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| Registros recuperados: 672 | |
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| Fialho,Clarice B.; Schifino,Lucia C.; Verani,José Roberto. |
| The Custódias lagoon has a great importance in the Tramandaí system, because it works as reproduction area, feeding and nursery grounds to several fish species. The aim of this work is the study of aspects related to the reproduction of Oligosarcus jenynsii (Günther, 1864) as such as reproductive period, sexual ratio, fecundity and size of the first gonadal maturation. The specimens were sampled monthly from October/1994 to October/1995. For each sex, maturation curves were established, based on the monthly variation of the gonadossomatic index mean values, as well as, the relative frequencies of the sexual maturity stages. Breeding seasons took place during the winter and spring. The sex ratio was significanthly different from 1:1, with more females than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Characi formes; Oligosarcus jenynsii; Fecundity; Reproduction. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300020 |
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| Gomes,Iracema David; Araújo,Francisco Gerson; Azevêdo,Marcia Cristina Costa de; Pessanha,André Luiz Machado. |
| The reproductive cycle of the marine catfishes Genidens genidens Valenciennes, 1833 and Cathorops spixii Agassiz, 1839 in the Sepetiba Bay, was assessed by an annual period of sampling from October 1993 to September 1994. The fishes were caught by standardized otter trawl and environmental parameters of temperature, salinity and transparency of water were recorded at each sampling. Five gonadal phases were described, based in macroscopic observations. Changes in the gonadosomatic index (GSI) and in the percentual of stages of gonadal development showed that G. genidens spawns in Summer/early Autumn, coinciding with low salinity and high temperature and transparency. Cathorops spixii spawns in late Spring/early Summer, coinciding with rising temperature and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Siluriformes; Ariidae; Reproduction; Marine Catfish; Sepetiba Bay. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000600017 |
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| Noro,Clarissa Köhler; Buckup,Ludwig. |
| The crustaeeans of Aeglidae family oeeur in South America's fresh water enviranments, featuring as important links in the food chains. The present article has the intention to give an acount of the results from investigations made from April/2000 to July/2001 on the biological and ecological features of Aegla leptodactyla Buckup & Rossi, 1977, an endemic species from the headwaters of the Rio Pelotas Basin in Rio Grande do Sul State, Brazil. The sampling was performed at the Rio da Divisa, tributary of Rio Pelotas, municipal district of São José dos Ausentes, Rio Grande do Sul. The animais were collected with a hand net (puçá) at four different sites of the river. High contents of dissolved oxygen was verified, with a medium value of 108% and alow... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aegla leptodactyla; Habitat; Reproduction; Recruitment. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400011 |
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| Scenna, L.B.. |
| Se estudia la biología y ecología reproductiva de las ocho especies de Bathyraja presentes en la plataforma continental argentina (Atlántico S.O.), a través del análisis del tamaño corporal, las cápsulas de huevos, el desarrollo de los embriones, la talla de madurez sexual, las variaciones en las condiciones reproductivas, las áreas de puesta y la segregación espacial de los individuos. El material examinado provino de campañas de investigación llevadas a cabo por el Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) entre 34º40'S y 54º30'S, desde septiembre 2003 hasta octubre 2007. La información presentada en el trabajo demuestra que las especies del Género Bathyraja en la plataforma argentina maduran a una talla alta en relación a la Lt... |
| Tipo: Theses and Dissertations |
Palavras-chave: Reproduction; Biogeography; Morphometry; Fish eggs; Sexual maturity; Spawning grounds; Marine fish; Rajidae; Marine environment. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4776 |
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| Sanjuan-Muñoz1,Adolfo; Bustos-Montes,Diana; Polo-Silva,Carlos Julio; Henao-Castro,Alejandro; Marrugo,Milena; Delgado-Huertas,Antonio; Vinyoles-Cartanya,Dolors; Acero P.,Arturo. |
| ABSTRACT Lionfish was studied in the mesophotic environment. 237 specimens were observed, most in the upper mesophotic zone. Males were larger than females and differences between sexes in growth models were found. Sixteen prey items were identified, the most important being the teleost families Acanthuridae and Monacanthidae, and the crustacean Penaeidae. The mean of δ13C was -17.08 ± 0.36 ‰ and δ15N was 8.68 ± 0.46 ‰, with no differences between sexes. Lionfish occupies a less extensive isotopic niche in mesophotic environment than in shallow sectors; there is an isotopic niche overlap between sexes. Likewise, lionfish has specialized trophic habits. All specimens were mature and in females regression phase predominated. In females, condition factor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trophic ecology; Reproduction; Biological invasion; Mesophotic environment; Stable isotopes. |
