours with determinations made each hour. All aspects of marine science are treated by the bulletin of marine science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and. Biology and population dynamics of the suspensionfeeding wedge clam donax trunculus linnaeus, 1758 were studied for months november 1994april 1996 along the italian southern adriatic coast near the lagoon of lesina.
Unlike the donax populations of higher latitudes, fluctuations in temperature are not important, but periodic reduction in salinity with coincident clouding and. Pdf abundance and relative growth of donax denticulatus. Oxygen consumption was measured with an oxygen electrode, and feeding rate was determined by the rate of depletion of unialgal cultures. Bulletin of marine science, volume 36, number 1, january 1985, pp. Relationships between environmental factors and donax. Evaluating a proxy for sea surface temperature and nearshore paleoenvironmental reconstructions for the northern caribbean. Coquina clams donax variabilis were sampled monthly at 2 sites in pinellas county, florida, to document recruitment and growth. Massive polymorphism and natural selection in donacilla. Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis. Growth and size distribution of intertidal population was. Genetic variability, shell and sperm morphology suggest. Although in cuba donax denticulatus is not a currently exploited species, the information concerning a stock assessment is a basic step for future use of this resource.
Growth and size distribution of intertidal population was analyzed monthly between october 2000 and june 2001 in playa brava, chaco pata. Experimental studies of a benthic predatorprey relationship. Pdf aggregated patterns of dispersion in donax denticulatus. Histological staging of a subset of the preserved gonads was performed to assess patterns in reproduction. Pdf population dynamic of donax denticulatus bivalvia.
A total of 3 taxa were collected and identified, at least to familylevel. Systematics and biogeography of the genus donax mafiadoc. Apr 01, 2011 coquina clams donax variabilis were sampled monthly at 2 sites in pinellas county, florida, to document recruitment and growth. Evaluating a proxy for sea surface temperature and nearshore paleoenvironmental reconstructions for the.
Specimens were found at depths between 0 and 2 m, mainly in fine grain bottoms. The bivalve genus donax is distributed almost worldwide, except for polar regions, and can be locally very abundant on exposed sandy beaches ansell, 1983. Studies on the biology of the west indian beach clam, donax denticulatus linne. Trueman er 1971 the control of burrowing and the migratory behaviour of donax denticulatus bivalvia, tellinacea, j. The control of burrowing and the migratory behaviour of donax denticulatus. Presentation mode open print download current view. Introduction the coquina clam, donax variabilis, lives on southeastern north american shores on coarsegrained, sandy beaches with moderate to high waves. Sastre 1984 concluded that food availability was the major factor affecting populations of donax denticulatus, so that abundance and maximum size of individuals were greatest on beaches with the highest levels of particulate organic carbon. Bioecological aspects and heavy metal contamination of the mollusk donax denticulatus in the colombian.
The goal of this study was to characterize some ecological aspects of d. Activity and heart rate of bivalve molluscs in their. Mizrahi department of life science, bar llan university, ramat gan, israel received 7 april 1989. Donax denticulatus linnaeus 1758, also referred to as the common caribbean donax clam and locally as chip chips, belong to the donacidae family and are shortlived bivalves found from the caribbean to northern brazil. Text is available under the creative commons attributionsharealike license.
The oxygen consumption and feeding rate of the bivalve molluscs donax incamatus and d. The lifehistory of donax denticulatus linne is described and the environmental factors which affect it are discussed. Donacidae occupy a major role in nearshore trophic webs, as they feed on phytoplankton, while in turn they are prey for gastropods, demersal fish, birds and mammals ansell. Status of population dynamics of the asian wedge clam, donax. Population dynamics and ecology of the surf clam donax serra. Sandy beaches as ecosystems based on the proceedings of. The genus is sometimes known as bean clams or wedge shells.
Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Genetic variability, shell and sperm morphology suggest that. Files are available under licenses specified on their description page. Changes in shoreline and the relation between diversity of. Salinity, precipitation, and sea surface temperature. This site is provided for hosting pdf files that have been protected using the drumlin pdf security system. Activity and heart rate of bivalve molluscs in their natural.
Studies on the biology of the west indian beach clam, donax. Reproductive cycle and recruitment patterns of the coquina. Donax denticulatus is a dominant member of the sandy beach communities of the venezuelan caribbean coast. Media in category donax denticulatus the following 5 files are in this category, out of 5 total.
Donax denticulatus is commonly encountered in the wash zone of sandy beaches in the caribbean. In the southeastern us they are known as coquina, a word that is also used for the hard limestone concretions of their shells and those. Pdf the ecology of donax trunculus linnaeus and donax. Growth and size distribution of donax denticulatus mollusca. Differences between the atlantic and eastern gulf populations appear to be of similar type and magnitude to those between the eastern and western gulf populations, and are within the range of variation of three populations of d.
