scholarly journals Field Studies of the Food of Nestling Birds The Feeding Habits of the Chipping Sparrow C. M. Weed W. F. Fiske A Study of the Home Life of the Brown Thrasher, Toxostoma rufum (Linn.). Wilson Bulletin, Vol. XXIV, No. 2 Ira N. Gabrielson A Study of the Nesting Behavior of the Yellow Warbler (Dendroica æstiva æstiva). Wilson Bulletin, Vol. XXV, No. 2 Harry C. Bigglestone Nest-Life of the Catbird, Dumetella carolinensis Linn. Wilson Bulletin, Vol. XXV, No. 4 Ira N. Gabrielson A Further Study of the Home Life of the Brown Thrasher, Toxostoma rufum Linn

The Auk ◽  
1914 ◽  
Vol 31 (3) ◽  
pp. 420-421
Keyword(s):  
Feeding Habits ◽  
Field Studies ◽  
Nesting Behavior ◽  
Yellow Warbler ◽  
Home Life ◽  
Dumetella Carolinensis

POTENTIAL OF ANTIFEEDANTS TO CONTROL LARVAL FEEDING OF SELECTED NEODIPRION SAWFLIES (HYMENOPTERA: DIPRIONIDAE)

1976 ◽  
Vol 108 (11) ◽  
pp. 1137-1144 ◽  
Author(s):  
J. N. All ◽  
D. M. Benjamin
Keyword(s):  
Pinus Banksiana ◽  
Feeding Habits ◽  
Field Tests ◽  
Field Studies ◽  
Jack Pine ◽  
Larval Feeding ◽  
Pine Sawfly ◽  
European Pine Sawfly ◽  
Feeding Development ◽  
Laboratory Bioassays

AbstractAntifeedants for controlling larval feeding of several Neodiprion sawflies were evaluated in laboratory and field studies. Nine commercially available insect antifeedants and a hexane extract of the juvenile foliage of jack pine, Pinus banksiana Lambert, were tested on larvae of six species. In laboratory bioassays larvae exhibited varying sensitivity to antifeedants; generally species with monophagous or restricted oligophagous feeding habits were most sensitive. In the laboratory the Swaine jack pine sawfly, Neodiprion swainei Middleton, had severely restricted feeding, development, survival, and fecundity. Triphenyltin hydroxide was toxic to N. swainei and to European pine sawfly, N. sertifer (Geoffroy). In field tests certain antifeedants disrupted N. swainei feeding and development. The colonial behavior of larvae often was disrupted and solitary larvae fell from trees or wandered on twigs. Colony disruption by most antifeedants was temporary and many larvae resumed feeding.

scholarly journals Presence of Pathogen-killed Larvae Influences Nesting Behavior of the Alfalfa Leafcutting Bee (Hymenoptera: Megachilidae)

2021 ◽  
Author(s):  
Ellen G Klinger ◽  
Dennis L Welker ◽  
Rosalind R James
Keyword(s):  
Natural Environment ◽  
Fungal Spores ◽  
Field Studies ◽  
Behavioral Changes ◽  
Nesting Behavior ◽  
Megachile Rotundata ◽  
Fungal Exposure ◽  
Nesting Sites ◽  
Alfalfa Seed ◽  
Nesting Patterns

Abstract The alfalfa leafcutting bee (Megachile rotundata (Fabricius)), a commercial pollinator used for alfalfa seed production, is susceptible to chalkbrood disease via ingested fungal spores. Diseases of insects can elicit behavioral changes in their hosts, but there are no recorded behaviors of alfalfa leafcutting bees in response to this fungal exposure. We conducted field studies to determine whether bees in pathogen-dense environments altered their nesting patterns, specifically if bees exposed to fungal spores produced higher numbers of nest cells and whether the proportions of nest cells that failed as eggs or small larvae (a state known as ‘pollen ball’) were greater. We found that our control bees, nontreated bees which were not exposed to chalkbrood spores other than those in the natural environment, had the highest proportion of pollen ball cells. Bees experimentally exposed to infective spores created the lowest number of nests and the fewest cells. Bees experimentally exposed to heat killed noninfective spores produced the greatest number of nests and cells overall and the greatest number of healthy progeny. We conclude that there are underlying behaviors that are elicited in response to the presence of chalkbrood spores that reduce the proportion of failed nest cells (grooming) and increase retention of bees at nesting sites (delay of bee emergence). Through further study of these behaviors, bee managers can potentially increase the productivity of their bee populations.

