Log in

Relevant bibliographies by topics / Insect population distribution / Journal articles

To see the other types of publications on this topic, follow the link: Insect population distribution.

Journal articles on the topic 'Insect population distribution'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Insect population distribution.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Quisenberry, S. S., D. J. Schotzko, P. F. Lamb, and F. L. Young. "Insect Distribution in a Spring Pea-Winter Wheat-Spring Barley Crop Rotation System." Journal of Entomological Science 35, no. 3 (2000): 327–33. http://dx.doi.org/10.18474/0749-8004-35.3.327.

Full text

Abstract:

The effects of tillage method (conventional or conservative) and weed management level (recommended or minimum) on insect distribution in a wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), and pea (Pisum sativum L.) rotation were studied. Aphids were the major insect species on winter wheat and spring barley, but were not of economic importance. Beneficial species impacted aphid population levels by maintaining their numbers below economic thresholds. Tillage method and weed management level had limited impact on aphid and beneficial insect populations. Pea leaf weevil (Sitonia linea

APA, Harvard, Vancouver, ISO, and other styles

2

Loxdale, Hugh D., and Gugs Lushai. "Slaves of the environment: the movement of herbivorous insects in relation to their ecology and genotype." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 354, no. 1388 (1999): 1479–95. http://dx.doi.org/10.1098/rstb.1999.0492.

Full text

Abstract:

The majority of insect species do not show an innate behavioural migration, but rather populations expand into favourable new habitats or contract away from unfavourable ones by random changes of spatial scale. Over the past 50 years, the scientific fascination with dramatic long–distance and directed mass migratory events has overshadowed the more universal mode of population movement, involving much smaller stochastic displacement during the lifetime of the insects concerned. This may be limiting our understanding of insect population dynamics. In the following synthesis, we provide an overv

APA, Harvard, Vancouver, ISO, and other styles

3

Ni'am, Alfira Khullatun, Ari Hayati, and Hasan Zayadi. "Distribusi Temporal Populasi Serangga pada Tanaman Padi (Oryza sativa) di Unit Pelaksana Teknis Pengembangan Benih Palawija Singosari Malang." BIOSAINTROPIS (BIOSCIENCE-TROPIC) 5, no. 2 (2020): 38–46. http://dx.doi.org/10.33474/e-jbst.v5i2.226.

Full text

Abstract:

The rice plant (Oryza sativa.) is an important food crop which is a staple food for more than half of the world's population because it contains nutrients that the body needs. Rice production in East Java in 2011 experienced a significant decline in production i.e. 9.2% and declined again in 2013 (1.2%) with an average productivity (5.9) 1. Problems in agriculture are inseparable from the role of insects as pests. Decrease in production can occur due to insect pests. The purpose of this study was to identify the types of insects on rice fields, to find out the number of insects found based on

APA, Harvard, Vancouver, ISO, and other styles

4

Sahota, T. S., and F. G. Peet. "COMPUTER-ASSISTED MEASUREMENT AND ANALYSIS OF CHROMATIN DISTRIBUTION FOR DETERMINING QUALITY DIFFERENCES AMONG BARK BEETLE (SCOLYTIDAE) POPULATIONS." Memoirs of the Entomological Society of Canada 120, S146 (1988): 171–80. http://dx.doi.org/10.4039/entm120146171-1.

Full text

Abstract:

AbstractDigital image processing was used to analyse chromatin distribution patterns of fat body nuclei of five populations of Dendroctonus pseudotsugae Hopkins taken from standing (UST) trees, stressed standing (SST) trees and downed (DT) trees. At the population level, chromatin distribution patterns of DT beetles were closely grouped, whereas those from the other beetles were not. Individual nuclei from the DT and UST populations could be correctly assigned to their groups with great accuracy (96% and 90%, respectively), but only 65% of the individual nuclei from the SST population could be

APA, Harvard, Vancouver, ISO, and other styles

5

Sergeev, Michael G. "Distribution Patterns of Grasshoppers and Their Kin over the Eurasian Steppes." Insects 12, no. 1 (2021): 77. http://dx.doi.org/10.3390/insects12010077.

Full text

Abstract:

The main aims of this paper are to reveal general patterns of Orthoptera distribution in the Eurasian steppes, to evaluate long-term trends of changes in distribution of taxa and populations, and to estimate the potential for population changes relative to human activity and global warming trends. The main publications concerning diversity and distribution of these insects over the steppes are analyzed. The fauna of the Eurasian steppes includes more than 440 species of Orthoptera. The general distribution of grasshoppers and their kin in the Eurasian steppes reflects their common associations

APA, Harvard, Vancouver, ISO, and other styles

6

Al-Ghamdi, Ahmed A., Adgaba Nuru, Mohammed S. Khanbash, and Deborah R. Smith. "Geographical distribution and population variation of Apis mellifera jemenitica Ruttner." Journal of Apicultural Research 52, no. 3 (2013): 124–33. http://dx.doi.org/10.3896/ibra.1.52.3.03.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Sickle, J. Van. "Invalid estimates of rate of population increase from Glossina (Diptera: Glossinidae) age distributions." Bulletin of Entomological Research 78, no. 1 (1988): 155–61. http://dx.doi.org/10.1017/s0007485300016175.

