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Phyllocnistis citrella

December 07, 2023

The citrus leafminer (Phyllocnistis citrella) is a moth of the family Gracillariidae. It is also known as CLM in agriculture. It was described by Henry Tibbats Stainton from India in 1856.[1][2] It was first found in Florida, United States, in 1993,[3] but is now found all over the world, including Argentina, Australia, Brazil, China, Corsica, Costa Rica, Cuba, India, Israel, Madeira, Malaysia, Mauritius, Mexico, the Philippines, South Africa, Spain, Sri Lanka and other parts of the United States.

Phyllocnistis citrella
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Infraorder:
Heteroneura
Family:
Gracillariidae
Genus:
Phyllocnistis
Species:
P. citrella
Binomial name
Phyllocnistis citrella
Stainton, 1856

The wingspan is about 5 millimetres (0.20 in)</ref>.

The larvae are considered a serious agricultural pest on Citrus species, such as Aegle marmelos, Atalantia, Citrofortunella microcarpa, Citrus limon, Citrus paradisi, Citrus maxima, Fortunella margarita, Murraya paniculata and Poncirus trifoliate. Larvae have also been recorded on Garcinia mangostana, Pongamia pinnata, Alseodaphne semecarpifolia, Loranthus and Jasminum sambac. They mine the leaves of their host plant. The mine consists of a long epidermal corridor with a well-marked central frass line. The mine is mostly lower-surface, but sometimes upper-surface, and rarely on the rind of the developing fruit. Citrus leaf miner larvae are thus protected from many topic insecticide treatments. Pupation takes place in a chamber at the end of the corridor, under an overturned part of the leaf margin.

Citrus leafminer distribution edit

Citrus leafminer (CLM) are native to Asia and are found throughout the continent and beyond. Japan, the Philippines, New Guinea, India and Taiwan are some of the countries in which the pest is distributed. The pest is not exclusively found in these countries having spread to nearly every citrus growing area in the world. Recent spread into North and South America was reported in the early 1990s. This is especially important because major citrus growing operations are found in Brazil and the US. These two countries account for half of the world's citrus production.[citation needed]

CLM management edit

Insecticides edit

Insecticide applications are among the most effective methods available for managing CLM. Yet because of the CLM's ability to "mine" leaves insecticides are not entirely effective when dealing with CLM infestations. Cultural control, such as basic citrus tree upkeep and management, are essential to keeping mature citrus trees healthy and capable at combating CLM infestations.[4] While a number of insecticides are used to manage CLM, concerns linger over the type and amount to apply to CLM orchards and nurseries. Some concerns include: wide-spectrum insecticides targeting more than just CLM, killing more than a single insect species this can have adverse effects on beneficial insects that prey on CLM and even beneficial pollinators like bees; insecticide resistance has been reported in certain citrus growing areas; use near residential areas. Insecticides used to manage this pest include but not limited to the following:

Active Ingredient Trade Names
Abamectin Agri-Mek 0.15 EC
Acetamiprid Assail 70 WP
Diflubenzuron Micromite 80WGS
Thiamethoxam Platinum 75 SG
Spinosad SpinTor 2SC
Spinetoram Delegate WG
Methoxyfenozide Intrepid 2F
Imidacloprid Admire Pro, 2F

Monitoring and mass trapping edit

Traps specifically designed to lure CLM are also deployed as a mechanism to both monitor and reduce CLM population, although during high infestation situations, traps alone are not recommended without additional measures. They are, however, a good indicator of CLM population levels, which can help in developing effective management plans.

Adult citrus leafminers' mating communication is mediated by sex pheromones emitted by the adult females. A new lure that is environmentally friendly, species-specific, and emits the naturally occurring citrus leafminer pheromone has been developed targeting the management of this pest.[5] The lure attracts adult male citrus leafminers to an insect pheromone trap over a period of 4 to 8 weeks, allowing users to monitor for its presence, determine the relative population density in the field, or use it to actually control populations by mass trapping the males.

