Habitat and Warren Utilization by the European Rabbit, Oryctolagus cuniculus (L.),as Determined by Radio-Tracking

1981 ◽  
Vol 8 (3) ◽  
pp. 581 ◽  
Author(s):  
SH Wheeler ◽  
DR King ◽  
MH Robinson
Keyword(s):  
Breeding Season ◽  
Oryctolagus Cuniculus ◽  
European Rabbit ◽  
Native Vegetation ◽  
Radio Tracking ◽  
Radio Transmitters ◽  
Below Ground

'Rabbits equipped with miniature radio transmitters were located when at rest during the day at Cape Naturaliste, W.A. The study site was open pasture with numerous warrens, surrounded by and containing patches of native vegetation in which there were few warrens. Rabbits for instrumentation were live-trapped on the pasture and were located by radio once per day during each of four tracking periods in February, March-April (non-breeding season), May, and June (breeding season). A total of 31 individuals provided 284 locations, 263 (93%) of which were in the scrub. Of 216 locations in the scrub where the position of the rabbit (above or below ground) was known, 164 (765%) were above ground. Individual rabbits were found at several places within their resting areas, some of which were over 100 m into the scrub. The relevance of these results to current methods of rabbit control is discussed.

scholarly journals Myxomatosis: the occurrence of antibody to a soluble antigen of myxoma virus in wild rabbits, Oryctolagus cuniculus (L.), in Victoria, Australia

1978 ◽  
Vol 81 (2) ◽  
pp. 245-249 ◽  
Author(s):  
J. W. Edmonds ◽  
Rosamond C. H. Shepherd ◽  
I. F. Nolan
Keyword(s):  
Breeding Season ◽  
Infection Rate ◽  
Oryctolagus Cuniculus ◽  
Myxoma Virus ◽  
European Rabbit ◽  
Soluble Antigen ◽  
Relative Timing ◽  
North West ◽  
The North ◽  
Semi Arid

SummaryThe occurrence of antibody to myxoma virus in wild rabbits following epizootics is highest in the semi-arid north-west of Victoria and lowest in temperate southern Victoria. Occurrence ranges up to about 90% in the north-west and to about 70% in the south except on the Western Plains where epizootics are rare and antibody occurrence seldom exceeds 30%.The establishment of the European rabbit flea may be changing the pattern of occurrence of antibody in the north-west by causing spring outbreaks of myxomatosis. It is suggested that the effects of the replacement of a simple recurring system of epizootic and breeding season several months apart by the occurrence of myxomatosis twice in the same year, once coincident with the breeding season, will be complex. The occurrence of detectable antibody may be less dependent on the infection rate and may be dependent to some extent on the relative timing of spring myxomatosis and the breeding season.

Coprophagy in the European Rabbit (Oryctolagus Cuniculus) in Australia.

1955 ◽  
Vol 3 (3) ◽  
pp. 336 ◽  
Author(s):  
K Myers
Keyword(s):  
Oryctolagus Cuniculus ◽  
The Other ◽  
Daily Rhythm ◽  
European Rabbit ◽  
Wild Rabbit ◽  
Seasonal Influence ◽  
Feeding Activities ◽  
Below Ground ◽  
Normal Feature ◽  
Daily Period

Coprophagy is a normal feature in the biology of the wild rabbit (Oryctolagus cuniculus) in Australia. The evidence presented shows that coprophagy occurs normally during the daily period of inactivity when rabbits are below ground. When feeding activities commence in the afternoon on the surface, coprophagy ceases. Evidence suggests that the passage of normal pellets continues throughout the night, the formation and ingestion of soft pellets recommencing when the rabbit population as a whole again moves below ground into the warrens, in the early hours of daylight. Kittens commence ingesting soft pellets as soon as they leave the nests to feed on green grass, although suckling continues for some time. There appears to exist a seasonal influence on the normal daily rhythm in eating of faeces. In winter less time is spent in ingesting soft pellets and more in green-feeding than in autumn and spring. It is suggested that coprophagy assumes its greatest importance to the animal during summer when rabbits are below ground for a greater proportion of the day than at any other season. During summer, also, green feed is scarce and the standing pastures are dry. It is evidently during this season that rabbits are forced to obtain from their food all the nutriment possible. Observations show that the switchover from the production of one type of pellet to the other may be either immediate or delayed.

