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Registros recuperados: 22
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Alternatives to taxonomic-based approaches to assess changes in transitional water communities ArchiMer
Mouillot, D; Spatharis, S; Reizopoulou, S; Laugier, Thierry; Sabetta, L; Basset, A; Chi, T.
1. Transitional waters, described as critical transition zones because of their position at terrestrial, freshwater and marine interfaces, provide essential goods and services to the biosphere including human populations. These ecotones face increasing human influence mainly due to population density increase in coastal areas. 2. Transitional water bodies have, to date, received little attention in the development of ecological status indicators, this is a critical deficiency when trying to meet the Water Framework Directive objective of all significant water bodies achieving good ecological status by the year 2015. 3. In order to assess changes in transitional water communities many taxonomic-based indicators have already been proposed but there are a...
Tipo: Text Palavras-chave: Biotic descriptors; Productivity; Functional diversity; Functional traits; Body size; Water Framework Directive WFD.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1849.pdf
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Application of Principal Component Factor Analysis in Quantifying Size and Morphological Indices of Domestic Rabbits International Journal of Morphology
Yakubu,A; Ayoade,J. A.
Body weight and four morphostructural traits namely body length, heart girth, thigh circumference and ear length of 103 New Zealand White x Chinchilla crossbred rabbits were measured. The investigation aimed at describing objectively the interdependence among conformation traits and to predict body weight from their independent factor scores using principal component analysis. Phenotypic correlations between body weight and body dimensions were highly significant (r=0.61 ­ 0.91; P<0.01). Pairwise correlations of the body shape characters ranged from moderate to high values. From the factor analysis with varimax rotation of the intercorrelated traits, two principal components which accounted for 90.27% of the total variance were extracted. The first...
Tipo: Journal article Palavras-chave: Body size; Growth; Rabbits.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400009
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Biologie et pêche traditionnelle des crevettes pénéides dans l'embouchure d'un fleuve en milieur semi-aride (sud-ouest de Madagascar) ArchiMer
Laroche, Jean; Benoely,; Siaviri, A.
Traditional fishing using beach seines was studied over a period of one year at the mouth of the Onilahy river. The catches/efforts were recorded on a daily basis, biological sampling and the measurement of hydrological parameters being carried out twice a month. The moderate variations of salinity and temperature (14 < salinity < 35; 25 degrees C < temperature < 30 degrees C) which were observed in the estuary can be explained by the semiarid climate of the area. Four species of penaeid shrimps are to be found on the Onilahy: Metapenaeus monoceros, Panaeus indicus, Penaeus monodon and Penaeus japonicus, which were mainly caught at the subadult/adult stage with a Carapace length between 10 and 50 mm. The presence of these important sizes at the...
Tipo: Text Palavras-chave: Pêche; Estuaire; Dynamique population; Croissance; Taille corporelle; Cycle évolutif; Zone semi aride; Madagascar; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Metapenaeus monoceros; Rivière Onilahy; Afrique; Milieu saumâtre; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata; Fishing; Estuaries; Population dynamics; Growth; Body size; Life history; Semi arid zone; Malagasy Republic; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Africa; Brackish water environment; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00097/20828/42822.pdf
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Breaking the rule: multiple patterns of scaling of sexual size dimorphism with body size in orthopteroid insects Rev. Soc. Entomol. Argent.
Bidau,Claudio J.; Taffarel,Alberto; Castillo,Elio R..
Sexual size dimorphism (SSD) although a widespread phenomenon among animals, is both enigmatic as to its proximate and ultimate causes and the scaling relationships between SSD and body size (Rensch's rule). We analyzed SSD at the intra- and interspecific levels in a number of representative species and genera of the major orthopteroid orders: Orthoptera, Phasmatodea, Mantodea, Blattodea, Dermaptera, Isoptera, and Mantophasmatodea. The vast majority of the species showed female biased SSD but numerous exceptions occur in cockroaches and earwigs. Rensch's rule and its converse are not common patterns at both, intra-and cross-species level, most species and genera showing an isometric relationship between male and female body sizes. In some but not all...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body size; Blattodea; Dermaptera; Mantodea; Mantophasmatodea; Morphometric traits; Orthoptera; Phasmatodea; Rensch's rule; Scaling.
Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802016000100002
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Development and Reproductive Characteristics of Lysiphlebus fabarum (Marshall) (Hymenoptera: Aphidiidae), a Parasitoid of Cowpea Aphid, Aphis craccivora Koch (Homoptera: Aphididae) OAK
刀祢, 淳也; 仲島, 義貴.
本文データは学協会の許諾に基づきCiNiiから複製したものである
Palavras-chave: Biological control; Body size; Intrinsic rate of natural increase; Thelytoky.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2586
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Efficiency of calf production of cows from two genetic groups. Repositório Alice
ÍTAVO, L. C. V.; EUCLIDES FILHO, K.; TORRES JUNIOR, R. A. de A.; ÍTAVO, C. C. B. F.; NOGUEIRA, E.; DIAS, A. M..
The objective was to evaluate the effect of weight, age and production efficiency of cows from genetic groups based on the calf weight at calving and at weaning. For a period of five years, data of 120 cows (60 Angus-Nellore (AN) and 60 Simmental-Nellore (SN)) at four to nine-years of age were evaluated. All cows were maintained on Brachiaria decumbens pastures, with two forage availability levels (high and low), distributed in a randomized-block design. The cows were placed together with Canchim bulls to generate the crossbred calves. A supplement, consisting of 200 g/kg crude protein and 820 g/kg of total digestible nutrients, was provided to the calves in creep feeding until 210 days-old (weaning). Supplement had a significant effect on the weight of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Body size; Calf performance; Crossbreed; Efficiency.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/991439
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Etude de la tolérance a la température et a la salinité chez le tilapia du Nil Oreochromis niloticus (L.) élevé dans les eaux géothermales du sud tunisien OceanDocs
Kraïem, M.M.; Azaza, M.S..
تهدف هذه الدراسة إلى تقييم طاقة تحمل الحرارة العليا والملوحة لسمك البلطي النيلي المربى في المياه الجيوحرارية بالجنوب التونسي وذلك مع تأثير كل من حرارة تأقلم الأسماك وحجمها على طاقة تحملها للحرارة العليا الهالكة. بالنسبة لكل حرارة تأقلم وهي 20 و 30 درجة لمدة 10 أيام، وقع إخضاع عينات من هذه الأسماك إلى الدرجات الحرارية التالية 35، 36، 37، 38، 39، 40 و 41 درجة، بصفة منفصلة ووقع قيس معدل مدة الحياة بالنسبة لكل حرارة. فيما يخص تأثير طول الأسماك، وقع تقسيم الأسماك إلى 3 أقسام طولية مختلفة. بينت هذه الدراسة أن عامل تأقلم الأسماك للحرارة ) 20 و 30 درجة) لا يمكنها من ترفيع الحرارة القاتلة. حيث تبلغ هذه الحرارة 40,12 درجة بالنسبة للتأقلم في حرارة 20درجة في حين تبلغ 40,73 درجة بالنسبة للأسماك التي وقعت أقلمتها في حرارة 30 درجة. كما بينت هذه الدراسة أنه لا يوجد...
Tipo: Journal Contribution Palavras-chave: Oreochromis niloticus; Acclimation; Body size; Controlled conditions; Salinity tolerance; Temperature tolerance; Oreochromis niloticus; Http://aims.fao.org/aos/agrovoc/c_35330.
Ano: 2007 URL: http://hdl.handle.net/1834/4247
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Evaluación hidroacústica del stock parental de merluza de tres aletas en su unidad de pesquería, año 2004. FASE I y FASE II OceanDocs
Lillo, S.; Céspedes, R.; Ojeda, V.; Saavedra, A.; Díaz, E.; Adasme, L..
