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Articles 1 - 11 of 11
Full-Text Articles in Life Sciences
Extensive Clonal Spread And Extreme Longevity In Saw Palmetto, A Foundation Clonal Plant, Mizuki K. Takahashi, Liana M. Horner, Toshiro Kubota, Nathan A. Keller, Warren G. Abrahamson Ii
Extensive Clonal Spread And Extreme Longevity In Saw Palmetto, A Foundation Clonal Plant, Mizuki K. Takahashi, Liana M. Horner, Toshiro Kubota, Nathan A. Keller, Warren G. Abrahamson Ii
Warren G. Abrahamson, II
The lack of effective tools has hampered our ability to assess the size, growth and ages of clonal plants. With Serenoa repens (saw palmetto) as a model, we introduce a novel analytical frame work that integrates DNA fingerprinting and mathematical modelling to simulate growth and estimate ages of clonal plants. We also demonstrate the application of such life-history information of clonal plants to provide insight into management plans. Serenoa is an ecologically important foundation species in many Southeastern United States ecosystems; yet, many land managers consider Serenoa a troublesome invasive plant. Accordingly, management plans have been developed to reduce or …
Description Of The Larva And Female Genitalia Of Trechus Gamae With Data On Its Ecology, Ana Reboleira, Vicente Ortuño
Description Of The Larva And Female Genitalia Of Trechus Gamae With Data On Its Ecology, Ana Reboleira, Vicente Ortuño
Ana Sofia P.S. Reboleira
The third instar larva and the female genitalia of Trechus gamae Reboleira et Serrano (Coleoptera Carabidae Trechini) are described, illustrated and commented. Larvae and imagos were collected in deep parts of caves from Estremenho karstic massif in the centre Portugal. The work provides the first study on hypogean beetle larvae from Portugal, increasing the knowledge about hypogean microendemic species from the Lusitanic district of the Iberian Peninsula. The morphological diagnostic characters of the female genitalia corroborate the inclusion of T. gamae in the “T. fulvus-group”. Some new data on the ecology of this species are also given.
Control Of Pulse Beetle, Callosubruchus Maculatus (F.) (Coleoptera: Bruchidae) In Different Cereals Using Spinosad Dust In Storage Conditions, Adel Khashaveh
Control Of Pulse Beetle, Callosubruchus Maculatus (F.) (Coleoptera: Bruchidae) In Different Cereals Using Spinosad Dust In Storage Conditions, Adel Khashaveh
Adel Khashaveh
Effectiveness of spinosad dust formulation, that contains 0.125% spinosad, was evaluated against adults Callosubruchus maculatus (F.) on four commodities: chickpea, split pea, cowpea and lentil. Spinosad was applied at three dose rates: 0.1, 0.2 and 0.3 g/kg, corresponding to 0.125, 0.25 and 0.375 mg/kg of the active ingredient, respectively. The experiment was carried out at 27°C and 55±5% relative humidity. Adults mortality was measured after 1, 2, 5 and 10-days of exposure. After the 10-day mortality count, all surviving insects were removed and samples retained under the same conditions for a further 35 days to assess progeny reduction. Mortality of …
On The Iberian Endemic Subgenus Lathromene (Coleoptera: Staphylinidae: Paederinae): Description Of The First Hypogean Domene Fauvel, From Portugal, Ana Reboleira, Fernando Gonçalves, Pedro Oromí
On The Iberian Endemic Subgenus Lathromene (Coleoptera: Staphylinidae: Paederinae): Description Of The First Hypogean Domene Fauvel, From Portugal, Ana Reboleira, Fernando Gonçalves, Pedro Oromí
Ana Sofia P.S. Reboleira
Domene (Lathromene) lusitanica n. sp. from Sicó karstic massif in Portugal is described and compared with other species of the subgenus, representing the first hypogean rove beetle from mainland Portugal. A comparison between Domene lusitanica n. sp. and the other species of the Iberian endemic subgenus Lathromene is made using diagnostic characters. An identification key for the males of Lathromene species is presented, and biogeographical and ecological comments are also included. The species of Domene known from the Iberian Peninsula are listed and their distributions are mapped.
