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165804 full-text articles. Page 7 of 3910.

Fast Shoreline Erosion Induced By Ship Wakes In A Coastal Lagoon: Field Evidence And Remote Sensing Analysis, Luca Zaggia, Giuliano Lorenzetti, Giorgia Manfe, Gian Marco Scarpa, Emanuela Molinaroli, Kevin E. Parnell, John Rapaglia, Maria Gionta, Tarmo Soomere 2017 National Research Council of Italy

Fast Shoreline Erosion Induced By Ship Wakes In A Coastal Lagoon: Field Evidence And Remote Sensing Analysis, Luca Zaggia, Giuliano Lorenzetti, Giorgia Manfe, Gian Marco Scarpa, Emanuela Molinaroli, Kevin E. Parnell, John Rapaglia, Maria Gionta, Tarmo Soomere

John Rapaglia

An investigation based on in-situ surveys combined with remote sensing and GIS analysis revealed fast shoreline retreat on the side of a major waterway, the Malamocco Marghera Channel, in the Lagoon of Venice, Italy. Monthly and long-term regression rates caused by ship wakes in a reclaimed industrial area were considered. The short-term analysis, based on field surveys carried out between April 2014 and January 2015, revealed that the speed of shoreline regression was insignificantly dependent on the distance from the navigation channel, but was not constant through time. Periods of high water levels due to tidal forcing or storm surges ...


Observations On The Puddling Behavior Of The Canadian Tiger Swallowtail Butterfly, Papilio Glaucus Canadensis In Northern Michigan, J. Mark Scriber, Matthew P. Ayres 2017 Michigan State University

Observations On The Puddling Behavior Of The Canadian Tiger Swallowtail Butterfly, Papilio Glaucus Canadensis In Northern Michigan, J. Mark Scriber, Matthew P. Ayres

The Great Lakes Entomologist

(excerpt)

The occurrence of "puddling" behavior in Lepidoptera has been reviewed by M. J. Norris (1936) by J. A. Downes (1973) and by P. H. Adler (1982). Butterflies have been previously reported on mammalian dung, urine, perspiration, saliva, salt, blood, campfire ashes, aphid honeydew, tree sap and animal carrion. The rarity of female puddling in butterflies, particularly the tiger swallowtail (Papilio glaucus) has been recently addressed by two studies (Berger and Lederhouse 1985, Scriber 1987).


Malathion Resistance In Larvae Of Some Southern Minnesota Populations Of The Indianmeal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae), Infesting Bulk-Stored Shelled Corn, W. A. Sumner II, P. K. Harein, Bh. Subramanyam 2017 University of Minnesota

Malathion Resistance In Larvae Of Some Southern Minnesota Populations Of The Indianmeal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae), Infesting Bulk-Stored Shelled Corn, W. A. Sumner Ii, P. K. Harein, Bh. Subramanyam

The Great Lakes Entomologist

Larvae of 21 field collected populations of the Indianmeal moth, Plodia interpunctella, infesting stored shelled corn in southern Minnesota were tested for their susceptibility to malathion in the laboratory. A population that was a composite of the 21 populations and a malathion susceptible population were also tested for their susceptibility to malathion, pirimiphos-methyl and chlorpyrifos-methyl. Comparison of the LDso values of the field populations with the malathion susceptible population indicated that the field populations were ca. 33- to 625-fold resistant to malathion. The composite field population was ca. 243-fold resistant to malathion, and this population was 3.2-fold cross-resistant to ...


Courtship Behavior In Habronattus Captiosus (Araneae: Salticidae), Bruce Cutler 2017 Valparaiso University

Courtship Behavior In Habronattus Captiosus (Araneae: Salticidae), Bruce Cutler

The Great Lakes Entomologist

Courtship display of Habronattus captiosus involves several behavioral elements common to other members of the Habronattus coecatus species group. The one unique element is vibration of the patellae when raised over the opisthosoma. Male-male interactions included an agonistic display and grappling. Fourteen male-female interactions were observed, which exhibited various combinations of display elements. There was one successful mating and one case of cannibalism by a male.


Chrysochus Auratus (Coleoptera: Chrysomelidae) Absolved As Pecan Pest, Charles E. Williams 2017 Virginia Polytechnic Institute and State University

Chrysochus Auratus (Coleoptera: Chrysomelidae) Absolved As Pecan Pest, Charles E. Williams

The Great Lakes Entomologist

Chrysochus auratus, the dogbane beetle, has been erroneously implicated as a pecan defoliator in the early literature. Alternative scenarios suggest other chrysomelid species that may have been responsible for the defoliation.


