Life history and demography of the predatory mite, Amblyseius longispinosus Evans
The life history and demography of Amblyseius longispinosus Evans were studied under laboratory conditions 25-28°C and 65-85% RH using the red form of the twospotted spider mite, Tetranychus urticae Koch complex as prey. The entire development from egg to adult averaged 102.5 h for both sexes with a...
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| Format: | Article |
| Language: | English |
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Springer
1994
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| Online Access: | http://psasir.upm.edu.my/id/eprint/113109/ http://psasir.upm.edu.my/id/eprint/113109/1/113109.pdf |
| _version_ | 1848866130344542208 |
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| author | Ibrahim, Yusof Palacio, Victoria B. |
| author_facet | Ibrahim, Yusof Palacio, Victoria B. |
| author_sort | Ibrahim, Yusof |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The life history and demography of Amblyseius longispinosus Evans were studied under laboratory conditions 25-28°C and 65-85% RH using the red form of the twospotted spider mite, Tetranychus urticae Koch complex as prey. The entire development from egg to adult averaged 102.5 h for both sexes with a survival rate of 90.0%. Immature females consumed more prey eggs than males, averaging 7.9 and 6.4 eggs/day, respectively. The embryonic development time for male eggs was longer (average 45.2 h) than for female eggs (average 42.6 h). The average duration of succeeding stages did not differ between the sexes: larva, 15.7; protonymph, 21.1; and deutonymph, 23.0 h. Larvae were not observed to feed. Statistically significant differences between sexes were noted with respect to consumption of the deutonymphs (female, average 4.0±0.2; male, average 2.9±0.3 eggs/day) but not of the protonymphs. Mating occurred on the same day as adult emergence and was repeated several times during the reproductive life. Egg laying started on the second day after emergence. Parameters relating to oviposition were: fecundity, gross (50.7) and net (43.3) eggs/female; hatchability, 99.6% (gross) and 99.5% (net); the oviposition lasted at most 28 days and showed a peak in the first week. Net reproductive rate (R0) was 36.7 female offspring/female/generation time (T) of 9.0 days. The sex ratio was biased toward the females (71.9%), while the intrinsic rate of increase (rm) was 0.4 with a doubling time (DT) of 1.7 days. Males lived longer (36 days) than females (30 days) with a LT50 for males of 26 days and for females of 22 days. |
| first_indexed | 2025-11-15T14:15:42Z |
| format | Article |
| id | upm-113109 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:15:42Z |
| publishDate | 1994 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1131092025-01-15T06:21:28Z http://psasir.upm.edu.my/id/eprint/113109/ Life history and demography of the predatory mite, Amblyseius longispinosus Evans Ibrahim, Yusof Palacio, Victoria B. The life history and demography of Amblyseius longispinosus Evans were studied under laboratory conditions 25-28°C and 65-85% RH using the red form of the twospotted spider mite, Tetranychus urticae Koch complex as prey. The entire development from egg to adult averaged 102.5 h for both sexes with a survival rate of 90.0%. Immature females consumed more prey eggs than males, averaging 7.9 and 6.4 eggs/day, respectively. The embryonic development time for male eggs was longer (average 45.2 h) than for female eggs (average 42.6 h). The average duration of succeeding stages did not differ between the sexes: larva, 15.7; protonymph, 21.1; and deutonymph, 23.0 h. Larvae were not observed to feed. Statistically significant differences between sexes were noted with respect to consumption of the deutonymphs (female, average 4.0±0.2; male, average 2.9±0.3 eggs/day) but not of the protonymphs. Mating occurred on the same day as adult emergence and was repeated several times during the reproductive life. Egg laying started on the second day after emergence. Parameters relating to oviposition were: fecundity, gross (50.7) and net (43.3) eggs/female; hatchability, 99.6% (gross) and 99.5% (net); the oviposition lasted at most 28 days and showed a peak in the first week. Net reproductive rate (R0) was 36.7 female offspring/female/generation time (T) of 9.0 days. The sex ratio was biased toward the females (71.9%), while the intrinsic rate of increase (rm) was 0.4 with a doubling time (DT) of 1.7 days. Males lived longer (36 days) than females (30 days) with a LT50 for males of 26 days and for females of 22 days. Springer 1994 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/113109/1/113109.pdf Ibrahim, Yusof and Palacio, Victoria B. (1994) Life history and demography of the predatory mite, Amblyseius longispinosus Evans. Experimental and Applied Acarology, 18 (6). pp. 361-369. ISSN 0168-8162; eISSN: 1572-9702 https://link.springer.com/article/10.1007/BF00116317?error=cookies_not_supported&code=96f6f0ac-ae7e-4e49-a3e6-4a6fbc165e43 10.1007/bf00116317 |
| spellingShingle | Ibrahim, Yusof Palacio, Victoria B. Life history and demography of the predatory mite, Amblyseius longispinosus Evans |
| title | Life history and demography of the predatory mite, Amblyseius longispinosus Evans |
| title_full | Life history and demography of the predatory mite, Amblyseius longispinosus Evans |
| title_fullStr | Life history and demography of the predatory mite, Amblyseius longispinosus Evans |
| title_full_unstemmed | Life history and demography of the predatory mite, Amblyseius longispinosus Evans |
| title_short | Life history and demography of the predatory mite, Amblyseius longispinosus Evans |
| title_sort | life history and demography of the predatory mite, amblyseius longispinosus evans |
| url | http://psasir.upm.edu.my/id/eprint/113109/ http://psasir.upm.edu.my/id/eprint/113109/ http://psasir.upm.edu.my/id/eprint/113109/ http://psasir.upm.edu.my/id/eprint/113109/1/113109.pdf |