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 ...
Jara Seguel, Pedro
,
Parada Zamorano, Esperanza
,
Peredo, Santiago
,
Palma Rojas, Claudio
,
Von Brand, Elisabeth
,
[NUCLEAR DNA CONTENT IN TWO CHILEAN SPECIES OF PISIDIUM (VENEROIDA: SPHAERIIDAE)]
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NUCLEAR DNA CONTENT IN TWO CHILEAN SPECIES OF PISIDIUM (VENEROIDA: SPHAERIIDAE)
Laboratory experiments were carried out to evaluate juvenile and adult mortality in Musculium argentinum over a given period of time. Specimens of M. argentinum were collected in May 2009 from the evacuation channel of the Lautaro fish farm, Araucania Region, Chile (38 degrees 32' S, 72 degrees 2...
Parada Zamorano, Esperanza
,
Lara, Gladys
,
Peredo, Santiago
,
[EVALUATION OF JUVENILE AND ADULT MORTALITY DYNAMICS IN THE FINGERNAIL CLAM MUSCULIUM ARGENTINUM (D'ORBIGNY, 1835) (BIVALVIA: SPHAERIIDAE)]
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EVALUATION OF JUVENILE AND ADULT MORTALITY DYNAMICS IN THE FINGERNAIL CLAM MUSCULIUM ARGENTINUM (D'ORBIGNY, 1835) (BIVALVIA: SPHAERIIDAE)
To evaluate the capacity for movement of freshwater mussels in sandy and sand-gravel substrates and to test their ability to differentiate among types and qualities of substrates, experiments were carried out in the laboratory and in the field, using Diplodon chilensis from Lake Panguipulli, Chil...
Lara, Gladys
,
Parada Zamorano, Esperanza
,
[Substrate selection by the freshwater mussel Diplodon chilensis (Gray, 1828): field and laboratory experiments]
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Substrate selection by the freshwater mussel Diplodon chilensis (Gray, 1828): field and laboratory experiments
This study reports the present distribution range of Musculium argentinum (D'Orbigny, 1835) and Musculium patagonicum Pilsbry, 1911 in Chile, from sampling data carried out from 2002 to 2006. Morphological and biometric characteristics of the studied populations show that M. argentinum is discont...
Parada Zamorano, Esperanza
,
Peredo, Santiago
,
Jara-Seguel, Pedro
,
[PRESENT RECORD OF SPECIES OF MUSCULIUM LINK, 1807 (BIVALVIA: SPHAERIIDAE) IN CHILE WITH NOTES ON ITS MORPHOLOGY AND BIOMETRY OF ITS POPULATIONS]
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PRESENT RECORD OF SPECIES OF MUSCULIUM LINK, 1807 (BIVALVIA: SPHAERIIDAE) IN CHILE WITH NOTES ON ITS MORPHOLOGY AND BIOMETRY OF ITS POPULATIONS
Life histories and population dynamics of two populations of Musculium argentinum, one inhabiting a fluvial environment and the other a lacustrine one, are compared. Musculium argentinum is oviparous, iteroparous, and sequential incubator, reproducing throughout the year. The life cycle pattern o...
Peredo, Santiago
,
Parada Zamorano, Esperanza
,
Jara-Seguel, Pedro
,
[LIFE HISTORIES AND DYNAMICS OF STREAM AND LACUSTRINE POPULATIONS OF MUSCULIUM ARGENTINUM (D'ORBIGNY, 1842) (BIVALVIA: SPHAERIIDAE) FROM SOUTHERN CHILE]
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LIFE HISTORIES AND DYNAMICS OF STREAM AND LACUSTRINE POPULATIONS OF MUSCULIUM ARGENTINUM (D'ORBIGNY, 1842) (BIVALVIA: SPHAERIIDAE) FROM SOUTHERN CHILE
The aim of the present study was to determine and compare taxa richness, abundance and diversity of the edaphic mesofauna community between plantations of cranberries (Vaccinium sp.) subjected to organic and conventional management in farms in central-south Chile (37 degrees 28'S), as also to eva...