Use Of Baited Pitfall Traps For Monitoring Pales Weevil, Hylobius Pales (Coleoptera: Curculionidae), Kenneth F. Raffa, David W. A. Hunt 2017 University of Wisconsin

Use Of Baited Pitfall Traps For Monitoring Pales Weevil, Hylobius Pales (Coleoptera: Curculionidae), Kenneth F. Raffa, David W. A. Hunt

The Great Lakes Entomologist

Pitfall traps baited with ethanol and turpentine serve as an effective tool for monitoring pales weevil (Hylobius pales) populations. Males and females are equally attracted to this bait. Neither component alone showed any attractiveness. The presence of a pine stem for weevil feeding does not affect the number or sex ratio of captured weevils. The potential of using attraction to baited traps as a sampling method for pales weevil is discussed.


Spring Season Survey Of The Urban Blowflies (Diptera: Calliphoridae) Of Chicago, Illinois, Donald L. Baumgartner 2017 Northwest Mosquito Abatement District

Spring Season Survey Of The Urban Blowflies (Diptera: Calliphoridae) Of Chicago, Illinois, Donald L. Baumgartner

The Great Lakes Entomologist

During May 1980, 1165 blowflies of 12 species were trapped on chemically enhanced rat carrion baits in a dense urban setting in Chicago. In descending order, Cynomyopsis cadaverina, Lucilia sericata, and Phormia regina were the most abundant species recovered (92% of total). These results are contrasted with other nearby blowfly surveys.


Araphe Carolina In Illinois (Hemiptera: Largidae), John K. Bouseman 2017 Illinois Natural History Survey

Araphe Carolina In Illinois (Hemiptera: Largidae), John K. Bouseman

The Great Lakes Entomologist

(excerpt)

Araphe carolina (Herrich-Schaffer) is a little-known species that has been recorded "from North Carolina south to Florida, thence west through Tennessee to Arizona and Baja California" (Halstead, 1972). Froeschner (1944) characterized it as a "scarce species" in recording it from five counties in the Ozark Region of southern Missouri. The purpose of this note is to provide the first records of A. carolina in Illinois and incidentally to provide the first record of any largid bug in the state.


Additional Records Of Michigan Bat Ectoparasites, Steven B. Dood, Allen Kurta 2017 Ohio Environmental Protection Agency

Additional Records Of Michigan Bat Ectoparasites, Steven B. Dood, Allen Kurta

The Great Lakes Entomologist

New Michigan county records for Ischnopsyllidae, Cimicidae, Spinturnicidae, Macro- nyssidae, and Trombiculidae from bats are given along with two new bat/parasite records for the United States.


Terricolous Spiders (Araneae) Of Insecticide-Treated Spruce-Fir Forests In West-Central Maine, Daniel J. Hilburn, Daniel T. Jennings 2017 University of Maine

Terricolous Spiders (Araneae) Of Insecticide-Treated Spruce-Fir Forests In West-Central Maine, Daniel J. Hilburn, Daniel T. Jennings

The Great Lakes Entomologist

Spiders of 12 families, 42 genera, and at least 62 species were captured in linear-pitfall traps placed in insecticide-treated (Sevin-4-Oil®, Dipel 4L ®, Thuricide 16B®) and untreated spruce-fIr forests of west-central Maine. Species richness per family ranged from 1 (Theridiidae, Araneidae, Salticidae) to 19 (Erigonidae). Most trapped species were web-spinners (67.2%); most trapped individuals were hunters (75.2%). Lycosidae accounted for 66.1 % of all (n = 887) captured spiders. Total trapped spiders varied among insecticide treatments, sampling dates, and study sites. However, comparison of mean prespray and postspray trap catches indicated no significant reduction (ANOVA, ANCOVA, P 0.05) in ...


Biology, Injury, And Control Of The European Needle-Bending Midge (Diptera: Cecidomyiidae) On Scotch Pine In Michigan, Louis F. Wilson, Frank J. Sapio, Gary A. Simmons 2017 USDA Forest Service

Biology, Injury, And Control Of The European Needle-Bending Midge (Diptera: Cecidomyiidae) On Scotch Pine In Michigan, Louis F. Wilson, Frank J. Sapio, Gary A. Simmons

The Great Lakes Entomologist

Contarinia baeri is univoltine in Michigan. Adults emerge in spring, and females deposit eggs in small clusters in the sheaths of new-growth pine needles. Larvae hatch shortly thereafter and there are three larval instars. Larval feeding causes the needles to at first droop, discolor, and eventually drop, reducing the quality of Christmas trees and occasionally killing shoots. Larvae overwinter on the ground in cocoons, and pupate in spring. Adults were suppressed (> 75% control) with formulations of Pydrin® (fenvalerate) and Tempo® (cyfluthrin) applied within a week after adult emergence.


