The establishment of an invasive pest mite, Raoiella indica, affects mite abundance and diversity on coconut plants

2020 ◽  
Vol 25 (5) ◽  
pp. 881-894
Author(s):  
Maria Edvânia Neves Barros ◽  
Debora B. Lima ◽  
Jairo A. Mendes ◽  
Manoel G. C. Gondim Jr. ◽  
José Wagner Da Silva Melo
Keyword(s):  
Invasive Species ◽  
Keystone Species ◽  
Invasive Pest ◽  
Ecosystem Structure ◽  
Feeding Mode ◽  
Phytoseiid Mites ◽  
Red Palm Mite ◽  
Raoiella Indica ◽  
Pest Mite ◽  
Abundance And Diversity

The introduction and establishment of an invasive species in a new habitat represents a major threat to biodiversity and ecosystem structure. A recent example of a mite that has become an invasive species is the red palm mite, Raoiella indica Hirst (Acari: Tenuipalpidae). After its introduction in the Americas, this species has considerably expanded the number of hosts and has been reported as a key pest of some of these. In the present study we investigated the possibility of mitefauna alteration on coconut leaflets (abundance and diversity) mediated by the introduction and establishment of R. indica. A survey was conducted over a period of 1 year in two areas of coconut cultivation: one infested and one free of R. indica. The results of the present study suggest that the introduction of R. indica modifies the mitefauna existing in coconut leaflets. Differences were detected in the abundance and diversity of mites at the level of the taxonomic categories (family and species) and at the level of the trophic groups (predators, herbivores and mites with undefined feeding mode). Additionally, in plants infested by the invasive species, a similar pattern was observed between the fluctuation of the phytoseiid mites and other tenuipalpid mites. In these plants, the density of the tenuipalpid mites (including R. indica) was also the variable that most contributed to explain the fluctuation of phytoseiid mites. This suggests that the invasive species, R. indica, acts as a keystone species, structuring the mitefauna in coconut plants.

scholarly journals When Wolves Recolonize: Indirect Effects on the Small and Medium-Sized Mammal Community

2002 ◽  
Vol 26 ◽  
pp. 35-37
Author(s):  
Brian Miller ◽  
Hank Harlow
Keyword(s):  
Keystone Species ◽  
Natural Disturbance ◽  
Statistical Technique ◽  
Trophic Levels ◽  
Genetic Identification ◽  
Conservation Strategies ◽  
Ecosystem Structure ◽  
Large Carnivores ◽  
Abundance And Diversity ◽  
Indirect Impacts

The abundance and diversity of mammals will be greatly affected by a number of factors, including plant productivity, climate, natural disturbance, and disease. Of particular interest to conservation strategies, there is little known about the ecological role that carnivores play in maintaining ecosystem structure. Large carnivores were essentially eliminated from much of their range during the last century. Yet, a growing body of experimental evidence indicates that top carnivores are keystone species, and they play important roles in maintaining the health of Nature. The predatory activities of large carnivores produce effects that ripple through the trophic levels of an ecosystem and affect organisms that seem distantly removed, ecologically and taxonomically. But, few studies have examined the indirect impacts of predation across those trophic levels. Such studies have been deemed a high priority in the Greater Yellowstone Ecosystem. Presently, we are assessing the abundance of selected species of mammals at sites representing five major vegetation types found in the Grand Teton National Park. The five vegetation sites are sampled in areas with and without wolves. The size range of these mammals extends from voles/mice to coyotes. Small rodents are being assessed through standard capture/recapture techniques using Sherman traps. Carnivores are being estimated by genetic identification of scat. That method is non-invasive, and by walking transects two times, we can essentially estimate populations sizes using the Lincoln-Peterson statistical technique. Mammals that can not be easily trapped or identified through scat will be followed over time using indices of abundance.

scholarly journals Raoiella indica (Prostigmata: Tenuipalpidae): The Red Palm Mite: A Potential Invasive Pest of Palms and Bananas and Other Tropical Crops of Florida