Mating disruption edit

The CLM sex pheromone can also be used in the field without a trap, as a mating disruption to control and manage the pest. The mating disruption strategy is an environmentally friendly tactic that causes males to fail to find mates, reducing encounters between male and female CLM, leading to less fertilized eggs. The formulation SPLAT CLM,[6] which combines nature-identical pheromone with SPLAT, has been registered with the US EPA to control the citrus leafminer. Unlike wide spectrum insecticides, which may impact beneficial insects (such as bees) or may cause insecticide resistance build-up, these pheromone based strategies rarely cause the development of resistance and reduce the use of conventional pesticides, thus avoiding pollution.

In the case of the citrus leafminer, the female moth produces at least two volatile compounds, a diene (two double bonds: Z,Z)-7,11-hexadecadienal) and a triene (three double bonds: (Z,Z,E)-7,11,13-hexadecatrienal) in a 3:1 triene:diene ratio[7] that are both necessary and sufficient to attract males.[8] It was determined that a 3:1 triene:diene blend of the synthetic pheromone was optimal for attracting males to an adhesive trap in the field in Florida. This is the same 3:1 blend that was first isolated from the female pheromone glands. However, the question of what blend (the "natural" 3:1 blend or some other "unnatural" ratio) was best for mating disruption in general was addressed for this species using geometric multivariate experiment designs combined with response surface modeling. The triene component alone achieved maximum disruption of attraction of males.[9]

Attracticides edit

Advances in attractant formulations includes addition of an insecticide ingredient along with pheromone ingredients in order to attract CLM and kill the pest when it contacts the point source.[10]

References edit

  1. ^ Phyllocnistis citrella
  2. ^ "Citrus leafminer - Phyllocnistis citrella Stainton". entnemdept.ufl.edu. Retrieved 15 December 2019.
  3. ^ "Citrus Leafminer, Phyllocnistis citrella". Center For Invasive Species Research. Retrieved 15 December 2019.
  4. ^ Stansly, A; Qureshi, J A; Stelinski, L L; Rogers, M E. "2018-2019 Florida Citrus Production Guide: Asian Citrus Psyllid and Citrus Leafminers" (PDF). Institute of Food and Agricultural Sciences. Retrieved 15 December 2019.
  5. ^ "Next Generation Insect Controls". ISCA. Retrieved 15 December 2019.
  6. ^ "Citrus Leafminer". ISCA. Retrieved 15 December 2019.
  7. ^ Moreira, J.A., S. McElfresh, S., and J.G. Millar. 2006. Identification, synthesis, and field testing of the sex pheromone of the citrus leafminer, Phyllocnistis citrella. Journal of Chemical Ecology 32:169-194
  8. ^ Lapointe, S.L., D.G. Hall, Y. Murata, A.L. Parra-Pedrazzoli, J.M.S. Bento, E. Vilela and W. S. Leal. 2006. Field evaluation of a synthetic female sex pheromone for the leafmining moth Phyllocnistis citrella (Lepidoptera: Gracillariidae) in Florida citrus. Florida Entomologist 89:274-276
  9. ^ Lapointe, S., L. Stelinksi, T. Evens, R. Niedz, D. Hall and A. Mafra-Neto. 2009. Sensory imbalance as mating disruption mechanism in a moth: elucidation by multivariate geometric designs and response surface models. Journal of Chemical Ecology 35: 896-903
  10. ^ . Archived from the original on 2012-03-31. Retrieved 2012-03-16.

