Wyniki wyszukiwania

1

The water bird community on fishponds at Golysz in the breeding season and its differentiation

100%

Gwiazda R.

Acta Hydrobiologica

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1995

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tom 37

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nr Suppl.1

2

Breeding-season density of Fiscal Shrike [Lanius collaris] in Lesotho

86%

Kopij G.

Biological Letters

|

2004

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tom 41

|

nr 2

77-85

3

Notes on calls of the Yellow-breasted Boubou [Laniarius atroflavus] during the breeding season in NW Cameroon

86%

Riegert J., Pribylova A., Sedlacek O.

Biological Letters

|

2004

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tom 41

|

nr 2

181-184

4

Impact of breeding region and season on the content of some trace elements and heavy metals in the hair of cows

86%

Cygan-Szczegielniak D., Stanek M., Giernatowska E., Janicki B.

Folia Biologica

|

2014

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tom 62

|

nr 3

5

Low recapture rate in PIT marked urban populations of the common toad

86%

Mazgajska J., Mazgajski T. D.

Polish Journal of Ecology

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2016

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tom 64

|

nr 4

Individual marking is necessary for determining various elements of species ecology, but toe-clipping — a method frequently used in amphibian studies, is recently being questioned. Three water bodies (of 0.3 to 1.5 ha in size) used by common Bufo bufo for breeding, located within a large city (Warsaw, Central Poland), were chosen for the study. Captured toads had Passive Integrated Transponders (PIT) subcutaneously implanted under laboratory conditions. Marked toads were searched in consecutive breeding seasons. The recapture rate of males in particular ponds was up to 13% — much lower than in other studies carried out in non-urban habitats. 77% of re-trapped individuals were found in the next season after tagging. There were no differences in the frequency of re-trapped individuals in relation to the toe-clipping treatment, as some marked individuals had part of the toe (two phalanges) clipped for skelotochronological analyses. An individual from this group was observed to have regenerated the clipped toe after one year. We did not find any indication of better body condition among the re-trapped individuals when comparing them to the marked toads at the time they were first captured. The important advantage of PIT tagging is the fact that all individuals are marked in the same way and their handling is similar. This makes it possible to compare various demographic parameters (growth rate, survival etc.). In addition, the number of animals that can be permanently marked using PITs is several times higher than through the use of codes resulting from the clipping of fingers and toes.

6

Scent marking in Eurasian beaver Castor fiber during winter

86%

Rosell F., Bergan F.

Acta Theriologica

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2000

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tom 45

|

nr 2

The Eurasian beaver Castor fiber Linnaeus, 1758 deposit castor fluid (castoreum) and/or anal gland secretion at scent mounds in their territory year round. We investigated the hypothesis that during winter Eurasian beavers may intensify use of scent, in year round ice-free water systems, during the breeding season. This study showed that the median number of scent marks in 7 territories increased significant ly in the breeding (January-March 1996}, compared to the nonbreeding portion of winter (October- -Decemher 1995), which is consistent with our prediction. The median number of scent marks was significantly higher during February, compared to January and March. This may be due to females approaching or being in oestrous in our study area during February. Further studies are, however, needed to clarify how information in scent marks are coded and transmitted during the breeding season.

7

GnRH-PGF 2a and PGF 2a-PGF 2a synchronization in Akkaraman cross-bred sheep in the breeding season

86%

Rozkurt Ataman M., Akoz M.

Bulletin of the Veterinary Institute in Puławy

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2006

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tom 50

|

nr 1

8

Winter aggregations, Dehnel effect, and habitat relations in the Suisun shrew Sorex ornatus sinuosus

86%

Hays W. S. T., Lidicker W. Z.

Acta Theriologica

|

2000

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tom 45

|

nr 4

A live-trapping study on Suisun shrews Sorex ornatus sinuosus Grinnell, 1913, an endangered subspecies, was performed during the non-breeding season along the edge of a tidal marsh in California. During the winter, these shrews lived in distinct social aggregations composed of a single adult male, several adult females, and subadults. These groups remained stable even when the adult male died. As the breeding season approached, these groups were invaded by numerous adult males resulting in a nearly complete change in group membership. At the end of the breeding season, adult body mass declined by 30 to 40% (Dehnel Effect), Shrews reached high densities along the marsh/grassland ecotone, but the precise locations of social groups seemed unrelated to the presence of particular plant species or to the amphipod food supply. Subadult males wintered mostly outside of social groups in the marsh below high tide level. Conservation efforts need to locus on preserving the tidal marsh ecotone without promoting contact wilh the upland subspecies.

