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Acarological and arachnological notes Naturalis
Hammen, L. van der.
A study is made of four subjects in the fields of chelicerate morphology, postembryonic development and relationships, viz., the functional morphology of the legs in Anystis (a fastrunning Actinotrichid mite), the musculature of the gnathosoma of Glyptholaspis confusa (Foà) (an Anactinotrichid mite), the evolution of the chelicerate life-cycle in the case of an irregular number of instars, and the relationships of the chelicerate classes and subclasses.
Tipo: Article / Letter to the editor Palavras-chave: Actinotrichida; Anactinotrichida; Chelicerata; Classification; Fast running; Gnathosoma; Legs; Life-cycle; Locomotion; Morphology; Neostasoid; Neostasoidy; Postembryonic development; Relationships; Stasoid; Stasoidy; 42.74.
Ano: 1986 URL: http://www.repository.naturalis.nl/record/319156
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Behaviour and habitat utilisation of seven demersal fish species on the Bay of Biscay continental slope, NE Atlantic ArchiMer
Uiblein, F; Lorance, Pascal; Latrouite, Daniel.
Much is known in very broad terms about the distribution of deep-sea fishes, but information on fine-scale habitat selection and behaviour in the largest living space on earth is still rare. Based on video sequences from 4 dives performed with the manned submersible 'Nautile' at depths between 400 and 2000 in in the Bay of Biscay, NE Atlantic, we studied the behaviour of co-occurring slope-dwelling deep-sea fishes. Five different habitats were identified according to depth range or topographical and hydrological characteristics. For each fish species or genus that could be identified, estimates of absolute abundance were provided. The most frequently occurring species, round-nose grenadier Coryphaenoides rupestris, blackmouth catshark Galeus melastomus,...
Tipo: Text Palavras-chave: Submersible observations; Assemblage structure; Density; Locomotion; Vertical positioning; Foraging; Species specific; Behavioural flexibility.
Ano: 2003 URL: https://archimer.ifremer.fr/doc/00000/10666/7591.pdf
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Critérios visuais subjetivos na avaliação da performance funcional de cavalos Pantaneiros durante julgamento. Repositório Alice
PEREIRA, L. A. G.; SILVA, A. G. DE B.; OLIVEIRA, V. A. DE.; BACHI, A.; SANTOS, S. A.; ABREU, U. G. P. de; PARRILI, M.; RODRIGUES, L. G. L.; ARAUJO, M. T. B. D..
A obtenção de critérios (escores) subjetivos confiáveis na avaliação do desempenhofuncional dos cavalos Pantaneiros pode auxiliar os juízes e também os criadores na seleção e treinamento da raça. Este estudo teve como objetivo avaliar o uso de escores subjetivos na avaliação de cavalos Pantaneiros, durante julgamento realizado em Corumbá, MS, em setembro de 2010. Reliable subjective criterions (scores) for assessing functional performance of the Pantaneiros horses can help judges and breeders in selecting and training the breed. This work aimed to evaluate the use of subjective scores (classifiers) in the evaluation of adult Pantaneiros horses during Judgment in Corumbá, MS, in September 2010.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Andamento; Conformação; Seleção animal; Animal selection; Conformation; Locomotion.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/868327
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Excavatory Cycle of Leposternon microcephalum Wagler, 1824 (Reptilia, Amphisbaenia) International Journal of Morphology
Barros-Filho,José Duarte de; Hohl,Leandro dos Santos Lima; Rocha-Barbosa,Oscar.
The excavatory movements of the spade-snouted amphisbaenid Leposternon microcephalum (Reptilia, Squamata) was studied with the aid of videofluorscopy (X-ray) techniques. This allows the observation of skull and column movements along tunneling, and a more detailed motion observation, being so a novel approach for amphisbaenian excavatory rescarches. A single specimen of Leposternon microcephalum was kept in a glass terrarium filled with semoline, and filmed with a scopy (X-ray) machine. Fixed anatomical marks on the head of the specimen were put in drawings from the framed recordings. Selected sequences of the recordings were fragmented in isolated frames for motion observation. The analysis of the recordings revealed a repetitive pattern of excavatory...