Full text

Abstract:

AbstractSeveral published reports have presented estimates of the rate of increase, r, based on sampled ovarian age distributions from Glossina populations throughout Africa. These estimates are invalid, because an age distribution sampled at one point in time can be equated to a survivorship curve only if r = 0. When such a survivorship curve and a corresponding fecundity schedule are then used to estimate r via the Euler-Lotka equation, the result is a value of r near zero, regardless of the population's true rate of increase. Synthetic sampling from a hypothetical tsetse population confirme

APA, Harvard, Vancouver, ISO, and other styles

8

Wilke, André Barretto Bruno, and Mauro Toledo Marrelli. "Genetic Control of Mosquitoes: population suppression strategies." Revista do Instituto de Medicina Tropical de São Paulo 54, no. 5 (2012): 287–92. http://dx.doi.org/10.1590/s0036-46652012000500009.

Full text

Abstract:

Over the last two decades, morbidity and mortality from malaria and dengue fever among other pathogens are an increasing Public Health problem. The increase in the geographic distribution of vectors is accompanied by the emergence of viruses and diseases in new areas. There are insufficient specific therapeutic drugs available and there are no reliable vaccines for malaria or dengue, although some progress has been achieved, there is still a long way between its development and actual field use. Most mosquito control measures have failed to achieve their goals, mostly because of the mosquito's

APA, Harvard, Vancouver, ISO, and other styles

9

Meléndez, María Raquel, and William Patricio Ponce. "Pollination in the oil palms Elaeis guineensis, E. oleifera and their hybrids (OxG), in tropical America." Pesquisa Agropecuária Tropical 46, no. 1 (2016): 102–10. http://dx.doi.org/10.1590/1983-40632016v4638196.

Full text

Abstract:

ABSTRACT Oil palm (Elaeis guineensis) is very important in the Central and South American economies. Plants suffer from a devastating fungal disease known as "lethal decay" or "pudrición del cogollo", in Spanish. Producer countries in Africa, Asia and tropical America have developed breeding programs that seek the tolerance of this disease by plants. The hybrids Elaeis guineensis x Elaeis oleifera (OxG) are resistant, but show physiological problems that affect commercial productivity. Natural pollination in these hybrids is low and manual pollination has high labor costs. The Coleoptera order

APA, Harvard, Vancouver, ISO, and other styles

10

Doak, Patricia. "HABITAT PATCHINESS AND THE DISTRIBUTION, ABUNDANCE, AND POPULATION DYNAMICS OF AN INSECT HERBIVORE." Ecology 81, no. 7 (2000): 1842–57. http://dx.doi.org/10.1890/0012-9658(2000)081[1842:hpatda]2.0.co;2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Osawa, Takeshi, Kazuhisa Yamasaki, Ken Tabuchi, et al. "Climate-mediated population dynamics enhance distribution range expansion in a rice pest insect." Basic and Applied Ecology 30 (August 2018): 41–51. http://dx.doi.org/10.1016/j.baae.2018.05.006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Pollett, P. K. "On a model for interference between searching insect parasites." Journal of the Australian Mathematical Society. Series B. Applied Mathematics 32, no. 2 (1990): 133–50. http://dx.doi.org/10.1017/s0334270000008390.

Full text

Abstract:

AbstractThe purpose of this paper is to study a stochastic model which assesses the effect of mutual interference on the searching efficiency in populations of insect parasites. By looking carefully at the assumptions which govern the model, I shall explain why the searching efficiency is of the same order as the total number, N, in the population, a conclusion which is consistent with the predictions of population biologists; previous studies have reached the conclusion that the efficiency is of order . The major results of the paper establish normal approximations for the distribution of the

APA, Harvard, Vancouver, ISO, and other styles

13

Coulibaly, Krouholé, Muhammad Majeed, Chao Chen, Kolo YEO, Wei Shi, and Chun-Sen Ma. "Insights into the Maternal Ancestry of Côte d’Ivoire Honeybees Using the Intergenic Region COI-COII." Insects 10, no. 4 (2019): 90. http://dx.doi.org/10.3390/insects10040090.

Full text

Abstract:

Honeybee populations in Côte d’Ivoire have been previously identified as belonging to one subspecies, Apis mellifera scutellata, but other studies have since reported a mixed population consisting of A. m. adansonii and A. m. jemenitica. The population structure and the geographic distribution of honeybees in Côte d’Ivoire remain unclear. This study aimed to profile the population structure of honeybees and their biogeography in Côte d’Ivoire. A total of 33 honeybee colonies were sampled from 15 localities to investigate the maternal ancestry of indigenous honeybee populations using the DraI C

APA, Harvard, Vancouver, ISO, and other styles

14

Le Conte, Yves, Marina D. Meixner, Annely Brandt, et al. "Geographical Distribution and Selection of European Honey Bees Resistant to Varroa destructor." Insects 11, no. 12 (2020): 873. http://dx.doi.org/10.3390/insects11120873.