scholarly journals Intraspecific Variation in Commuting Distance of Marbled Murrelets (Brachyramphus marmoratus): Ecological and Energetic Consequences of Nesting Further Inland

The Auk ◽  
2001 ◽  
Vol 118 (4) ◽  
pp. 1036-1046 ◽  
Author(s):  
Cindy L. Hull ◽  
Gary W. Kaiser ◽  
Cecilia Lougheed ◽  
Lynn Lougheed ◽  
Sean Boyd ◽  
...  
Keyword(s):  
Breeding Season ◽  
Radio Tracking ◽  
Additional Energy ◽  
Brachyramphus Marmoratus ◽  
Nest Sites ◽  
Visitation Rates ◽  
Radio Transmitters ◽  
Additional Energy Expenditure ◽  
Water Birds ◽  
Marbled Murrelets

AbstractRadio transmitters were deployed on Marbled Murrelets (Brachyramphus marmoratus) at Desolation Sound, British Columbia, Canada, during the 1998 breeding season to assess individual variation in distance birds nested from foraging areas, and potential energetic and ecological consequences of commuting those distances. Radio-tracking from a helicopter was used to locate nests, and tracking from the air and boats was used to locate murrelets on the water. Twenty-three nests were found, with active incubation at 16, and active chick-rearing at 12. A minimum of 3 nests fledged chicks, 9 were failures, and 11 were unknown. Nests were at an elevation of 806 ± 377 m and a distance of 39.2 ± 23.2 km (range 12–102 km) from locations on the water. Birds spent an estimated 1.2 ± 0.7 h per day commuting to and from nests (range 0.3–3.5 h per day). It was estimated that birds expended 3,883 ± 2,296 kJ (range 1,200–10,144 kJ) over the breeding season when commuting to those nests, which was 5–41% of their estimated field metabolic-rate during the breeding season. There was no relationship between distance to nests and breeding success. Either Marbled Murrelets can accommodate that additional energy expenditure, or reduce commuting costs by modifying their foraging behavior. They may forage closer to nest sites when provisioning chicks, thereby reducing commuting costs with a payload, or alter nest visitation rates in relation to distance they nest from foraging areas. Nests further inland may also confer advantages that compensate for the added commuting, or birds might replenish body reserves at the end of the breeding season.

The Establishment and Spread of Spilopsyllus Cuniculi (Dale) and Its Location on the Host, Oryctolagus Cuniculus (L.), In the Mallee Region of Victoria.

1976 ◽  
Vol 3 (1) ◽  
pp. 29 ◽  
Author(s):  
RCH Shepherd ◽  
JW Edmonds
Keyword(s):  
Breeding Season ◽  
Oryctolagus Cuniculus ◽  
Myxoma Virus ◽  
The Body ◽  
European Rabbit ◽  
Initial Release ◽  
Breeding Seasons

European rabbit fleas (Spilopsyllus cuniculi) (Dale)) were released into a population of wild rabbits at 7 sites on Pine Plains in the Mallee district of Victoria, Australia, and their establishment and distribution observed monthly for 4 years. After 12 months, including one breeding season, the fleas were found on some rabbits up to 0.8 km from some release sites. By the end of the second breeding season, the distance of spread had doubled, and 4 years after the initial release, including 5 breeding seasons, about 95% of rabbits caught carried S. cuniculi. The furthest spread was about 13 km. When the initial release was made during the summer months, the non-breeding season, spread was slow; in one area, it took 2 years for S. cuniculi to become firmly established. When examples of S. cuniculi infected with myxoma virus were released, no establishment of the disease was observed. The numbers of S. cuniculi per rabbit were low during the first breeding season, but they were high, up to 500/rabbit, after 4 years. In most cases, the fleas were seen on the ears, pinnae and head of the rabbit and occasionally in the body fur. The highest numbers were usually found on pregnant lactating does about to litter, but some bucks also carried a large number.

