On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of Mexico
The lack of knowledge on the morphological variability in hydrozoan populations has resulted in numerous misidentifications over history. Cladonema radiatum Dujardin, 1843 is characterized by presenting different morphologies in different localities of the world, which has caused many taxonomic con...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2022-12-01
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| Series: | Ciencias Marinas |
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| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3312 |
| _version_ | 1797279555389489152 |
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| author | José María Ahuatzin-Hernández Jesús Andrés Canul-Cabrera Uriel Ordóñez-López Lorena Violeta León-Deniz |
| author_facet | José María Ahuatzin-Hernández Jesús Andrés Canul-Cabrera Uriel Ordóñez-López Lorena Violeta León-Deniz |
| author_sort | José María Ahuatzin-Hernández |
| collection | DOAJ |
| description |
The lack of knowledge on the morphological variability in hydrozoan populations has resulted in numerous misidentifications over history. Cladonema radiatum Dujardin, 1843 is characterized by presenting different morphologies in different localities of the world, which has caused many taxonomic confusions within the group. In this study, the morphological variability in a population of C. radiatum is analyzed. The material came from a coastal lagoon in the southern Gulf of Mexico. The samplings were carried out for 3 months in 2017. Salinity, dissolved oxygen, and temperature were recorded at each sampling site. Cladonema radiatum was more abundant and bigger when the lagoon showed the lowest levels of salinity. Six different morphologies were recognized. The presence of gelatinous papillae on the abaxial surface of marginal bulbs and an abaxial arrangement of nematocysts in the shortest branches of the tentacles are features recorded for the first time in the species. These considerations enrich the taxonomic description of C. radiatum and contribute to the knowledge on the taxonomy of Hydrozoa in Mexico. The taxonomy of Cladonema continues to be confusing, and the present work sets a basis for further integrative studies clarifying the morphological boundaries of the genus. However, only integrative works based on the morphology and molecular analyses of the species would be able to decode its cryptic nature.
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| first_indexed | 2024-03-07T16:27:35Z |
| format | Article |
| id | doaj.art-725840074e85491a95418d92e05ca354 |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:27:35Z |
| publishDate | 2022-12-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-725840074e85491a95418d92e05ca3542024-03-03T17:30:54ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532022-12-0148110.7773/cm.y2022.3312On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of MexicoJosé María Ahuatzin-Hernández0Jesús Andrés Canul-Cabrera1Uriel Ordóñez-López2Lorena Violeta León-Deniz3Centro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalUniversidad Autónoma de Yucatán The lack of knowledge on the morphological variability in hydrozoan populations has resulted in numerous misidentifications over history. Cladonema radiatum Dujardin, 1843 is characterized by presenting different morphologies in different localities of the world, which has caused many taxonomic confusions within the group. In this study, the morphological variability in a population of C. radiatum is analyzed. The material came from a coastal lagoon in the southern Gulf of Mexico. The samplings were carried out for 3 months in 2017. Salinity, dissolved oxygen, and temperature were recorded at each sampling site. Cladonema radiatum was more abundant and bigger when the lagoon showed the lowest levels of salinity. Six different morphologies were recognized. The presence of gelatinous papillae on the abaxial surface of marginal bulbs and an abaxial arrangement of nematocysts in the shortest branches of the tentacles are features recorded for the first time in the species. These considerations enrich the taxonomic description of C. radiatum and contribute to the knowledge on the taxonomy of Hydrozoa in Mexico. The taxonomy of Cladonema continues to be confusing, and the present work sets a basis for further integrative studies clarifying the morphological boundaries of the genus. However, only integrative works based on the morphology and molecular analyses of the species would be able to decode its cryptic nature. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3312taxonomyphenotypic plasticitycoastal lagoonAnthoathecataevolution |
| spellingShingle | José María Ahuatzin-Hernández Jesús Andrés Canul-Cabrera Uriel Ordóñez-López Lorena Violeta León-Deniz On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of Mexico Ciencias Marinas taxonomy phenotypic plasticity coastal lagoon Anthoathecata evolution |
| title | On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of Mexico |
| title_full | On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of Mexico |
| title_fullStr | On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of Mexico |
| title_full_unstemmed | On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of Mexico |
| title_short | On the morphological variations in a population of Cladonema radiatum (Hydrozoa: Cladonematidae): New evidence from the southern Gulf of Mexico |
| title_sort | on the morphological variations in a population of cladonema radiatum hydrozoa cladonematidae new evidence from the southern gulf of mexico |
| topic | taxonomy phenotypic plasticity coastal lagoon Anthoathecata evolution |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3312 |
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