Acute Toxicity Of Mercury And Chromium To Clarias Batrachus (Linn), Azhaguraj Ramakrishnan
Acute Toxicity Of Mercury And Chromium To Clarias Batrachus (Linn), Azhaguraj Ramakrishnan
Azhaguraj Ramakrishnan
Pollution of the aquatic ecosystems by heavy metals is a worldwide problem. In the present study, Clarias batrachus was exposed to Mercury and Chromium for 24, 48, 72 and 96 hrs. The median lethal concentration (LC50) of mercury to C. batrachus for 24, 48, 72 and 96 h of exposure were 1.4 ppm, 1.2 ppm, 1.0 ppm and 0.8 ppm respectively. The median lethal concentration (LC50) of chromium to C. batrachus for 24, 48, 72 and 96 h of exposure were 120 ppm, 115 ppm, 110 ppm and 102 ppm respectively. The acute toxicity levels were derived from LC50 concentrations …
Pathogenicity Of Iranian Isolates Of Metarhizium Anisopliae (Metschinkoff) (Ascomycota: Hypocreales) Against Trogoderma Granarium Everts (Coleoptera: Dermestidae), Adel Khashaveh
Adel Khashaveh
The Pathogenicity of Iranian isolates of Metarhizium anisopliae was evaluated against adults and larvae of Trogoderma granarium using immersion bioassay method. For each isolate, five aqueous suspensions were prepared in a logarithmic series from 1×105 to 1×109 conidia/ml. Each concentration was replicated four times. For each replicate, 30 adults or larvae were immersed in 5 ml of the suspension for 5 s. The entire assay replicated twice. All isolates were pathogenic to adults and larvae and mortality was elevated with increasing conidial concentration. Significant differences were detected among fungal isolates at different conidial concentrations. The cumulative mortality 10 days after …
The Use Of Entomopathogenic Fungus, Beauveria Bassiana (Bals.) Vuill. In Assays With Storage Grain Beetles, Adel Khashaveh
The Use Of Entomopathogenic Fungus, Beauveria Bassiana (Bals.) Vuill. In Assays With Storage Grain Beetles, Adel Khashaveh
Adel Khashaveh
Chemical insecticides have been widely employed for the control of storage grain pests. This has caused such problems as insecticide resistance along with contamination of foodstuffs with chemical residues. Thus, there is a growing interest in using pathogenic control agents as alternative. In this study, the potential of Beauveria bassiana (BbWeevil™, a commercial product containing 2×109 conidia g-1) was evaluated against adults of Tribolium castaneum, Sitophilus granarius and Oryzaephilus surinamensis. The experiments were carried out at the rates of 0, 250, 500, 750 and 1,000 mg kg-1 and exposure intervals of 5, 10 and 15 days, in 24±2°C and 50±5% …
Phenology Of Stable Fly (Diptera: Muscidae) Larvae In Round Bale Hay Feeding Sites In Eastern Nebraska., David B. Taylor, Dennis R. Berkebile
Phenology Of Stable Fly (Diptera: Muscidae) Larvae In Round Bale Hay Feeding Sites In Eastern Nebraska., David B. Taylor, Dennis R. Berkebile
David B Taylor
The temporal and spatial patterns of adult stable fly, Stomoxys calcitrans (L.), emergence from six sites where large round baled hay had been provided to pasture cattle as winter feed were studied using emergence traps. The substrate at these sites, consisting of waste hay mixed with bovine manure and urine, provided an excellent developmental habitat for immature stable flies. Stable flies were the most frequently collected fly emerging from these sites with a yearly average of 1,581 emerging per square meter. Stable fly emergence from these sites began in early May (235 annual accumulated Day-Degree 10° C [DD10]), peaked in …
The Composite Insect Trap: An Innovative Combination Trap For Biologically Diverse Sampling, Laura Russo, Rachel Stehouwer, J. Heberling, Katriona Shea
The Composite Insect Trap: An Innovative Combination Trap For Biologically Diverse Sampling, Laura Russo, Rachel Stehouwer, J. Heberling, Katriona Shea
Mason Heberling
No abstract provided.
Plant-Animal Interactions, W. Abrahamson, T. Taylor
Plant-Animal Interactions, W. Abrahamson, T. Taylor
Warren G. Abrahamson, II
No abstract provided.
Response Of Growing Calves To Stable Flies., Lisa A. Schole, David B. Taylor, Dennis R. Brink
Response Of Growing Calves To Stable Flies., Lisa A. Schole, David B. Taylor, Dennis R. Brink
David B. Taylor
No abstract provided.