Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina
A total of 687 adult nematomorphs of four species of Gordiida: Chordodes brasiliensis (393 specimens), Noteochorododes cymatium (47 specimens), N. talensis (162 specimens) and Pseudochordodes dugesi (85 specimens) were collected during a period of 1 year from El Simbolar stream, Argentina. Free-livi...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022149X_v85_n3_p319_Salas http://hdl.handle.net/20.500.12110/paper_0022149X_v85_n3_p319_Salas |
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paper:paper_0022149X_v85_n3_p319_Salas2023-06-08T14:46:39Z Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina Argentina article Chordodes brasiliensis female male Nematomorpha nonhuman Noteochorododes cymatium Noteochorododes talensis pH measurement Pseudochordodes dugesi seasonal variation sex difference sex ratio stream (river) water flow water quality water temperature Animals Argentina Female Helminths Hydrogen-Ion Concentration Male Microscopy Seasons Sex Characteristics Water Chordodes Cymatium Nematomorpha Pseudochordodes A total of 687 adult nematomorphs of four species of Gordiida: Chordodes brasiliensis (393 specimens), Noteochorododes cymatium (47 specimens), N. talensis (162 specimens) and Pseudochordodes dugesi (85 specimens) were collected during a period of 1 year from El Simbolar stream, Argentina. Free-living worms were abundant during autumn and spring, but their number decreased during winter and summer. Males were shorter and significantly more abundant than females. The presence of N. cymatium, N. talensis and P. dugesi was correlated with water temperature and these species were most abundant in winter and spring. The presence of C. brasiliensis was correlated with flow rate and pH; this species was more abundant in autumn and winter. These four species are sympatric. © 2010 Cambridge University Press. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022149X_v85_n3_p319_Salas http://hdl.handle.net/20.500.12110/paper_0022149X_v85_n3_p319_Salas |
| institution |
Universidad de Buenos Aires |
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I-28 |
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R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina article Chordodes brasiliensis female male Nematomorpha nonhuman Noteochorododes cymatium Noteochorododes talensis pH measurement Pseudochordodes dugesi seasonal variation sex difference sex ratio stream (river) water flow water quality water temperature Animals Argentina Female Helminths Hydrogen-Ion Concentration Male Microscopy Seasons Sex Characteristics Water Chordodes Cymatium Nematomorpha Pseudochordodes |
| spellingShingle |
Argentina article Chordodes brasiliensis female male Nematomorpha nonhuman Noteochorododes cymatium Noteochorododes talensis pH measurement Pseudochordodes dugesi seasonal variation sex difference sex ratio stream (river) water flow water quality water temperature Animals Argentina Female Helminths Hydrogen-Ion Concentration Male Microscopy Seasons Sex Characteristics Water Chordodes Cymatium Nematomorpha Pseudochordodes Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina |
| topic_facet |
Argentina article Chordodes brasiliensis female male Nematomorpha nonhuman Noteochorododes cymatium Noteochorododes talensis pH measurement Pseudochordodes dugesi seasonal variation sex difference sex ratio stream (river) water flow water quality water temperature Animals Argentina Female Helminths Hydrogen-Ion Concentration Male Microscopy Seasons Sex Characteristics Water Chordodes Cymatium Nematomorpha Pseudochordodes |
| description |
A total of 687 adult nematomorphs of four species of Gordiida: Chordodes brasiliensis (393 specimens), Noteochorododes cymatium (47 specimens), N. talensis (162 specimens) and Pseudochordodes dugesi (85 specimens) were collected during a period of 1 year from El Simbolar stream, Argentina. Free-living worms were abundant during autumn and spring, but their number decreased during winter and summer. Males were shorter and significantly more abundant than females. The presence of N. cymatium, N. talensis and P. dugesi was correlated with water temperature and these species were most abundant in winter and spring. The presence of C. brasiliensis was correlated with flow rate and pH; this species was more abundant in autumn and winter. These four species are sympatric. © 2010 Cambridge University Press. |
| title |
Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina |
| title_short |
Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina |
| title_full |
Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina |
| title_fullStr |
Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina |
| title_full_unstemmed |
Sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of Gordiida (Nematomorpha) from Catamarca, Argentina |
| title_sort |
sexual size dimorphism, sex ratio and the relationship between seasonality and water quality in four species of gordiida (nematomorpha) from catamarca, argentina |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022149X_v85_n3_p319_Salas http://hdl.handle.net/20.500.12110/paper_0022149X_v85_n3_p319_Salas |
| _version_ |
1768546571067064320 |