Brazilwood sawdust composition confirms different feeding habits of larvae and adult males of the ambrosia beetle Megaplatypus mutatus during excavation

2022 ◽  
Author(s):  
Graziele de Souza Girardi ◽  
Cláudia Alves da Silva ◽  
Márcia Regina Braga
Keyword(s):  
Feeding Habits ◽  
Ambrosia Beetle ◽  
Adult Males ◽  
Megaplatypus Mutatus

scholarly journals Prey selection and feeding habits of the large carnivores in the Southern Kalahari

Koedoe ◽  
1984 ◽  
Vol 27 (2) ◽  
Author(s):  
M. G. L Mills
Keyword(s):  
Prey Selection ◽  
Feeding Habits ◽  
Crocuta Crocuta ◽  
Panthera Leo ◽  
Large Carnivores ◽  
Panthera Pardus ◽  
Older Individuals ◽  
Adult Males ◽  
Acinonyx Jubatus ◽  
Connochaetes Taurinus

Prey selection and feeding habits of lions Panthera leo, spotted hyaenas Crocuta crocuta, cheetahs Acinonyx jubatus and leopards Panthera pardus are investigated. Lions kill mainly adult gemsbok Oryx gazella and blue wildebeest Connochaetes taurinus, tending to select older animals of both species and males in the case of gemsbok. Spotted hyaenas also prey mainly on gemsbok and wildebeest, but select for juveniles, particularly from gemsbok. Cheetahs prey heavily on springbok Antidorcas marsupialis lambs and then on adult males and older individuals. Leopards also prey relatively heavily on springbok, but appear to have a wider diet than cheetahs do. It is concluded that predators generally have a small impact on their prey populations in the southern Kalahari, although in the case of springbok they do appear to influence the structure of the population.

Traslucent pheromone traps increase trapping efficiency of ambrosia beetle Megaplatypus mutatus

2011 ◽  
Vol 30 (6) ◽  
pp. 745-747 ◽  
Author(s):  
Paola González-Audino ◽  
Pablo Gatti ◽  
Eduardo Zerba
Keyword(s):  
Ambrosia Beetle ◽  
Trapping Efficiency ◽  
Pheromone Traps ◽  
Megaplatypus Mutatus

Development of natural waxes dispensers for pheromones and use in mating disruption of the ambrosia beetle Megaplatypus mutatus in poplar (Populus spp) plantations

2016 ◽  
Vol 91 (3) ◽  
pp. 415-421 ◽  
Author(s):  
Esteban Ceriani-Nakamurakare ◽  
Mariel Slodowicz ◽  
Cecilia Carmaran ◽  
Paola Gonzalez-Audino
Keyword(s):  
Mating Disruption ◽  
Ambrosia Beetle ◽  
Megaplatypus Mutatus ◽  
Populus Spp

A STUDY OF THE BLUE GROUSE (DENDRAGAPUS OBSCURUS (SAY)) ON VANCOUVER ISLAND, BRITISH COLUMBIA

1960 ◽  
Vol 38 (4) ◽  
pp. 701-713 ◽  
Author(s):  
C. David Fowle
Keyword(s):  
British Columbia ◽  
Feeding Habits ◽  
Free Water ◽  
Breeding Cycle ◽  
Adult Males ◽  
Seasonal Movements ◽  
Second Growth ◽  
Dendragapus Obscurus ◽  
In Captivity ◽  
Main Item

A study was made of the summer habitat, seasonal movements, fluctuations in populations, population density, breeding cycle, and summer feeding habits of Dendragapus obscurus fuliginosus (Ridgway). During the summer the grouse were found mainly in the early stages of the developing second-growth forests following fire or logging. The birds descended to the lowlands in late March and early April. Most of the adult males returned to the uplands by the end of July, The females and broods left the lowlands by the end of September. There is evidence of several well-marked fluctuations in the numbers of blue grouse in British Columbia since 1904. A density of about.2 adults per acre was recorded in late June and early July. Nesting took place in May and the first young appeared early in June. After the first of July it was not uncommon to see two females with their intermingled broods feeding together. The summer foods of both adults and young were almost entirely vegetable. Grit was the main item in gizzards from birds collected before the middle of July but later it was largely replaced by hard seeds. The grouse were not observed to drink free water except in captivity. There is a rough parallelism between frequency of occurrence of the main items of food in the environment and the proportion of each occurring in the diet.

Variation in the diet of Myotis lucifugus (Chiroptera: Vespertilionidae)

1976 ◽  
Vol 54 (10) ◽  
pp. 1674-1678 ◽  
Author(s):  
J. J. Belwood ◽  
M. B. Fenton
Keyword(s):  
New York ◽  
Nova Scotia ◽  
Aquatic Insects ◽  
Feeding Habits ◽  
Myotis Lucifugus ◽  
Malaise Trap ◽  
Adult Males ◽  
Northern Ontario ◽  
Southern Ontario ◽  
Caddis Flies

By analysis of feces collected from bats in the field, we determined that aquatic insects, particularly chironomid Diptera, made up the major portion of the diet of Myotis lucifugus at sites in southern Ontario, northern New York, and Nova Scotia. The diets of adult males reflected the available insect prey as sampled by a malaise trap, while those of lactating females included proportionally more caddis flies and moths than were present in the malaise trap samples. The diets of subadults of both sexes showed greater variation than those of adults, although chironomids and caddis flies were important components. While we observed the aforementioned pattern at sites in Nova Scotia, northern New York, and southern Ontario, the diets of adult M. lucifugus in northern Ontario were as variable as those of subadults from more southerly areas. We suggest that M. lucifugus is opportunistic in its feeding habits, and that the adults efficiently harvest s warms of aquatic insects, a trait not fully acquired by the young we sampled at the end of August.

