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... Cardinium and Wolbachia are maternally inherited bacterial symbionts of arthropods that can manipulate host reproduction by increasing the fitness of infected females. Here, we report that Cardinium and Wolbachia coinfection induced male‐killing and cytoplasmic incompatibility (CI) when they coexisted in a cryptic species of whitefly, Bemisia tabaci Asia II7. Cardinium and Wolbachia symbionts were ...
Arabidopsis; Bemisia tabaci; Brassica; biosynthesis; cryptic species; cultivars; fecundity; glucosinolates; hydrolysis; life history; oviposition; pest management; Asia
Abstract:
... BACKGROUND: While plant glucosinolates are known to impart resistance to many insects, their role in the interactions between plants and many phloem‐feeding insects such as whiteflies are poorly understood. The whitefly Bemisia tabaci complex comprises many cryptic species that differ in the ability to utilize Brassica plants. However, whether Brassica plants‐specific traits such as glucosinolates ...
... Organochlorine pesticides are still widely used in many regions of the world, despite their toxic properties to many organisms, including humans, and their high environmental persistence in waters and sediments. In order to properly assess contaminant effects across trophic levels in aquatic communities, the responses of different model organisms should be investigated. Particularly for marine ben ...
... Kuruma shrimp Penaeus (Marsupenaeus) japonicus is a high‐value penaeid shrimp in Japanese live fish markets owing to its characteristic colour and flavour. Although this species was believed to be the single species of subgenus Marsupenaeus, the existence of two morphotypes (Form I and Form II) have been confirmed recently. Recent studies classified the native stock from Indian coast as Form II. F ...
Brachionus angularis; autumn; biotic factors; chlorophyll; cryptic species; eggs; fecundity; lakes; population density; population dynamics; predators; sediments; spring; summer; temporal variation; turbidity; water temperature; winter; zooplankton
Abstract:
... Understanding the ecological mechanisms driving the dynamics of field rotifer populations remains a challenge in ecology. Brachionus angularis (Rotifera) is preferred in such studies because of their planktonic behavior, high fecundity, and absence of cryptic species. In this study, one-year zooplankton samples were collected twice a month from a subtropical lake and the roles of abiotic and bioti ...
... Heavy metals are persistent pollutants, the concentrations of which have increased in many natural environments as a result of anthropogenic activities. Accumulation of heavy metals in coastal benthic habitats is common. Nematoda are the most abundant and species-rich phylum in these benthic habitats, and shifts in their assemblage composition are considered good indicators of environmental change ...
Anastrepha fraterculus; Anastrepha obliqua; Wolbachia; adults; assortative mating; cryptic species; egg fertility; fecundity; females; fruit flies; hybrids; introgression; morphs; pest management; pests; progeny; reproductive isolation; sex ratio; sympatry
Abstract:
... Among tephritid fruit flies, hybridization has been found to produce local adaptation and speciation, and in the case of pest species, induce behavioral and ecological alterations that can adversely impact efficient pest management. The fraterculus species group within Anastrepha (Diptera: Tephritidae), is a rapidly radiating aggregate, which includes cryptic species complexes, numerous sister spe ...
... Low morphological diversity among interstitial taxa makes it difficult to delimit species and their geographic boundaries based solely on morphology and molecular data often reveal cryptic species. Polygordius (Annelida, Polygordiidae) have low morphological diversity, but are unusual among interstitial species in their comparatively large size due to their elongated form, high fecundity, and pote ...
Rotifera; cryptic species; discriminant analysis; ecological differentiation; fecundity; life history; life tables; longevity; morphometry; new species; reproductive isolation; reproductive success; scanning electron microscopy; species diversity; temperature
Abstract:
... Morphological approaches may not provide sufficient resolution for species delineation. Thus, we used an integrated approach that included molecular and ecological characters as well as morphological features to gain a better estimate of species diversity and to improve our understanding of the speciation process within rotifers. Previously, seven putative cryptic species were found within Euchlan ...
