Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874
A study was conducted to investigate the effects of different food concentrations consisting of Nannochloropsis oculata (4 × 102, 4 × 104, 4 × 106 cells ml− 1 and control) on male and ephippia production in a tropical cladoceran, Moina micrura. The highest number of males (186.7 ± 13.4 males l− 1) w...
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| Format: | Article |
| Language: | English |
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Elsevier
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/29454/ http://psasir.upm.edu.my/id/eprint/29454/1/Effect%20of%20food%20density%20on%20male%20appearance%20and%20ephippia%20production%20in%20a%20tropical%20cladoceran%2C%20Moina%20micrura%20Kurz%2C%201874.pdf |
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| author | Osman, Mohd Azuraidi Md. Yusoff, Fatimah Shamsudin, Mariana Nor Abdul Rahim, Raha Alekseev, Victor R. Matias-Peralta, Hazel Monica |
| author_facet | Osman, Mohd Azuraidi Md. Yusoff, Fatimah Shamsudin, Mariana Nor Abdul Rahim, Raha Alekseev, Victor R. Matias-Peralta, Hazel Monica |
| author_sort | Osman, Mohd Azuraidi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A study was conducted to investigate the effects of different food concentrations consisting of Nannochloropsis oculata (4 × 102, 4 × 104, 4 × 106 cells ml− 1 and control) on male and ephippia production in a tropical cladoceran, Moina micrura. The highest number of males (186.7 ± 13.4 males l− 1) was produced in cultures fed with 4 × 102 cells ml− 1 of N. oculata (FC 3) when the population density reached > 1600 individuals l− 1. Similarly, the highest total mean number of ephippia (160.0 ± 0.0 ephippia l− 1) was achieved in M. micrura culture supplied with 4 × 102 cells ml− 1 of N. oculata (FC 3). The second highest ephippia density was found in M. micrura cultures fed with 4 × 104 cells ml− 1 of N. oculata (FC 2) which produced a mean total of 93.3 ± 13.4 ephippia l− 1 in a population density of > 3000 individuals l− 1. However, with a population density of > 4000 individuals l− 1, but fed with the highest food concentration of 4 × 106 cells ml− 1 N. oculata (FC 1), no ephippia was produced although males were present in the culture. This study illustrates that ephippia were produced in high density cultures with the presence of males and insufficient food supply. Crowding could trigger the production of males, but was not an adequate stress factor for inducing the formation of ephippia. Similarly, food limitation alone did not induce the production of males and ephippia without crowding. |
| first_indexed | 2025-11-15T09:02:09Z |
| format | Article |
| id | upm-29454 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:02:09Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-294542020-07-22T01:10:46Z http://psasir.upm.edu.my/id/eprint/29454/ Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874 Osman, Mohd Azuraidi Md. Yusoff, Fatimah Shamsudin, Mariana Nor Abdul Rahim, Raha Alekseev, Victor R. Matias-Peralta, Hazel Monica A study was conducted to investigate the effects of different food concentrations consisting of Nannochloropsis oculata (4 × 102, 4 × 104, 4 × 106 cells ml− 1 and control) on male and ephippia production in a tropical cladoceran, Moina micrura. The highest number of males (186.7 ± 13.4 males l− 1) was produced in cultures fed with 4 × 102 cells ml− 1 of N. oculata (FC 3) when the population density reached > 1600 individuals l− 1. Similarly, the highest total mean number of ephippia (160.0 ± 0.0 ephippia l− 1) was achieved in M. micrura culture supplied with 4 × 102 cells ml− 1 of N. oculata (FC 3). The second highest ephippia density was found in M. micrura cultures fed with 4 × 104 cells ml− 1 of N. oculata (FC 2) which produced a mean total of 93.3 ± 13.4 ephippia l− 1 in a population density of > 3000 individuals l− 1. However, with a population density of > 4000 individuals l− 1, but fed with the highest food concentration of 4 × 106 cells ml− 1 N. oculata (FC 1), no ephippia was produced although males were present in the culture. This study illustrates that ephippia were produced in high density cultures with the presence of males and insufficient food supply. Crowding could trigger the production of males, but was not an adequate stress factor for inducing the formation of ephippia. Similarly, food limitation alone did not induce the production of males and ephippia without crowding. Elsevier 2013 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/29454/1/Effect%20of%20food%20density%20on%20male%20appearance%20and%20ephippia%20production%20in%20a%20tropical%20cladoceran%2C%20Moina%20micrura%20Kurz%2C%201874.pdf Osman, Mohd Azuraidi and Md. Yusoff, Fatimah and Shamsudin, Mariana Nor and Abdul Rahim, Raha and Alekseev, Victor R. and Matias-Peralta, Hazel Monica (2013) Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874. Aquaculture, 412-413. pp. 131-135. ISSN 0044-8486; ESSN: 1873-5622 https://www.sciencedirect.com/science/article/pii/S0044848613003086?via%3Dihub#! 10.1016/j.aquaculture.2013.06.034 |
| spellingShingle | Osman, Mohd Azuraidi Md. Yusoff, Fatimah Shamsudin, Mariana Nor Abdul Rahim, Raha Alekseev, Victor R. Matias-Peralta, Hazel Monica Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874 |
| title | Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874 |
| title_full | Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874 |
| title_fullStr | Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874 |
| title_full_unstemmed | Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874 |
| title_short | Effect of food density on male appearance and ephippia production in a tropical cladoceran, Moina micrura Kurz, 1874 |
| title_sort | effect of food density on male appearance and ephippia production in a tropical cladoceran, moina micrura kurz, 1874 |
| url | http://psasir.upm.edu.my/id/eprint/29454/ http://psasir.upm.edu.my/id/eprint/29454/ http://psasir.upm.edu.my/id/eprint/29454/ http://psasir.upm.edu.my/id/eprint/29454/1/Effect%20of%20food%20density%20on%20male%20appearance%20and%20ephippia%20production%20in%20a%20tropical%20cladoceran%2C%20Moina%20micrura%20Kurz%2C%201874.pdf |