El presente estudio tiene como objetivo evaluar el stock de merluza de tres aletas (Micromesistius australis) a través del método hidroacústico, entre las latitudes 47° 00' S y 51° 00' S. Como parte del proyecto, se realizó entre el 2 y el 14 de septiembre de 2004 un crucero de prospección a bordo del B/C Abate Molina, orientado a evaluar mediante un método de evaluación directa (evaluación acústica) su biomasa, abundancia y distribución, junto con estimar la composición de tallas, edad y proporción sexual del stock desovante en el área de estudio.
Tipo: Report Palavras-chave: Stock assessment; Spawning populations; Echo surveys; Biomass; Geographical distribution; Sex ratio; Age groups; Body size; Stock assessment; Biomass; Geographical distribution; Body size; Sex ratio; Age groups; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_35330; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_28628.
Ano: 2005 URL: http://hdl.handle.net/1834/1740
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Evaluation of Three Mathematical Functions to Describe the Relationship Between Body Weight, Body Condition and Testicular Dimensions in Yankasa Sheep International Journal of Morphology
Yakubu,A; Musa-Azara,I. S.
Body size and testicular measurements have been found to be important parameters utilized in breeding soundness evaluation. The present study therefore, aimed at determining the relationship between body weight (BW), body condition score (BCS), testicular length (TL), testicular diameter (TD) and scrotal circumference (SC) in 120 extensively reared Yankasa rams (approximately 30 months old) using linear, quadratic and cubic predictive models. Coefficient of determination (R2), Adjusted R2, the estimate of Mallows' Cp, RMSE (Root mean squares error) and the parsimony principle (p=number of parameters) were used to compare the efficiency of the different models. Strong Pearson's correlation coefficients (r = 0.83-0.94; P<0.01) were found between BW, TL,...
Tipo: Journal article Palavras-chave: Body size; Body condition; Testicular measurements; Rams; Regression models.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400036
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Factors affecting the home range size of felids (Mammalia, Carnivora) with emphasis on three American species Ecología austral
Machado,Renata F; Cerezer,Felipe O; Hendges,Carla D; Cáceres,Nilton C.
We evaluated several factors that might be related to the home-range size of felids at both inter and intraspecific levels. At the interspecific level, we tested the influence of body mass on home range size of 19 felid species, while controlling for phylogeny. At the species level, we evaluated the effect of sex and habitat type (open vs. closed) on the home range size of three species of felids occurring in America, Panthera onca, Leopardus pardalis and Puma concolor, which are among the most studied species concerning home ranges. Body mass, sex, and home range data were extracted from the Pantheria database (for 19 species, for interspecific comparisons) and from 48 studies for intraspecifc comparisons. We assessed the influence of body mass on the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pantera onca; Leopardus pardalis; Puma concolor; Sexual dimorphism; Body size; Environment; Territory.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2017000300004
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Growth rates of Paleosuchus palpebrosus at the southern limit of its range. Repositório Alice
CAMPOS, Z.; MAGNUSSON, W. E.; MARQUES, V..
We estimated growth rates of Dwarf Caiman (Paleosuchus palpebrosus) with capture?recapture data from 40 individuals collected over 6 yr in streams surrounding the Brazilian Pantanal, near the southern limit of the species? distribution. Repeated recaptures of eight animals indicate that withinindividual variation is much greater than between-individual variation, possibly reflecting climatic influences. Growth rates of juveniles increased linearly until individuals were about 28 cm snout?vent length (SVL), and then growth rates decreased gradually after attaining that size. The rate of decrease, however, differed between males and females. Data for 30 juveniles with known age were used to validate the growth curve based on the growth rate-on-size analysis....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Age; Body size; Brazil; Dwarf Caiman; Sexual maturity.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/972836
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Infestation pattern and parasitic castration of the crustacean Riggia paranensis (Crustacea: Cymothoidea) on the fresh water fish Cyphocharax gilbert (Teleostei: Curimatidae) Neotropical Ichthyology
Azevedo,Juliana de Souza; Silva,Leonardo Gomes da; Bizerri,Carlos Roberto Silveira Fontenelle; Dansa-Petretski,Marilvia Alencar; Lima,Neuza Rejane Wille.
