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| Registros recuperados: 18 | |
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| MARTIUS,Christopher. |
| The leaf-feeding species Syntermes molestus and S. spinosus are two dominant termite species in Reserva Ducke in Central Amazonia; two other species (S. aculeosus, S. longiceps) exist in the area. All species except S. aculeosus were also found in urban areas. The workers of S. molestus and S. spinosus have average body dry weights of 4.5±0.2 and 13.1±1.4 mg, and the weight of their soldiers is 8.2±0.2 and 51.0±1.7 mg, respectively. Therefore, S. spinosus is among the largest termites of the world. In both species, fresh weight is about 4.7 higher than dry weight (a wider relation than in other termite species). The biomass of the populations of both species amounted to about 1 g m-2 (dry weight; indirect estimate), which rises previous assessments of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon rain forest; Leaf-feeding termites; Body mass; Biomass. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671998000300319 |
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| GÜNTHER,BRUNO; MORGADO,ENRIQUE. |
| In contrast with classical physics, particularly with Sir Isaac Newton, where time is a continuous function, generally valid, eternally and evenly flowing as an absolute time dimension, in the biological sciences, time is in essence of cyclical nature (physiological periodicities), where future passes to past through an infinitely thin boundary, the present. In addition, the duration of the present (DP) leads to the so-called 'granulation of time' in living beings, so that by the fusion of two successive pictures of the world, which are not entirely similar, they attain the perception of 'movement,' both in the real world as well as in the sham-movement in the mass media (TV). |
| Tipo: Journal article |
Palavras-chave: Allometric equations; Biological time; Body mass; Physical time; Theory of biological similitude. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000500005 |
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| Sutherland, Glenn D; University of British Columbia; gsland@interchg.ubc.ca; Harestad, Alton S; Simon Fraser University; harestad@sfu.ca; Price, Karen; Simon Fraser University; kprice@futurenet.ca; Lertzman, Ken; Simon Fraser University; lertzman@sfu.ca. |
| Natal dispersal is a process that is critical in the spatial dynamics of populations, including population spread, recolonization, and gene flow. It is a central focus of conservation issues for many vertebrate species. Using data for 77 bird and 68 mammal species, we tested whether median and maximum natal dispersal distances were correlated with body mass, diet type, social system, taxonomic family, and migratory status. Body mass and diet type were found to predict both median and maximum natal dispersal distances in mammals: large species dispersed farther than small ones, and carnivorous species dispersed farther than herbivores and omnivores. Similar relationships occurred for carnivorous bird species, but not for herbivorous or omnivorous ones.... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Allometric scaling; Birds; Body mass; Comparative analysis; Connectedness; Diet type; Habitat alterations; Life history; Mammals; Movements; Natal dispersal distances; Probability density function. |
| Ano: 2000 |
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| Kopf, R. Keller; Yen, Jian D. L.; Nimmo, Dale G.; Brosse, Sébastien; Villeger, Sébastien; Tittensor, Derek. |
| Aim The aim of this study was test whether maximum body mass and jaw length are reliable predictors of trophic position (TP) in fishes, and to compare linear and nonlinear machine‐learning (ML) models incorporating biogeography, habitat and other morphological traits. Location Global. Time period Modern. Major taxa studied Fishes. Methods We compiled a global database of TP (2.0–4.5), maximum body mass, jaw length, order, ecoregion, habitat and other morphological traits of freshwater, estuarine and diadromous fishes (n = 1,991). We used Bayesian linear mixed effects and ML, with r2 analogues and 10‐fold cross‐validation, to explain and predict TP. Results Random forest models outperformed Bayesian models in all comparisons. Jaw length was the most... |
| Tipo: Text |
Palavras-chave: Allometric trophic network models; Allometry; Body mass; Gape limitation; Machine learning; Predator– Prey; Random forest; Trophic network theory. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00661/77349/78823.pdf |
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| Bonola, Marc; Girondot, Marc; Robin, Jean-patrice; Martin, Jordan; Siegwalt, Flora; Jeantet, Lorène; Lelong, Pierre; Grand, Clément; Chambault, Philippine; Etienne, Denis; Gresser, Julie; Hielard, Gaëlle; Alexandre, Arqué; Régis, Sidney; Nicolas, Laurence; Frouin, Cédric; Lefebvre, Fabien; Sutter, Emmanuel; Vedie, Fabien; Barnerias, Cyrille; Laurent, Thieulle; Bordes, Robinson; Guimera, Christelle; Aubert, Nathalie; Bouaziz, Myriam; Pinson, Adrien; Frédéric, Flora; Matthieu, Duru; Benhalilou, Abdelwahab; Céline, Murgale; Maillet, Thomas; Andreani, Lucas; Campistron, Guilhem; Sikora, Maxym; Rateau, Fabian; Francis, George; Joffrey, Eggenspieler; Woignier, Thierry; Allenou, Jean-pierre; Louis-jean, Laurent; Chanteur, Bénédicte; Béranger, Christelle; Crillon, Jessica; Brador, Aude; Habold, Caroline; Le Maho, Yvon; Chevallier, Damien. |