scholarly journals Ant-App-DB: a smart solution for monitoring arthropods activities, experimental data management and solar calculations without GPS in behavioral field studies

F1000Research ◽  
2015 ◽  
Vol 3 ◽  
pp. 311 ◽  
Author(s):  
Zeeshan Ahmed ◽  
Saman Zeeshan ◽  
Pauline Fleischmann ◽  
Wolfgang Rössler ◽  
Thomas Dandekar
Keyword(s):  
Experimental Data ◽  
Data Management ◽  
Feeding Habits ◽  
Smart Phone ◽  
Field Studies ◽  
Time Of Day ◽  
Direct Access ◽  
Ecological Data ◽  
Solar Position ◽  
Smart Phone Application

Field studies on arthropod ecology and behaviour require simple and robust monitoring tools, preferably with direct access to an integrated database. We have developed and here present a database tool allowing smart-phone based monitoring of arthropods. This smart phone application provides an easy solution to collect, manage and process the data in the field which has been a very difficult task for field biologists using traditional methods. To monitor our example species, the desert ant Cataglyphis fortis, we considered behavior, nest search runs, feeding habits and path segmentations including detailed information on solar position and Azimuth calculation, ant orientation and time of day. For this we established a user friendly database system integrating the Ant-App-DB with a smart phone and tablet application, combining experimental data manipulation with data management and providing solar position and timing estimations without any GPS or GIS system. Moreover, the new desktop application Dataplus allows efficient data extraction and conversion from smart phone application to personal computers, for further ecological data analysis and sharing. All features, software code and database as well as Dataplus application are made available completely free of charge and sufficiently generic to be easily adapted to other field monitoring studies on arthropods or other migratory organisms. The software applications Ant-App-DB and Dataplus described here are developed using the Android SDK, Java, XML, C# and SQLite Database.

scholarly journals Alteration of the feeding behavior of an omnivorous fish, Scardinius acarnanicus (Actinopterygii: Cypriniformes: Cyprinidae), in the presence of fishing lights

2021 ◽  
Vol 51 (2) ◽  
pp. 131-138
Author(s):  
Lambros Tsounis ◽  
George Kehayias
Keyword(s):  
Content Analysis ◽  
Feeding Behavior ◽  
Feeding Habits ◽  
Fish Predation ◽  
Field Studies ◽  
Stomach Content Analysis ◽  
Elevated Concentration ◽  
Feeding Preferences ◽  
Reported Study ◽  
Commercial Species

Fishing with light is an old and common practice yielding a substantial catch volume globally. Despite the popularity of the method and the efforts to improve it, there is a lack of field studies on the effects of light on the feeding preferences of the attracted fishes. A previous report suggested that purse seine fishing lights can differentiate the feeding preferences of the approaching fishes, such as Atherina boyeri Risso, 1810 in Lake Trichonis (Greece). The presently reported study aims to verify these findings by investigating the diet of the endemic Scardinius acarnanicus Economidis, 1991. The feeding behavior of S. acarnanicus was studied from 2016 to 2019 through gut content analysis, in specimens from Lake Trichonis that came from purse seining with light and specimens caught without light. The same investigation was carried out comparatively in specimens taken by gillnets from two nearby lakes (lakes Ozeros and Amvrakia), where S. acarnanicus is present, but no fishing with light is exercised. The stomach content analysis conducted on 699 S. acarnanicus specimens revealed the intense effect of light on its diet resulting in the alteration of its feeding habits towards fish predation and especially Atherina boyeri. On the contrary, the specimens taken with the use of gillnets, from the three lakes, showed a typical omnivorous feeding behavior. The findings of the presently reported study support the assumption that the elevated concentration of fish close to fishing lights alters the feeding behavior of certain species making them predators. Considering that fishing with light is practiced worldwide, this could be of great ecological significance to the ichthyofauna not only of inland waters but also of marine areas, affecting perhaps several commercial species.

