|
|
|
| Registros recuperados: 672 | |
|
|
| Leite,Fosca Pedini Pereira. |
| The post-marsupial growth, sexual differentiation, fecundity and reproductive biology of Hyale media Dana, 1853 living on Sargassum cymosum C. Agardh, 1820 are described. The growth was continuous througth 12 stages for males and 9 for females. The sexual differentiation occours at 2th or 3th moult and was demonstrated by the enlargment of the gnatopod II propod. Number of eggs increased with the female head length. Observations of courtship behavior, incubation, moult processes, emergence of juveniles and brood caracteristics were made. The precopula courtship continued for two days, the eggs were incubated for six days and the juveniles, that stay until three days in the marsupium, moult every day. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphipods; Reproduction; Growth; Fecundity; Sargassum. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300008 |
| |
|
|
| Lira-da-Silva,Rejane Maria; Casais-e-Silva,Luciana Lyra; Queiroz,Ilka Biondi de; Nunes,Tânia Brazil. |
| Great part of lhe avaiable data about snakes reprodution refers to species coming from subtropical and temperate regions. In Brazil, the data is rather rare and can be found in various works where information is restricted. Results from studies developed with five viviparous snakes - Crotalus durissus cascavella (Wagler, 1824). Bothrops erythromelas(Amaral, 1923), B. leucurus (Wagler, 1824), Helicops leopardinus (Schlegel, 1873) and Thamnodynastes strigilis (Thiinberg, 1787) - which come from the Northeast of Brazil (Bahia) are described. Data about pregnancy and birth, number, sex ratio, length and weight of neonates is given and discussed. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reproduction; Snakes; Viviparous. |
| Ano: 1994 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000200002 |
| |
|
|
| Carvalho,Cory T. de; Vasconcellos,Luiz E. M.. |
| The most frequent endoparasite of the Maned wolf - Chrysocyon brachyurus (Illiger, 1815) is the giant kidney-worm. Dioctophyma renale (Goeze, 1782). It has heen responsible for the majority of deaths of captive animals. Twenty-six marked wolves have been followed in the field with ear-tags and radio-collar tagged (Tab. II) to investigate their interactions with the environment, their diurnal shelters, movements and habits, and their delivery sites. Ten years of life history data have heen gathered. They are territorial and monogamous, and give birth to two or three young once a year, after a 63 days gestation, on average. Maned wolves inhabit the open areas and have omnivorous feeding habits. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maned wolf; C. brachyurus; Life history; Disease; Food; Reproduction. |
| Ano: 1995 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300018 |
| |
|
|
| MATTOS,Douglas da Cruz; SCRENCI-RIBEIRO,Rafaela; CARDOSO,Leonardo Demier; JUNIOR,Manuel Vazquez Vidal. |
| ABSTRACT The blue discus (Symphysodon aequifasciatus) is often sold for ornamental purposes. It is a neotropical cichlid from South America, which is native to the rivers of the Amazon basin of Brazil, Peru and Colombia. The purpose of this study was to characterize the reproductive behavior of S. aequifasciatus and identify features that can later be used by breeders to facilitate the handling and reproduction of this species in captivity. The experiment was divided into two stages: the first dealt with partner selection and couple formation to observe the behaviors of territoriality, pursuing, fleeing, biting, stay, protecting and cleaning of the substrate. The second stage documented mating behavior, nesting and parental care, to observe vibration,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonian Fish; Ornamental Fish; Larviculture; Reproduction; Behavior. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400433 |
| |
|
|
| BISNETO,Pedro Ferreira; KAEFER,Igor Luis. |
