Observations on the Potato Tuber Moth

Langford, George S.; Cory, Ernest N.

doi:10.1093/jee/25.3.625

Cited by 25 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the life cycle of the moth has been studied in many countries (Langford & Cory 1932, Langford 1934, Attia & Mattar 1939, Mukherjee 1949, Lall 1949, Bartoloni 1951, Koizumi 1955, El Sherif 1961, Stanev & Kaitazov 1962, Doreste & Nieves 1968, Yathom 1968, Broodryk 1970, Salama et al 1973, AI-Ali et aI. 1975, Cardona & Oatman 1975, few studies have been made of infestation behaviour (Bald & Helson 1944, Meisner et aI.…”

Section: Received 17 August 1979mentioning

confidence: 99%

See 1 more Smart Citation

Bionomics of the potato tuber moth,Phthorimaea operculella(Lepidoptera: Gelechiidae), at Pukekohe

Foot

1979

New Zealand Journal of Zoology

View full text Add to dashboard Cite

The life cycle, behaviour, and population dynamics of Phthorimaea operculella Zeller were studied in the laboratory and in the field at Pukekohe, New Zealand.Populations displayed typical inverse relationships between stadial duration and temperature when reared on potatoes in cabinets which reproduced mean diurnal summer (28°e, 8 h; 17°, 16 h), spring/autumn (22", 8 h; 11 0, 16 h), and winter (17", 8 h; 6°, 16 h) temperatures at Pukekohe. Ranges of stadial duration were: egg, 5-25 days; larva, 18-60 days; prepupa, 2.5-18 days; pupa, 8-23 days; adult (pre-oviposition), 2-23 days. For a complete generation a mean of 8471 hour-degrees above lOoe was required. A 50% increase in the hour-degree requirement of the prepupa in the 'winter' regime indicated a lowering of intrinsic metabolic rate, and provided evidence for the prepupa being the main overwintering stage. The 'winter' regime bordered on the lower temperature threshold for adult function. The adult sex ratio of approximately 0.5 was not affected by temperature. Life tables constructed under the three temperature regimes showed Type II to Type III mortality curves for P. operculella. Within the cardinal limits for development, temperature-related mortality was a relatively constant function of time. Potential population multiplication rates were estimated to be 20.4, 39.6, and 0.98 times per generation for the 'summer', 'spring/autumn' and 'winter' regimes respectively.Behavioural studies in the laboratory showed that first-instar larvae were prevented from realChing tubers by as little as 0.5 cm soil coverage, and increased soil moisture enhanced this inhibition. Larvae forced to leave depleted foliage were unable to locate and infest developing tubers covered with more than I cm of soil. Accessibility of developing tubers to ovipositing adults was an important factor in tuber infestation in the field. Under normal cultivation methods 45% of the potato plant rhizosphere was found to be at high risk of infestation by potato tuber moth. This could be reduced to 25-39% by greater soil coverage, and to 7% by increasing soil moisture.The annual period of leaf mining activity regularly occurred between mid January and mid May, during which time larval densities were usually greater than 5 larvae/plant, rising to a peak of 50-150 larvae/plant during February. Foliage mining activity continued throughout the year at low levels. Seasonal variation in population density at Pukekohe was regulated largely by positive temperature influences. Adult population peaks closely coincided with those of the larval foliage mining population, but adults were not present over winter. Flight activity increa'sed with incr'ease in temperature, and was inhibited by wind speeds greater than 3 m/s. Adult sex ratio was positively correlated with population density of the preceding generation.The introduced parasite Apanteles subandinus Blanchard was well established at Pukekohe. Although parasitism levels rose to 45% in the 1973 overwintering tuber moth population, this was insufficient ...

show abstract

Section: Received 17 August 1979mentioning

confidence: 99%

“…data). Langford & Cory (1932) noted that "severe tuber moth years" occurred when unusually low rainfall coincided with higher-than-average temperatures, i.e., during summer drought.…”

Section: Parasitism By Apanteles Subandinusmentioning

confidence: 99%

Bionomics of the potato tuber moth,Phthorimaea operculella(Lepidoptera: Gelechiidae), at Pukekohe

Foot

1979

New Zealand Journal of Zoology

View full text Add to dashboard Cite

show abstract

“…Briese (1980) reports that a regression of development rate on temperature gave values for the lower threshold of development of 12°C for females and 12.4°C for males, which is slightly lower than the value we obtained for total development. Other studies report a lower developmental threshold of 13.3°C for a Peruvian population (Sporleder et al, 2004), 11.1°C for a fi eld population in North America (Langford & Cory, 1932) and 9.5°C for South African laboratory moths (Broodryk, 1971), which indicates that there is considerable variability between populations, possibly refl ecting local adaptation (Briese, 1980).…”

Section: Discussionmentioning

confidence: 98%

Effect of temperature on rate of development, survival and adult longevity of Phthorimaea operculella (Lepidoptera: Gelechiidae)

Andreadis¹,

Spanoudis²,

Zakka³

et al. 2017

Eur. J. Entomol.

