Responses to salinity in the littoral earthworm genus Pontodrilus
Abstract The cosmopolitan littoral earthworm Pontodrilus litoralis is distributed in tropical and sub-tropical coastal habitats, whereas P. longissimus is reported only in the Thai-Malay coastal line. In the present study, we examined the difference in salinity effect on the survival rate, wet weigh...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-12-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-26099-w |
| _version_ | 1797977450797334528 |
|---|---|
| author | Teerapong Seesamut Beewah Ng Chirasak Sutcharit Ratmanee Chanabun Somsak Panha |
| author_facet | Teerapong Seesamut Beewah Ng Chirasak Sutcharit Ratmanee Chanabun Somsak Panha |
| author_sort | Teerapong Seesamut |
| collection | DOAJ |
| description | Abstract The cosmopolitan littoral earthworm Pontodrilus litoralis is distributed in tropical and sub-tropical coastal habitats, whereas P. longissimus is reported only in the Thai-Malay coastal line. In the present study, we examined the difference in salinity effect on the survival rate, wet weight (hereafter weight) change, behaviour, and osmolality of these two Pontodrilus species. A 28 d exposure to varying salinity concentration (0–50 ppt) revealed that P. litoralis is able to survive over a wide salinity range than P. longissimus, with the latter species exhibiting a low survival rate over the same salinity range. During short-term exposure (0–96 h) to a salinity of less than 30 ppt, P. litoralis exhibited weight gain and this was significant in the first 12 h of exposure. However, P. longissimus gained weight when exposed to salinity at under 10 ppt in the first 72 h of exposure. The two species of Pontodrilus behaved differently when exposed to different salinities. The coelomic fluid osmolarity of Pontodrilus was related to the exposure medium and was mostly maintained as hyperosmotic to the external medium over the range of salinities tested. This study shows how two different species of the littoral earthworm genus Pontodrilus respond to a change in salinity, which may explain their dispersal pattern and shape their distribution pattern throughout Southeast Asia. |
| first_indexed | 2024-04-11T05:07:06Z |
| format | Article |
| id | doaj.art-10bf15b1ebf14deabd270d7ce8eed806 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T05:07:06Z |
| publishDate | 2022-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-10bf15b1ebf14deabd270d7ce8eed8062022-12-25T12:16:10ZengNature PortfolioScientific Reports2045-23222022-12-0112111010.1038/s41598-022-26099-wResponses to salinity in the littoral earthworm genus PontodrilusTeerapong Seesamut0Beewah Ng1Chirasak Sutcharit2Ratmanee Chanabun3Somsak Panha4Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn UniversityAnimal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn UniversityAnimal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn UniversityProgram in Animal Science, Faculty of Agricultural Technology, Sakon Nakhon Rajabhat UniversityAnimal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn UniversityAbstract The cosmopolitan littoral earthworm Pontodrilus litoralis is distributed in tropical and sub-tropical coastal habitats, whereas P. longissimus is reported only in the Thai-Malay coastal line. In the present study, we examined the difference in salinity effect on the survival rate, wet weight (hereafter weight) change, behaviour, and osmolality of these two Pontodrilus species. A 28 d exposure to varying salinity concentration (0–50 ppt) revealed that P. litoralis is able to survive over a wide salinity range than P. longissimus, with the latter species exhibiting a low survival rate over the same salinity range. During short-term exposure (0–96 h) to a salinity of less than 30 ppt, P. litoralis exhibited weight gain and this was significant in the first 12 h of exposure. However, P. longissimus gained weight when exposed to salinity at under 10 ppt in the first 72 h of exposure. The two species of Pontodrilus behaved differently when exposed to different salinities. The coelomic fluid osmolarity of Pontodrilus was related to the exposure medium and was mostly maintained as hyperosmotic to the external medium over the range of salinities tested. This study shows how two different species of the littoral earthworm genus Pontodrilus respond to a change in salinity, which may explain their dispersal pattern and shape their distribution pattern throughout Southeast Asia.https://doi.org/10.1038/s41598-022-26099-w |
| spellingShingle | Teerapong Seesamut Beewah Ng Chirasak Sutcharit Ratmanee Chanabun Somsak Panha Responses to salinity in the littoral earthworm genus Pontodrilus Scientific Reports |
| title | Responses to salinity in the littoral earthworm genus Pontodrilus |
| title_full | Responses to salinity in the littoral earthworm genus Pontodrilus |
| title_fullStr | Responses to salinity in the littoral earthworm genus Pontodrilus |
| title_full_unstemmed | Responses to salinity in the littoral earthworm genus Pontodrilus |
| title_short | Responses to salinity in the littoral earthworm genus Pontodrilus |
| title_sort | responses to salinity in the littoral earthworm genus pontodrilus |
| url | https://doi.org/10.1038/s41598-022-26099-w |
| work_keys_str_mv | AT teerapongseesamut responsestosalinityinthelittoralearthwormgenuspontodrilus AT beewahng responsestosalinityinthelittoralearthwormgenuspontodrilus AT chirasaksutcharit responsestosalinityinthelittoralearthwormgenuspontodrilus AT ratmaneechanabun responsestosalinityinthelittoralearthwormgenuspontodrilus AT somsakpanha responsestosalinityinthelittoralearthwormgenuspontodrilus |