Full text

Abstract:

Developing resistance to the varroa mite in honey bees is a major goal for apicultural science and practice, the development of selection strategies and the availability of resistant stock. Here we present an extended literature review and survey of resistant populations and selection programs in the EU and elsewhere, including expert interviews. We illustrate the practical experiences of scientists, beekeepers, and breeders in search of resistant bees. We describe numerous resistant populations surviving without acaricide treatments, most of which developed under natural infestation pressure.

APA, Harvard, Vancouver, ISO, and other styles

15

Ji, Wei, Gary Gao, and Jiufeng Wei. "Potential Global Distribution of Daktulosphaira vitifoliae under Climate Change Based on MaxEnt." Insects 12, no. 4 (2021): 347. http://dx.doi.org/10.3390/insects12040347.

Full text

Abstract:

Grape phylloxera, Daktulosphaira vitifoliae, is a small, invasive, sap-sucking pest that is widely present in most viticulture regions all over the world. It is originally from North America and feeds on grapevine roots and leaves. In the current study, the potential distribution area of the leaf-feeding population was investigated with MaxEnt based on population occurrence data under different environmental variables. Results suggested that under current climatic conditions, Europe, East and North China, Japan, the Eastern USA, Uruguay, and the Southeast of South America are highly suitable a

APA, Harvard, Vancouver, ISO, and other styles

16

Casper-Lindley, Catharina, Scott Kimura, Daniel S. Saxton, et al. "Rapid Fluorescence-Based Screening for Wolbachia Endosymbionts in Drosophila Germ Line and Somatic Tissues." Applied and Environmental Microbiology 77, no. 14 (2011): 4788–94. http://dx.doi.org/10.1128/aem.00215-11.

Full text

Abstract:

ABSTRACTWolbachiais a globally distributed bacterial endosymbiont present in arthropods and nematodes. The advent of sensitive PCR-based approaches has greatly facilitated the identification ofWolbachia-infected individuals and analysis of population infection levels. Here, a complementary visual fluorescence-basedWolbachiascreening approach is described. Through the use of the fluorescent dye Syto-11,Wolbachiacan be efficiently detected in variousDrosophilatissues, including ovaries. Syto-11 also stainsWolbachiain other insects. BecauseWolbachiais inherited through the maternal germ line, bac

APA, Harvard, Vancouver, ISO, and other styles

17

Kevan, Peter G., E. Ann Clark, and Vernon G. Thomas. "Insect pollinators and sustainable agriculture." American Journal of Alternative Agriculture 5, no. 1 (1990): 13–22. http://dx.doi.org/10.1017/s0889189300003179.

Full text

Abstract:

AbstractUnderestimation of the pivotal role played by managed and native insect pollinators is a key constraint to the sustainability of contemporary agricultural practices. The economic value of such insects to pollination, seed set, and fruit formation greatly outweighs that suggested by more conventional indices, such as the value of honey and wax produced by honeybees. Although the European honeybee has been widely regarded as the single most important pollinating species, the increasing spread of trachael and Varroa mites and Africanized bees threatens the distribution and magnitude of tr

APA, Harvard, Vancouver, ISO, and other styles

18

Potts, Leslie J., J. D. Gantz, Yuta Kawarasaki, et al. "Environmental factors influencing fine-scale distribution of Antarctica’s only endemic insect." Oecologia 194, no. 4 (2020): 529–39. http://dx.doi.org/10.1007/s00442-020-04714-9.

Full text

Abstract:

AbstractSpecies distributions are dependent on interactions with abiotic and biotic factors in the environment. Abiotic factors like temperature, moisture, and soil nutrients, along with biotic interactions within and between species, can all have strong influences on spatial distributions of plants and animals. Terrestrial Antarctic habitats are relatively simple and thus good systems to study ecological factors that drive species distributions and abundance. However, these environments are also sensitive to perturbation, and thus understanding the ecological drivers of species distribution i

APA, Harvard, Vancouver, ISO, and other styles

19

Hong, Feng, Lizhi Gao, Hong-Liang Han, et al. "Population Genetics of Bactrocera minax (Diptera: Tephritidae) in China Based on nad4 Gene Sequence." Insects 10, no. 8 (2019): 236. http://dx.doi.org/10.3390/insects10080236.

Full text

Abstract:

Bactrocera minax (Enderlein) (Diptera: Tephritidae) is an important citrus pest in Asia with a non-uniform distribution. In some locations, it had been reported to occur but was either eradicated or disappeared itself. To understand species dispersal of B. minax, we collected and analyzed 359 individuals from 18 localities in China. One mitochondrial DNA gene fragment (nad4) was used to investigate the genetic diversity and population genetic structure of B. minax. The populations were divided by phylogenetic analyses and statistical parsimony haplotype networks into three branches: a Central

APA, Harvard, Vancouver, ISO, and other styles

20

Journal, Baghdad Science. "Family preference for the presence of cortical yellow." Baghdad Science Journal 3, no. 2 (2006): 238–41. http://dx.doi.org/10.21123/bsj.3.2.238-241.

