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The Role of Sponges in the Terra Nova Bay Ecosystem
One hundred and twenty five demosponge species are known from the Ross Sea, 49 of which have been recorded in Terra Nova Bay within the framework of the PNRA ecological project. The most commonExpand
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Reproductive strategies of Mycalecontarenii (Porifera: Demospongiae)
Abstract The sexual and asexual phases of the reproductive cycle of the sponge Mycalecontarenii (Martens, 1824) were studied from samples collected over a period of 2 years (June 1994 to May 1996) inExpand
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Life-Cycle Traits of Paraleucilla magna, a Calcareous Sponge Invasive in a Coastal Mediterranean Basin
The calcareous sponge Paraleucilla magna, originally observed along the Brazilian coast (Atlantic Ocean), is the only allochthonous invasive species of Porifera reported in the Mediterranean Sea. AExpand
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A 3-year investigation of sexual reproduction in Geodia cydonium (Jameson 1811) (Porifera, Demospongiae) from a semi-enclosed Mediterranean bay
The reproductive cycle of Geodia cydonium in a semi-enclosed Mediterranean bay (Porto Cesareo, SW Apulia) was studied with monthly frequency over a 3-year period. The investigation was carried out byExpand
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Reproductive cycles of the sympatric excavating sponges Cliona celata and Cliona viridis in the Mediterranean Sea
Abstract. Clionaids are excavating sponges, which live in and grow into calcareous substrates. We studied the sexual reproductive cycles of two clionaid sponges coexisting in a Mediterranean coastalExpand
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Epidemic Mortality of the Sponge Ircinia variabilis (Schmidt, 1862) Associated to Proliferation of a Vibrio Bacterium
In recent years, several episodes of mass mortality of sessile epibenthic invertebrates, including sponges, have been recorded worldwide. In the present study, we report a disease event on IrciniaExpand
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Mortality of commercial sponges: Incidence in two mediterranean areas
Abstract In 1986 a severe epidemic affecting horny sponges broke out in several areas of the Mediterranean Sea. The disease rapidly spread to species of marketing interest belonging to the generaExpand
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Sexual reproduction, larval development and release in Spongia officinalis L. (Porifera, Demospongiae) from the Apulian coast
The reproductive cycle of the bath sponge Spongia officinalis L. has been studied over 1 year on 11 tagged specimens of different sizes (from 82 to 886 ml, in volume) from Ionian coasts of Apulia (SEExpand
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Meteorological and water quality changes in Lake Trasimeno (Umbria, Italy) during the last fifty years
This paper illustrates the results of an analysis performed on historical data of the main meteorological and water quality variables collected during the last fifty years in the basin of LakeExpand
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Biochemical and ultrastructural effects of nitrite in rainbow trout: liver hypoxia as the root of the acute toxicity mechanism.
In Salmo gairdneri specimens exposed for 12, 24, 48, and 72 hr to nitrite (450 micrograms NO2-N) the main biochemical parameters of cerebral and hepatic hypoxia were studied. Observations on liverExpand
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