| Ano: 2022 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612022000100075 |
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| Ferreira,Katiane M.. |
| The córrego Paulicéia is a direct tributary of the rio Mogi-Guaçu, located in Santa Rita do Passa Quatro, State of São Paulo, Southeastern Brazil. This stream runs inside a savannah-like (cerrado) environment and it associated vegetation. Biological and ecomorphological aspects of its fish community were studied in three stretches of the stream, denominated herein as the upper, middle and lower courses. The fish fauna recorded in this study consisted of 15 species, belonging to five orders and nine families, based in a total of 715 collected individuals representing 1,450 kg of biomass. The most important abiotic factors related to the occurrence and distribution of the fish fauna were the substrate, current speed, and presence or absence of riparian... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ichthyofauna; Trophic ecology; Reproduction; Upper Paraná basin; Cerrado Biome. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300012 |
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| Martins,Rodrigo Silvestre; Juanicó,Marcelo. |
| ABSTRACT The biology and ecology of southwestern Atlantic loliginid squids have been intensively researched in the last few decades, mostly off the Brazilian southern coast. However, information gathered by scientific research cruisers, either past or recent, is limited. Three species of loliginid squids - the warm-tempered Doryteuthis sanpaulensis (Brakoniecki, 1984), plus the tropical D. pleii (Blainville, 1823) and Lolliguncula brevis (Blainville, 1823) - were sampled along 16 degrees of latitude on the southwestern Atlantic (22-38°S). The samples were obtained mostly from oceanographic surveys, but also included squids caught by commercial fisheries, and a few specimens from museum collections. Squid response to abiotic variables, morphological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Competition; Morphology; Myopsida; Population biology; Reproduction. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100337 |
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| Corrêa,Carlos Eduardo; Chaves,Paulo de Tarso; Guimarães,Paulo Ricardo Bittencourt. |
| This study provides information on the biology of C. bleekerianus from Paraná State coast, Brazil, assembling data about its abundance, size structure, diet and reproduction. Monthly collections were accomplished in 1999 and 2000 in the internal continental shelf, with trawl net. The catch-per-unit-effort did not vary significantly among the seasons. In the summer, the individuals were larger, followed by autumn, spring and winter. C. bleekerianus was predominantly planktivorous and the most frequent items in its diet were copepods followed by diatomaceous algae. Seasonal variation in the frequency values of the gonad maturation stages, gonadossomatic index and gonadal condition factor indicated that the reproductive period encompassed spring and summer.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance; Brazil; Chirocentrodon; Clupeiforms; Feeding; Reproduction. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300013 |
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| Isler,Iván Valdebenito. |
| This work presents a conceptual analysis of the main biotechnologies used in Chilean salmoniculture, which is based on the production of Atlantic salmon (Salmo salar, 356.407 t),silver salmon or coho (Oncorhynchus kisutch, 116.481 t), (O. tshawytscha, 2.062 t) and rainbow trout (O. mykiss, 189.178 t).These activities are focused on the photoperiod artificial manipulation to obtain out-of-season spawning, in the use of hormonal therapies which allow synchronizing the final oocyte maturation (FOM) and sexual maturity acceleration or the increase in milt volume produced by males. Such actions are carried out using GnRHa in doses close to 10 µg/kg of fish. Once sexual maturity is reached, in vitro manipulation of gamets must often be done due to either the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biotechnology; Induced spawning; Photoperiod; Reproduction; Sex manipulation; Thermoperiod. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300004 |
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| ZÚCCARI, C. E. S. N.; SERENO, J. R. B.. |