Tipo: Journal article Palavras-chave: Reptilia; Amphisbaenia; Leposternon microcephalum; Scopy; Locomotion.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000200027
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Jumping ability in the arboreal locomotion of didelphid marsupials Mastozool. neotrop.
Delciellos,Ana Cláudia; Vinícius Vieira,Marcus.
Didelphid marsupials are considered to cross discontinuities between arboreal supports using a cautious locomotion, using the prehensile tail as fifth limb. However, this ability was only described for Caluromys philander. We describe and compare the locomotory performance and postural behavior of seven species of didelphid marsupials crossing discontinuities between artificial supports representing arboreal gaps. Individuals were captured in areas of Atlantic Forest in Rio de Janeiro State, Brazil. Animals were stimulated to jump from a fixed horizontal support one meter above the ground to an inclined support of same diameter. We measured the maximum distance of jump (40, 60, 80 or 100 cm) and reach or distance actually reached by the jump. Arboreal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Forest; Body size; Didelphimorphia; Ecomorphology; Locomotion.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000200003
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Kinematic description of the vertical climbing of Dasypus novemcinctus (Xenarthra, Dasypodidae): the first report of this ability in armadillos Mastozool. neotrop.
Costa,Fabiana R; Clerici,Giannina P; Rosa,Patrícia S; Ribeiro,Leonardo L; Rocha-Barbosa,Oscar.
Armadillos are well-known quadrupeds whose digging abilities classify them differently into many fossorial categories. This is the first time a kinematic description is provided on the vertical climbing sequences performed by these animals, more specifically by the nine-banded armadillo Dasypus novemcinctus. After an opportunistic observation of climbing behavior, video recording sessions were setup to document wire mesh climbing. The individuals climbed up to its top showing four distinct ways of vertical progression, such as lat­eral and diagonal-sequences as well as few styles that resemble the asymmetrical motions used by quadrupeds on land. Sharp claws were used as strategic points of attachment on a substrate, and tails provided additional support...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Behavior; Cingulata; Locomotion; Nine-banded armadillo; Xenarthra.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832017000200019
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L'activite de deplacement et le reperage de la nourriture chez le bar juvenile captif ArchiMer
Anthouard, M; Paris, J.
Movement activity and localization of food were studied dynamically with the objective of establishing the capacities of behavioral adaptation of the young Dicentrarchus labrax faced with a novel situation. The role played by previous rearing conditions was demonstrated, the level of stimulation being a sensitive intervening factor (currents associated with the food). The data show the favourable effects of such treatment, and are in agreement with work carried out on higher vertebrates, which have brought to light the importance of early stimulation in behavioral ontogeny which respect to emotionality as well as capacities of adaptation in subjects reaching adulthood.
Tipo: Text Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Juveniles; Stimuli; Locating; Locomotion; Fish culture; Nutrition; Ethology.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1253.pdf
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Locomotion of Stramonita haemastoma (Linnaeus) (Gastropoda, Muricidae) on a mixed shore of rocks and sand Zoologia
Papp,Marcos G.; Duarte,Luiz F.L..
Mixed shores of rocks and sand are appropriate systems for the study of limitations that the isolation of rocks may impose for gastropods that typically inhabit rocky shores. We marked 52 Stramonita haemastoma (Linnaeus, 1767) snails on a mixed shore and found that 34 of them moved between rocks one to four times during 15 surveys in a period of 72 days. In the experiments, the snails moved on rock by continuous, direct, ditaxic, alternate undulations of the foot sole but on submerged sand they used slower arrhythmic discontinuous contractions of the foot sole. They switched between modes of locomotion in response to the type and topography of the substrate and possibly to water dynamics. In nature, snails moved between rocks forming aggregations where...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gastropoda; Muricidae; Stramonita; Thais; Desiccation; Locomotion; Mixed shore; Oyster drill; Brazil.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100022
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Locomotory behaviour and functional morphology of Nematostella vectensis (Anthozoa: Actiniaria: Edwardsiidae): a contribution to a comparative study of burrowing behaviour in athenarian sea anemones Naturalis
Williams, R.B..
