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EN
In a study to investigate the growth and yield performance of wheat varieties, it was observed that some plants showed some leaf yellowing and overall stunted growth. Upon uprooting, some unidentified creamy white larvae were observed. A trial was later conducted to ascertain the extend of infestation by these larvae and eventually identify them using morphological measurements and pictorial comparisons. The study was conducted in the Research farm of the University of Bamenda, Cameroon in 2023. Results revealed that wheat plants infested by the weevil had many yellow leaves and dry old leaves. The roots were severely damaged and the plants did not produce spikes. The infested plants were easy to uproot. Larval and adult infestation rate were 35.0% and 12.5%, respectively. Larval and adult body length were 27.34 mm and 13.21 mm, respectively. The larva and adults were identified as the African Black Beetle ABB Heteronychus arator (Fabricius, 1775) (Coleoptera: Scarabaeidae). Thus, the ABB is reported for the first time as a damaging pest of wheat in Cameroon. Morphological and pictorial identification of the ABB are supported by established keys. The current study ignites research need into management of ABB and its ecological interactions with biotic and abiotic factors.
EN
One hundred and twenty asterisci were obtained from 30 specimens each of Cyprinion kais and Cyprinion macrostomum. Significant relationships between otolith mass and the three fish lengths (TL, SL, and FL) were attained for C. kais. Similar associations were obtained for OL and the three fish lengths of C. macrostomum. For C. kais,the highest in the relation between otolith mass, hereafter referred to as OM, and fish fork length, henceforth knownas FL (0.5894). The lowest coefficient of determination wasobserved between otolith width, hereafter called OW, and standard fish length, hereafter referred to as SL (0.2861). For C. macrostomum, the highest coefficient of determination was attained for the relation between OL and FL (0.7280) and the lowest for the relationship between OM and TL (0.1717).The analysis shows that evaluations of the body size of the two fish species investigated through biometric studies ofotoliths are trustworthy.
EN
Purpose: The main purpose of this study to analyze the coordination, propulsion and non-propulsion phases in the 100 meters breaststroke race. Methods: Twenty-seven male swimmers (15.7±1.98 years old) with the total body length (TBL) of 247.0±10.60 [cm] performed an all-out 100m breaststroke bout. The bouts were recorded with an underwater camera installed on a portable trolley. The swimming kinematic parameters, stroke rate (SR) and stroke length (SL), as well as the coordination indices based on propulsive or non-propulsive movement phases of the arms and legs were distinguished. Results: Swimming speed (V 100surface breast ) was associated with SL (R=0.41, p<0.05) and with TBL tending towards statistical significance (R=0.36, p<0.07), all relationships between the selected variables in the study were measured using partial correlations with controlled age. SL interplayed negatively with the limbs propulsive phase Overlap indicator (R=-0.46, p<0.05), but has no significant relationship to the non-propulsion Glide indicator. Conclusions: The propulsion in-sweep (AP3) phase of arms and their non-propulsion partial air recovery (ARair) phase interplayed with V 100surface breast (R=0.51, p<0.05 and 0.48 p<0.05) respectively, displaying the importance of proper execution of this phase (AP3) and in reducing the resistance recovery phases in consecutive ones.
PL
Wstęp i cel: W literaturze tematu dostępne są dyskusyjne wzmianki o wpływie czynników klimatycznych na rozwój płodu i efektów wpływu tych działań na kształtowanie się poszczególnych parametrów antropometrycznych u noworodków. Głównym celem pracy jest ocena wpływu czynników klimatycznych na kształtowanie się wybranych parametrów antropometrycznych noworodka, w aspekcie zmienności sezonowej. Materiał i metody: Z kart historii rozwoju noworodka, metodą wywiadu medycznego określono: wiek ciążowy noworodka. Informacje o stanie noworodka po urodzeniu, czyli: urodzeniową masę ciała, długość ciała, obwód głowy. Pomiary antropologiczne noworodków wykonano posługując się ogólnie przyjętą metodyką pomiarową (Schultz,1929; Scammon i Calkins,1929; Bożiłow i Sawicki,1980; Bożiłow i Malinowski,1997). Wyniki: Badanie wpływu czynników klimatycznych na kształtowanie się wymienionych parametrów antropometrycznych wśród badanych noworodków nie wykazało istotnych statystycznie różnic w aspekcie zmienności sezonowej. Wniosek: Termin prokreacji nie wpływa znacząco na kształtowanie się parametrów antropometrycznych noworodka.
EN
Introduction and aim: In the literature are available discussion mention of the impact of climatic factors on fetal development and the effects of the impact of these activities on the development of specific anthropometric parameters in newborns. The main aim of this study is to assess the impact of climatic factors on the development of selected neonatal anthropometric parameters, in terms of seasonal variations. Material and methods: From the pages of history postnatal development, determined by medical history: gestational age newborn. Information about the state of the newborn after birth, namely: birth weight, body length, and head circumference. Anthropological measurements were performed using neonatal generally accepted measurement methodology (Schultz,1929; Scammon and Calkins,1929; Bożiłow and Sawicki,1980; Bożiłow and Malinowski,1997). Results: Research on the influence of climatic factors on the development of these anthropometric parameters of newborns tested showed no statistically significant differences in the aspect of seasonal variations. Conclusion: Selected polymorphisms of genes ASPM and MCPH one should be explored in the aspect of shaping structural and functional characteristics of the brain.