Cyphocharax gilbert infested by Riggia paranensis shows parasitic castration. The prevalence of parasitism in C. gilbert varied among different environments, being higher in the middle rio Itabapoana. Fish were collected monthly using two cast nets (thrown 30 times during the day) and gillnets kept in the river during 12 hour, from sunset to sunrise, between September 1997 and August 2000. Infestation pattern was investigated on 1358 specimens. Most of them were infested (57.9%), with one or two parasites; the majority (62.9%) was collected during the rainy season (spring-summer). The parasite did not show preference for sex or size of hosts. A total of 91.5% of the 511 examined parasites had a body size that represented 10.1% to 20% of host standard...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body size; Prevalence of parasitism; Parasitic castration; Reproduction.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000300008
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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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La marsopa de anteojos en la Antártica OceanDocs
Olavarría, C..
El grupo de las marsopas está compuesto por seis especies. La marsopa lisa (Neophocaena phocaenoides) que habita el sur de Asia y la marsopa de Dall (Phocoenoide dalli) que vive en gran parte del Pacífico Norte. Otras tres especies son las más emparentadas con la marsopa de anteojos. La marsopa de la bahía (Phocoena phocoena) que habita zonas costeras del Pacífico y Atlántico Norte, y en el Mar Negro; la marsopa espinosa (Phocoena spinipinnis) que se distribuye cerca de la costa en el extremo sur de Sudamérica, y la especie de cetáceo con quizás mayor problema de conservación, la Vaquita (Phocoena sinus) la cual sólo habita en una porción muy pequeña del Golfo de California en México. La marsopa espinosa y la marsopa de anteojos son las dos especies de...
Tipo: Journal Contribution Palavras-chave: Marine mammals; New records; Body size; Animal morphology; Geographical distribution; Body size; Geographical distribution; Animal morphology; Http://aims.fao.org/aos/agrovoc/c_35330; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_421.
Ano: 2006 URL: http://hdl.handle.net/1834/3235
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Les ages de Niphargus virei (crustace, stygobie) ArchiMer
Turouin-buffiere, M.
The life-span of Niphargus virei is estimated with the length histograms of annual summer samples; it fits in with the data of rare spring distributions and with the growth observed in the laboratory. Increase in body wet weight confirms the low growth rate of this species (maximum: 0.06 mg/day); the mean age of populations changes on account of rainfall, which determines the drift of part of the population out of its natural habitat.
Tipo: Text Palavras-chave: Niphargus virei; Malacostraca; Mortality; Body size; Longevity; Growth.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1396.pdf
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Morphometric Differentiation and Asessment of Function of the Fulani and Yoruba Ecotype Indigenous Chickens of Nigeria International Journal of Morphology
Olawunmi,O. O; Salako,A. E; Afuwape,A. A.
Data on bodyweight and 11 body measurements were taken on 51 Fulani and 101 Yoruba ecotype chicken from two central poultry markets: Ilorin in the middle belt and Ibadan in the southwest región of Nigeria, respectively. The aim was to provide baseline information on size characteristics of Fulani and Yoruba ecotype chickens, differentiate between the types and use the morphometrical variables for a preliminary assessment of type and function. Results showed that least square means of live weight, wing and shank length, body, thigh and toe length, beak length and breast breadth of the Fulani ecotype were generally higher (P < 0.01) than those of the Yoruba ecotype. The males were also superior (P < 0.01) to the females for comb, wing, shank length and...
Tipo: Journal article Palavras-chave: Body size; Yoruba and Fulani chickens; Body measurements; Function.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000400032
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Programa temporal de evaluación hidroacústica de merluza del sur en aguas interiores de la X y XI Regiones, año 2002. Informe final corregido OceanDocs
Lillo, S.; Céspedes, R.; Barbieri, M.A.; Saavedra, A.; Gálvez, P..
