Results 131 to 140 of about 532 (156)
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Polyploidy in three sphaeriids (Bivalvia: Veneroida) from Korea
Molluscan Research, 2008In this paper, polyploidy is reported to occur in three species of Korean Sphaeriidae, Musculium cf. lacustre, Sphaerium cf. corneum and Sphaerium sp. The mitotic chromosome numbers of M. cf. lacustre and S. cf. corneum are both 190, and Sphaerium sp. has a mitotic chromosome number of 171. The basic chromosome number of these Sphaeriidae is probably x=
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Journal of Experimental Marine Biology and Ecology, 2007
Coelomactra antiquata is a commercially exploited bivalve, and its populations have been severely declining in the coast of China during the last two decades. In order to provide guidelines for conservation strategies and management programs, four populations of C.
Lingfeng Kong, Qi Li, Zhaoxing Qiu
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Coelomactra antiquata is a commercially exploited bivalve, and its populations have been severely declining in the coast of China during the last two decades. In order to provide guidelines for conservation strategies and management programs, four populations of C.
Lingfeng Kong, Qi Li, Zhaoxing Qiu
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Proceedings of the Academy of Natural Sciences of Philadelphia, 2017
. Rheodreissena Geda et al. 2018, a recently described genus of Dreissenidae, is represented by living species that inhabit inland freshwaters of Brazil and Venezuela. The type species of Rheodreissena is R.
M. Mansur +5 more
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. Rheodreissena Geda et al. 2018, a recently described genus of Dreissenidae, is represented by living species that inhabit inland freshwaters of Brazil and Venezuela. The type species of Rheodreissena is R.
M. Mansur +5 more
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Nuclear DNA Content in Two Chilean Species ofPisidium(Veneroida: Sphaeriidae)
Journal of Shellfish Research, 2010ABSTRACT The pill clams Pisidium chilense (d'Orbigny, 1846) and Pisidium huillichum (Ituarte, 1999) showed a 2C DNA content of 4.04 ± 0.4 pg and 2.35 ± 0.24 pg, respectively. The somatic DNA content of these 2 Chilean Pisidium Pfeiffer 1821 species is within the range described previously for diploid Heterodonta, despite the fact that both showed a ...
Pedro Jara-Seguel +4 more
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Journal of the Malacological Society of Australia, 1992 Abstract Ten new species of veneroid bivalves from Australia are described including four species of the Veneridae (Pitar (Pitarina) marrowae, P.(P.) potteri, Dosinia lochi, Dosinia queenslandica), three species of Cardiidae (Acrosterigma kerslakae. A. punctolineata, Fulvia voskuili), a crassatellid (Talabrica donharrisi), a tellinid (Tellina ( Abranda)
Healy, John, Lamprell, Kevin L
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Genes & Genomics, 2010
The grand jackknife clam Solen grandis (Dunker, 1861) is an overexploited bivalve species. In order to promote a conservation program for this species, it is necessary to evaluate its genetic diversity and population genetics. For this purpose, we isolated the first set of 18 polymorphic microsatellite markers and examined their allelic variation using
Yang Yuan +3 more
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The grand jackknife clam Solen grandis (Dunker, 1861) is an overexploited bivalve species. In order to promote a conservation program for this species, it is necessary to evaluate its genetic diversity and population genetics. For this purpose, we isolated the first set of 18 polymorphic microsatellite markers and examined their allelic variation using
Yang Yuan +3 more
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Zoologica Scripta, 2002
The cosmopolitan viviparous bivalves of the family Sphaeriidae (fingernail clams) comprise not only some of the smallest freshwater molluscs, but also an abundant and ecologically important group that often dominates benthic communities of springs, ponds and swamps. The origin from marine ancestors and their subsequent evolution in limnic environments,
Alexei V. Korniushin +1 more
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The cosmopolitan viviparous bivalves of the family Sphaeriidae (fingernail clams) comprise not only some of the smallest freshwater molluscs, but also an abundant and ecologically important group that often dominates benthic communities of springs, ponds and swamps. The origin from marine ancestors and their subsequent evolution in limnic environments,
Alexei V. Korniushin +1 more
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Journal of submicroscopic cytology and pathology, 2002
Cytoplasmic acidic phosphoproteins and complex polysaccharides were stained with ammoniacal silver nitrate-formalin and phosphotungstic acid-chromic acid, respectively. In Cerastoderma glaucum (Cardiacea), acrosomal vesicle contents are differentiated into an apical intermediate-dense component and a basal dense region. PTA stained the apical component
M, Erkan, M, Sousa, L, Baldaia
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Cytoplasmic acidic phosphoproteins and complex polysaccharides were stained with ammoniacal silver nitrate-formalin and phosphotungstic acid-chromic acid, respectively. In Cerastoderma glaucum (Cardiacea), acrosomal vesicle contents are differentiated into an apical intermediate-dense component and a basal dense region. PTA stained the apical component
M, Erkan, M, Sousa, L, Baldaia
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Acta Zoologica, 2000
It is argued that the paired structures in adult Montacuta phascolionis previously claimed to be testes are seminal receptacles. The receptacles in 3.0mm long females are filled with sperm cells or spermatids. A 2.0‐mm long specimen had a well‐developed testes exhibiting ripe sperm.
Jespersen, Åse, Lützen, Jørgen
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It is argued that the paired structures in adult Montacuta phascolionis previously claimed to be testes are seminal receptacles. The receptacles in 3.0mm long females are filled with sperm cells or spermatids. A 2.0‐mm long specimen had a well‐developed testes exhibiting ripe sperm.
Jespersen, Åse, Lützen, Jørgen
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1997
Seven new species of bivalves from Australia are figured and described: Pteria howensis sp. nov and P. cooki sp. nov. (Pteriidae); Atrina (Servatrina) palmensis sp. nov. (Pinnidae); Dosinia carpentariana sp. nov. (Veneridae); Euciroa queenslandica sp. nov. (Euciroidae); Corbula (Serracorbula) moretonensis sp.nov and C.
Lamprell, Kevin L., Healy, John M.
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Seven new species of bivalves from Australia are figured and described: Pteria howensis sp. nov and P. cooki sp. nov. (Pteriidae); Atrina (Servatrina) palmensis sp. nov. (Pinnidae); Dosinia carpentariana sp. nov. (Veneridae); Euciroa queenslandica sp. nov. (Euciroidae); Corbula (Serracorbula) moretonensis sp.nov and C.
Lamprell, Kevin L., Healy, John M.
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