scholarly journals Giraffe males have longer suckling bouts than females

2019 ◽  
Vol 101 (2) ◽  
pp. 558-563
Author(s):  
Markéta Gloneková ◽  
Karolína Brandlová ◽  
Jan Pluháček

Abstract In polygynous mammals, females are expected to bias maternal investment in favor of male calves. The mother should invest more in males to enhance their reproductive success in adulthood, or the males require greater investment as they are bigger and stronger than females. In this study, we used nursing duration to compare the difference in the amount of maternal investment provided by females. We compared differences according to sex of the offspring and the influence of calves’ identification by sniffing, using captive giraffes (Giraffa camelopardalis) as a model. Since a high intensity of allonursing (nursing of a nonfilial calf) was reported in giraffes, we also focused on the difference between filial and nonfilial calves. We observed 22 nursing females and 47 suckling calves in four zoological gardens in the Czech Republic from 2007 to 2011. Nursing duration was longer for male calves than for female calves and for calves sniffed by the nursing female regardless whether the calves were filial or nonfilial. We conclude that male calves are more demanding for the amount of investment received and they are more successful in this effort than female calves. Since females provided investment in the same way to filial and nonfilial calves, selection for higher demand for investment by male than by female offspring should be important for their future development. Our results also demonstrate the importance of sniffing for the identification of the suckling calf by the female.

Author(s):  
Jiří Sedlo ◽  
Pavel Tomšík

The paper describes strategic changes in the structure of grapevine (Vitis vinifera L.) varieties grown in the Czech Republic. In 2004–2005, (i.e. after the admission of the Czech Republic into the EU) expenditures associated with restructuralisation and transformation of vineyards amounted for CZK 25,423 thous. The authors examine the development taking place in this domain within the last 50 years (i.e. from 1960 to 2010) and pay detailed attention to the period of 1989 to 2010. The paper analyses reasons of these changes and tries to describe the future development expected after 2010. The current production potential of the Czech Republic are 19,633.45 hectares of vineyards. For the time being, there are in average 1.07 wine growers per hectare of vineyards. As compared with 1960, the acreage of vineyards has doubled up and the number of the most frequent varieties has also increased. Within the period of 1989–1990, four varieties (i.e. Müller Thurgau, Green Veltliner, Italian Riesling and Sankt Laurent) occupied more than 60 % of the total vineyards area in the Czech Republic, whereas at present there are altogether 8 varieties (Müller Thurgau, Green Veltliner, Italian Riesling, Rhein Riesling, Sauvignon, Sankt Laurent, Blaufrankish, and Zweigeltrebe) at the nearly the same acreage.As far as the percentages of Müller Thurgau, Green Veltliner, Italian Riesling and Sankt Laurent varieties is concerned, it is anticipated that their acreages will further decrease, whereas those of Rhein Riesling, Sauvignon, Blaufrankish and Zweigeltrebe are expected to grow. The industry is under pressure of all Porter’s five forces of competition from external sources.


2020 ◽  
Vol 63 (1) ◽  
pp. 1-9
Author(s):  
Jarmila Čelakovská ◽  
Josef Bukač ◽  
Lenka Čáková ◽  
Marie Šimková ◽  
Eva Jandová

Aim: To evaluate the occurrence of melanoma in the period 1996–2017 in East Bohemia region in the Czech Republic. Method: We studied the incidence of melanoma and the age of diagnosis (adjusted calculation) and the parameters such as histology, body site of lesions, the length of the duration of lesions in 2810 patients. Results and conclusion: No change in the occurrence of melanoma and in age of melanoma during this period was found. The difference between men and women was not confirmed in histology, but the difference between men and women was confirmed in the body site of lesion and in the length of duration of lesion. No relation between the length of duration of lesions from which melanoma had originated and its histology was confirmed. The relation was confirmed between histology and body site of melanoma. The relation between the body site and the length of duration of previous lesions was confirmed also. The increasing occurrence of melanoma on the trunk according to the duration of the previous lesions was confirmed.


