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ABSTRACT As a result of phenotypic plasticity, the cupped oysters ( Crassostrea ) are difficult to identify by means of their morphology. However, molecular DNA markers are a useful means of discriminating among these species. Cupped oysters are one of the most widely cultured marine...
ABSTRACT In a previous paper, we have reported on a new, troglobitic species of Georissa and its possible parapatric origin from Georissa saulae Benthem-Jutting, 1966 , which occurs outside the cave system of Batu Sanaron, a limestone outcrop in Sabah, Malaysian Borneo. These analyses were based...
ABSTRACT Opportunistically, the limpet Patella vulgata will switch from microphagous grazing to feeding on attached macroalgae or, a novel finding, on accumulations of stranded seaweeds. Macroalgal food is ingested primarily at night during emersion, when the thalli come to lie on the rock...
ABSTRACT The family Physidae (Pulmonata: Basommatophora) is a group of freshwater hermaphroditic snails that have a Holarctic distribution with extension into Central and South America. Despite considerable literature justifying various taxonomic schemes and groupings, no classification has been...
ABSTRACT The intertidal snail Batillaria exhibits remarkable variation in the shell colour within and among populations. Field study was conducted to determine the factors in maintaining observed shell colour polymorphism. Geographical variations in shell colour polymorphisms in B. attramentaria...
ABSTRACT Specimens of four sympatric intertidal limpet species ( Siphonaria dayi, S. tenuicostulata , S. anneae and S. nigerrima ) were collected from four localities on the east coast of South Africa and southern Mozambique. Their phylogenetic relationships were investigated using sequences of...
ABSTRACT Pseudanodonta complanata is listed as ‘Near Threatened’ on the IUCN Red List ( IUCN, 2006 ) and is a species of conservation priority on the UK Biodiversity Action Plan. The UK is host to some of the largest populations of this species, but little is known about their reproductive...
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