The locomotory behaviour and functional morphology of English populations of a small (<2 cm long), burrowing athenarian sea anemone, Nematostella vectensis Stephenson, 1935 (= N. pellucida Crowell, 1946), which lives in soft mud in salt marshes and creeks, are described. Objectives were to ascertain the specific stimuli and environmental conditions determining when and how locomotion is employed, and to assess survival values. Experimentation and anatomical examination revealed how anemones move, and their functional morphology was interpreted in a physiological context. Finally, locomotion, morphology and habitat were compared for several athenarian anemones, to ascertain what correlations there are, if any. Essential environmental conditions for N....
Tipo: Article / Letter to the editor Palavras-chave: Behaviour; Burrowing; Climbing; Creeping; England; Functional morphology; Locomotion; Musculature; Nematostella vectensis; Rugae; Sea anemones; 42.79.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/220581
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Male sexually coercive behaviour drives increased swimming efficiency in female guppies ArchiMer
Killen, Shaun S.; Croft, Darren P.; Salin, Karine; Darden, Safi K..
Sexual coercion of females by males is widespread across sexually reproducing species. It stems from a conflict of interest over reproduction and exerts selective pressure on both sexes. For females, there is often a significant energetic cost of exposure to male sexually coercive behaviours. Our understanding of the efficiency of female resistance to male sexually coercive behaviour is key to understanding how sexual conflict contributes to population level dynamics and ultimately to the evolution of sexually antagonistic traits. Overlooked within this context are plastic physiological responses of traits within the lifetime of females that could moderate the energetic cost imposed by coercive males. Here, we examined whether conflict over the frequency...
Tipo: Text Palavras-chave: Locomotion; Metabolic rate; Phenotypic plasticity; Sexual conflict; Teleost fish.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00414/52502/53313.pdf
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Movement behaviour and video tracking of Milnesium tardigradum Doyère, 1840 (Eutardigrada, Apochela) Naturalis
Shcherbakov, D.; Schill, R.O.; Brümmer, F.; Blum, M..
Tardigrades or ‘water-bears’ live in moist environments with a high degree of gaseous exchange. In tardigrades, locomotion is essential, e.g. for feeding, to find sexual partners and to adjust the level of hydration by moving to wetter or dryer environments. Here we report on the movement behaviour of Milnesium tardigradum in automated experiments using custom-made video tracking software. The experiments involved 754 hours of recording involving 32 individuals. No significant differences in mobility were observed under infrared versus visible light conditions, representing night and day, respectively. The mean recorded velocity was 23.3 ± 7.38 mm/h, with a maximum of 1166.4 mm/h.
Tipo: Article / Letter to the editor Palavras-chave: Locomotion; Tardigrada; Video analysis; 42.71.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/330854
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New way to estimate efficient use of energy in copepods during migrations ArchiMer
Petipa, T; Ostrovskaya, N.
It is shown that the energy expenditures on the mechanical movements of copepods depend on the knowledge of character of velocity movements range at active phase. The method of direct estimates of energy expenditures for copepod vertical migration permits to determine more real coefficients of chemical energy utilization on the mechanical work.
Tipo: Text Palavras-chave: Copepoda; Analytical techniques; Vertical migrations; Locomotion; Energy budget.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1523.pdf
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Origins of Bipedalism BABT
Ko,Kwang Hyun.
ABSTRACT This article aimed to review various theories of bipedalism and provide a holistic answer to human evolution. There have been two questions regarding bipedalism: i) why were the earliest hominins partially bipedal?, and ii) why did hominins become increasingly bipedal over the time and replaced their less bipedal ancestors? To answer these questions, the prominent theories in the field, such as the savanna-based theory, the postural feeding hypotheses, and the provisioning model, are collectively examined. Because biological evolution is not a simple causation; there may be multiple answers to the evolution of bipedalism. The postural feeding hypothesis (reaching for food/balancing) provides an explanation for the partial bipedalism of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Locomotion; Provisioning model; Bipedalism; Chimps; Savannah; Origins of Bipedalism.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000600929
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Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) Anais da ABC (AABC)
Grillo,Orlando N.; Azevedo,Sergio A.K..