2009 ◽  
Vol 55 (No. 11) ◽  
pp. 519-533 ◽  
Author(s):  
F. Střeleček ◽  
R. Zdeněk ◽  
J. Lososová

The Common Agricultural Policy has been implemented in order to guarantee the appropriate life quality for farmers and to preserve the European heritage. Costs of its realization amounted to 40% of the EU budget. The EU has not established the same conditions for all member states. The aim of the paper is to assess the influence of agricultural subsidies and the structure of production on the incomes of agricultural holdings and their comparison with the largest producers in the EU with similar production structure. The shift-share analysis is used. Different amount of subsidies according to the type of farming together with increasing subsidy rate may influence the type of farming. Therefore, it may cause a paradox that the structure of subsidies according to the type of farming will stimulate products that are currently suppressed. The difference in subsidies in comparison with the largest producers with a similar structure of agricultural production is significant for the Czech Republic and it is possible to compare it to the increase of the SAPS by 75%.


2012 ◽  
Vol 58 (No. 12) ◽  
pp. 557-565 ◽  
Author(s):  
H. Chládková ◽  
P. Tomšík ◽  
J. Sedlo

The paper describes changes in the structure of varieties grown in the Czech Republic. The authors examine the development taking place in this domain within the last 14 years (i.e. from 1997 to 2010). The paper analyses the reasons of these changes and tries to describe the future development expected after 2010. The article also examines the cost and profitability of growing grapes and wine prices. The current production potential of the Czech Republic is 19 633.45 hectares of vineyards. As compared with 1960, the total acreage of vineyards increased nearly three times and the number of the most frequent varieties has also increased. As far as the percentages of Müller Thurgau, Green Veltliner, Italian Riesling and Sankt Laurent varieties is concerned, it is anticipated that their acreages will further decrease, whereas those of Rhein Riesling, Sauvignon, Lemberger and Zweigeltrebe are expected to grow. The results from the survey of consumer behaviour in the wine market in the CR point to the connection between the structure of the vineyards and consumer demand. Lemberger, Cabernet Sauvignon, Müller Thurgau, Grüner Veltliner, Pinot Blanc, Saint Laurent, Blue Portugal, Chardonnay, Riesling and Bohemia Sekt have been the most popular varieties of the market research.  


2015 ◽  
Vol 61 (4) ◽  
pp. 240-245
Author(s):  
Karolina Lukášová ◽  
Soňa Zimová

Abstract This study focused on bionomics of the ash bark beetle Hylesinus fraxini (Panzer 1779). The study area was at Jílové u Prahy in the Central Bohemian Region of the Czech Republic. In February 2014, three common ash (Fraxinus excelsior) trees were felled and Hylesinus fraxini infestation was subsequently observed from March. Beetles were collected from 20 debarked logs and dissected under stereomicroscope, and their sex was determined. Five logs with bark beetles were placed into photoeclectors. Beetles that emerged were collected and put into the second photoeclector with fresh ash wood to determine whether they would establish the second generation. The analysis showed that each gallery system with a pair of bark beetles contained one male with only one female. If one adult of H. fraxini was found in the gallery system, it was usually female. Therefore, possible polygamy of Hylesinus fraxini was not confirmed in Central Bohemia. Maternal gallery length significantly correlated with the number of eggs laid per female. Offspring beetles did not establish the second generation, as only maturation feeding occurred in fresh wood.


2018 ◽  
Vol 63 (No. 8) ◽  
pp. 305-312 ◽  
Author(s):  
Ptáček Martin ◽  
Ducháček Jaromír ◽  
Schmidová Jitka ◽  
Stádník Luděk

