Chemosensory cues of predators and competitors influence search for refuge in fruit by the coconut mite Aceria guerreronis

2018 ◽  
Vol 74 (3) ◽  
pp. 249-259 ◽  
Author(s):  
Érica C. Calvet ◽  
Debora B. Lima ◽  
José W. S. Melo ◽  
Manoel G. C. Gondim
Keyword(s):  
Aceria Guerreronis ◽  
Coconut Mite

scholarly journals Coconut destiny after the invasion of Aceria guerreronis (Acari: Eriophyidae) in India*

Zoosymposia ◽  
2011 ◽  
Vol 6 (1) ◽  
pp. 160-169 ◽  
Author(s):  
M. A. HAQ
Keyword(s):  
Management Practices ◽  
Critical Assessment ◽  
Bakery Products ◽  
Aceria Guerreronis ◽  
Agricultural Income ◽  
Northern India ◽  
Coconut Mite ◽  
Farming Community ◽  
The People ◽  
Considerable Damage

The coconut mite, Aceria guerreronis Keifer, has emerged as a common menace to most of the coconut plantations in India. After its first upsurge in Kerala at the end of the 1990´s, the mite has spread to many states in southern and northern India, causing considerable damage. Coconut provides one third of the agricultural income in the regions in which it is grown and more than 10 million people are dependent on this cash crop directly or indirectly through coconut-based industries like coir, copra, oil, honey, furniture, handicrafts, beverages, bakery products and so on. The economic instability of the coconut farming community and the people employed in coconut-based industries rank the highest order. A critical assessment of the various problems created by A. guerreronis in the agricultural economy of India is presented in order to supplement data on crop loss through nut malformation, nut fall, loss in fibre and copra. Varietal differences in susceptibility of the plant and future strategies in terms of management practices for an early control of the mite are discussed, and suggestions for future activities to alleviate mite damage are presented.

The invasive coconut mite Aceria guerreronis (Acari: Eriophyidae): origin and invasion sources inferred from mitochondrial (16S) and nuclear (ITS) sequences

2005 ◽  
Vol 95 (6) ◽  
pp. 505-516 ◽  
Author(s):  
D. Navia ◽  
G.J. de Moraes ◽  
G. Roderick ◽  
M. Navajas
Keyword(s):  
Sequence Data ◽  
Common Source ◽  
Aceria Guerreronis ◽  
Dna Sequence Data ◽  
Coconut Mite ◽  
Ocean Region ◽  
Invasion Routes ◽  
History Of ◽  
Nuclear Its ◽  
Production Areas

AbstractOver the past 30 years the coconut mite Aceria guerreronis Keifer has emerged as one of the most important pests of coconut and has recently spread to most coconut production areas worldwide. The mite has not been recorded in the Indo-Pacific region, the area of origin of coconut, suggesting that it has infested coconut only recently. To investigate the geographical origin, ancestral host associations, and colonization history of the mite, DNA sequence data from two mitochondrial and one nuclear region were obtained from samples of 29 populations from the Americas, Africa and the Indo-ocean region. Mitochondrial DNA 16S ribosomal sequences were most diverse in Brazil, which contained six of a total of seven haplotypes. A single haplotype was shared by non-American mites. Patterns of nuclear ribosomal internal transcribed spacer (ITS) variation were similar, again with the highest nucleotide diversity found in Brazil. These results suggest an American origin of the mite and lend evidence to a previous hypothesis that the original host of the mite is a non-coconut palm. In contrast to the diversity in the Americas, all samples from Africa and Asia were identical or very similar, consistent with the hypothesis that the mite invaded these regions recently from a common source. Although the invasion routes of this mite are still only partially reconstructed, the study rules out coconut as the ancestral host of A. guerreronis, thus prompting a reassessment of efforts using quarantine and biological control to check the spread of the pest.

scholarly journals Geographical and seasonal distribution of the coconut mite, Aceria guerreonis (Acari: Eriophyidae), in Puerto Rico and Florida, USA

1969 ◽  
Vol 74 (3) ◽  
pp. 237-251
Author(s):  
Forrest W. Howard ◽  
Edwin Abreu-Rodríguez ◽  
Harold A. Denmark
Keyword(s):  
Puerto Rico ◽  
Florida Keys ◽  
Mite Species ◽  
Planting Density ◽  
Population Fluctuations ◽  
Aceria Guerreronis ◽  
Coconut Mite ◽  
Amblyseius Largoensis ◽  
Almost All ◽  
First Time

