The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront
The thermal tolerances and reproduction of Daphniopsis australis were investigated using a single clone under laboratory conditions. Based on survivorship, measurements of thermal tolerance were conducted using acute exposure within 24, 48 and 72 hours. The upper limit of tolerance was at 28°C, bu...
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| Format: | Article |
| Language: | English |
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Universiti Teknologi MARA, Perlis
2011
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| Online Access: | https://ir.uitm.edu.my/id/eprint/32136/ |
| _version_ | 1848807944811970560 |
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| author | Ismail, Hasnun Nita Jian, Guang Qin Seuront, Laurent |
| author_facet | Ismail, Hasnun Nita Jian, Guang Qin Seuront, Laurent |
| author_sort | Ismail, Hasnun Nita |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | The thermal tolerances and reproduction of Daphniopsis australis were investigated using a single clone under laboratory conditions. Based on survivorship, measurements of thermal tolerance were conducted using acute exposure within 24, 48 and 72 hours. The upper limit of tolerance was at 28°C, but animals successfully survived until the lowest temperature (4°C) regardless of exposure times. A minimum temperature increment of 6°C above the control temperature (22°C) was detrimental to survival while the optimal temperature of this species was detected from 4 to 26°C. Variation in pattern of reproduction was observed in the range of temperature from 16 to 25°C. The reproductive parameters including age at first reproduction (AFR), clutch number, egg development time (EDT) and total offspring production were significantly affected by temperature changes. Low and high temperature significantly delayed the age for first reproduction and reduced the clutch number. However, EDT and total offspring were negatively related with an increase in temperature. An extreme thermal condition was detected at 25°C where reproductive outputs were adversely affected. Our results suggest that D. australis is a eurythermal species, but a rapid increase of temperature could threaten its survival. Reproduction of this species is favourable in the narrow range of temperature with the most optimal temperature is likely at 20°C. This study contributes to the understanding of the impact of global warming on the sustainability of zooplankton fauna in arid temperate regions. |
| first_indexed | 2025-11-14T22:50:52Z |
| format | Article |
| id | uitm-32136 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T22:50:52Z |
| publishDate | 2011 |
| publisher | Universiti Teknologi MARA, Perlis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-321362022-12-29T02:17:17Z https://ir.uitm.edu.my/id/eprint/32136/ The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront jurnalintelek Ismail, Hasnun Nita Jian, Guang Qin Seuront, Laurent QR Microbiology Water. Aquatic microbiology The thermal tolerances and reproduction of Daphniopsis australis were investigated using a single clone under laboratory conditions. Based on survivorship, measurements of thermal tolerance were conducted using acute exposure within 24, 48 and 72 hours. The upper limit of tolerance was at 28°C, but animals successfully survived until the lowest temperature (4°C) regardless of exposure times. A minimum temperature increment of 6°C above the control temperature (22°C) was detrimental to survival while the optimal temperature of this species was detected from 4 to 26°C. Variation in pattern of reproduction was observed in the range of temperature from 16 to 25°C. The reproductive parameters including age at first reproduction (AFR), clutch number, egg development time (EDT) and total offspring production were significantly affected by temperature changes. Low and high temperature significantly delayed the age for first reproduction and reduced the clutch number. However, EDT and total offspring were negatively related with an increase in temperature. An extreme thermal condition was detected at 25°C where reproductive outputs were adversely affected. Our results suggest that D. australis is a eurythermal species, but a rapid increase of temperature could threaten its survival. Reproduction of this species is favourable in the narrow range of temperature with the most optimal temperature is likely at 20°C. This study contributes to the understanding of the impact of global warming on the sustainability of zooplankton fauna in arid temperate regions. Universiti Teknologi MARA, Perlis 2011-06 Article PeerReviewed text en https://ir.uitm.edu.my/id/eprint/32136/1/32136.pdf Ismail, Hasnun Nita and Jian, Guang Qin and Seuront, Laurent (2011) The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront. (2011) Jurnal Intelek <https://ir.uitm.edu.my/view/publication/Jurnal_Intelek.html>, 6 (1). pp. 70-76. ISSN 2231-7716 https://jurnalintelek.uitm.edu.my/index.php/main |
| spellingShingle | QR Microbiology Water. Aquatic microbiology Ismail, Hasnun Nita Jian, Guang Qin Seuront, Laurent The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront |
| title | The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront |
| title_full | The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront |
| title_fullStr | The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront |
| title_full_unstemmed | The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront |
| title_short | The survival and reproductive performance of Daphniopsis australis (Cladocera: Daphniidae) in response to temperature changes / Hasnun Nita Ismail, Jian Guang Qin and Laurent Seuront |
| title_sort | survival and reproductive performance of daphniopsis australis (cladocera: daphniidae) in response to temperature changes / hasnun nita ismail, jian guang qin and laurent seuront |
| topic | QR Microbiology Water. Aquatic microbiology |
| url | https://ir.uitm.edu.my/id/eprint/32136/ https://ir.uitm.edu.my/id/eprint/32136/ |