Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions
Samples collected from ponds in central Mexico contained male and female specimens of the harpacticoid copepod Elaphoidella grandidieri (Guerne & Richard, 1893). Field-collected ovigerous females were transported to the laboratory where several isofemale lines were established. Cultures were established from a single female and maintained on a mono-algal diet in moderately hard water. Specimens of both sexes, particularly the less known males, were analysed morphologically and compared with records from different geographical regions. Differences among these populations are subtle and not geographically consistent. Variations were found in the relative length of setal elements and ornamentations of swimming legs 1, 2, and 4, the proportions and armature of the exopod of the female leg (P) 5, among other characters. The specimens from Mexico have 1-2 long spines near the posteroventral margin of the anal somite; this character has been described only from a North African population. Our analysis supports the notion that this widespread pantropical species shows a considerable degree of variability in various characters. Since a clonal population of this parthenogenetic species could be established, molecular techniques are recommended to evaluate this variability and determine if E. grandidieri represents a species complex with morphologically similar taxa. The finding of E. grandidieri as an harpacticoid with high reproductive rates suggests that this copepod has an outstanding potential in aquaculture.
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Elaphoidella grandidieri Copépodos Morfología animal Elaphoidella grandidieri Copépodos Morfología animal |
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Elaphoidella grandidieri Copépodos Morfología animal Elaphoidella grandidieri Copépodos Morfología animal Gutiérrez Aguirre, Martha Angélica Doctora autora 14722 Suárez Morales, Eduardo Doctor autor 2036 Cervantes Martínez, Adrián Doctor autor 14987 Sarma, Nandini autor Sarma, S. S. S. Doctor autor 20232 Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions |
| description |
Samples collected from ponds in central Mexico contained male and female specimens of the harpacticoid copepod Elaphoidella grandidieri (Guerne & Richard, 1893). Field-collected ovigerous females were transported to the laboratory where several isofemale lines were established. Cultures were established from a single female and maintained on a mono-algal diet in moderately hard water. Specimens of both sexes, particularly the less known males, were analysed morphologically and compared with records from different geographical regions. Differences among these populations are subtle and not geographically consistent. Variations were found in the relative length of setal elements and ornamentations of swimming legs 1, 2, and 4, the proportions and armature of the exopod of the female leg (P) 5, among other characters. The specimens from Mexico have 1-2 long spines near the posteroventral margin of the anal somite; this character has been described only from a North African population. Our analysis supports the notion that this widespread pantropical species shows a considerable degree of variability in various characters. Since a clonal population of this parthenogenetic species could be established, molecular techniques are recommended to evaluate this variability and determine if E. grandidieri represents a species complex with morphologically similar taxa. The finding of E. grandidieri as an harpacticoid with high reproductive rates suggests that this copepod has an outstanding potential in aquaculture. |
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Elaphoidella grandidieri Copépodos Morfología animal |
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Gutiérrez Aguirre, Martha Angélica Doctora autora 14722 Suárez Morales, Eduardo Doctor autor 2036 Cervantes Martínez, Adrián Doctor autor 14987 Sarma, Nandini autor Sarma, S. S. S. Doctor autor 20232 |
| author_facet |
Gutiérrez Aguirre, Martha Angélica Doctora autora 14722 Suárez Morales, Eduardo Doctor autor 2036 Cervantes Martínez, Adrián Doctor autor 14987 Sarma, Nandini autor Sarma, S. S. S. Doctor autor 20232 |
| author_sort |
Gutiérrez Aguirre, Martha Angélica Doctora autora 14722 |
| title |
Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions |
| title_short |
Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions |
| title_full |
Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions |
| title_fullStr |
Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions |
| title_full_unstemmed |
Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions |
| title_sort |
morphology of elaphoidella grandidieri (guerne & richard, 1893) (copepoda, harpacticoida) from mexico with notes on fecundity in culture conditions |
| work_keys_str_mv |
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1806027961174851584 |
| spelling |
KOHA-OAI-ECOSUR:516002024-07-16T11:26:18ZMorphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions Gutiérrez Aguirre, Martha Angélica Doctora autora 14722 Suárez Morales, Eduardo Doctor autor 2036 Cervantes Martínez, Adrián Doctor autor 14987 Sarma, Nandini autor Sarma, S. S. S. Doctor autor 20232 textengSamples collected from ponds in central Mexico contained male and female specimens of the harpacticoid copepod Elaphoidella grandidieri (Guerne & Richard, 1893). Field-collected ovigerous females were transported to the laboratory where several isofemale lines were established. Cultures were established from a single female and maintained on a mono-algal diet in moderately hard water. Specimens of both sexes, particularly the less known males, were analysed morphologically and compared with records from different geographical regions. Differences among these populations are subtle and not geographically consistent. Variations were found in the relative length of setal elements and ornamentations of