The coconut mite, Aceria guerreronis Keifer, was collected for the first time in Puerto Rico in 1977. It was reported for the first time in Florida in 1984, although it may have been present in the state since the 1950s. On the basis of damage symptoms observed during 1986-87, the coconut mite was distributed in almost all plantings of coconut in Puerto Rico. The percentage of trees with symptoms was highest on the west coast, where planting density is highest. During the same period, the percentage of coconut palms infested with coconut mites varied from 66 to 98% at different sites on the Florida Keys. On the Florida mainland, the percentage of trees with coconut mite damage was usually less than 7%. At several sites on the Florida mainland revisited in 1988, coconut mites had spread locally. At Playa Tres Hermanos in Añasco, Puerto Rico, and Bahía Honda Key, Florida, where monthly sampling was conducted, coconut mite population fluctuations did not appear to be strongly associated with dry and wet periods or mean daily temperatures. A list of mite species associated with the coconut mite was reported. It included four species reported for the first time in Puerto Rico. In Puerto Rico, Bdella distincta preyed on both coconut mite and Steneotarsonemus furcatus. In Florida, Amblyseius largoensis, Neoseiulos mumai, and N. paspalivorus were observed preying on coconut mites. However, these predators apparently do not significantly affect coconut mite populations. Tarsonemus sp. inflicted damage on the coconut similar to that caused by the coconut mite. Coconut mites beneath tepals of coconuts exposed to —1.5° C for 5.5 hours were not affected adversely by this treatment. Some eggs remained viable after exposure to —3° C up to 5 hours. Coconut mites survived at 5° C for 10 days. Thus, coconut mites are capable of surviving most winters on the Florida mainland.

scholarly journals Postembryonic development of the coconut mite, Aceria guerreronis, on coconut in Kerala, India*

Zoosymposia ◽  
2011 ◽  
Vol 6 (1) ◽  
pp. 68-71 ◽  
Author(s):  
T. R. SOBHA ◽  
M. A. HAQ
Keyword(s):  
Average Length ◽  
Postembryonic Development ◽  
Optimum Temperature ◽  
Single Female ◽  
Aceria Guerreronis ◽  
Quiescent Period ◽  
Coconut Mite ◽  
Adult Females ◽  
Immature Development ◽  
Longitudinal Slit

The coconut mite, Aceria guerreronis Keifer (Eriophyidae), has invaded and caused significant problems to most of the coconut plantations in southern India. Several factors appear favorable for the invasion of the mite, especially continuous availability of young fruits suitable for attack and optimum temperature most of the year. This study was conducted to evaluate details of the morphology of the immature stages and the development of A. guerreronis on coconut. It was conducted in a laboratory at 28 ± 2°C and 80% RH. The eggs were small (66 ± 4 and 41 ± 2ìm for long and short axes), and a single female laid an average of 66 ± 4 eggs during 15 days of oviposition period. Incubation period lasted 2.5–3.5 days. Hatching was completed in about 30 minutes. The larva emerged through a longitudinal slit on the surface of the egg.Almost transparent and sluggish and measuring 87 ± 12ìm long, it started feeding soon after emergence. The active period of the larva lasted 1.5–2.5 days, being followed by a quiescent period that lasted about one day. The nymph measured 176 ± 11ìm in length; the active and quiescent periods of this stage lasted 2 and 0.5–1.5 days, respectively. Adult females had an average length of 224 ± 9ìm. Eight to ten days were necessary for immature development.

scholarly journals Coconut mite, Acathrix trymatus (Keifer)

EDIS ◽  
1969 ◽  
Vol 2004 (5) ◽  
Author(s):  
W. C. Welbourn
Keyword(s):  
Cooperative Extension ◽  
The Philippines ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Aceria Guerreronis ◽  
University Of Florida ◽  
Coconut Mite ◽  
Agricultural Sciences ◽  
Short Seta