| The change of animal biometrics (body mass and body size) can reveal important information about their living environment as well as determine the survival potential and reproductive success of individuals and thus the persistence of populations. However, weighing individuals like marine turtles in the field presents important logistical difficulties. In this context, estimating body mass based on body size is a crucial issue. Furthermore, the determinants of the variability of the parameters for this relationship can provide information about the quality of the environment and the manner in which individuals exploit the available resources. This is of particular importance in young individuals which growth quality might be a determinant of adult fitness.... |
| Tipo: Text |
Palavras-chave: Green turtles; Juveniles; Body mass; Body condition; Biometry. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00593/70493/68640.pdf |
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| Reguli,Zdenko; Bernaciková,Martina; Kumstát,Michal. |
| Although aikido is a non-competitive martial art, it is recognised by SportAccord as worldwide practiced combat sport. There is a lack of scientific research in aikido and the influence of aikido practice on the human body is not known. This is the first study that presents anthropometric characteristics and body composition data in aikido practitioners. 33 adult male aikido athletes (age 36.5±9.6 years, height 178±8 cm, weight 81.2±10.1 kg) were measured. All subjects were divided from beginner to intermediate and advanced group, and were recruited from the Czech Aikido Federation which is officially recognised by the centre of aikido in Japan. As main methods, bio impedance and skinfold measurements were realized. In aikido, body composition does not... |
| Tipo: Journal article |
Palavras-chave: Matiegka; Bioimpedance; Martial arts; Body mass. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000200001 |
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| Ramos-Campo,Domingo Jesús; Martínez Sánchez,Fernando; Esteban García,Paula; Rubio Arias,Jacobo Ángel; Bores Cerezal,Antonio; Clemente-Suarez,Vicente Javier; Jiménez Díaz,José Fernando. |
| The aim of the present research was to analyze the body composition (BC) and the differences in BC among different playing position in professional basketball, handball and futsal players. BC was assessed in 70 professional indoor team sport players. Players were divided in 4 groups depending on the playing position: group 1, point guard, center/wings and defense; group 2, shooting guard/small forward, handed and midfielder; group 3, power forward/center, pivot and forward; and group 4 goalkeeper. Significant differences between playing positions in basketball in body mass (BM), height, proteins, minerals and arms, legs and trunk BM were found. In handball, significant differences between center/wings and pivot in BM and muscle mass, and between... |
| Tipo: Journal article |
Palavras-chave: Fat mass; Height; Performance; Body mass. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400032 |
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| Freudenthal, M.; Martín-Suárez, E.. |
| Reconstructing the body mass of a fossil animal is an essential step toward understanding its palaeoecological role. Length × width (L×W) of the first lower molar (m1) is frequently used as a proxy for body mass in fossil mammals. However, among rodents, Muroidea have no premolar and an elongated m1, whereas other groups have a premolar and a m1 that is not elongated. This leads to an overestimation of body mass in muroids and/or an underestimation in other rodents. To solve this problem we assembled data of upper and lower tooth row length and body mass in extant rodents, and calculated regression equations for all rodents, rodents with premolars, rodents without premolars and for taxonomic groups at superfamily or family level. Data for complete tooth... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Rodentia; Body mass; 42.84; 38.22. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/469427 |
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| Freudenthal, M.; Martín-Suárez, E.. |
| We present estimates for head and body length (HBL) of fossil rodents. We assembled HBL data and tooth row length data (LTR, UTR) for a large number of extant rodents, and calculated regression lines of HBL on LTR and UTR for all rodents together (all-rodents equation), and for separate taxonomic groups (family equations). In fossil rodents, data for complete tooth rows are scarce, therefore we use the sum of the lengths of the teeth (LRsum, URsum) as a surrogate for tooth row length. The relation between this parameter and real tooth row length (LTR, UTR) is calculated on the basis of a number of populations for which both parameters are available. We estimate HBL of fossil rodents, using LRsum and URsum and the regression lines of extant rodents, and we... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Rodentia; Body mass; Teeth; Tooth row length. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/607530 |
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| Registros recuperados: 18 | |
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