| The present work aimed to present a literature research about two deer species - Blastocerus dichotomus (llliger, 1815) - Cervo-do-pantanal and Ozotocerus bezoarticus (Linnaeus, 1758) - Veado-campeiro, due to their importance in Central Brazil. The main aspects studied were: species biology, density and populational distribution; factors related to their decreased numbers; and the use of biotechniques of animal husbandry for propagation and conservation of deer, as environmental compensation. Using available data in the literature, it is possible to realize that depending on the region studied, both deer species showed population fluctuation in the past years. Apart local population density, both are part of the red data book on native Brazilian species of... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Cervo; Preservação; Preservation.; Biologia Animal; Densidade Demográfica; Reprodução Animal; Veado.; Cervidae; Demography; Reproduction; Zoology.. |
| Ano: 2006 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570264 |
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| FONSECA, J. F. da; CRUZ, R. do C.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G. de; VIANA, J. H. M.. |
| A criação de caprinos e ovinos é uma atividade agropecuária de elevada importância social, econômica e consolidada em determinadas regiões do Brasil, enquanto em outras, mostra-se em fase emergente. Diversos aspectos apontam para o desenvolvimento desta cadeia produtiva no país. Dentre eles, a produção nacional, especialmente de carne e leite, sequer abastece o mercado interno, mesmo considerando que o consumo ainda é reduzido em relação a outros países. Em função da qualidade e diferencial dos produtos de origem caprina e ovina, acredita-se que em pouco tempo a demanda aumentará expressivamente, requerendo sistemas de criação focados na produtividade. Assim, torna-se fundamental desenvolver e adequar tecnologias voltadas ao incremento produtivo. Para... |
| Tipo: Livro técnico (INFOTECA-E) |
Palavras-chave: Transferência nuclear; Cloning.; Biotecnologia; Caprino; Clonagem; Inseminação artificial; Ovino; Reprodução animal; Sêmen.; Goats; Biotechnology; Reproduction; Sheep; Transgenic animals.. |
| Ano: 2014 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1027956 |
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| Montezano,Débora G.; Sosa-Gómez,Daniel R.; Paula-Moraes,Silvana V.; Roque-Specht,Vânia F.; Fronza,Edegar; Barros,Neiva M.; Specht,Alexandre. |
| ABSTRACT The biotic potential and reproductive parameters of Spodoptera dolichos (Fabricius, 1794) were evaluated under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 25 couples were evaluated. The longevity of females (12.9 days) was not significantly different than that of males (12.4 days). The mean durations of the pre-, post- and oviposition periods were 3.0, 0.4 and 10.4 days, respectively. The mean fecundity was 4,086.0 eggs per female and mean fertility was 3,557.8 larvae per female. On average, a female copulated 1.4 times. The biotic potential of S. dolichos was estimated at 7.138 x 1018 individuals/female/year. The net reproductive rate (Ro)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Development; Fecundity; Reproduction; Spermatophore. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600485 |
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| Montezano,Débora Goulart; Specht,Alexandre; Sosa-Gómez,Daniel Ricardo; Roque-Specht,Vânia Ferreira; Barros,Neiva Monteiro de. |
| Biotic potential and reprodutcive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory: This study aimed to evaluate the biotic potential and reproductive parameters of Spodoptera eridania (Stoll, 1782) under controlled conditions (25 ± 1ºC, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity and fertility of 15 couples was evaluated. The longevity of females (10.80 days) was not significantly higher than those of males (9.27 days). The mean durations of the pre, post and oviposition periods were 2.067, 0.600 and 8.133 days, respectively. The mean fecundity per female was 1,398 eggs and the mean fertility was 1,367.50 larvae. On average, females copulated 1.133 times. A strong... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Development; Insecta; Reproduction; Spermatophore. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000300014 |
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| MONTEZANO,DÉBORA G.; SPECHT,ALEXANDRE; SOSA-GÓMEZ,DANIEL R.; ROQUE-SPECHT,VÂNIA F.; BORTOLIN,TARCISO M.; FRONZA,EDEGAR; PEZZI,PATRÍCIA; LUZ,PRISCILA C.; BARROS,NEIVA M.. |
| This study aimed to evaluate the biotic potential, life table parameters and fertility of Spodoptera albula (Walker, 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photo phase). The longevity, pre, post and oviposition periods, fecundity and fertility of 13 couples were evaluated. The longevity of females (13.500 days) was significantly higher than those of males (11.154 days). The mean durations of the pre, post and oviposition periods were 2.615, 1.769 and 9.385 days, respectively. The mean fecundity was 1.417.69 eggs and mean fertility was 1.340.401 larvae, per female. On average, females copulated 1, 231 times. A strong positive correlation was observed between the number of copulations and fecundity (r = 0.847, p <0.001), as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Development; Fecundity; Reproduction; Spermatophore. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200723 |
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| Registros recuperados: 672 | |
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