Gallery edit

  •  

    Egg

  •  

    Larva

  •  

    Larva close-up

  •  

    Damage

  •  

    Damage

  •  

    Pupa

External links edit

 
Wikimedia Commons has media related to Phyllocnistis citrella.
  • Center for Invasive Species - Citrus Leafminer
  • citrus leafmioner on the UF / IFAS Featured Creatures Web site
  • ISCA Technologies Integrated Pest Management (IPM) Tools & Solutions Pheromone for mating disruption of Citrus Leaf Miners
  • Integrated Pest Management Solutions For Sustainable Agriculture | ISCA Pheromone Traps for the monitoring and mass trapping of Citrus Leaf Miners

December 07, 2023
phyllocnistis, citrella, citrus, leafminer, moth, family, gracillariidae, also, known, agriculture, described, henry, tibbats, stainton, from, india, 1856, first, found, florida, united, states, 1993, found, over, world, including, argentina, australia, brazil. The citrus leafminer Phyllocnistis citrella is a moth of the family Gracillariidae It is also known as CLM in agriculture It was described by Henry Tibbats Stainton from India in 1856 1 2 It was first found in Florida United States in 1993 3 but is now found all over the world including Argentina Australia Brazil China Corsica Costa Rica Cuba India Israel Madeira Malaysia Mauritius Mexico the Philippines South Africa Spain Sri Lanka and other parts of the United States Phyllocnistis citrellaScientific classificationKingdom AnimaliaPhylum ArthropodaClass InsectaOrder LepidopteraInfraorder HeteroneuraFamily GracillariidaeGenus PhyllocnistisSpecies P citrellaBinomial namePhyllocnistis citrellaStainton 1856The wingspan is about 5 millimetres 0 20 in lt ref gt The larvae are considered a serious agricultural pest on Citrus species such as Aegle marmelos Atalantia Citrofortunella microcarpa Citrus limon Citrus paradisi Citrus maxima Fortunella margarita Murraya paniculata and Poncirus trifoliate Larvae have also been recorded on Garcinia mangostana Pongamia pinnata Alseodaphne semecarpifolia Loranthus and Jasminum sambac They mine the leaves of their host plant The mine consists of a long epidermal corridor with a well marked central frass line The mine is mostly lower surface but sometimes upper surface and rarely on the rind of the developing fruit Citrus leaf miner larvae are thus protected from many topic insecticide treatments Pupation takes place in a chamber at the end of the corridor under an overturned part of the leaf margin Contents 1 Citrus leafminer distribution 2 CLM management 2 1 Insecticides 2 2 Monitoring and mass trapping 2 3 Mating disruption 2 4 Attracticides 3 References 4 Gallery 5 External linksCitrus leafminer distribution editCitrus leafminer CLM are native to Asia and are found throughout the continent and beyond Japan the Philippines New Guinea India and Taiwan are some of the countries in which the pest is distributed The pest is not exclusively found in these countries having spread to nearly every citrus growing area in the world Recent spread into North and South America was reported in the early 1990s This is especially important because major citrus growing operations are found in Brazil and the US These two countries account for half of the world s citrus production citation needed CLM management editInsecticides edit Insecticide applications are among the most effective methods available for managing CLM Yet because of the CLM s ability to mine leaves insecticides are not entirely effective when dealing with CLM infestations Cultural control such as basic citrus tree upkeep and management are essential to keeping mature citrus trees healthy and capable at combating CLM infestations 4 While a number of insecticides are used to manage CLM concerns linger over the type and amount to apply to CLM orchards and nurseries Some concerns include wide spectrum insecticides targeting more than just CLM killing more than a single insect species this can have adverse effects on beneficial insects that prey on CLM and even beneficial pollinators like bees insecticide resistance has been reported in certain citrus growing areas use near residential areas Insecticides used to manage this pest include but not limited to the following Active Ingredient Trade NamesAbamectin Agri Mek 0 15 ECAcetamiprid Assail 70 WPDiflubenzuron Micromite 80WGSThiamethoxam Platinum 75 SGSpinosad SpinTor 2SCSpinetoram Delegate WGMethoxyfenozide Intrepid 2FImidacloprid Admire Pro 2FMonitoring and mass trapping edit Traps specifically designed to lure CLM are also deployed as a mechanism to both monitor and reduce CLM population although during high infestation situations traps alone are not recommended