Observations on Variations in the Sex Ratios of Wild Rabbits, Oryctolagus cuniculus (L.), in Victoria

1981 ◽  
Vol 8 (2) ◽  
pp. 361 ◽  
Author(s):  
RCH Shepherd ◽  
JW Edmonds ◽  
IF Nolan
Keyword(s):  
Sex Ratio ◽  
Breeding Season ◽  
Oryctolagus Cuniculus ◽  
Sex Ratios ◽  
European Rabbit ◽  
Male Preponderance

There was a preponderance of females in wild rabbits collected in Victoria before 1974. This preponderance was established in subadults; in adults the sex ratio tended towards equality or a preponderance of males. The preponderance of females was most marked after the breeding season. A change to male preponderance in the Mallee region coincided with the establishment of the European rabbit flea.

Observations on the dispersal of the European rabbit flea, Spilopsyllus cuniculi (Dale), through a natural population of wild rabbits, Oryctolagus cuniculus (L.)

1971 ◽  
Vol 19 (2) ◽  
pp. 129 ◽  
Author(s):  
RT Williams ◽  
I Parer
Keyword(s):  
Natural Population ◽  
Breeding Season ◽  
Oryctolagus Cuniculus ◽  
Social Groups ◽  
European Rabbit ◽  
Previous Suggestion ◽  
Rabbit Population ◽  
Data Support ◽  
Breeding Seasons ◽  
Time Away

The dispersal of the European rabbit flea, S. cuniculi, through a population of wild rabbits in a 550-acre enclosure was studied. It took 18 months (June 1968 until November 1969), and two rabbit breeding seasons before S, cuniculi was found throughout the population. The number of fleas observed on individual rabbits was much higher during each rabbit bieeding season than in the non-breeding periods. In most cases, the spread of fleas into the various social groups of rabbits occurred during the rabbit breeding season, and appeared to take the form of fleas from an infested group of rabbits being dispersed to a neighbouring uninfested one. This dispersal of S, cuniculi coincided with the dispersal of juvenile rabbits, which were most heavily infested with rabbit fleas at the end of each rabbit breeding season. Three instances of fleas being dispersed to non-neighbouring social groups of rabbits were observed, and these occurred between the 1968 and 1969 rabbit breeding seasons. It is possible that in these cases the fleas were introduced by the dispersal of adult rabbits from warrens infested with S, cuniculi. The data support a previous suggestion that these fleas, on a non-breeding rabbit population, spend most of their time away from the host. in the rabbit burrows.

The ecology of the European rabbit (Oryctolagus cuniculus) in coastal southern Western Australia

1998 ◽  
Vol 25 (2) ◽  
pp. 97 ◽  
Author(s):  
Laurie E. Twigg ◽  
Tim J. Lowe ◽  
Gary R. Martin ◽  
Amanda G. Wheeler ◽  
Garry S. Gray ◽  
...  
Keyword(s):  
Breeding Season ◽  
Adult Female ◽  
Western Australia ◽  
Oryctolagus Cuniculus ◽  
European Rabbit ◽  
Demographic Changes ◽  
High Rainfall ◽  
Nonbreeding Season ◽  
Exponential Rates ◽  
Free Ranging

Demographic changes in three free-ranging rabbit (Oryctolagus cuniculus) populations were monitored over 4 years in southern Western Australia. Peak densities followed periods of high rainfall and pasture biomass. The breeding season was prolonged, often extending from at least April to November, with some pregnancies occurring outside this period. Fecundity, determined by the autopsy of pregnant offsite rabbits and the known length of each breeding season, appeared to be relatively high, with the potential for 34–39 kittens doe-1 year-1; however, because not all females are pregnant in all months, the overall productivity of these populations was estimated at 25–30 kittens adult female-1 year-1. Exponential rates of increase varied from 0.13 to 0.30 during the breeding periods and –0.05 to –0.14 during the nonbreeding season. Kitten survival was generally low whereas some adults lived for more than 5 years. Two patterns of myxomatosis were observed: annual epizootics of the disease (3 of 4 years) and an epidemic that slowly spread over many months. European rabbit fleas were most abundant during winter–spring and attained highest densities on adult female rabbits.

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