Growth And Development Of Two Broiler Strains With Low Protein And Crystalline Amino Acid Supplemented Diets, Chaoyang Li 2017 Louisiana State University

Growth And Development Of Two Broiler Strains With Low Protein And Crystalline Amino Acid Supplemented Diets, Chaoyang Li

LSU Master's Theses

The objective of this research was to compare the growth performance of broilers from two commercial breeds with control, low protein and low protein supplemented with crystalline amino acids diets. This was a randomized block design, and identical experiments were conducted on successively in two years. In each experiment, day-old chicks, Ross 708 broilers and Cobb 405 broilers, were randomly assigned into three dietary treatments: 1) positive control, 2) low crude protein (LP), and 3) LP + crystalline amino acids (CAA). A three phase feeding program was used. Feed and water were provided ad-libitum. On d 12, 19, 26, 33, 40 ...


Linking Taxonomic Diversity And Trophic Function: A Graph-Based Theoretical Approach, Marcella M. Jurotich, Kaitlyn Dougherty, Barbara Hayford, Sally Clark 2017 Wayne State College

Linking Taxonomic Diversity And Trophic Function: A Graph-Based Theoretical Approach, Marcella M. Jurotich, Kaitlyn Dougherty, Barbara Hayford, Sally Clark

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The purpose of this study is to develop a novel, visual method in analyzing complex functional trait data in freshwater ecology. We focus on macroinvertebrates in stream ecosystems under a gradient of habitat degradation and employ a combination of taxonomic and functional trait diversity analyses. Then we use graph theory to link changes in functional trait diversity to taxonomic richness and habitat degradation. We test the hypotheses that: 1) taxonomic diversity and trophic functional trait diversity both decrease with increased habitat degradation; 2) loss of taxa leads to a decrease in trophic function as visualized using a bipartite graph; and ...


Human Head Orientation And Eye Visibility As Indicators Of Attention For Goats (Capra Hircus), Christian Nawroth, Alan G. McElligott 2017 Queen Mary University of London

Human Head Orientation And Eye Visibility As Indicators Of Attention For Goats (Capra Hircus), Christian Nawroth, Alan G. Mcelligott

Alan G. McElligott, Ph.D.

Animals domesticated for working closely with humans (e.g. dogs) have been shown to be remarkable in adjusting their behaviour to human attentional stance. However, there is little evidence for this form of information perception in species domesticated for production rather than companionship. We tested domestic ungulates (goats) for their ability to differentiate attentional states of humans. In the first experiment, we investigated the effect of body and head orientation of one human experimenter on approach behaviour by goats. Test subjects (N = 24) significantly changed their behaviour when the experimenter turned its back to the subjects, but did not take ...


Goats Excel At Learning And Remembering A Highly Novel Cognitive Task, Elodie F. Briefer, Samaah Haque, Luigi Baciadonna, Alan G. McElligott 2017 Queen Mary University of London

Goats Excel At Learning And Remembering A Highly Novel Cognitive Task, Elodie F. Briefer, Samaah Haque, Luigi Baciadonna, Alan G. Mcelligott

Alan G. McElligott, Ph.D.

Introduction: The computational demands of sociality (maintaining group cohesion, reducing conflict) and ecological problems (extractive foraging, memorizing resource locations) are the main drivers proposed to explain the evolution cognition. Different predictions follow, about whether animals would preferentially learn new tasks socially or not, but the prevalent view today is that intelligent species should excel at social learning. However, the predictions were originally used to explain primate cognition, and studies of species with relatively smaller brains are rare. By contrast, domestication has often led to a decrease in brain size, which could affect cognition. In domestic animals, the relaxed selection pressures ...


Quality Prevails Over Identity In The Sexually Selected Vocalisations Of An Ageing Mammal, Elodie Briefer, Elisabetta Vannoni, Alan G. McElligott 2017 Queen Mary University of London

Quality Prevails Over Identity In The Sexually Selected Vocalisations Of An Ageing Mammal, Elodie Briefer, Elisabetta Vannoni, Alan G. Mcelligott

Alan G. McElligott, Ph.D.

