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| Autores principales: | , , , , , , |
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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Scientific reports
2025
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| Materias: | |
| Acceso en línea: | https://pubmed.ncbi.nlm.nih.gov/40628796/ |
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| _version_ | 1868266179259269120 |
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| author | Kim, Myung Joon Kim, Ji Seong Lee, Yoon Ji Park, Joo Myun Kwak, Seok Nam Shin, Donghoon Lee, Sang Heon |
| author_facet | Kim, Myung Joon Kim, Ji Seong Lee, Yoon Ji Park, Joo Myun Kwak, Seok Nam Shin, Donghoon Lee, Sang Heon Kim, Myung Joon Kim, Ji Seong Lee, Yoon Ji Park, Joo Myun Kwak, Seok Nam Shin, Donghoon Lee, Sang Heon |
| collection | PubMed - marine biology |
| contents | Dietary ecology of the endangered seahorse Hippocampus haema unveiled through stable isotope analysis. Kim, Myung Joon Kim, Ji Seong Lee, Yoon Ji Park, Joo Myun Kwak, Seok Nam Shin, Donghoon Lee, Sang Heon Animals Smegmamorpha Endangered Species Carbon Isotopes Nitrogen Isotopes Seasons Diet Republic of Korea Bayes Theorem Food Chain Understanding the dietary ecology of endangered species is essential for effective conservation. This study explores the trophic ecology of Hippocampus haema, an endangered seahorse species in South Korea, using stable isotope analysis (SIA). We assessed the feasibility of using the distal tail tip, which is rich in muscle tissue, for SIA to minimize specimen loss. Although this method has not been proven to be less invasive than fin clipping, it offers a practical alternative for small-sized or juvenile seahorses for which fin clipping provides insufficient tissue for analysis. A preliminary analysis confirmed that isotope values were consistent across different tail sections, validating the use of tail tips in dietary studies. We conducted two phases of analysis: (1) seasonal and size-based variation in δC and δN values using 36 specimens collected across four seasons (2015-2016), and (2) estimation of dietary contributions using a Bayesian mixing model (MixSIAR) based on δC and δN values of H. haema and six potential prey taxa collected in 2020. Seasonal variation was observed in δN values, with higher values in July, potentially reflecting breeding season dietary shifts. A significant positive correlation between isotopic values and body size suggests size-related changes in prey selection, though trophic position remained stable. MixSIAR results indicated that slower, smaller taxa such as Caprella, Harpacticoida, and Limnoria were the primary prey items, regardless. These findings provide insights into the feeding ecology and habitat reliance of H. haema, guiding conservation strategies to protect the species and its Sargassum-dominated habitat. |
| format | Artículo científico |
| id | pubmed_40628796 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Scientific reports |
| record_format | pubmed |
| spellingShingle | Dietary ecology of the endangered seahorse Hippocampus haema unveiled through stable isotope analysis. Kim, Myung Joon Kim, Ji Seong Lee, Yoon Ji Park, Joo Myun Kwak, Seok Nam Shin, Donghoon Lee, Sang Heon Animals Smegmamorpha Endangered Species Carbon Isotopes Nitrogen Isotopes Seasons Diet Republic of Korea Bayes Theorem Food Chain Dietary ecology of the endangered seahorse Hippocampus haema unveiled through stable isotope analysis. Kim, Myung Joon Kim, Ji Seong Lee, Yoon Ji Park, Joo Myun Kwak, Seok Nam Shin, Donghoon Lee, Sang Heon Animals Smegmamorpha Endangered Species Carbon Isotopes Nitrogen Isotopes Seasons Diet Republic of Korea Bayes Theorem Food Chain Understanding the dietary ecology of endangered species is essential for effective conservation. This study explores the trophic ecology of Hippocampus haema, an endangered seahorse species in South Korea, using stable isotope analysis (SIA). We assessed the feasibility of using the distal tail tip, which is rich in muscle tissue, for SIA to minimize specimen loss. Although this method has not been proven to be less invasive than fin clipping, it offers a practical alternative for small-sized or juvenile seahorses for which fin clipping provides insufficient tissue for analysis. A preliminary analysis confirmed that isotope values were consistent across different tail sections, validating the use of tail tips in dietary studies. We conducted two phases of analysis: (1) seasonal and size-based variation in δC and δN values using 36 specimens collected across four seasons (2015-2016), and (2) estimation of dietary contributions using a Bayesian mixing model (MixSIAR) based on δC and δN values of H. haema and six potential prey taxa collected in 2020. Seasonal variation was observed in δN values, with higher values in July, potentially reflecting breeding season dietary shifts. A significant positive correlation between isotopic values and body size suggests size-related changes in prey selection, though trophic position remained stable. MixSIAR results indicated that slower, smaller taxa such as Caprella, Harpacticoida, and Limnoria were the primary prey items, regardless. These findings provide insights into the feeding ecology and habitat reliance of H. haema, guiding conservation strategies to protect the species and its Sargassum-dominated habitat. |
| title | Dietary ecology of the endangered seahorse Hippocampus haema unveiled through stable isotope analysis. |
| topic | Animals Smegmamorpha Endangered Species Carbon Isotopes Nitrogen Isotopes Seasons Diet Republic of Korea Bayes Theorem Food Chain |
| url | https://pubmed.ncbi.nlm.nih.gov/40628796/ |