Full text

Abstract:

The population density of the insect on Alorat and fruits located in the lower part of the tree more than the middle part of the plant and insect in one place and demonstrates that there is a nest there were conducted laboratory and field studies on citrus Hsasahanwaa and the Alvdaúaa distribution of cortical insect yellow ....

APA, Harvard, Vancouver, ISO, and other styles

21

Page, R. E., H. H. Laidlaw, and E. H. Erickson. "Closed Population Honeybee Breeding 4. The Distribution of Sex Alleles with Top Crossing." Journal of Apicultural Research 24, no. 1 (1985): 38–42. http://dx.doi.org/10.1080/00218839.1985.11100646.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Domingos, Cleiton A., José W. S. Melo, José E. M. Oliveira, and Manoel G. C. Gondim. "Mites on grapevines in northeast Brazil: occurrence, population dynamics and within-plant distribution." International Journal of Acarology 40, no. 2 (2014): 145–51. http://dx.doi.org/10.1080/01647954.2014.891651.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Czajkowska, Magdalena, Łukasz Dawidowicz, Anetta Borkowska, Izabela Dziekańska, and Marcin Sielezniew. "Population Genetic Structure and Demography of the Critically Endangered Chequered Blue Butterfly (Scolitantides orion) in a Highly Isolated Part of Its Distribution Range." Insects 11, no. 9 (2020): 608. http://dx.doi.org/10.3390/insects11090608.

Full text

Abstract:

Scolitantides orion is a butterfly species threatened in many European countries. In Poland, it survived in a single highly isolated area (Vistula River valley), which is an example of the dramatic decline in the population number. We studied the two largest remaining populations inhabiting opposite banks of the river. Mark-release-recapture studies showed that both populations were small, and they fluctuated in numbers, but adult individuals were twice as numerous on the western site. Genetic analyses were carried out using a mitochondrial (COI, ND5) and nuclear markers (Wgl, EF-1α, and micro

APA, Harvard, Vancouver, ISO, and other styles

24

Chuttong, Bajaree, Ninat Buawangpong, and Michael Burgett. "Drone Production by the Giant Honey Bee Apis dorsata F. (Hymenoptera: Apidae)." Sociobiology 66, no. 3 (2019): 475. http://dx.doi.org/10.13102/sociobiology.v66i3.4355.

Full text

Abstract:

This study investigates male (drone) production by the giant honey bee (Apis dorsata F.). The entire brood populations from 10 colonies were counted to determine the immature population of drones relative to workers. As the condition of each cell was determined the cell’s position and content were noted using the Microsoft Excel platform. The contents of the brood comb, including eggs, larvae, prepupae, capped worker pupae, capped drone pupae, pollen storage cells and finally empty brood cells were recorded. Results reveal the percent of pupal drones averaged 5.9 ± 6.2% of the total pupal coho

APA, Harvard, Vancouver, ISO, and other styles

25

Vieites-Blanco, Cristina, Rubén Retuerto, Luis Rodríguez Lado, and Margarita Lema. "Potential distribution and population dynamics of Pulvinariella mesembryanthemi, a promising biocontrol agent of the invasive plant species Carpobrotus edulis and C. aff. acinaciformis." Entomologia Generalis 40, no. 2 (2020): 173–85. http://dx.doi.org/10.1127/entomologia/2020/0758.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Munguti, Florence M., Dora C. Kilalo, Evans N. Nyaboga, Everlyne N. Wosula, Isaac Macharia, and Agnes W. Mwango’mbe. "Distribution and Molecular Diversity of Whitefly Species Colonizing Cassava in Kenya." Insects 12, no. 10 (2021): 875. http://dx.doi.org/10.3390/insects12100875.

Full text

Abstract:

The whitefly, Bemisia tabaci (Gennadium, Hemiptera) has been reported to transmit viruses that cause cassava mosaic disease (CMD) and cassava brown streak disease (CBSD) in many parts of sub-Saharan Africa (SSA). Currently, there is limited information on the distribution, species and haplotype composition of the whitefly populations colonizing cassava in Kenya. A study was conducted in the major cassava growing regions of Kenya to address this gap. Analyses of mitochondrial DNA cytochrome oxidase 1 (mtCO1) sequences revealed the presence of four distinct whitefly species: Bemisia tabaci, Bemi

APA, Harvard, Vancouver, ISO, and other styles

27

Araújo, Edilson D., Rosane Gomes Oliveira, Higor Cesar Meneses Calazans, et al. "Risk of local extinction and genetic diversity of Melipona quadrifasciata (Apidae: Meliponini) in a possible Northeastern limit of its distribution in Brazil." Sociobiology 63, no. 2 (2016): 804. http://dx.doi.org/10.13102/sociobiology.v63i2.946.