EDIS ◽  
2006 ◽  
Vol 2006 (27) ◽  
Author(s):  
Jorge E. Peña ◽  
Catharine M. Mannion ◽  
Forrest W. Howard ◽  
Marjorie A. Hoy
Keyword(s):  
Life Cycle ◽  
Natural Enemies ◽  
Chemical Control ◽  
Host Plants ◽  
Invasive Pest ◽  
Red Palm Mite ◽  
Tropical Crops ◽  
Important Pest ◽  
Raoiella Indica ◽  
The Caribbean

ENY-837, an 8-page illustrated fact sheet by J. E. Peña, C. M. Mannion, F. W. Howard and M. A. Hoy, describes this important pest of coconut fruit in many tropical countries, with recent findings in the Caribbean. Damage, description of stages, life cycle, seasonality, dispersal, host plants, chemical control, natural enemies, pathogens, and detection are discussed. Includes references and table of host plants. Published by the UF Department of Entomology and Nematology, November 2006.

Efficacy of Amblyseius largoensis (Muma) as a biocontrol agent of the red palm mite Raoiella indica (Acari: Tenuipalpidae)

2021 ◽  
Vol 49 (1) ◽  
pp. 103-111
Author(s):  
Vanessa de Araujo Lira ◽  
Luis Oswaldo Viteri Jumbo ◽  
Giselle Santos de Freitas ◽  
Adriano Soares Rêgo ◽  
Andréia Serra Galvão ◽  
...  
Keyword(s):  
Biocontrol Agent ◽  
Red Palm Mite ◽  
Raoiella Indica ◽  
Amblyseius Largoensis

4. Communities

2020 ◽  
pp. 48-72
Author(s):  
Jaboury Ghazoul
Keyword(s):  
Biological System ◽  
Keystone Species ◽  
Living System ◽  
Ecosystem Structure ◽  
Ecological Communities ◽  
Cooperative Relationships ◽  
Collaborative Interactions ◽  
Energy Transfers ◽  
Great Insight ◽  
System Components

‘Communities’ begins by looking at mutualisms, collaborative interactions between species, and goes on to explore ecosystem structure and change. True mutualism is rare, and cooperative relationships easily become exploitative. Entire communities can depend on a ‘keystone’ species, the loss of which has impacts that cascade across the biological system. Succession is the sequential development of increasingly complex ecological communities. Raymond Lindeman’s great insight was to interpret complex ecosystems as flows of energy and matter between living and non-living system components. Successional processes, ecosystem structures, and energy transfers all arise from the myriad of antagonistic and mutualistic interactions among individual organisms.

scholarly journals Trophic niches of benthic crustaceans in the Pechora Sea suggest that the invasive snow crab Chionoecetes opilio could be an important competitor

Polar Biology ◽  
2020 ◽  
Author(s):  
Anna Gebruk ◽  
Anna K. Zalota ◽  
Polina Dgebuadze ◽  
Yulia Ermilova ◽  
Vassily A. Spiridonov ◽  
...  
Keyword(s):  
Invasive Species ◽  
Stable Isotope ◽  
Integrated Approach ◽  
Trophic Niche ◽  
Snow Crab ◽  
Ecosystem Structure ◽  
Spider Crab ◽  
Chionoecetes Opilio ◽  
Trophic Niches ◽  
Prey Items

