Epigrapsus notatus (Liu and Jeng, 2005)
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publication ID |
https://doi.org/ 10.6620/ZS.2023.62-22 |
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persistent identifier |
https://treatment.plazi.org/id/03E64D7F-1703-2C69-BA40-FC39930F97A8 |
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treatment provided by |
Felipe |
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scientific name |
Epigrapsus notatus |
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A total of 107 and 207 ovigerous female E. notatus were observed migrating to the sea in 2020 and 2021, respectively ( Fig. 3 View Fig ). The majority of the migration occurred at the onset of the dry season with a major movement of ovigerous females in late September and late October, but a minor movement in late November ( Fig. 3 View Fig ).
The migration exhibited a lunar rhythm. The peak migration occurred about 20 days after the new moon (20.5 ± 1.3 days in 2020; 20.0 ± 1.3 days in 2021) during the intermediate amplitude diurnal/nocturnal high tides ( Table 1; Fig. 3A, 3B View Fig ) and lasted for about one week. Based on the data collected in 2021, about one and a half times as many females migrated in late September (n = 124) than in October (n = 80) ( Fig. 3B View Fig ). The daily number of seaward migrating females varied with the lunar age. The highest number of daily migrating females was 27 and 39 crabs occurring on 7 October 2020 and 26 September 2021, respectively ( Fig. 3A, 3B View Fig ).
Timing of larval release
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