Background: Male sexually selected vocalisations generally contain both individuality and quality cues that are crucial in intra- as well as inter-sexual communication. As individuality is a fixed feature whereas male phenotypic quality changes with age, individuality and quality cues may be subjected to different selection pressures over time. Individuality (for example, morphology of the vocal apparatus) and quality (for example, body size and dominance status) can both affect the vocal production mechanism, inducing the same components of vocalisations to convey both kinds of information. In this case, do quality-related changes to the acoustic structure of calls induce a modification of ...


Mother--Offspring Recognition Via Contact Calls In Cattle, Bos Taurus, Mónica Padilla de la Torre, Elodie F. Briefer, Brad M. Ochocki, Alan G. McElligott, Tom Reader 2017 University of Nottingham

Mother--Offspring Recognition Via Contact Calls In Cattle, Bos Taurus, Mónica Padilla De La Torre, Elodie F. Briefer, Brad M. Ochocki, Alan G. Mcelligott, Tom Reader

Alan G. McElligott, Ph.D.

Individual recognition in gregarious species is fundamental in order to avoid misdirected parental investment. In ungulates, two very different parental care strategies have been identified: ‘hider’ offspring usually lie concealed in vegetation whereas offspring of ‘follower’ species remain with their mothers while they forage. These two strategies have been suggested to impact on mother--offspring vocal recognition, with unidirectional recognition of the mother by offspring occurring in hiders and bidirectional recognition in followers. In domestic cattle, Bos taurus, a facultative hider species, vocal communication and recognition have not been studied in detail under free-ranging conditions, where cows and calves can graze ...


Goats Learn Socially From Humans In A Spatial Problem-Solving Task, Christian Nawroth, Luigi Baciadonna, Alan G. McElligott 2017 Queen Mary University of London

Goats Learn Socially From Humans In A Spatial Problem-Solving Task, Christian Nawroth, Luigi Baciadonna, Alan G. Mcelligott

Alan G. McElligott, Ph.D.

Domestication drives changes in animal cognition and behaviour. In particular, the capacity of dogs to socially learn from humans is considered a key outcome of how domestication shaped the canid brain. However, systematic evidence for social learning from humans in other domestic species is lacking and makes general conclusions about how domestication has affected cognitive abilities difficult. We assessed spatial and social problem-solving abilities in goats (Capra hircus) using a detour task, in which food was placed behind an inward or outward V-shaped hurdle. Goats performed better in the outward than in the inward detour without human demonstration. Importantly, a ...


Fallow Deer Polyandry Is Related To Fertilization Insurance, Elodie Briefer, Mary E. Farrell, Thomas J. Hayden, Alan G. McElligott 2017 Queen Mary University of London

Fallow Deer Polyandry Is Related To Fertilization Insurance, Elodie Briefer, Mary E. Farrell, Thomas J. Hayden, Alan G. Mcelligott

Alan G. McElligott, Ph.D.

Polyandry is widespread, but its adaptive significance is not fully understood. The hypotheses used to explain its persistence have rarely been tested in the wild and particularly for large, long-lived mammals. We investigated polyandry in fallow deer, using female mating and reproduction data gathered over 10 years. Females of this species produce a single offspring (monotocous) and can live to 23 years old. Overall, polyandry was evident in 12 % of females and the long-term, consistent proportion of polyandrous females observed, suggests that monandry and polyandry represent alternative mating strategies. Females were more likely to be polyandrous when their first mate ...


Mother-Young Recognition In An Ungulate Hider Species: A Unidirectional Proce, Marco V.G. Torriani, Elisabetta Vannoni, Alan G. McElligott 2017 Swiss Federal Institute of Technology

Mother-Young Recognition In An Ungulate Hider Species: A Unidirectional Proce, Marco V.G. Torriani, Elisabetta Vannoni, Alan G. Mcelligott

Alan G. McElligott, Ph.D.

Parent‐offspring recognition is usually crucial for survival of young. In mammals, olfaction often only permits identification at short range, and vocalizations are important at longer distances. Following and hiding antipredator strategies found in newborn mammals may also affect parental recognition mechanisms. We investigated mother‐offspring recognition in fallow deer, an ungulate hider species. We analyzed the structure of adult female and fawn contact calls to determine whether they are individually distinctive and tested for mother‐offspring recognition. Only females (and not fawns) have individualized vocalizations, with the fundamental frequency as the most distinctive parameter. Playback experiments showed that fawns ...


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