Full text

Abstract:

Rapid loss of genetic diversity among eusocial bees, and extinction of their local population has become a major world concern. Populations of M. quadrifasciata have increasingly declined due to predatory extractivism and destruction of their habitat. Knowledge of their local population could give insights on the strategies for monitoring and conservation of this species. In this study, initially, 14 colonies (140 workers) from the Northern limit of the Northeastern sandbank of the Atlantic Forest were analyzed employing geometric morphometrics techniques. Then the cytochrome b gene sequences

APA, Harvard, Vancouver, ISO, and other styles

28

Fan, Jingyu, Pengxiang Wu, Tianqi Tian, Qilin Ren, Muhammad Haseeb, and Runzhi Zhang. "Potential Distribution and Niche Differentiation of Spodoptera frugiperda in Africa." Insects 11, no. 6 (2020): 383. http://dx.doi.org/10.3390/insects11060383.

Full text

Abstract:

The fall armyworm, Spodoptera frugiperda (J.E. Smith) is a serious agricultural pest. The species originates from the tropical and subtropical regions of the Americas and has now become established in many countries. Its strong migratory ability is the key factor in the rapidly expanding range of S. frugiperda in Africa, where food security faces unprecedented challenges. Exploring potential distributions and niche differentiation of S. frugiperda could provide new insights into the nature of climate niche shifts and our ability to anticipate further invasions. In this study, the occurrence po

APA, Harvard, Vancouver, ISO, and other styles

29

Domingos, A. R., and M. S. Arcifa. "Spatial and temporal distribution of gerrid (Heteroptera) and predation on microcrustaceans from a tropical shallow lake." Brazilian Journal of Biology 77, no. 2 (2016): 289–98. http://dx.doi.org/10.1590/1519-6984.12715.

Full text

Abstract:

Abstract Predator-prey interactions involving an aquatic insect and zooplanktonic prey of different sizes were investigated to quantify prey mortality exposed to predators. Laboratory experiments were undertaken with the young and adult gerrid Rheumatobates crassifemur to test predation and size selectivity on the cladocerans Daphnia gessneri, Ceriodaphnia richardi, and Bosmina tubicen. Population fluctuations and spatial distribution of the gerrid were also evaluated in a small and shallow Brazilian lake throughout 12 months in fortnightly samples. The insects were more abundant in the littor

APA, Harvard, Vancouver, ISO, and other styles

30

Lin, Sheng-Feng, Gene-Sheng Tung, and Man-Miao Yang. "The Erythrina Gall Wasp Quadrastichus erythrinae (Insecta: Hymenoptera: Eulophidae): Invasion History, Ecology, Infestation and Management." Forests 12, no. 7 (2021): 948. http://dx.doi.org/10.3390/f12070948.

Full text

Abstract:

The Erythrina gall wasp Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae) is an invasive insect that induces galls on coral trees (species of Erythrina, Fabaceae) in urban and suburban landscapes. Weakening and death of the tree were both observed after the infestation by this insect, wherein feeding and consequent draining of nutrients by a large population of Q. erythrinae could be playing a key role. In this article, we consolidate and summarize the information on the distribution, invasion route, ecology, infestation level, and management of Q. erythrinae populations in the last two d

APA, Harvard, Vancouver, ISO, and other styles

31

Just, Michael G., and Steven D. Frank. "Thermal Tolerance of Gloomy Scale (Hemiptera: Diaspididae) in the Eastern United States." Environmental Entomology 49, no. 1 (2020): 104–14. http://dx.doi.org/10.1093/ee/nvz154.

Full text

Abstract:

Abstract An insect species’ geographic distribution is probably delimited in part by physiological tolerances of environmental temperatures. Gloomy scale (Melanaspis tenebricosa (Comstock)) is a native insect herbivore in eastern U.S. forests. In eastern U.S. cities, where temperatures are warmer than nearby natural areas, M. tenebricosa is a primary pest of red maple (Acer rubrum L.; Sapindales: Sapindaceae) With warming, M. tenebricosa may spread to new cities or become pestilent in forests. To better understand current and future M. tenebricosa distribution boundaries, we examined M. tenebr

APA, Harvard, Vancouver, ISO, and other styles

32

Rodenhouse, Nicholas L., Lynn M. Christenson, Dylan Parry, and Linda E. Green. "Climate change effects on native fauna of northeastern forestsThis article is one of a selection of papers from NE Forests 2100: A Synthesis of Climate Change Impacts on Forests of the Northeastern US and Eastern Canada." Canadian Journal of Forest Research 39, no. 2 (2009): 249–63. http://dx.doi.org/10.1139/x08-160.

Full text

Abstract:

We review the observed and potential effects of climate change on native fauna of forests in northeastern North America by focusing on mammals, birds, amphibians, and insects. Our assessment is placed in the context of recent regional-scale climate projections. Climate change, particularly in recent decades, has affected the distribution and abundance of numerous wildlife species. Warming temperatures, alterations to precipitation regimes, seasonality, and climatic extremes are projected to affect species directly or indirectly in each of the focal taxa. Greatest climate change will occur duri

APA, Harvard, Vancouver, ISO, and other styles

33

D’Ambrosio, Damon A., Anders S. Huseth, and George G. Kennedy. "Determining Frankliniella fusca (Thysanoptera: Thripidae) Egg Distribution in Neonicotinoid Seed-Treated Cotton." Journal of Economic Entomology 112, no. 2 (2018): 827–34. http://dx.doi.org/10.1093/jee/toy393.

