Table 1.
The study groups, male introduction success, and data collection periods.
| Group demographic characteristics | Observation details | Introduction details | |||||
|---|---|---|---|---|---|---|---|
| ID | Size | Breeding females (Subjects) | Sex-ratio (♀:♂) | Period | Hours | Number of males successfully introduced | Male housing condition |
| Pre-introduction period | |||||||
| I | 84 | 40 | 20 | March 2017–August 2017 | 154 | 0 | Traditional |
| II | 64 | 30 | 30 | March 2017–September 2017 | 169 | 0 | Traditional |
| III* | 33 | 14 | 2 | March 2017–September 2017 | 165 | 3 | Traditional |
| IV* | 33 | 14 | 4.67 | March 2018–August 2018 | 166 | 4 | Enclosure |
| V | 41 | 14 | 14 | March 2018–August 2018 | 159 | 3 | Enclosure |
| VI | 44 | 18 | 18 | March 2018– September 2018 | 168 | 0 | Enclosure |
| VII | 60 | 37 | 18.5 | March 2019–September 2019 | 168 | 0 | Traditional |
| Post-introduction period | |||||||
| III | 33 | 14 | 4.67 | January 2018–June 2018 | 163 | ||
| IV | 33 | 14 | 3.5 | February 2019–September 2019 | 168 | ||
| V | 41 | 14 | 4.67 | February 2019–September 2019 | 166 | ||
*
The same group observed in sequential years.