without additional measures They are however a good indicator of CLM population levels which can help in developing effective management plans Adult citrus leafminers mating communication is mediated by sex pheromones emitted by the adult females A new lure that is environmentally friendly species specific and emits the naturally occurring citrus leafminer pheromone has been developed targeting the management of this pest 5 The lure attracts adult male citrus leafminers to an insect pheromone trap over a period of 4 to 8 weeks allowing users to monitor for its presence determine the relative population density in the field or use it to actually control populations by mass trapping the males Mating disruption edit The CLM sex pheromone can also be used in the field without a trap as a mating disruption to control and manage the pest The mating disruption strategy is an environmentally friendly tactic that causes males to fail to find mates reducing encounters between male and female CLM leading to less fertilized eggs The formulation SPLAT CLM 6 which combines nature identical pheromone with SPLAT has been registered with the US EPA to control the citrus leafminer Unlike wide spectrum insecticides which may impact beneficial insects such as bees or may cause insecticide resistance build up these pheromone based strategies rarely cause the development of resistance and reduce the use of conventional pesticides thus avoiding pollution In the case of the citrus leafminer the female moth produces at least two volatile compounds a diene two double bonds Z Z 7 11 hexadecadienal and a triene three double bonds Z Z E 7 11 13 hexadecatrienal in a 3 1 triene diene ratio 7 that are both necessary and sufficient to attract males 8 It was determined that a 3 1 triene diene blend of the synthetic pheromone was optimal for attracting males to an adhesive trap in the field in Florida This is the same 3 1 blend that was first isolated from the female pheromone glands However the question of what blend the natural 3 1 blend or some other unnatural ratio was best for mating disruption in general was addressed for this species using geometric multivariate experiment designs combined with response surface modeling The triene component alone achieved maximum disruption of attraction of males 9 Attracticides edit Advances in attractant formulations includes addition of an insecticide ingredient along with pheromone ingredients in order to attract CLM and kill the pest when it contacts the point source 10 References edit Phyllocnistis citrella Citrus leafminer Phyllocnistis citrella Stainton entnemdept ufl edu Retrieved 15 December 2019 Citrus Leafminer Phyllocnistis citrella Center For Invasive Species Research Retrieved 15 December 2019 Stansly A Qureshi J A Stelinski L L Rogers M E 2018 2019 Florida Citrus Production Guide Asian Citrus Psyllid and Citrus Leafminers PDF Institute of Food and Agricultural Sciences Retrieved 15 December 2019 Next Generation Insect Controls ISCA Retrieved 15 December 2019 Citrus Leafminer ISCA Retrieved 15 December 2019 Moreira J A S McElfresh S and J G Millar 2006 Identification synthesis and field testing of the sex pheromone of the citrus leafminer Phyllocnistis citrella Journal of Chemical Ecology 32 169 194 Lapointe S L D G Hall Y Murata A L Parra Pedrazzoli J M S Bento E Vilela and W S Leal 2006 Field evaluation of a synthetic female sex pheromone for the leafmining moth Phyllocnistis citrella Lepidoptera Gracillariidae in Florida citrus Florida Entomologist 89 274 276 Lapointe S L Stelinksi T Evens R Niedz D Hall and A Mafra Neto 2009 Sensory imbalance as mating disruption mechanism in a moth elucidation by multivariate geometric designs and response surface models Journal of Chemical Ecology 35 896 903 Advances in SPLAT CLM MalEx rein in citrus pest the Grower Archived from the original on 2012 03 31 Retrieved 2012 03 16 Gallery edit nbsp Egg nbsp Larva nbsp Larva close up nbsp Damage nbsp Damage nbsp PupaExternal links edit nbsp Wikimedia Commons has media related to Phyllocnistis citrella Center for Invasive Species Citrus Leafminer citrus leafmioner on the UF IFAS Featured Creatures Web site ISCA Technologies Integrated Pest Management IPM Tools amp Solutions Pheromone for mating disruption of Citrus Leaf Miners Integrated Pest Management Solutions For Sustainable Agriculture ISCA Pheromone Traps for the monitoring and mass trapping of Citrus Leaf Miners Retrieved from https en wikipedia org w index php title Phyllocnistis citrella amp oldid 1160379115, wikipedia, wiki, book, books, library,

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