Nematode korijenovih kvržica iz roda Meloidogyne pripadaju ekonomski najvažnijoj skupini biljnoparazitskih nematoda i jedne su od najvažnijih biljnih štetnika koji mogu uzrokovati značajne ekonomske gubitke u biljnoj proizvodnji. Oni polifagni, dobro prilagođeni, obligatni endoparaziti gotovo svih viših vrsta, uključujući važne poljoprivredne kulture. Unutar opisano je oko stotinu kojih četiri ...

A nomenclatural study of the Arenaria names referring to species found in Chile is presented. Three names, A. fastigiata, multicaulis, and scopulorum, are illegitimate (Arts. 53.1 52.1 ICN); a new name proposed for fastigiata multicaulis; scopulorum was also nomenclaturally superfluous including type digyna (Art. ICN). digyna, microphylla, oligosperma, pleurantha, rivularis lectotypified, based...

ABSTRACT Estuarine and coastal benthic organisms often experience fluctuations in oxygen levels that can negatively impact their mitochondrial function aerobic metabolism. To study these impacts, we exposed a common sediment-dwelling bivalve, the soft-shell clam Mya arenaria, for 21 days to chronic hypoxia (PO2 ∼4.1 kPa), cyclic ∼12.7–1.9 kPa, mean 5.7 kPa) or normoxia ∼21.1 kPa). pH was manipu...

Three functionally different macrofaunal species (the filter- and/or surface deposit-feeding polychaete Hediste diversicolor, and the suspension-feeding bivalves Mya arenaria and Cerastoderma glaucum) were introduced as single- and two-species treatments into microcosms containing sandy sediment with a natural meiofaunal community. H. diversicolor is a burrowing species building a system of gal...

Bivalve mollusks of the North Atlantic, most prominently the soft shell clam Mya arenaria, are afflicted with an epidemic transmissible disease of the circulatory system closely resembling leukemia. The disease is characterized by a dramatic expansion of blast-like cells in the hemolymph with high mitotic index. Examination of hemolymph of diseased clams revealed high levels of reverse transcri...