swimming legs 1, 2, and 4, the proportions and armature of the exopod of the female leg (P) 5, among other characters. The specimens from Mexico have 1-2 long spines near the posteroventral margin of the anal somite; this character has been described only from a North African population. Our analysis supports the notion that this widespread pantropical species shows a considerable degree of variability in various characters. Since a clonal population of this parthenogenetic species could be established, molecular techniques are recommended to evaluate this variability and determine if E. grandidieri represents a species complex with morphologically similar taxa. The finding of E. grandidieri as an harpacticoid with high reproductive rates suggests that this copepod has an outstanding potential in aquaculture.Des échantillons collectés dans des mares du centre du Mexique contenaient des spécimens mâles et femelles du copépode harpacticoïde Elaphoidella grandidieri (Guerne & Richard,1893). Des femelles ovigères collectées sur le terrain ont été transportées au laboratoire où plusieurs lignées isofemelles ont été établies. Les élevages ont été réalisés à partir d'une femelle unique et maintenus dans de l'eau moyennement dure avec un régime alimentaire mono-algue. Des spécimens des deux sexes, en particulier les mâles, moins connus, ont été analysés quant à leur morphologie et comparés avec les données de différentes régions géographiques. Les différences entre ces populations sont subtiles et ne sont pas cohérentes géographiquement. Des variations ont été trouvées dans la longueur relative des soies et des ornementations des pattes natatoires P1, P2 et P4, dans les proportions et l'armature de l'exopodite de la P5 femelle, parmi d'autres caractères. Les spécimens du Mexique ont 1-2 longues épines près du bord postéroventral du somite anal ; ce caractère a été décrit seulement d'une population nord-africaine. Notre analyse soutient la notion que cette espèce pantropicale largement répartie présente un degré considérable de variabilité pour différents caractères. Étant donné qu'une population clonale de cette espèce parthénogénétique pourrait être obtenue, des techniques moléculaires sont recommandées pour évaluer cette variabilité et déterminer si E. grandidieri représente un complexe d'espèces avec des taxons morphologiquement similaires. Le fait que E. grandidieri présente un taux de reproduction élevé suggère un potentiel remarquable pour l'aquaculture chez cette espèce.Samples collected from ponds in central Mexico contained male and female specimens of the harpacticoid copepod Elaphoidella grandidieri (Guerne & Richard, 1893). Field-collected ovigerous females were transported to the laboratory where several isofemale lines were established. Cultures were established from a single female and maintained on a mono-algal diet in moderately hard water. Specimens of both sexes, particularly the less known males, were analysed morphologically and compared with records from different geographical regions. Differences among these populations are subtle and not geographically consistent. Variations were found in the relative length of setal elements and ornamentations of swimming legs 1, 2, and 4, the proportions and armature of the exopod of the female leg (P) 5, among other characters. The specimens from Mexico have 1-2 long spines near the posteroventral margin of the anal somite; this character has been described only from a North African population. Our analysis supports the notion that this widespread pantropical species shows a considerable degree of variability in various characters. Since a clonal population of this parthenogenetic species could be established, molecular techniques are recommended to evaluate this variability and determine if E. grandidieri represents a species complex with morphologically similar taxa. The finding of E. grandidieri as an harpacticoid with high reproductive rates suggests that this copepod has an outstanding potential in aquaculture.Des échantillons collectés dans des mares du centre du Mexique contenaient des spécimens mâles et femelles du copépode harpacticoïde Elaphoidella grandidieri (Guerne & Richard,1893). Des femelles ovigères collectées sur le terrain ont été transportées au laboratoire où plusieurs lignées isofemelles ont été établies. Les élevages ont été réalisés à partir d'une femelle unique et maintenus dans de l'eau moyennement dure avec un régime alimentaire mono-algue. Des spécimens des deux sexes, en particulier les mâles, moins connus, ont été analysés quant à leur morphologie et comparés avec les données de différentes régions géographiques. Les différences entre ces populations sont subtiles et ne sont pas cohérentes géographiquement. Des variations ont été trouvées dans la longueur relative des soies et des ornementations des pattes natatoires P1, P2 et P4, dans les proportions et l'armature de l'exopodite de la P5 femelle, parmi d'autres caractères. Les spécimens du Mexique ont 1-2 longues épines près du bord postéroventral du somite anal ; ce caractère a été décrit seulement d'une population nord-africaine. Notre analyse soutient la notion que cette espèce pantropicale largement répartie présente un degré considérable de variabilité pour différents caractères. Étant donné qu'une population clonale de cette espèce parthénogénétique pourrait être obtenue, des techniques moléculaires sont recommandées pour évaluer cette variabilité et déterminer si E. grandidieri représente un complexe d'espèces avec des taxons morphologiquement similaires. Le fait que E. grandidieri présente un taux de reproduction élevé suggère un potentiel remarquable pour l'aquaculture chez cette espèce.Elaphoidella grandidieriCopépodosMorfología animalStudies on freshwater copepoda: a volume in honour of bernard dussart / by Danielle Defaye, Eduardo Suárez-Morales and J. Carel von Vaupel Klein (editors) ; with Victor Alekseev, ...[et al.] (advisory editors)Disponible para usuarios de ECOSUR con su clave de acceso |