Full text

Abstract:

Abstract Frankliniella fusca (Hinds) (Thysanoptera: Thripidae) is an early-season cotton pest. Seedlings are injured by larvae, which hatch from eggs oviposited into seedlings and feed on developing plant tissue. Better understanding F. fusca oviposition in cotton may improve their management and address new challenges such as resistance to neonicotinoid seed treatments (NSTs). Cotton seedlings exposed to F. fusca were either cleared and stained to determine egg density and location, or dissected and washed to determine larval distribution. Experiments were conducted in the greenhouse with a s

APA, Harvard, Vancouver, ISO, and other styles

34

Lavallee, Susanne L., and John S. Richardson. "Relative abundance and movement of the carabid beetle Scaphinotus angusticollis in managed coniferous riparian forests of southwestern British Columbia." Canadian Journal of Forest Research 40, no. 4 (2010): 611–18. http://dx.doi.org/10.1139/x10-003.

Full text

Abstract:

Riparian reserves designed to protect stream ecosystems are valuable to the conservation of riparian obligate and forest-preferring species; however, there have been few studies of terrestrial invertebrates with more general habitat requirements. To characterize the use of riparian reserves by terrestrial insects, we examined the ecology of Scaphinotus angusticollis Mannerheim, a large and abundant carabid beetle with a broad distribution in coniferous forests of western North America. Population sizes and movement behaviour of S. angusticollis were contrasted among clearcuts, 30 m reserves, a

APA, Harvard, Vancouver, ISO, and other styles

35

Morente, Marina, Daniele Cornara, María Plaza, et al. "Distribution and Relative Abundance of Insect Vectors of Xylella fastidiosa in Olive Groves of the Iberian Peninsula." Insects 9, no. 4 (2018): 175. http://dx.doi.org/10.3390/insects9040175.

Full text

Abstract:

The phytosanitary emergency caused by the spread of Xylella fastidiosa in the Mediterranean has raised demands for a better understanding of the ecology of its presumed and candidate insect vectors. Here, we present the results of a two-year survey carried out in olive groves across southern, eastern and Central Spain and northeastern Portugal. Several sampling methods were tested and compared to select the most appropriate to estimate population levels of potential vectors of X. fastidiosa. The spittlebugs Philaenus spumarius and Neophilaenus campestris (Hemiptera: Aphrophoridae) were the mai

APA, Harvard, Vancouver, ISO, and other styles

36

Reznik, S. Ya. "Host plant population density and distribution pattern as factors limiting geographic distribution of the ragweed leaf beetle Zygogramma suturalis F. (Coleoptera, Chrysomelidae)." Entomological Review 91, no. 3 (2011): 292–300. http://dx.doi.org/10.1134/s001387381103002x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Onah, Ikechukwu Eugene, Joseph Effiong Eyo, and DeMar Taylor. "Population dynamics and distribution of exotic and native frugivorous insects of citrus in Nsukka, Nigeria." Polish Journal of Entomology 90, no. 3 - Ahead of print (2021): 106–18. http://dx.doi.org/10.5604/01.3001.0015.0173.

Full text

Abstract:

Invasion of the exotic Bactrocera dorsalis (Hendel, 1912) (Tephritidae) has drastically reduced the abundance and distribution of native Ceratitis anonae Graham, 1908 (Tephritidae) and false codling moth Thaumatotibia leucotreta (Meyrick, 1913) (Tortricidae) in Nigeria. There is an overlap in resource use among the three frugivorous insects which could result in interspecific competition. Knowledge of the population dynamics and distribution of the three frugivorous insects in the study area is lacking and such data are indispensable for effective management of the tephritid and tortricid pest

APA, Harvard, Vancouver, ISO, and other styles

38

Sabbatini Peverieri, Giuseppino, Elijah Talamas, Marie Claude Bon, et al. "Two Asian egg parasitoids of Halyomorpha halys (Stål) (Hemiptera, Pentatomidae) emerge in northern Italy: Trissolcus mitsukurii (Ashmead) and Trissolcus japonicus (Ashmead) (Hymenoptera, Scelionidae)." Journal of Hymenoptera Research 67 (December 31, 2018): 37–53. http://dx.doi.org/10.3897/jhr.67.30883.