| ABSTRACT The pitviper Bothrops atrox is a widely distributed and medically important snake in Amazonia. Given that the reproductive and feeding biology of snakes varies geographically, we aimed to characterize the natural history of individuals from the central and southwestern portions of the biome. We analyzed museum-preserved specimens collected in the region between the metropolitan areas of the Brazilian cities of Manaus and Porto Velho. We took morphometric measurements and performed the analysis of gonads and digestive tracts of 109 individuals. Females attain sexual maturity with larger body sizes. Adults of the species show pronounced sexual dimorphism in body size, with females being larger. The reproductive cycle, especially in males, appears to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet; Natural history; Neotropics; Reproduction. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000200105 |
| |
|
|
| Lima,Jô de Farias; Silva,Luis Mauricio Abdon da; Silva,Thibério Carvalho da; Garcia,Jamile da Silva; Pereira,Ilana da Silva; Amaral,Karlia Dalla Santa. |
| Macrobrachium amazonicum is an indigenous prawn vastly distributed in basins of South America, widely exploited by artisanal fisheries in northern and northeastern Brazil and, with great potential for aquaculture. This study aimed to investigate general aspects of population structure and reproductive characteristics (size at first maturity, fecundity and reproductive output) of M. amazonicum from two important areas to artisanal prawn fishing located at the mouth of the Amazon River, State of Amapá. The specimens were captured using 20 handcrafted traps called "matapi". A number of 5,179 prawns were captured, 2,975 females and 2,195 males resulting in 1.35:1 female to male ratio. Santana Island and Mazagão Velho showed females predominated in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Palaemonid eggs; First maturation; Fecundity; Morphometric relationships; Reproduction. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000200010 |
| |
|
|
| Guimarães,Diva Anelie; Cardoso,Deise de Lima; Ferreira,Maria Auxiliadora Pantoja; Albuquerque,Natália Inagaki de. |
| Biological studies are necessary for the management of wildlife in captivity, and knowledge of reproduction is one of the important features for increasing production. The objective of the research was to determine the age at which male collared peccaries reach puberty. Testicular samples of 15 animals, aged 7 to 16 months, distributed into five groups (G1, G2, G3, G4 and G5) were used. The testes showed considerably increased weight, length and width (p < 0.05) from G1 to G3, whereas, from this group onward, the development of this organ was slower. There was positive correlation (p < 0.001) between the following testicular parameters: weight and length (r = 0.97), weight and width (r = 0.88), length and width (r = 0.92). Regarding the diameter of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reproduction; Testicles; Spermatogenesis; Tayassuidae. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100012 |
| |
|
|
| FRANÇA,Pedro Ferreira; SANTOS,Wirley Almeida; COSTA-CAMPOS,Carlos Eduardo; LOPES,Edson Varga. |
| ABSTRACT The Crimson Topaz, Topaza pella, is the least known of the two hummingbird species of this exclusively Amazonian trochilid genus, that also includes T. pyra. Most available information on T. pella nests, young and reproductive behavior is based on anecdotal observations from Guyana in the 1930s and 1950s. Here, we provide new data on nest description, eggs and parental care of T. pella, and the growth and development of two nestlings over a 22-day period. We studied four nests in areas of dense terra firme forest in the state of Amapá, Brazil. All nests were in forked branches of shrubs over water bodies, and had a cup-like form. One nest contained two elongated white eggs, and another, two nestlings, which had their development recorded until... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Amazonia; Hummingbirds; Reproduction; Crimson Topaz; Parental care. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000200138 |
| |
|
| |
|
| |
|
|
| Cassanego,Mara Betânia Brizola; Goldoni,Angélica; Heldt,Fágner Henrique; Osório,Daniela Montanari Migliavacca; Windisch,Paulo Günter; Droste,Annette. |
| Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at > 10 mg L-1. Secondary leaves of sporophytes grown in concentrations >... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fern; Heavy metals; Pollution; Reproduction; Species conservation; Wetlands. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004 |
| |
|
| |
|
|
| Pinheiro,Mardiore; Brito,Vinicius Lourenço Garcia de; Sazima,Marlies. |
| ABSTRACT This study describes the floral phenology and morphology, reproductive biology and pollinators for eight legume tree species, Schizolobium parahyba, Senna macranthera, and Senna multijuga (Caesalpinioideae), as well as Andira fraxinifolia, Lonchocarpus cultratus, Pterocarpus violaceus, Swartzia oblata, and S. simplex (Papilionoideae), in the Atlantic Forest in Southeast Brazil. All the studied species showed an annual flowering pattern, and almost all are of the cornucopia-flowering type, with the only exception being Swartzia oblata, which was of the steady-state type. In general, the legume flowers studied are conspicuous, mostly medium-sized, and offer nectar and/or pollen as a resource. Self-incompatibility associated with the production of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bee pollination; Bombus; Caesalpinioideae; Centridini; Euglossina; Faboideae; Floral biology; Reproduction; Self-incompatibility; Xylocopa. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300410 |
| |
|
|
| Jesus,Priscila Barreto de; Pestana,Edilene Maria dos Santos; Affe,Helen Michelle de Jesus; Rocha,Diogo Souza Bezerra; Caires,Taiara Aguiar; Nunes,José Marcos de Castro; Schnadelbach,Alessandra Selbach. |
| ABSTRACT Hypnea pseudomusciformis was recently described from South America, and has three morphological variants: “musciformis”, “nigrescens”, and “valentiae”. Information on the biology of these variants may help to explain this species’ wide morphological variation despite the absence of genetic divergence among variants. More morphological and ecological data has accumulated on the “musciformis” variant occurring on the Brazilian coast than for the others. In this study, we described the reproductive morphology of a tropical “nigrescens” population and investigated its phenology to provide crucial biological information about this taxon, and perhaps also assist in answering questions about the systematics of H. pseudomusciformis variants. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass; Cystocloniaceae; Ecology; Hypnea musciformis complex; Reproduction; Systematics. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100067 |
| |
|
| |
|
|
| Gomes, Maria das Graças; Empresa Estadual de Pesquisa Agropecuária da Paraíba S. A.; Mazzoni Gonzalez, Carmen Iara; Empresa Estadual de Pesquisa Agropecuária da Paraíba S. A.; Carvalho, Francisco Fernando Ramos de; Universidade Federal Rural de Pernambuco; Soares, Adriana Trindade; Empresa Estadual de Pesquisa Agropecuária da Paraíba S. A.. |
| This study evaluated the semen quality of Santa Ines sheep fed diets containing different levels of whole cottonseed (WCS). Twenty sheep were distributed into four groups that were given diets with 0; 20; 30; 40% of WCS. For this study the semen was collected by electroejaculation, and a monthly andrological examination was performed during nine months. The analyzed variables were: scrotal circumference (SC), appearance and color of the ejaculate, progressive motility (PM), vigor, mass movement (MM), total sperm concentration (spzX109), sperm morphology (SM) and blood hematocrit. The SC had no difference among diets, with mean 31.83 cm. The animals fed diets with WCS, presented mean intake of 9.16 mg gossypol kg BW, and were prone to present greenish... |
| Tipo: Pesquisa de campo; análise laboratorial |
Palavras-chave: 50400002- 50403001 andrological; Gossypol; Ram; Reproduction; Sperm motility. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12963 |
| |
|
|
| Gomes, Aline Dal`Olio; Vieira, Vanessa Aparecida Rocha Oliveira; Tabata, Yara Aiko; Takahashi, Neuza Sumico; Moreira, Renata Guimarães; Ribeiro, Cristiele Silva. |