Field studies on the biology and economic importance of Pachnoda interrupta (Coleoptera: Scarabaeidae) in Mali, west africa

1992 ◽  
Vol 82 (1) ◽  
pp. 19-27 ◽  
Author(s):  
J.P. Grunshaw
Keyword(s):  
Pennisetum Glaucum ◽  
Feeding Habits ◽  
Field Studies ◽  
Instar Larva ◽  
Yield Losses ◽  
North West ◽  
The Third ◽  
Pachnoda Interrupta ◽  
Economic Injury ◽  
Third Instar Larva

AbstractA description is given of the life history, biology and feeding habits of the cetoniine beetle Pachnoda interrupta (Olivier) (Coleoptera: Scarabaeidae) studied in pearl millet (Pennisetum glaucum) fields in north-west Mali. The third instar larva of this beetle, reared from the progeny of field captured adults, is also described and figured. Yield losses to a range of beetle densities (1–5 and 10 beetles/head) on millet heads have been estimated to range from 9 to 48% in caged trial experiments. The regression equation generated from these data may be used to establish economic injury thresholds and predict losses resulting from varying beetle densities.

scholarly journals Alteration of the feeding behavior of an omnivorous fish, Scardinius acarnanicus (Actinopterygii: Cypriniformes: Cyprinidae), in the presence of fishing lights

2021 ◽  
Vol 51 (2) ◽  
pp. 131-138
Author(s):  
Lambros Tsounis ◽  
George Kehayias
Keyword(s):  
Content Analysis ◽  
Feeding Behavior ◽  
Feeding Habits ◽  
Fish Predation ◽  
Field Studies ◽  
Stomach Content Analysis ◽  
Elevated Concentration ◽  
Feeding Preferences ◽  
Reported Study ◽  
Commercial Species

Fishing with light is an old and common practice yielding a substantial catch volume globally. Despite the popularity of the method and the efforts to improve it, there is a lack of field studies on the effects of light on the feeding preferences of the attracted fishes. A previous report suggested that purse seine fishing lights can differentiate the feeding preferences of the approaching fishes, such as Atherina boyeri Risso, 1810 in Lake Trichonis (Greece). The presently reported study aims to verify these findings by investigating the diet of the endemic Scardinius acarnanicus Economidis, 1991. The feeding behavior of S. acarnanicus was studied from 2016 to 2019 through gut content analysis, in specimens from Lake Trichonis that came from purse seining with light and specimens caught without light. The same investigation was carried out comparatively in specimens taken by gillnets from two nearby lakes (lakes Ozeros and Amvrakia), where S. acarnanicus is present, but no fishing with light is exercised. The stomach content analysis conducted on 699 S. acarnanicus specimens revealed the intense effect of light on its diet resulting in the alteration of its feeding habits towards fish predation and especially Atherina boyeri. On the contrary, the specimens taken with the use of gillnets, from the three lakes, showed a typical omnivorous feeding behavior. The findings of the presently reported study support the assumption that the elevated concentration of fish close to fishing lights alters the feeding behavior of certain species making them predators. Considering that fishing with light is practiced worldwide, this could be of great ecological significance to the ichthyofauna not only of inland waters but also of marine areas, affecting perhaps several commercial species.

scholarly journals Ant-App-DB: a smart solution for monitoring arthropods activities, experimental data management and solar calculations without GPS in behavioral field studies

F1000Research ◽  
2014 ◽  
Vol 3 ◽  
pp. 311
Author(s):  
Zeeshan Ahmed ◽  
Saman Zeeshan ◽  
Pauline Fleischmann ◽  
Wolfgang Rössler ◽  
Thomas Dandekar
Keyword(s):  
Experimental Data ◽  
Data Management ◽  
Feeding Habits ◽  
Smart Phone ◽  
Field Studies ◽  
Time Of Day ◽  
Direct Access ◽  
Ecological Data ◽  
Solar Position ◽  
Smart Phone Application

Field studies on arthropod ecology and behaviour require simple and robust monitoring tools, preferably with direct access to an integrated database. We have developed and here present a database tool allowing smart-phone based monitoring of arthropods. This smart phone application provides an easy solution to collect, manage and process the data in the field which has been a very difficult task for field biologists using traditional methods. To monitor our example species, the desert ant Cataglyphis fortis, we considered behavior, nest search runs, feeding habits and path segmentations including detailed information on solar position and Azimuth calculation, ant orientation and time of day. For this we established a user friendly database system integrating the Ant-App-DB with a smart phone and tablet application, combining experimental data manipulation with data management and providing solar position and timing estimations without any GPS or GIS system. Moreover, the new desktop application Dataplus allows efficient data extraction and conversion from smart phone application to personal computers, for further ecological data analysis and sharing. All features, software code and database as well as Dataplus application are made available completely free of charge and sufficiently generic to be easily adapted to other field monitoring studies on arthropods or other migratory organisms. The software applications Ant-App-DB and Dataplus described here are developed using the Android SDK, Java, XML, C# and SQLite Database

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