9

Male aggressive behaviour and the role of delayed plumage maturation in the red-breasted flycatcher Ficedula parva [Bechstein, 1792] during the breeding season

72%

Mitrus C.

Biological Letters

|

2007

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tom 44

|

nr 1

51-59

10

Temporal pattern of vocal activity of the Water Rail Rallus aquaticus and the Little Crake Porzana parva in the breeding season

72%

Polak M.

Acta Ornithologica

|

2005

|

tom 40

|

nr 1

21-26

In the Water Rail the patterns of the two main types of vocalization were quite different: the announcement call was uttered throughout the breeding season with two peaks, one in April and the other in early June, but the courtship call occurred only in the pre-laying period. The vocalization period of the Little Crake is short but intensive, peaking before the start of incubation. In general, Water Rails produced more vocalizations in the evening than in the morning. The vocal activity of the Little Crake peaked at dawn. In both species a peak in vocal output occurred shortly before sunrise and before sunset.

11

Comparison of the effect of cronolone sponges and PMSG or cloprostenol on estrous induction in Turkish Saanem goats

72%

Dogan I., Konyali A., Gunay U., Yurdabak S.

Polish Journal of Veterinary Sciences

|

2008

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tom 11

|

nr 1

29-34

The efficiency of cronolone sponges in combination with either pregnant mare serum gonadotropin (PMSG) or cloprostenol (PGF2(2α) for inducing and synchronizing the estrous cycle in Turkish Saanen does was investigated during the transition from non-breeding to breeding season. All does (n=80) were treated with 20 mg cronolone sponges for 11 days and divided into 4 equal groups. In addition, each doe received an intramuscular injection of either 1.5 ml sterile saline solution, 0.075 mg PGF2α 500 IU PMSG or 500 IU PMSG and 0.075 mg PGF2α, 24 h before the sponge removal. Cervical artificial insemination (AI) with frozen-thawed semen was performed once 16 h after the detection of the first accepted mount. The total estrous response for the first 24 ± 4 h, total estrous response within 96 h, time to onset of the induced estrus, duration of the induced estrus and pregnancy rate was found to be 75.0%, 97.5%, 31.4 ± 1.2 h, 29.3 ± 1.2 h, and 33.3%, respectively. There were significant differences between the first two groups and the last two groups in terms of the onset of induced estrus and estrous response at the first 24 ± 4 h (P < 0.05). These results indicate that the use of cronolone/PMSG was more effective than cronolone/PGF2α in the attainment of early and compact induction of estrus in Turkish Saanen does.

12

Larval development and settlement of the barnacle Amphibalanus amphitrite from the Red Sea: Influence of the nauplii hatching season

72%

Al-Aidaroos A. M., Satheesh S.

Oceanological and Hydrobiological Studies

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2014

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tom 43

|

nr 2

13

Blackbirds mate choice: dependence of male social status on age and morphology in an urban population of the European Blackbird, Turdus merula L.

72%

Jarska K., Jankowiak L., Smietana P., Wysocki D.

Polish Journal of Ecology

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2015

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tom 63

|

nr 3

The differences in morphology and age between single and paired males of an urban population of the European Blackbirds (Turdus merula) were studied in Żeromski park in the city of Szczecin (NW Poland) spanning 11 breeding seasons since 1998. The proportion of single to paired males in different age groups was established. Also, morphology features like the length of tail, wing and tarsus of 45 single males and 475 paired males were collected. We found that old males (after second year of life) formed pair bonds more often than the young males (in their second year of life). The probability of being a paired male in case of young males increased along with the tarsus length.

14

Habitat use by endangered Sichuan Partridges Arborophila rufipectus during the breeding season

72%

Liao W. B., Fuller R. A., Hu J. C., Li C.

Acta Ornithologica

|

2008

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tom 43

|

nr 2

179-184

A detailed understanding of habitat associations of threatened species is essential for the development of sound conservation and habitat management plans. The globally endangered Sichuan Partridge is endemic to montane southwestern China, where it inhabits subtropical broadleaf forest. Its use of various habitats within the forest is poorly known. Habitat use by Sichuan Partridges in Laojunshan Nature Reserve, Sichuan, was studied during the breeding season (April-October). Habitat characteristics at feeding places were compared with randomly selected sites. Auditory detection was used during transect surveys of calling males to locate birds and their feeding scrape sites. Partridges were recorded in primary and secondary broadleaf forest, but not in coniferous plantations or farmland and settlements. Birds occurred between 1400 and 1800 m a. s. 1., typically on the ground with a gentle slope of between five and 15 degrees, close to paths and water sources. The habitats used by Sichuan Partridges differed from the random sites in that they had a denser shrub layer, greater tree cover, thicker deciduous leaf depth and lower abundance of bamboo. Principal Components Analysis identified factors interpretable as concealment, topography and leaf litter depth as key axes of variation in Sichuan Partridge habitats. We suggest that habitat management plans incorporating this new information can now focus more effectively on identifying, protecting and restoring those sites within protected areas that are most suitable for the Sichuan Partridge.

