نتایج جستجو برای: corbicula fluminalis
تعداد نتایج: 453 فیلتر نتایج به سال:
The level of O2 in water is highly variable in the aquatic environment and is a major ventilatory drive in all animals breathing water. Low O2 partial pressure (PO2) strongly stimulates ventilatory activity compared to air-equilibrated or O2-enriched water. We studied the influence of ventilatory activity on the bioaccumulation rate of Cd in the freshwater Asiatic clam Corbicula fluminea for PO...
Until recently few studies of amino acid racemization of fossil bivalves and gastropods collected from river terrace deposits in Europe were based on the analysis of the intra-crystalline fraction. Instead they were based on the epimerization (racemization) of a single amino acid, isoleucine, and its inter-conversion to alloisoleucine. This paper presents data from the analysis of the intra-cry...
The Asian clam Corbicula fluminea, originating from Southeast Asia, was first recorded in Lake Constance in 2003 and developed local mass occurrences afterwards. Effects of harsh winter conditions in 2005/2006 associated with a strongly decreasing water level were studied at 3 different depths at and below the mean low water level (MLL, MLL -1 m and MLL -3 m). Low winter temperatures produced a...
The Asian clam of the genus Corbicula is most successful freshwater invader worldwide. In this research note, presence largillierti recorded for first time in Lower São Francisco River. This record based on collection living organisms from Xingó Hydroelectric Power Plant reservoir. second corbiculid species region. Further investigation required characteristics such as its distribution, interac...
We compared filtering rates (FR) and mortalities between freshwater filter-feeding bivalve Corbicula leana acclimatized (AM) and non-acclimatized (NAM) to an cyanobacterial bloom (mainly Microcystis aeruginosa) over seven days. Both mussel populations were simultaneously stocked into mesocosms constructed in littoral zones of a eutrophic lake at a density of 740 ind. m(-2) for 16 days. NAMs dec...
UNLABELLED The effects of temperature and salinity on the metabolism of the Asiatic clam Corbicula fluminea (mollusca, Lamellibranchia) were studied experimentally. Firstly, three indexes of basal metabolism (oxygen consumption rate, OCR; ammonia excretion rate, AER; and CO2 emission rate, CER), patterns of diurnal rhythm and O: N ratios were measured for three size ranges (large: h = 25.54 ± 1...
This contribution presents a new observation of Corbicula fluminea (O. F. Müller) in Poland, found 2021 the Nida River, 40 km north nearest known locations. No species genus has been previously recorded Nida, continuously explored for freshwater mussels since 2019. Live specimens were 20% collected sediment samples. The presence young clams suggests that population may be expanding rapidly thro...
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