Acathrix trymatus was originally described by Keifer (1962b) from specimens collected in the folds of newly emerging coconut fronds in the Philippines. Keifer's generic name, Acathrix, means "short seta" for the minute scapular setae on the prodorsal sclerite of this species (Keifer 1962b). Briones (1963) investigated A. trymatus and three other eriophyid species on Philippine coconut palms and found their feeding did little damage and did not transmit cadang-cadang disease. This document is EENY-194 (originally published as DPI Entomology Circular 383), one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: January 2001.  EENY-194/IN351: Coconut mite, Aceria guerreronis (Keifer) (ufl.edu)

scholarly journals Functional and numerical responses of the predatory mite Amblyseius aerialis (Acari: Phytoseiidae) to Aceria guerreronis (Acari: Eriophyidae)

Acarologia ◽  
2022 ◽  
Vol 62 (1) ◽  
pp. 27-35
Author(s):  
Camila Tavares Ferreira ◽  
Aloyséia Cristina da Silva Noronha ◽  
Eduardo Pereira Souza Neto ◽  
Raimundo Parente De Oliveira ◽  
Paulo Manoel Pontes Lins ◽  
...  
Keyword(s):  
Cocos Nucifera ◽  
Predatory Mite ◽  
Food Sources ◽  
Physical Barrier ◽  
Aceria Guerreronis ◽  
Coconut Tree ◽  
Coconut Mite ◽  
The Mean ◽  
Pest Mite ◽  
Cocos Nucifera L

The coconut mite, Aceria guerreronis Keifer, is one of the main pests of the coconut tree (Cocos nucifera L.) worldwide. Its control is mainly based on the use of acaricides. However, due to the habitat of this pest mite, which is protected by fruit bracts that act as a physical barrier, chemical control is often inefficient. Thus, natural enemies have been studied as an alternative to acaricides. We evaluated the functional and numerical responses of Amblyseius aerialis (Muma) to increasing densities of A. guerreronis (40, 80, 160, 240 and 360) and additionally the oviposition rates of the phytoseiid A. aerialis over 11 days on different food sources: coconut pollen, A. guerreronis and a mix of pollen and A. guerreronis. Our results showed that Amblyseius aerialis showed a type III functional response, where prey consumption increasing as the density of A. guerreronis increased, with a maximum consumption of up to 175 prey per predator. All the prey densities allowed female oviposition. The number of eggs laid by A. aerialis increased with increasing prey density and stabilized between 240 and 360 A. guerreronis individuals, with an average oviposition of 1.7 eggs/female. Furthermore, our results showed that all the food sources (coconut pollen, A. guerreronis and a mix of pollen and A. guerreronis) supported oviposition. The mean oviposition was approximately 1.5 eggs/female on all the food sources. Our study suggests that A. aerialis can be effective in the biological control of A. guerreronis. However, further studies are needed to investigate whether A. aerialis can explore the habitat of A. guerreronis and if that prey can support the development of immature stages and the reproduction of A. aerialis.

scholarly journals Essential Oils of Aromatic and Medicinal Plants as Botanical Biocide for Management of Coconut Eriophyid Mite (Aceria guerreronisKeifer)

2011 ◽  
Vol 2011 ◽  
pp. 1-5
Author(s):  
Susmita Patnaik ◽  
Kadambini Rout ◽  
Sasmita Pal ◽  
Prasanna Kumar Panda ◽  
Partha Sarathi Mukherjee ◽  
...  
Keyword(s):  
Essential Oils ◽  
Laboratory Experiments ◽  
Field Trials ◽  
Herbal Extracts ◽  
Aceria Guerreronis ◽  
Eriophyid Mite ◽  
Coconut Mite ◽  
Infestation Intensity ◽  
Chemical Pesticide ◽  
Plant Sources

The present study investigated the efficiency of essential oils extracted from different aromatic and medicinal plant sources onAceria guerreronisKeifer, one of the serious pests of coconut. The essential oils and the herbal extracts were prepared in two different formulations and were used both in laboratory and field conditions to assess the efficiency of the formulations against the coconut mite infestation. The field trial results showed that reduction in infestation intensity was found to vary between 73.44% and 44.50% at six different locations of trial farms with an average of 64.18% after four spells of treatment. The average number of live mites was higher in the third month old nuts both in the control as well as the treated nut samples. The laboratory experiments on the efficacy of botanical biocide showed that the time taken for dehydration and shriveling of body cells took only sixty seconds. The multilocational field trials revealed the overall efficiency of the biocide to significantly control the eriophyid mite in coconut crop in an ecofriendly and sustainable manner without adopting any chemical pesticide.

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