Opportunistic feeding by desert bats (Myotis spp.)

1976 ◽  
Vol 54 (4) ◽  
pp. 526-530 ◽  
Author(s):  
M. B. Fenton ◽  
G. K. Morris
Keyword(s):  
Feeding Behavior ◽  
Food Resources ◽  
Selective Feeding ◽  
Insectivorous Bats ◽  
Black Light ◽  
Opportunistic Feeding

By using a 'black light' and playback of sounds made by foraging insectivorous bats, we examined opportunistic feeding behavior of bats near Camp Verde, Arizona, between 1 and 10 June 1975. Bats were significantly most active during 15-min periods when the light was on and insects were aggregated over it. Bats feeding over the light selectively pursued and captured larger insects, apparently ignoring the smaller ones. Bats did not respond to sounds simulating feeding buzzes of bats, but showed a slight response to the foraging sounds of other bats. Opportunistic feeding by insectivorous bats allows effective exploitation of patchily distributed food resources and can lead to selective feeding when 'hatches' of insects are involved. Opportunistic feeding is not incompatible with selective feeding, and may eventually be established as a strategy common to most insectivorous bats.

Effect of the last diet on the selective feeding behavior of heifers

2005 ◽  
Vol 76 (4) ◽  
pp. 387-390
Author(s):  
Michiru FUKASAWA ◽  
Hideharu TSUKADA ◽  
Takami KOSAKO ◽  
Daisuke KOHARI
Keyword(s):  
Feeding Behavior ◽  
Selective Feeding

scholarly journals Trophic behavior strategy of phytophagous insects (an example of leaf beetles Coleoptera, Chrysomelidae)

2016 ◽  
Vol 5 (4) ◽  
pp. 48-54
Author(s):  
Sergey Ivanovich Pavlov
Keyword(s):  
Feeding Behavior ◽  
Behavioral Responses ◽  
Food Resources ◽  
Trophic Relationships ◽  
Phytophagous Insects ◽  
Leaf Beetles ◽  
Behavior Strategy ◽  
Active Life ◽  
The Right

The feeding behavior and feed spectra of the active life phases (imago and larvae) of 25 background species of leaf beetles (Coleoptera, Chrysomelidae) were studied in Samara region during 1974-2014. The analysis of trophic relationships members of these insects associated with about 400 species of higher (angiosperms) plants from 50 families and 2 classes is interesting not only in terms of their agricultural value, but also when considering bioecology issues (clarification of possible contacts of the organism with the environment). The strategy of the feeding behavior of phytophagous is a complex, which includes 20 episodes of behavioral responses, focuses on the search and acquisition of food and requires choosing the right direction of the influences. Food specialization provides (in order to avoid competition between types of consumers) the existence a rich assortment of food resources and different ways of their use (herbivore and detritivore, optional - food pollen and predation, cannibalism - only 8 types). There are two groups of plants consumed by phytophagous. They are basic (normally developing larvae and imago) and additional (used by imago in unfavorable periods) plants. The search for insect food consists of three types of reactions. They are distant (coarse and fine setting) and contact reactions. Agricultural importance of leaf beetles is determined by not only damage to plants, but also the action stimulating the productivity of phytocoenosis.

Selective feeding behavior of calves is affected by basal diet

2005 ◽  
Vol 76 (2) ◽  
pp. 171-177 ◽  
Author(s):  
Michiru FUKASAWA ◽  
Hideharu TSUKADA ◽  
Takami KOSAKO
Keyword(s):  
Feeding Behavior ◽  
Basal Diet ◽  
Selective Feeding

Stable isotopes and stomach content analyses indicate omnivorous habits and opportunistic feeding behavior of an invasive fish

2019 ◽  
Vol 53 (3) ◽  
pp. 365-381
Author(s):  
Débora Reis de Carvalho ◽  
Diego Marcel Parreira de Castro ◽  
Marcos Callisto ◽  
Antônio Júlio de Moura Chaves ◽  
Marcelo Zacharias Moreira ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Feeding Behavior ◽  
Stomach Content ◽  
Invasive Fish ◽  
Content Analyses ◽  
Opportunistic Feeding

Food and Inferred Feeding Behavior of Northern Sand Lance (Ammodytes dubius)

1973 ◽  
Vol 30 (3) ◽  
pp. 451-454 ◽  
Author(s):  
J. S. Scott
Keyword(s):  
Feeding Behavior ◽  
Fish Larvae ◽  
Calanus Finmarchicus ◽  
Gut Contents ◽  
Selective Feeding ◽  
Filter Feeding ◽  
Sand Lance ◽  
Food Items

Gut contents of northern sand lance (Ammodytes dubius) were identified, measured by volume, and compared to volumetric analyses of plankton hauls. A. dubius is a plankton feeder, copepods (mainly Calanus finmarchicus) constituting about 65% of its food by volume. It combines filter feeding with selective feeding on larger food items such as euphausiids and fish larvae.

scholarly journals Identification of Potential Metabolites Mediating Bird’s Selective Feeding on Prunus mira Flowers

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Shanshan Zhang ◽  
Hong Ying ◽  
Gesang Pingcuo ◽  
Shuo Wang ◽  
Fan Zhao ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Yield Potential ◽  
Amino Acid Derivatives ◽  
Selective Feeding ◽  
Targeted Metabolomics ◽  
Salvianolic Acid ◽  
Salvianolic Acid A ◽  
Intraspecific Variations ◽  
Sampling Locations ◽  
Widely Targeted Metabolomics

In peach orchards, birds severely damage flowers during blossom season, decreasing the fruit yield potential. However, the wild peach species Prunus mira shows intraspecific variations of bird damage, indicating that some of the wild trees have developed strategies to avert bird foraging. Motivated by this observation, we formulated the present study to identify the potential flower metabolites mediating the bird’s selective feeding behavior in P. mira flowers. The birds’ preferred (FG) and avoided (BFT) flowers were collected from wild P. mira trees at three different locations, and their metabolite contents were detected, quantified, and compared. The widely-targeted metabolomics approach was employed to detect a diverse set of 603 compounds, predominantly, organic acids, amino acid derivatives, nucleotide and its derivatives, and flavones. By quantitatively comparing the metabolite contents between FG and BFT, three candidate metabolites, including Eriodictiol 6-C-hexoside 8-C-hexoside-O-hexoside, Luteolin O-hexosyl-O-hexosyl-O-hexoside, and Salvianolic acid A, were differentially accumulated and showed the same pattern across the three sampling locations. Distinctly, Salvianolic acid A was abundantly accumulated in FG but absent in BFT, implying that it may be the potential metabolite attracting birds in some P. mira flowers. Overall, this study sheds light on the diversity of the floral metabolome in P. mira and suggests that the bird’s selective feeding behavior may be mediated by variations in floral metabolite contents.

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