EN
The aim of the study was to estimate the acceleration of birth parameters: body length, body weight, head and chest circumference of Lublin newborns as a response to environmental changes observed since 1964 till 2001. The environmental conditions changes were characterized by: health care standards, average consumption of selected foodstuffs, furnishings, level of education and income of households. The systematic, statistically significant increase of birth length was observed within the whole studied period. Improvement of indices, expecially concerning health care, in front of an average income decrease in Lublin voivodship comparing to Poland in the same period, should be emphasized.
EN
Almost six years after the first finding of the round goby Neogobius melanostomus (Gobiidae) in the Netherlands, several specimens of this invasive Ponto-Caspian benthic fish were also recorded in the Belgian part of the River Scheldt and in the Albert Canal. This is the first record of the round goby in Belgium.
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The growth of the scale radius was followed in seven fish species (roach, bream, rudd, humped rockcod, perch, halibut, and zander). The results obtained by analyzing a total of 11304 individuals were compared with corresponding data on the standard length growth of each species. The mathematical description of growth was done with the following six models: the von Bertalanffy equation, the Ford-Walford formula, the second order polynomial, the Gompertz model, the power function, and the modified power function. Data on length growth and length growth versus scale radius growth, which were used to determine the scale radius growth of each species, were taken from the literature. The growth of both the scale radius and body length of the species analyzed was fairly uniform: the increment ratios, averaged for the entire growth period, were close to 0.9. However, slightly higher values, hence more uniform growth, were recorded in radius growth (0.93) than in fish length growth (0.90). The fish length increments in the first two years of life were lower than the scale radius increments during the same time.
PL
Celem niniejszej pracy było zbadanie przebiegu wzrostu promienia łuski różnych gatunków ryb i jego porównanie ze wzrostem długości. Materiałem były dane o wzroście długości 7 gatunków: płoci, leszcza, wzdręgi, notote- nii, okonia, halibuta i sandacza (tab. 1), uzyskane przez różnych autorów metodą odczytów wstecznych. Na podstawie przytaczanych zależności L/R określano wielkości promienia łuski w kolejnych latach życia. Wzrost zarówno promienia łuski, jak i długości ciała (rys. 1, 2, 3, 4) scharakteryzowano matematycznie przy zastosowaniu 6 modeli wzrostu: równania von Bertalanffy’ego, formuły Forda-Walforda, wielomianu 2 stopnia, modelu Gompertza, funkcji potęgowej i zmodyfikowanej funkcji potęgowej (tab. 3). Określono również dokładność matematycznego opisu wzrostu za pomocą różnych modeli, a także różnice wartości parametrów poszczególnych modeli powstające przy matematycznej charakterystyce wzrostu promienia łuski i długości ciała. Uzyskane wyniki wskazują na dość duże podobieństwo wzrostu promienia łuski i długości ciała tego samego gatunku. Różnice sprowadzały się do nieco bardziej równomiernego wzrostu promienia łuski w porównaniu ze wzrostem długości ciała. Również spadek przyrostów promienia łuski w 1 i 2 roku życia był wyraźnie mniejszy, niż spadek przyrostów długości (tab. 2). Stosowane modele opisują wzrost długości nieco dokładniej, niż wzrost promienia łuski (tab. 4), ale różnica dokładności jest nieznaczna (przeciętna procentowa różnica wyniosła 1,72% w przypadku wzrostu promienia łuski i 1,61% w odniesieniu do wzrostu długości).
EN
Background. The purpose of this study was to identify mathematical equations describing changes in a flatfish body shape along its longitudinal axis. The initial function for the description of a cross-section contour is the ellipse equation including a factor deforming the symmetry with respect to one of axes. Such equations may find their use in fisheries engineering and food-fish processing. Materials and Methods. The morphometric examination of the fish raw material was carried out in order to check whether the proposed function meets expectations and draws a curve. The model fish species used was flounder, Platichthys flesus (L.). Results. The mathematical equation describing changes in a cross-section contour of flatfish body shape along its longitudinal axis. The high value of correlation coefficients (r > 0.99) showed that a hypothetical curve matches experiment results quite well. The equation describing the shape of a flatfish body cross-section contour can be defined by means of the ellipse equation including a factor deforming the symmetry with regard to one of its axes. The function represented by equation (8) draws a curve that follows the contour of the fish cross-section. Conclusion. The shape of flounder, defined in the presently reported study may have importance for sustainable and responsible fisheries, helping to design more selective fishing gear. It can also be used in food-fish engineering for designing more effective fish-processing machinery.
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A large lobopod, Jianshanopodia decora gen. et sp. nov., with body length (excluding appendages) about 220 mm from the Lower Cambrian Haikou section, near Kunming, Yunnan, southwest China, shows a mixture of characters, including features of the lobopod Xenusion Pompeckj, 1927, e.g., a large cylindrical body with annulations, stout and strong lobopod appendages each bearing bases of serial tubercles, and of Aysheaia Walcott, 1911, i.e., a pair of large frontal appendages. This suggests that the new genus might be a connecting link between Xenusion and Aysheaia. Besides, Jianshanopodia shares some features with the Early Cambrian stem group arthropod Pambdelurion Budd, 1997, and Kerygmachela Budd, 1993, e.g., the pairs of mid−gut diverticula, the possible presence of tail fan, the mouth cone, the frontal pharyngeal structures and the pharynax are surrounded by the bases of the large frontal appendages. However, compared with a series of segmentally arranged, imbricating, paddle−shaped, movable lateral flaps of both Pambdelurion and Kerygmachela, Jianshanopodia possesses distinct complex appendages with tree−like or lamellate branches. The discovery of this rare transitional form not only throws new light on the early diversification of lobopods, and may also have significance with respect to the origin of arthropods.
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