Abundance and relative growth of donax denticulatus bivalvia. Bulletin of marine science, volume 17, number 1, march 1967, pp. Geological factors coarse sand was only found in esperanza. Pdf security, encryption and drm from drumlin security. Of the four sites studied, the one where the substrate was a mixture of small stones and sand contained the highest densities of donacilla. The oxygen consumption and feeding of donax incarnatus and. A population of this bivalve was monthly sampled in playa chucheros at the bay of malaga. This page was last edited on february 2020, at 09. Print iconographia zoologica special collections university of amsterdam ubainv0274 078 11 0010. A population of this bivalve was monthly sampled in. The effect of salinity and temperature on the filtration rate of d. These organisms comprised 56 and 83 species of bivalves and 30 families and 50 species of gastropods. Population dynamics on wedge clam, donax scortum is still unknown in asia. Donax serra and donax sordidus are bivalves inhabiting the intertidal area of sandy beaches in the eastern cape, south africa.
Donacidae at carenero beach, southeastern cuba download download pdf. Biology and population dynamics of donax trunculus l. Download fulltext pdf download fulltext pdf download fulltext pdf relationships between environmental factors and donax denticulatus populations in puerto rico. With the aim to generate new data on this species structure, growth and secondary production, monthly samples of d. Photos taken with traveler dc6300 wikimedia commons. Bioecological aspects and heavy metal contamination of the mollusk donax denticulatus in the colombian caribbean coastline. Donax hanleyanus in uruguay inter research mafiadoc.
Aggregated patterns of dispersion in donax denticulatus. All structured data from the file and property namespaces is available under the creative commons cc0 license. Activity and heart rate of bivalve molluscs in their natural habitat. Bioecological aspects and heavy metal contamination of the. Peak spawning and recruitment were observed in early spring, and growth rates were.
Notes on the ecology of donax denticulatus linne\ud \ud \ud \ud \ud \ud \ud \ud \ud \ud \ud by b. Pdf relationships between environmental factors and. My informant would not give me particulars on how the mystical potion was made. Unlike the donax populations of higher latitudes, fluctuations in temperature are not important, but periodic reduction in salinity with coincident clouding and contamination of the water during the rainy seasons has regular and prolonged effects on populations.
The same plant is the source for reeds for clarinet, sax, oboe, bassoon, bagpipes and so on. We describe a massive polymorphism for shell colour and pattern in donacilla cornea, a shallowburrowing bivalve which inhabits the midlittoral of sandy and stony beaches in southern and western europe. Return to article details population dynamic of donax denticulatus bivalvia. Donax is a genus of small, edible saltwater clams, marine bivalve molluscs. Donacidae occupy a major role in nearshore trophic webs, as they feed on phytoplankton, while in turn they are prey for gastropods, demersal fish, birds and mammals ansell, 1983. Clams of the species donax variabilis migrate shoreward during rising tides and seaward during falling tides. The ecology of donax trunculus linnaeus and donax semistriatus. The bivalve donax denticulatus was found at all selected beaches and in both samplings. Oxygen consumption was measured with an oxygen electrode, and feeding rate was determined by the rate of depletion ofunialgal cultures.
The spatial pattern of a population of donax trunculus l. Media in category photos taken with traveler dc6300 the following 3 files are in this category, out of 3 total. Donax denticulatus and environmental factors 223 0 5000 mani u d n c o d e m a n e c o o. Donax denticulatus linnaeus, 1758 world register of marine. Population dynamics of the tropical bivalve cardita. The effect of grain size on the burrowing of two donax. Pdf population dynamics and secondary production of donax. Mani beach exhibits significantly higher population densities followed by luquillo, esperanza. The bulletin of marine science is dedicated to the dissemination of high quality research from the worlds oceans. Sandy beaches as ecosystems based on the proceedings of the first international symposium on sandy beaches, held in port elizabeth, south africa, 1721 january 1983. Arundo donax is a very tall and robust bamboolike, perennial grass with large, spreading clumps of thick culms to 6.
This study investigated the effect of grain size on the burrowing performance of these two species in the laboratory to elucidate the influence of grain size on the longshore distribution of donax populations and, consequently, the importance of. Pdf relationships between environmental factors and donax. Feeding, growth and eggcollar production in longterm cultures of the gastropod drill polinices alderi forbes feeding on the bivalve tellina tenuis da costa. Studies on the biology of the west indian beach clam. Donax denticulatus population density and size distribution were studied in five different puerto rican beaches for a one year period in order to determine relationships between the densities and size distributions of the clam, and twelve different physicochemical parameters of sediments and water. Donax dentifer is a dominant member of the sandy beach communities of the colombian pacific coast. The oxygen consumption and feeding rate of the bivalve molluscs donax incarnatus and d.
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