Lamb growth performance traits in relation to parental breeding values (BVs) for these traits were evaluated in a purebred Suffolk sheep population in the Czech Republic. The research lasted over 8 years and included 24 886 lambs. Four relevant parental BVs were observed: BV predicted for lamb live weight direct effect (BVLW-DE), BV predicted for lamb live weight maternal effect (BVLW-ME), BV predicted for lamb musculus longissimus lumborum et thoracis depth (BV-MLLT), and BV predicted for lamb backfat thickness (BV-BT). The lamb live weight (LW; kg), musculus longissimus lumborum et thoracis depth (MLLT; mm), and backfat thickness (BT; mm) were assessed at 100 days of age. A dataset was created using the most current parental BVs for each year (2007–2014) and subsequent growth traits of their lambs in the next season (2008–2015). Linear regressions showed an increased tendency when one point in dam BVs was associated with an increase in lamb LW (0.393 kg; P < 0.01 in BVLW-DE and 0.090 kg; P < 0.05 in BVLW-ME), MLLT (0.340 mm; P < 0.01 in BV-MLLT), or BT (0.243; P < 0.01 mm in BV-BT). Lower (but significant – P < 0.01) values on linear regression were detected for sire BVs, when 0.135 kg of LW, 0.217 mm of MLLT, and 0.214 mm of BT corresponded to 1-point increases of BVLW-DE, BV-MLLT, or BV-BT. This was confirmed by ANOVA evaluation, especially for LW and MLLT traits. Maximal differences (P < 0.05) in lamb LW were 1.84 kg or 0.88 kg regarding to dam or sire BVLW-DE groups. Similarly, the difference (P < 0.05) in lamb MLLT reached 0.82 mm in dam BV-MLLT, while 0.57 mm was detected in sire BV-MLLT groups. These results have practical implications for the objectives of selection schemes used in the Suffolk sheep population in the Czech Republic.


2002 ◽  
Vol 17 (4) ◽  
pp. 213-221 ◽  
Author(s):  
L. Hosák ◽  
R. Bahbouh

SummaryThe increasing cost of pharmaceuticals in the Czech Republic has led to restrictions on the prescription of more expensive atypical antipsychotics. The aim of the study was to compare the costs and outcomes of using risperidone versus classical neuroleptics in treatment of schizophrenia in order to see if there was any cost advantage in restricting use of more recent antipsychotics. Sixty-seven patients (39 women) with a mean age of 34.6 years (S.D. = 9.74) suffering from schizophrenia or schizoaffective disorder were treated with risperidone while 67 patients (39 women) with the same diagnoses with a mean age of 35.7 years (S.D. = 9.91) received standard neuroleptics. Yearly direct medical costs and outcomes (indicated by the average Global Assessment of Functioning score) were assessed retrospectively in an open, intent-to-treat study by abstracting psychiatric outpatient charts. The outcomes were not significantly different between the treatment groups while the risperidone treatment was significantly more expensive than the therapy with standard neuroleptics. This result which appears to be inconsistent with the literature was caused by the cheap labor force in the Czech Republic. The difference between the followed treatments in the direct costs will probably become insignificant in the future when the country’s economy will be more developed.


1994 ◽  
Vol 64 (1) ◽  
pp. 103-113 ◽  
Author(s):  
Gang Lee ◽  
Joseph Hraba ◽  
Frederick Lorenz ◽  
Zdenka Pechacova

2021 ◽  
Vol 12 (2) ◽  
pp. 109-120
Author(s):  
Denisa Nevická ◽  
Juraj Hamuľák ◽  
Mikuláš Krippel

Abstract The article deals with the position of the child’s father in labour relations. The comparative analysis of legislation in the Czech Republic and Slovakia is based not only on labour law, but also on social security law and anti-discrimination law. The authors aim to point out the difference in treatment and answer the fundamental research question – In which country is it easier for a man to reconcile work and family responsibilities?


Author(s):  
Vladimír Hula ◽  
Pavla Šťastná

Carabid beetle samples were obtained from pitfall traps at an abandoned quarry of a limestone massif Hády near Brno. The samples were collected each month between April and September in years 2007–2008. A total of 61 species were registered and represented by 2619 individuals. Similarity of individual areas was evaluated by using the Cluster analysis – the most significant similarity was found in reclaimed sites (99.87%) and control sites (90.52%). The difference in similarity between two observed years came out distinctively (F = 2.906; P = 0.0010). Three species (Cylindera germanica, Licinus cassideus and Aptinus bombarda) from the Red List of Invertebrate Animals of the Czech Republic and one species (Cylindera germanica) affected by the Order 395/1992 Sb. as amended by Decree 175/2006 Sb. were detected among the observed species. The reclaimed land and surrounding field areas left to natural succession were dominated by species of open habitats.


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