scholarly journals Grey seal diet at the southern limit of its European distribution: combining dietary analyses and fatty acid profiles

2007 ◽  
Vol 87 (1) ◽  
pp. 255-264 ◽  
Author(s):  
V. Ridoux ◽  
J. Spitz ◽  
C. Vincent ◽  
M.J. Walton
Keyword(s):  
Fatty Acid ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Individual Variability ◽  
Foraging Strategies ◽  
Grey Seal ◽  
Adult Males ◽  
Southern Limit ◽  
North East ◽  
Conger Eel

The north-east Atlantic grey seal, Halichoerus grypus, is widely distributed along the European coastline from northern Russia to France, with the core population centred around Scotland. To date, very little is known of the diet of the species at the southern margin of the species range. However, because grey seal numbers have been increasing over the last few decades in France, the issue of their potential interactions with coastal fisheries is frequently raised. The diet of grey seal in the Molène Archipelago was investigated by combining scat, stomach content and fatty acid analyses, since all three approaches have complementary potentials to reveal feeding habits of a predator. A total of 145 scats mostly of moulting adult males, 14 stomach contents of yearlings and 14 blubber samples from animals of all ages were analysed following standard methodologies. Scats revealed a diet mainly constituted of 50.6% by mass (M) of wrasse, Labridae (mostly Labrus bergylta), 20.7%M conger eel, Conger conger, and 11.9%M sea bass, Dicentrarchus labrax. Stomach contents were made up of 52.3%M cuttlefish, Sepia officinalis, 9.5%M sole, Solea solea, and 9.4 %M conger eel. All these prey are different from the diet observed in core areas. Fatty acid analysis from the blubber confirmed that the diet differed between the Molène Archipelago and one of the Scottish breeding sites. It also showed that most of the inter-individual variability was explained by variation in seal body masses, which could be linked to behavioural ontogeny of foraging strategies. Most of the prey species identified in the food of the grey seal in Brittany are also targeted by professional and/or recreational fisheries in the area; additionally, several prey size-ranges also partly overlap with marketed size-ranges for several species.

scholarly journals Feeding ecology of Auchenipterichthys longimanus (Siluriformes: Auchenipteridae) in a riparian flooded forest of Eastern Amazonia, Brazil

2011 ◽  
Vol 9 (3) ◽  
pp. 629-636 ◽  
Author(s):  
Tiago Magalhães da Silva Freitas ◽  
Vitor Hudson da Consolação Almeida ◽  
Roberta de Melo Valente ◽  
Luciano Fogaça de Assis Montag
Keyword(s):  
Amazon Basin ◽  
Diet Composition ◽  
Trophic Ecology ◽  
Feeding Habits ◽  
Biological Information ◽  
Adult Males ◽  
Terrestrial Invertebrates ◽  
Young Males ◽  
Young Females ◽  
Terrestrial Vertebrates

Feeding habits of the midnight catfish Auchenipterichthys longimanus collected in rivers of the Caxiuanã National Forest (Eastern Amazonia, Brazil) were investigated through the different hydrological periods (dry, filing, flood and drawdown). A total of 589 specimens were collected throughout seven samplings between July 2008 and July 2009, of which 74 were young males, 177 adult males, 89 young females and 249 adult females. The diet composition (Alimentary index - Ai%) was analyzed by a non-metric multidimensional scaling (nMDS) and by the analysis of similarity (ANOSIM), which included 37 items grouped into nine categories (Aquatic insects, Other aquatic invertebrates, Arthropods fragment, Fish, Plant fragment, Seeds, Terrestrial insects, Other terrestrial invertebrates, and Terrestrial vertebrates). We also calculated the niche breadth (Levins index) and the repletion index (RI%). Differences in the diet composition between hydrological seasons were registered, primarily on diet composition between dry and flood season, but changes related with sex and maturity were not observed. The midnight catfish showed more specialists feeder habit in the flood period (March 2009) and more generalist habits in the dry season (November 2008). The amount of food eaten by A. longimanus based on repletion index (RI%), did not differ significantly from sex and maturity. However, we evidenced differences in RI% when comparing the studied months. These results provide important biological information about the trophic ecology of auchenipterids fish. In view of the higher occurrence of allochthonous items, this research also underpins the importance of riparian forests as critical environments in the maintenance and conservation of wild populations of fish in the Amazon basin.

Summer food and feeding of the ruddy duck in Manitoba

1973 ◽  
Vol 51 (12) ◽  
pp. 1293-1297 ◽  
Author(s):  
W. R. Siegfried
Keyword(s):  
Feeding Habits ◽  
Adult Males ◽  
Female Adult ◽  
Significant Difference ◽  
Food And Feeding ◽  
Animal Material ◽  
Males And Females ◽  
Ruddy Ducks ◽  
Ruddy Duck ◽  
Main Food Item

The food and feeding habits of adult and juvenile ruddy ducks (Oxyura jamaicensis) in southwestern Manitoba were studied during June–August 1971. Animal material predominated in the diets of the birds. The basic diets of adult males and females, as well as ducklings of all ages, were similar. Larval and pupal midges (Tendipedidae), especially Chironomus, constituted the main food item. The quantity of grit in the gizzards increased with the age of the ducklings. There was no significant difference between the average quantities of grit retained by male and female adult birds. Ruddy ducks, of all ages, forage almost exclusively by diving and straining food organisms from the soft muddy ooze on the bottoms of ponds. Foraging ruddy ducks appear to select areas relatively rich in midge larvae.

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