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Biologia de Polyphagotarsonemus latus (Banks, 1904) (Acari: Tarsonemidae) em algodoeiro

Authors: Vieira, Marineide Rosa; Chiavegato, Luiz Gonzaga;

Biologia de Polyphagotarsonemus latus (Banks, 1904) (Acari: Tarsonemidae) em algodoeiro

Abstract

No estudo da biologia de Polyphagotarsonemus latus em algodoeiro (Gossypium hirsutum L.), cultivar IAC-20, foram utilizados discos de folhas obtidos da primeira ou segunda folha não-cotiledonar de plântulas cultivadas em vasos e colocados sobre uma camada de algodão umedecido com água destilada. Os ensaios foram conduzidos a 28,5 ± 0,3°C, umidade relativa de 71,0 ± 2,6% e fotofase de 14 horas. O período de ovo a adulto teve a duração de 4,1 ± 0,1 dias em fêmeas e de 4,1 ± 0,3 dias em machos, com sobrevivência de 91,2%. Após um período de pré-oviposição de 1,1 ± 0,2 dias, as fêmeas depositaram 4,5 ± 0,9 ovos por dia durante 6,8 ± 1,3 dias, totalizando 29,6 ± 7,3 ovos por fêmea. A longevidade foi de 10,0 ± 1,5 dias nas fêmeas e 8,8 ± 1,1 dias nos machos. A razão intrínseca de aumento (rm) foi de 0,323; a razão finita de aumento (λ) de 1,38 indivíduos por fêmea por dia; o tempo médio de uma geração (T) de 9,54 dias; e a taxa líquida de reprodução (Ro) de 21,73.

Leaf discs obtained from the first or second non-cotyledonal leaf of cotton (Gossypium hirsutum L.) seedlings were used for the study of the biology of Polyphagotarsonemus latus on cotton IAC-20 cultivar. Seedlings were grown in pots and placed on a layer of cotton moistened with distilled water. The assays were carried out at 28.5 ± 0.3°C, relative humidity of 71.0 ± 2.6% and a 14 h photophase. The duration of immature phases was 4.1 ± 0.1 days for females and 4.1 ± 0.3 days for males, with a survival of 91.2%. After a pre-oviposition period of 1.1 ± 0.2 days, the females deposited 4.5 ± 0.9 eggs per day during 6.8 ± 1.3 days, i.e., 29.6 ± 7.3 eggs per female. The longevity was 10.0 ± 1.5 days for females and 8.8 ± 1.1 days for males. The intrinsic rate of increase (rm) was 0.323; finite rate of increase (λ) 1.38 individual per female per day; mean generation time (T) 9.54 days and net reproductive rate (Ro) 21.73.

Country
Brazil
Keywords

Net reproductive rate, Broad mite, Biological development

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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