15

Nest types and nest-site selection of the Little Bittern Ixobrychus minutus breeding in fishpond habitat in South-Eastern Poland

72%

Flis A.

Polish Journal of Ecology

|

2016

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tom 64

|

nr 2

The paper describes chosen habitat conditions determining the occurrence and nesting of the Little Bittern Ixobrychus minutus and their effect on the nest type (breeding nest BN or mock nest MN). The Little Bittern is a monogamous bird whose male can build a couple of nests during the breeding season. The main questions posed in this work are: (1) what habitat is chosen for the nesting site, and (2) do habitat conditions influence the nest type? The study was carried out in a fishpond complex in the Lasy Janowskie Landscape Park (SE Poland) during the breeding seasons of 2010−2012. All 44 nests (23 BN and 21 MN) were built in a waterside belt of perennial Common Reed Phragmites australis. All nests were built at sites with water depth between 11 and 101 cm. The type of the nest did not depend on the date when it was built during the breeding season. There was a significant difference in the width of the nests between breeding and mock nests. Moreover, obtained results showed a significant influence of the reed belt height and reed stem diameter on the nest type. Further studies on the Little Bittern's nesting habitat, protection of suitable wetlands, and proper water management are important for the conservation of this vulnerable species.

16

Changes in testicular weight and volume of American mink (Neovison vison) before and during mating season

72%

Lasota B., Jarczynska A., Felska-Blaszczyk L., Laszczynska M., Seremak B., Skuratko A.

Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry

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2013

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tom 16

|

nr 3

17

Dynamics of male dominance of southern elephant seals [Mirounga leonina] during the breeding season at King George Island

72%

Carlini A. R., Poljak S., Daneri G. A., Marquez M. E. I., Plotz J.

Polish Polar Research

|

2002

|

tom 23

|

nr 2

153-159

18

Birds inhabiting organic and conventional farms in Central Poland

72%

Wolnicki K., Lesinski G., Rembialkowska E.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2009

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tom 52A

|

nr 1-2

19

Spermatozoan numbers and characteristics of associated organs in male white-tailed deer during the breeding season

72%

Peles J. D., Rhodes O. E., Smith M. H.

Acta Theriologica

|

2003

|

tom 48

|

nr 1

Short-term changes in testicular spermatozoa, testes weight, testes length, epididymes weight, epididymal spermatozoa, and body weight of adult and yearling male white-tailed deerOdocoileus virginianus (Zimmermann, 1780) were examined over a 9-week period that included the peak of the breeding season in South Carolina. Mean values for all characteristics were significantly greater in adults compared to yearlings. Values for reproductive characteristics tended to be highest during the last week in October or the first week in November and decreased over the course of the investigation. Body weight of adults decreased from late October through early December, whereas body weight of yearlings fluctuated only slightly throughout the 9-week period. Significant correlations were observed among all reproductive characteristics and body weight was highly correlated with all characteristics except testicular spermatozoa. Values for reproductive characteristics differed significantly between the right and left sides of the reproductive tracts. Results demonstrate the occurrence of short-term changes in reproductive capabilities of white-tailed deer that are relevant for the development of management strategies for this species

20

Induction of multiple births in Akkaraman cross-bred sheep synchronized with short duration and different doses of progesterone treatment combined with PMSG outside the breeding season

72%

Akoz M., Bulbul B., Bozkurt Ataman M., Dere S.

Bulletin of the Veterinary Institute in Puławy

|

2006

|

tom 50

|

nr 1

Ograniczanie wyników

The water bird community on fishponds at Golysz in the breeding season and its differentiation

Breeding-season density of Fiscal Shrike [Lanius collaris] in Lesotho

Notes on calls of the Yellow-breasted Boubou [Laniarius atroflavus] during the breeding season in NW Cameroon

Impact of breeding region and season on the content of some trace elements and heavy metals in the hair of cows