Full text

Abstract:

Halyomorphahalys(Stål) is a severe agricultural pest that is spreading worldwide from its original distribution in Asia. Egg parasitoids from Asia, which play a key role in the population dynamics ofH.halys, are following its host along global pathways. We present the first records ofTrissolcusmitsukuriiin Europe, and ofTrissolcusjaponicusin Italy. Both discoveries were made in northern Italy, whereH.halysis widely present and has reached extremely high population densities in some areas. Given the availability of their host, the distributions and populations of these exotic egg parasitoids ar

APA, Harvard, Vancouver, ISO, and other styles

39

Wu, Yangxue, Junjie Li, Huanhuan Liu, Gexia Qiao, and Xiaolei Huang. "Investigating the Impact of Climate Warming on Phenology of Aphid Pests in China Using Long-Term Historical Data." Insects 11, no. 3 (2020): 167. http://dx.doi.org/10.3390/insects11030167.

Full text

Abstract:

Global climate warming has significant influence on individual development, population dynamics, and geographical distribution of many organisms, which has drawn much attention in recent years. As a large group of poikilotherms, insects whose life activities are closely linked with ambient temperature are supposed to be influenced by global warming. In order to test the consistency or difference of the effects of long-term climate warming on phytophagous insect pests in different geographical environments, this study collected historical data on the occurrence and population dynamics of three

APA, Harvard, Vancouver, ISO, and other styles

40

Valencia Arbeláez, Julián Andrés, Alberto Soto Giraldo, Gabriel Jaime Castaño Villa, Luis Fernando Vallejo Espinosa, Melba Ruth Salazar Gutierrez, and Germán Vargas. "Population dynamics of sugarcane borers, Diatraea spp., under different climatic scenarios in Colombia." PLOS ONE 16, no. 1 (2021): e0244694. http://dx.doi.org/10.1371/journal.pone.0244694.

Full text

Abstract:

Seasonal temperature and precipitation patterns on a global scale are main factors to which insects and plants adapt through natural selection, although periodic outbreaks in insect populations may occur in areas where they had not been previously reported, a phenomenon considered as a consequence of global warming. In this study, we estimate the distribution of sugarcane borers, Diatraea spp., under different climate scenarios (rcp26, rcp45, rcp60 and rcp85.) Insects were collected weekly in four sugarcane fields from four different towns in the department of Caldas (Colombia) during 2017, an

APA, Harvard, Vancouver, ISO, and other styles

41

Gottlieb, Yuval, Murad Ghanim, Elad Chiel, et al. "Identification and Localization of a Rickettsia sp. in Bemisia tabaci (Homoptera: Aleyrodidae)." Applied and Environmental Microbiology 72, no. 5 (2006): 3646–52. http://dx.doi.org/10.1128/aem.72.5.3646-3652.2006.

Full text

Abstract:

ABSTRACT Whiteflies (Homoptera: Aleyrodidae) are sap-sucking insects that harbor “Candidatus Portiera aleyrodidarum,” an obligatory symbiotic bacterium which is housed in a special organ called the bacteriome. These insects are also home for a diverse facultative microbial community which may include Hamiltonella, Arsenophonus, Fritchea, Wolbachia, and Cardinium spp. In this study, the bacteria associated with a B biotype of the sweet potato whitefly Bemisia tabaci were characterized using molecular fingerprinting techniques, and a Rickettsia sp. was detected for the first time in this insect

APA, Harvard, Vancouver, ISO, and other styles

42

Seniczak, Stanisław, Anna Seniczak, and Stephen J. Coulson. "Morphological ontogeny, distribution of Hermannia scabra (Acari: Oribatida: Hermanniidae) in Svalbard and descriptive population parameters." Acarologia 57, no. 4 (2017): 877–92. http://dx.doi.org/10.24349/acarologia/20174214.

Full text

Abstract:

The morphological ontogeny and distribution of Hermannia scabra (L. Koch, 1879) in Arctic Svalbard and descriptive population parameters were investigated. All instars of H. scabra are stocky, as in other species of Hermannia Nicolet, 1855, and have the same gastronotal setal ontogeny (12 pairs in the larve and 16 pairs in the nymphs and adults). In this species, the prodorsal setae are similar to other species of Hermannia, except for the bothridial seta which is clavate, as in H. reticulata Thorell, 1871. In other species of Hermannia the bothridial seta is setiform. Most prodorsal and gastr

APA, Harvard, Vancouver, ISO, and other styles

43

Ambrose, John D., Peter G. Kevan, and Randy M. Gadawski. "Hop tree (Ptelea trifoliata) in Canada: population and reproductive biology of a rare species." Canadian Journal of Botany 63, no. 11 (1985): 1928–35. http://dx.doi.org/10.1139/b85-272.

Full text

Abstract:

In Canada, Ptelea trifoliata L. (Rutaceae) is restricted in its natural distribution primarily to the Lake Erie shoreline. Although it is locally successful as a colonizing species, it appears inhibited from either exploiting a large area of shoreline habitat or extending its range inland. The morphological descriptions of the hop tree's sexual expression have been ambiguous; however, our observations show this species to be clearly dioecious, with only about 2% of the otherwise male plants producing a few hermaphroditic flowers, and fruit. The sex ratio is strongly skewed toward the males, wh

APA, Harvard, Vancouver, ISO, and other styles

44

Narasimham, A. Uma, and M. J. Chacko. "The distribution of some Rastrococcus spp. (Homoptera: Pseudococcidae) on mango in India." Bulletin of Entomological Research 81, no. 4 (1991): 445–48. http://dx.doi.org/10.1017/s0007485300032016.