AbstractExpanding human activities alongside climate change, the introduction of invasive species and water contamination pose multiple threats to the unique marine ecosystems of the Pechora Sea in the Russian Arctic. Baseline data on biodiversity and responses to environmental change are urgently needed. Benthic decapod crustaceans are globally distributed and play an important role in fisheries, yet their roles in food webs are less understood. In this study, we used an integrated approach combining stomach content analysis and stable isotope analyses (δ13C and δ15N) to examine the trophic niches of three decapod species in the Pechora Sea including the invasive snow crab Chionoecetes opilio and two species of native decapods, the spider crab Hyas araneus and the hermit crab Pagurus pubescens. Stomach contents of 75 decapods were analysed (C. opilion = 23; H. araneusn = 9; P. pubescensn = 43), and 20 categories of prey items were identified with the most frequently occurring prey items being bivalve molluscs (Ciliatocardium ciliatum, Ennucula tenuis, Macoma calcarea), polychaetes, crustaceans and plant debris. Bayesian ellipse analyses of stable isotope signatures (n = 40) revealed that C. opilio displays an overlapping trophic niche with the two native decapods, providing direct evidence that the invader likely competes for food resources with both H. araneus and P. pubescens. As such, the presence of this invasive species could hold important consequences for trophic interactions, benthic ecosystem functioning and biodiversity. Microplastics were also found to be a likely stressor on this ecosystem, as 28% of all stomachs contained digested microplastics among other items. Long-term studies of benthic ecosystem structure and functioning are now needed to more fully understand the extent to which this new competitor may alter the future biodiversity of the Pechora Sea alongside the additional stressor of digested plastics.

A review of the natural enemies of the red palm mite, Raoiella indica (Acari: Tenuipalpidae)

2011 ◽  
Vol 57 (3-4) ◽  
pp. 347-360 ◽  
Author(s):  
Daniel Carrillo ◽  
J. Howard Frank ◽  
Jose Carlos V. Rodrigues ◽  
Jorge E. Peña
Keyword(s):  
Natural Enemies ◽  
Red Palm Mite ◽  
Raoiella Indica

scholarly journals Comparison of the bacterial abundance and diversity in the Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae) between both sexes

2019 ◽  
Author(s):  
Chunhui Guo ◽  
Xin Peng ◽  
Xialin Zheng ◽  
Xiaoyun Wang ◽  
Ruirui Wang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Illumina Miseq ◽  
Invasive Pest ◽  
Operational Taxonomic Units ◽  
Adult Females ◽  
Comprehensive Comparison ◽  
Leptocybe Invasa ◽  
Sex Regulation ◽  
Abundance And Diversity ◽  
Dominant Bacteria

Background. Insects harbor a myriad of microorganisms, many of which can affect the sex ratio and manipulate the reproduction of the host. Leptocybe invasa is an invasive pest that causes serious damage to eucalyptus plantations, and both female-biased sex ratios and thelytokous parthenogenesis in L. invasa contribute to the rapid invasion and fast growth of the population. However, the interior bacterial composition and abundance of L. invasa and the differences between both sexes remain unclear. Results. The Illumina MiSeq platform was used to compare the composition of the bacterial community in adult females and males by sequencing with variation in the V3-V4 region of the 16S ribosomal DNA gene. The results showed that 1320 operational taxonomic units (OTUs) were obtained in total. These OTUs were annotated into 24 phyla, 71 classes, 130 orders, 245 families and 501 genera. At the genus level, the dominant bacteria in females and males was Rickettsia and Rhizobium, respectively. Conclusion. The bacteria living in L. invasa adult females and males had high diversity. There were differences in the bacterial community in L. invasa between both sexes, and the bacterial diversity in male adults was more abundant than that in female adults. This study presents a comprehensive comparison of bacterial communities living in L. invasa between sexes, which plays a significant role in reproductive strategy, sex regulation and the invasive mechanism of L. invasa and provides a basis for follow-up studies on the coevolution and interaction between L. invasa and its predominant bacteria.

scholarly journals What is the Southern Limit of the Distribution of Red Palm Mite, Raoiella indica (Acari: Tenuipalpidae), in Agricultural Lands in Brazil?

2019 ◽  
Vol 102 (3) ◽  
pp. 581 ◽  
Author(s):  
Geovanny Barroso ◽  
Claudiane Martins da Rocha ◽  
Grazielle Furtado Moreira ◽  
Fernando Teruhiko Hata ◽  
Samuel Roggia ◽  
...  
Keyword(s):  
Agricultural Lands ◽  
Southern Limit ◽  
Red Palm Mite ◽  
Raoiella Indica
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