| Triploid fish are usually sterile. Thus, the energy and nutrients intended for sexual maturation may be available to enhance flesh quality and physical growth. The present study aimed to investigate differences in the metabolic substrates, lipids and proteins, between storage tissues from diploid and triploid female rainbow trout. Monthly, metabolic substrates were quantified in liver, muscle, and ovaries, which were collected during the first reproductive cycle. In general, it was possible to identify a seasonal and similar deposition of metabolites in different tissues of 2n and 3n females, mainly at early stages of gonadal maturation. However, from the stages 5-6, the ovaries showed great differences between ploidies, with higher concentration of lipids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metabolism; Reproduction; Triploidy; Somatic indexes; Oncorhynchus mykiss.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/44580 |
| |
|
|
| Khalili, Mohsen; Chamani, Mohammad; Amanlou, Hamid; Nikkhah, Ali; Sadeghi, Aliasghar; Dehkordi, Farhad Kamali; Rafiei, Mohammad; Shirani, Vahid. |
| The purpose of this study was to investigate the effects of four types of diets containing different forms of selenium on the hematological blood parameters, reproduction and health of dairy cattle during the transition period. Twenty-four close-up dry cows with a mean of 259 ± 1days of pregnancy and expected 21 ± 1days prior to parturition were selected. The cows were fed four diets: 1) basal diet without selenium supplementation (C); 2) basal diet plus 0.5ppm selenium in the form of sodium selenite (Se-S) 3) basal diet plus 0.5ppm selenium in the form of selenium yeast (Se-Y); 4) basal diet plus 0.5ppm selenium in the form of selenomethionine (Se-M). Blood samples for measuring hematological blood parameters (including lymphocyte, red blood cells,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Selenium; Hematological blood parameters; Reproduction; Health; Dairy cows.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/45371 |
| |
|
|
| Silva, Luiz Antônio Franco da; UFG; Franco, Leandro Guimarães; UFG; Ferreira, Allice Rodrigues; UnB; Bernardes, Karollina Moraes; Autônoma; Costa, Anna Carolina da; UFG; Rabelo, Rogério Elias; UFG. |
| No presente estudo avaliaram-se aspectos relacionados ao comportamento diário e reprodutivo de fêmeas bovinas mestiças (Zebu x Holandesa) portadoras de dermatite digital, durante um período de 24 meses. Os bovinos foram distribuídos em três grupos (GI, GII, GIII), compostos por dez animais cada. No GI foram alocadas fêmeas bovinas portadoras de dermatite digital na forma erosiva, no GII na forma verrucosa eo GIII composto por animais clinicamente saudáveis. No comportamento diário e alimentar, os animais foram observados no piquete e durante a ordenha. Avaliaram-se a atitude do animal, se em posição quadrupedal ou decúbito, período de alimentação, frequência de ingestão de água, tempo de ruminação e ócio. Quanto ao comportamento reprodutivo, estudaram-se o... |
|
Palavras-chave: 5 5.04.00.00-2 Zootecnia bovinos; Casco; Doença podal; Reprodução 5 5.04.00.00-2 Zootecnia cattle; Hoof; Foot disease; Reproduction. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/499 |
| |
|
|
| Mataveli, Marcela; UEM; Moraes, Gentil Vanini de; UEM; Streit Junior, Danilo Pedro; Universidade Federal do Rio Grande do Sul; Ribeiro, Ricardo Pereira; UEM; Gasparino, Eliane; UEM. |
| A vitamina C atua na proteção de danos celulares provocados pelos radicais livres, sendo a suplementação considerada essencial para a maioria das espécies de peixes, uma vez que não a sintetizam em função da ausência da enzima L-gulonolactona oxidase. Assim, avaliou-se o efeito da suplementação de 0, 75, 150 e 225 mg de vitamina C kg-1 de ração na qualidade do sêmen em tilápias do Nilo (Oreochromis niloticus). Os parâmetros quali-quantitativos do sêmen não foram influenciados pela suplementação de vitamina C, exceto a motilidade progressiva que aumentou linearmente com adição de vitamina C. Conclui-se que os reprodutores de tilápias do Nilo devem ser suplementados com 225 mg de vitamina C kg-1 de ração. |
| Tipo: Pesquisa de campo e análise laboratorial |
Palavras-chave: 5.00.00.00-4; 5.05.00.00-7 Antioxidante; Radicais livres; Reprodução; Suplementação 5.05.04.00-2 Antioxidant; Free radicals; Reproduction; Supplementation. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/7836 |
| |
| Registros recuperados: 672 | |
|
|
|