The study of pelvic and hind limb bones and muscles in basal dinosaurs is important for understanding the early evolution of bipedal locomotion in the group. The use of data from both extant and extinct taxa placed into a phylogenetic context allowed to make well-supported inferences concerning most of the hind limb musculature of the basal saurischian Staurikosaurus pricei Colbert, 1970 (Santa Maria Formation, Late Triassic of Rio Grande do Sul, Brazil). Two large concavities in the lateral surface of the ilium represent the origin of the muscles iliotrochantericus caudalis plus iliofemoralis externus (in the anterior concavity) and iliofibularis (in the posterior concavity). Muscle ambiens has only one head and originates from the pubic tubercle. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Extant phylogenetic bracket; Locomotion; Muscular reconstruction; Saurischia; Staurikosaurus pricei.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000100005
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Physical exercise prevents motor disorders and striatal oxidative imbalance after cerebral ischemia-reperfusion BJMBR
Sosa,P.M.; Schimidt,H.L.; Altermann,C.; Vieira,A.S.; Cibin,F.W.S.; Carpes,F.P.; Mello-Carpes,P.B..
Stroke is the third most common cause of death worldwide, and most stroke survivors present some functional impairment. We assessed the striatal oxidative balance and motor alterations resulting from stroke in a rat model to investigate the neuroprotective role of physical exercise. Forty male Wistar rats were assigned to 4 groups: a) control, b) ischemia, c) physical exercise, and d) physical exercise and ischemia. Physical exercise was conducted using a treadmill for 8 weeks. Ischemia-reperfusion surgery involved transient bilateral occlusion of the common carotid arteries for 30 min. Neuromotor performance (open-field and rotarod performance tests) and pain sensitivity were evaluated beginning at 24 h after the surgery. Rats were euthanized and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Stroke; Striatum; Locomotion; Oxidative stress; Antioxidants; Running.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000900798
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Swerving as the escape strategy of Macrauchenia patachonica Owen (Mammalia; Litopterna) Ameghiniana
Fariña,Richard A.; Blanco,R. Ernesto; Christiansen,Per.
The Lujanian megamammals (late Pleistocene of South America) show many palaeoautecological peculiarities. The present paper studies one of them, the locomotor habits of Macrauchenia patachonica Owen, through those morphological features related with its possible antipredation strategy. To avoid predation (especially by the sabre-tooth Smilodon Lund), this large litoptern seems to have been particularly adapted to swerving behaviour. This is suggested by the fact that its limb bones have indicators of higher transverse than anteroposterior strength (significantly so in the case of the femur), a feature which is also observed in modern swervers, and not so clearly in other fast running herbivores that do not use swerving so much.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Palaeoecology; Megafauna; Pleistocene; South America; Biomechanics; Locomotion.
Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142005000400007
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Thigmotactic responses in an open-field BJMBR
Lamprea,M.R.; Cardenas,F.P.; Setem,J; Morato,S..
The goal of the present study was to investigate the role of thigmotaxis (the tendency to remain close to vertical surfaces) in rat exploratory behavior in an open-field. Thigmotaxis was investigated in a parametric way, using 24 experimentally adult naive male Wistar rats (210-230 g). Exploratory behavior was studied in an open-field (N = 12) in 5-min sessions and behavior was analyzed in terms of where it occurred: in areas surrounded by two, one, or no walls. Another group of rats (N = 12) was studied in an open-field with blocks placed near two of the corners so as to make these corner areas surrounded by three walls. The floor of the open-fields was divided into 20-cm squares in order to locate the exact place of occurrence of each behavior. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exploratory behavior; Thigmotaxis; Open-field; Rearing behavior; Grooming; Locomotion.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200010
Registros recuperados: 17
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