Peredo P, Santiago F.
,
Parada Zamorano, Esperanza
,
Vega C, Marcela
,
Barrera S, Claudia P.
,
[EDAPHIC MESOFAUNA COMMUNITY STRUCTURE IN ORGANIC AND CONVENTIONAL MANAGEMENT OF CRANBERRY (Vaccinium sp.) PLANTATIONS: AN AGROECOLOGICAL APPROACH]
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EDAPHIC MESOFAUNA COMMUNITY STRUCTURE IN ORGANIC AND CONVENTIONAL MANAGEMENT OF CRANBERRY (Vaccinium sp.) PLANTATIONS: AN AGROECOLOGICAL APPROACH
The gonadal organization and cytological characteristics of gametogenesis in a population of the freshwater clam Musculium argentinum (d'Orbigny, 1835) are described. Sections of the rather small gonad demonstrate the existence of hermaphroditic specimens, and is composed of hermaphrodite follicl...
Peredo, Santiago
,
Jara-Seguel, Pedro
,
Parada Zamorano, Esperanza
,
Von Brand, Elisabeth
,
[GONADAL ORGANIZATION AND GAMETOGENESIS IN MUSCULIUM ARGENTINUM (VENEROIDA: SPHAERIIDAE) FROM A POPULATION IN SOUTHERN CHILE]
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GONADAL ORGANIZATION AND GAMETOGENESIS IN MUSCULIUM ARGENTINUM (VENEROIDA: SPHAERIIDAE) FROM A POPULATION IN SOUTHERN CHILE
Sphaerids have adopted a variety of life strategies that have allowed them to show a cosmopolitan distribution. Among these strategies, those related to reproduction, such as sexuality (hermaphroditism), offspring incubation, fertility, number of generations per year, times an individual reproduc...
Jara-Seguel, Pedro
,
Peredo, Santiago
,
Von Brand, Elisabeth
,
Parada Zamorano, Esperanza
,
[SOME ASPECTS OF THE REPRODUCTIVE BIOLOGY OF TWO POPULATIONS OF MUSCULIUM ARGENTINUM (D'ORBIGNY, 1835) (BIVALVIA: SPHAERIIDAE) FROM SOUTHERN CHILE]
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SOME ASPECTS OF THE REPRODUCTIVE BIOLOGY OF TWO POPULATIONS OF MUSCULIUM ARGENTINUM (D'ORBIGNY, 1835) (BIVALVIA: SPHAERIIDAE) FROM SOUTHERN CHILE
The family Sphaeriidae is a group of cosmopolitan freshwater clams that inhabit temporary and permanent fluvial and lacustrine environments around the world. In Chile, Sphaeriidae is represented by 11 species belonging to the genera Musculium, Pisidium and Sphaerium. In this study, the nuclear DN...
Jara Seguel, Pedro
,
Parada Zamorano, Esperanza
,
Peredo, Santiago
,
Palma Rojas, Claudio
,
von Brand, Elisabeth
,
[Nuclear DNA content in two Sphaeriidae species from Southern Chile (Bivalvia: Veneroida)]
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Nuclear DNA content in two Sphaeriidae species from Southern Chile (Bivalvia: Veneroida)
The empirical evidence obtained by farmers of Huechelepon area (commune of Melipeuco, La Araucania, Chile) indicates that the specie Dasyphyllum diacanthoides, besides presenting medicinal properties, is a winter forage alternative. This property along with its status as endemic forests of Chile ...
Peredo, Santiago F.
,
Parada Zamorano, Esperanza
,
Alvarez, Ricardo
,
Barrera, Claudia
,
[Cutting vegetative propagation of Dasyphyllum diacanthoides, with endogenous resources. An agroecological approach]
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Cutting vegetative propagation of Dasyphyllum diacanthoides, with endogenous resources. An agroecological approach