Full text

Abstract:

AbstractThe distribution of Rastrococcus spp. within mango trees (Mangifera indica) was studied at Bangalore, India. Population densities of R. invadens Williams, R. iceryoides (Green) and R. mangiferae (Green) were significantly higher on the abaxial leaf surface compared with the adaxial surface. Mealybug density was also higher from ground level up to 2 m compared with above 2 m. Significant variations in Rastrococcus spp. populations among trees and species composition per tree were observed. As populations built up on leaves, migration to other leaves occurred, more predominantly in R. ma

APA, Harvard, Vancouver, ISO, and other styles

45

Chernaki-Leffer, AM, LM Almeida, DR Sosa-Gómez, A. Anjos, and KM Vogado. "Populational fluctuation and spatial distribution of Alphitobius diaperinus (Panzer) (Coleoptera; Tenebrionidae) in a poultry house, Cascavel, Parana state, Brazil." Brazilian Journal of Biology 67, no. 2 (2007): 209–13. http://dx.doi.org/10.1590/s1519-69842007000200005.

Full text

Abstract:

Knowledge of the population fluctuation and spatial distribution of pests is fundamental for establishing an appropriate control method. The population fluctuation and spatial distribution of the Alphitobius diaperinus in a poultry house in Cascavel, in the state of Parana, Brazil, was studied between October, 2001 and October 2002. Larvae and adults of the lesser mealworm were sampled weekly using Arends tube traps (n = 22) for six consecutive flock grow-outs. The temperature of the litter and of the poultry house was measured at the same locations of the tube traps. Beetle numbers increased

APA, Harvard, Vancouver, ISO, and other styles

46

Tingley, G. A., and R. M. Anderson. "Environmental sex determination and density-dependent population regulation in the entomogenous nematodeRomanomermis culicivorax." Parasitology 92, no. 2 (1986): 431–49. http://dx.doi.org/10.1017/s0031182000064192.

Full text

Abstract:

SUMMARYEnvironmental sex determination in the mermithid nematodeRomanomermisculicivorax is examined in the context of parasite reproductive success and population regulation. Experimental results show that the sex ratio of the nematode within its mosquito host (Culex quinquefasciatus) is dependent on parasite density. Sex ratios are biased to females at low parasite burdens and to males at high parasite burdens. Low temperature further enhances female-biased ratios. The net effect of density-dependent sex determination on parasite and host population growth is shown to be critically dependent

APA, Harvard, Vancouver, ISO, and other styles

47

Elsensohn, Johanna E., Coby Schal, and Hannah J. Burrack. "Plasticity in Oviposition Site Selection Behavior in Drosophila suzukii (Diptera: Drosophilidae) in Relation to Adult Density and Host Distribution and Quality." Journal of Economic Entomology 114, no. 4 (2021): 1517–22. http://dx.doi.org/10.1093/jee/toab108.

Full text

Abstract:

Abstract Flexibility in oviposition site selection under temporally shifting environmental conditions is an important trait that allows many polyphagous insects to flourish. Population density has been shown to affect egg-laying and offspring fitness throughout the animal kingdom. The effects of population density in insects have been suggested to be mutualistic at low densities, whereas intraspecific competition is exhibited at high densities. Here, we explore the effects of adult crowding and spatial resource variation on oviposition rate in the invasive pest Drosophila suzukii (Matsumura).

APA, Harvard, Vancouver, ISO, and other styles

48

Liu, Min, Stephen G. Compton, Fo-En Peng, Jian Zhang, and Xiao-Yong Chen. "Movements of genes between populations: are pollinators more effective at transferring their own or plant genetic markers?" Proceedings of the Royal Society B: Biological Sciences 282, no. 1808 (2015): 20150290. http://dx.doi.org/10.1098/rspb.2015.0290.

Full text

Abstract:

The transfer of genes between populations is increasingly important in a world where pollinators are declining, plant and animal populations are increasingly fragmented and climate change is forcing shifts in distribution. The distances that pollen can be transported by small insects are impressive, as is the extensive gene flow between their own populations. We compared the relative ease by which small insects introduce genetic markers into their own and host-plant populations. Gene flow via seeds and pollen between populations of an Asian fig species were evaluated using cpDNA and nuclear DN

APA, Harvard, Vancouver, ISO, and other styles

49

Williams, Iain S., T. Hefin Jones, and Susan E. Hartley. "The role of resources and natural enemies in determining the distribution of an insect herbivore population." Ecological Entomology 26, no. 2 (2001): 204–11. http://dx.doi.org/10.1046/j.1365-2311.2001.00310.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Pair, S. D., J. R. Raulston, A. N. Sparks, J. K. Westbrook, and G. K. Douce. "Fall Armyworm Distribution and Population Dynamics in the Southeastern States." Florida Entomologist 69, no. 3 (1986): 468. http://dx.doi.org/10.2307/3495380.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!