| pectenotoxin-2 seco acid, 7-epi-pectenotoxin-2 seco acid and pectenotoxin-2 in shellfish and plankton from portugal. | pectenotoxin-2 seco acid (ptx2sa) and 7-epi-pectenotoxin-2 seco acid (7-epi-ptx2sa) were found in portuguese shellfish both by fluorescence detection after adam derivatisation and, liquid chromatography coupled with mass spectrometry detection. two time-series both with blue mussel (mytilus edulis) and common cockle (cerastoderma edule) from aveiro lagoon illustrate how ptx2sa has a strong association with dinophysis acuta occurrence in the plankton, as well as dinophysis fortii. data so far exc ... | 2002 | 12076652 |
| digenean larvae parasitizing cerastoderma edule (bivalvia) and nassarius reticulatus (gastropoda) from ria de aveiro, portugal. | this work reviews the significant community of digenean trematodes observed infecting the edible cockle, cerastoderma edule, and the snail nassarius reticulatus in the channel of s. jacinto, ria de aveiro estuary, portugal. the digenea observed comprise 15 species, belonging to the families bucephallidae (1), echinostomatidae (4), gymnophallidae (3), lepocreadiidae (1), microphallidae (1), monorchiidae (1), renicolidae (1), strigeidae, (1), and zoogonidae (2). the species were studied by light m ... | 2006 | 16729689 |
| the macrobenthic community along a mercury contamination in a temperate estuarine system (ria de aveiro, portugal). | mercury is a widely distributed environmental pollutant and a toxic element to all living organisms. this study represents an attempt to evaluate its correlation with the macrobenthic community structure in a temperate estuarine system, the ria de aveiro (portugal). the macrobenthic community structure showed significant differences along the mercury gradient. overall, the increase of mercury contamination was associated with reduced total abundance, lower species richness, and dominance of tole ... | 2008 | 18765161 |
| diopatra neapolitana (polychaeta: onuphidae) as a second intermediate host of gymnophallus choledochus (digenea: gymnophallidae) in the aveiro estuary (portugal): distribution within the host and histopathology. | this is the first host record of gymnophallus choledochus metacercariae infecting the polychaete diopatra neapolitana in the aveiro estuary (portugal). the metacercariae were found unencysted, and their morphology is similar to that presented by metacercariae harbored by nereis diversicolor and cerastoderma edule, although they are larger in size. in d. neapolitana, the prevalence and mean intensity of the infection was very high, at 100% and 202 +/- 139 metacercariae per host, respectively, sug ... | 2009 | 19441876 |