... A new Acrostichus species is described based upon molecular sequence profiles and hybridisation testing. The new species, A. palmarum n. sp., had been previously described as local isolates (strains) of A. rhynchophori, i.e., an isolate recovered from Rhynchophorus cruentatus from South Florida (culture code RGD193) was designated as the type strain of A. rhynchophori, and other Central and South ...
... While it generally has been accepted that evolutionary pressures may drive parasitic worms to produce many small eggs to overcome the challenges of transmission, recent studies suggest wide variability in reproductive strategies among such worms. Although egg morphometrics and numbers have been reported from many species of Diplostomum, the presence of cryptic species has resulted in uncertainty i ...
Bemisia tabaci; adults; biotypes; control methods; crops; cryptic species; cyantraniliprole; fecundity; females; hatching; insect pests; lethal concentration 50; neonicotinoid insecticides; oviposition; pest control; sublethal effects; survival rate; China
Abstract:
... The Bemisia tabaci (Gennadius) cryptic species complex comprises important insect pests that cause devastating damage to agricultural crops worldwide. In China, the B. tabaci MED species, formerly known as biotype ‘Q’, has surpassed the MEAM1 species, formerly known as biotype ‘B’, which is threatening agricultural production all over the country as an increasing number of resistance cases have be ...
Bemisia tabaci; adults; crops; cryptic species; dinotefuran; fecundity; females; lethal concentration 50; pests; production technology; sublethal effects; survival rate; East Asia
Abstract:
... Two invasive whitefly cryptic species, Middle East-Asia Minor 1 (MEAM1) and Mediterranean (MED), are the most invasive and notorious pests on diverse crops and have significantly impacted agricultural production systems globally. This circumstance emphasizes the need for a better approach for controlling these species. In this study, the lethal effect of six insecticides and the sublethal effects ...
... When using biological control against pest populations, more than one biocontrol agent might be introduced simultaneously. This could be counterproductive in the event of negative interactions between the biocontrol agents. Within and between species interactions have a strong impact on mating behaviour and reproduction, and can have an impact on the effectiveness of biological control. We studied ...
... The emerald ash borer Agrilus planipennis (Coleoptera: Buprestidae) is a serious invasive pest that has killed millions of North American ash (Fraxinus spp.) trees in the United States and Canada since its first detection in 2002. Oobius primorskyensis Yao and Duan and Oobius agrili Zhang and Huang (Hymenoptera: Encyrtidae) constitute a cryptic species complex of egg parasitoids attacking A. plani ...
... Study of genetic structure of Ommatissus lybicus de Bergevin revealed significant variation among the allopatric populations of this pest. High biological and behavioral variation suggest either that this is a highly variable pest species or a complex with a mix of cryptic species. The degree of reproductive isolation was tested by crossing experiments on four allopatric Iranian populations. These ...
Bemisia tabaci; cotton; cryptic species; cultivars; fecundity; females; gossypol; insect pests; integrated pest management; life history; pest control; population growth; survival rate
Abstract:
... Use of plant secondary metabolic compounds is an important method for insect pest control. In this study, the survival, development, and reproduction of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) MEAM1 cryptic species were compared over two consecutive generations on three cotton cultivars of different gossypol levels. Both cotton cultivar and generation significantly affected the fitness ...
Tubastraea; bleaching; corals; cryptic species; fecundity; histology; latitude; mortality; oceans; oocytes; spawning; spermatozoa; water temperature; Costa Rica; Ecuador; Galapagos Islands
Abstract:
... The reproductive ecology of Tubastraea coccinea Lesson, an azooxanthellate tropical scleractinian coral, was studied over various periods from 1985 to 2006 at four principal eastern Pacific locations in Costa Rica, Panamá, and the Galápagos Islands (Ecuador). This small (polyp diameter 0.8–1.0 cm), relatively cryptic species produced ova and planulae year round, including colonies with as few as 2 ...