Se presentan los resultados de la evaluación de la biomasa y la distribución espacial de la merluza del sur (Merluccius australis), estructurado por tallas y edad en las aguas interiores de la X y XI Regiones aplicando el método hidroacústico. También se estima la abundancia relativa y la importancia de la fauna acompañante proveniente de los lances de pesca con arrastre a mediagua. Con la información recolectada en el Crucero y en la pesquería se plantea un modelo de dinámica espacio temporal del stock. Los datos fueron colectados en dos cruceros de prospección realizados a bordo del B/C “Abate Molina”, entre el 4 y 18 de febrero (verano) y el desde el 1 al 14 de septiembre del 2003 (invierno). Los resultados mostraron que la merluza del sur era el...
Tipo: Report Palavras-chave: Population structure; Stock assessment; Age composition; Biomass; Geographical distribution; Body size; Acoustic equipment; Population structure; Stock assessment; Age composition; Biomass; Geographical distribution; Body size; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_29093; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_35330.
Ano: 2004 URL: http://hdl.handle.net/1834/1696
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Resolution of biodiversity and assemblage structure in demersal fisheries surveys: the role of tow duration ArchiMer
Moriarty, M.; Sell, A. F.; Trenkel, Verena; Lynam, C. P.; Burns, F.; Clarke, E. D.; Greenstreet, S. P. R.; Mcgonigle, C..
An experiment during a fisheries independent survey in the North Sea was conducted to test whether sampling effort could be reduced without a significant loss in data precision. To examine potential effects of reducing tow duration from the standard 30 min to a proposed 15 min estimates of species encounter rates, species richness, and estimates of abundance, biomass, and body size were analysed. Results show species richness estimates are lower in the short tow category. While biomass and abundance at length and body size are significantly affected by the change in tow duration, estimates of Large Fish Indicator, the Typical length and Mean-max length are not significantly affected by the regime change. The results presented here suggest that a reduction...
Tipo: Text Palavras-chave: Abundance; Biomass; Body size; Fisheries independent survey; IBTS; International Bottom Trawl Survey; Linear mixed model; North Sea; Species diversity.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00439/55028/60477.pdf
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The air-breathing cycle of Hoplosternum littorale (Hancock, 1828)(Siluriformes: Callichthyidae) Neotropical Ichthyology
Jucá-Chagas,Ricardo; Boccardo,Lilian.
Hoplosternum littorale is a continuous air breather, which uses a portion of its intestine to extract oxygen from inspired air. Its air-breathing behavior occurs in four phases: 1) ascent to the water surface; 2) mouth emergence with expansion of the oral cavity for air inspiration; 3) downward swimming and oral cavity compression resulting in air swallowing and the expiration of old air from the anus; 4) return to bottom. The time required to complete the air-breathing cycle was significantly shorter for small fish compared to large fish.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Respiratory organ; Tamboatá; Behavior; Body size; Intestine.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000300009
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Tooth size and metabolic requirements in Primates: The 'equivalence between exponents' under discussion International Journal of Morphology
Jiménez-Arenas,Juan Manuel.
The functional significance of teeth size, specifically postcanine tooth size has contributed a vast amount of scientific literature. Nevertheless, these studies have been based on 'equivalence between exponents'. That is, when the tooth size scales to the 0.75 power of body size exponent is interpreted as reflecting differences in metabolic requirements. On the contrary, if the obtained exponent is close to isometry, such slope is interpreted as that variation in teeth size is an incidental consequence of body size variation. In this paper, we show the results of a study in which the relationship between postcanine tooth occlusal area (PCOA) and basal metabolic rate (BMR) has been evaluated in 28 primate species. On one hand, the results obtained indicate...
Tipo: Journal article Palavras-chave: Postcanine tooth size; Basal metabolic rate; Allometry; Body size.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400008
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