View full text Add to dashboard Cite

“…The biology of P. operculella has been studied extensively all over the world (Langford 1932;Langford and Cory 1932;Attia and Mattar 1939;Lall 1949;Mukherjee 1949;Bartoloni 1951;Manickavasagar 1953;Koizumi 1955;El-Sherif 1961;Stanev and Kaitazov 1962;Doreste and Nieves 1968;Yathom 1968;Broodryk 1970Broodryk , 1971Santorini 1971;Ono et al 1972;Salama et al 1972;Ono and Saito 1973;Al-Ali et al 1975;Cardona and Oatman 1975;Fenemore 1977;Gubbaiah and Thontadarya 1977;Haines 1977;Fenemore 1978;Brits 1979;Fenemore 1979;Choe et al 1980;Shelton and Wyman 1980;Chauhan and Verma 1985;Briese 1986;Chauhan and Verma 1991;Trivedi and Rajagopal 1992;Rondon et al 2007;Dŏgramaci et al 2008). Other P. operculella work includes detailed morphological studies carried out by Mukherjee (1949) and continued by Bartoloni (1951) and Brits (1979); and mass-rearing methods (Finney et al 1944;Finney 1947;Platner and Oatman 1968;…”

mentioning

confidence: 99%

“…Van der Goot (1926) observed 14 days total larval period. Langford and Cory (1932) reported normal larval activity (i.e. feeding, molting) from 11.1 to 39.4°C.…”

mentioning

confidence: 99%

The Potato Tuberworm: A Literature Review of Its Biology, Ecology, and Control

2010

View full text Add to dashboard Cite

The potato tuberworm, Phthorimaea operculella (Zeller), is a worldwide pest of solanaceous crops especially devastating to potatoes. Adults mate and lay eggs in foliage or tubers throughout the growing season, preferring foliage over tubers. When foliage has naturally or artificially senesced and/or tubers are accessible, they deposit eggs in or near the eye buds. The larvae mine leaves, stems, and petioles causing irregular galleries, and excavate tunnels through tubers. Foliar damage to the potato crop usually does not result in significant yield losses but infested tubers may have reduced marketability and losses in storage may be up to 100% especially in non-refrigerated systems. The greatest risk of tuber damage occurs immediately before harvest while the crop is left in the field prior to digging; additional damage may occur in storage, if conditions are not maintained properly. Potatoes that are left in the field for any length of time can become infested. The pest is difficult to control and growers rely extensively on the use of insecticides and a variety of cultural practices. After harvest, the insect may continue to develop on tubers or volunteer plants remaining in the field as well as on other solanaceous plants. Incorporation of host plant resistance together with insecticides and appropriate biological and cultural practices may provide the best management options. This review addresses P. operculella bionomics, including origins, distribution, host range, life cycle and life stage behavior; seasonal dynamics; abiotic factors; cultural, biological, and chemical control methods; and host plant resistance.Resumen La palomilla de la papa Phthorimaea operculella (Zeller) es una plaga importante de cultivos de solanáceas en todo el mundo pero especialmente devastadora para la papa. Los adultos se aparean y ponen huevecillos en follaje o en tubérculo a lo largo del ciclo de cultivo, con preferencia de follaje sobre los tubérculos. Cuando el follaje senesce natural o artificialmente y/o los tubérculos están accesibles, las polillas depositan sus huevos en o cerca de los ojos de las yemas. Las larvas hacen minas en las hojas, los tallos y en peciolos causando galerías irregulares, y excavan túneles en los tubérculos. El daño al follaje del cultivo usualmente no resulta en pérdidas significativas de rendimiento, pero los tubérculos infestados pueden tener una reducción en el mercado y las pérdidas en el almacén pueden llegar hasta el 100% especialmente en sistemas no refrigerados. El mayor riesgo de daño en los tubérculos se presenta inmediatamente antes de la cosecha mientras el cultivo está en el campo antes de ser cosechado y transportado. Se puede presentar daño adicional en el almacén si las condiciones no se mantienen apropiadamente. Las papas que se quedan en el campo por tiempo prolongado pueden ser infestados. La plaga es difícil de controlar y los productores confían extensivamente en el uso de insecticidas y en una variedad de prácticas culturales. Después de la cosecha, el insecto pue...

show abstract

Observations on the Potato Tuber Moth

Cited by 25 publications

References 0 publications

Bionomics of the potato tuber moth,Phthorimaea operculella(Lepidoptera: Gelechiidae), at Pukekohe

Bionomics of the potato tuber moth,Phthorimaea operculella(Lepidoptera: Gelechiidae), at Pukekohe

Effect of temperature on rate of development, survival and adult longevity of Phthorimaea operculella (Lepidoptera: Gelechiidae)

The Potato Tuberworm: A Literature Review of Its Biology, Ecology, and Control

Contact Info

Product

Resources

About