|
|
|
| Registros recuperados: 672 | |
|
| |
|
|
| Branco,Joaquim Olinto; Fracasso,Hélio Augusto Alves; Moraes-Ornellas,Valéria dos Santos. |
| The Brown Booby, Sula Leucogaster, is one of the most common species of marine birds of the Brazilian coast and, in spite of being a viable subject for long-term studies, in Brazil there are scarce demographic descriptions of this species obtained from observations made in sets of consecutive years. This paper presents breeding information collected in monthly samples taken in the Moleques do Sul Island, Florianópolis, Santa Catarina, during a five year period. The main island was divided into three different study areas, in which adult censuses were conducted, along with counts of number of nests, eggs, chicks and incubating adults. No significant change was found in these numbers during the sampled years and the breeding season extended over the entire... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brown Booby; Reproduction; Demographic parameters; Santa Catarina; Brazil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400039 |
| |
|
| |
|
|
| Lima,Camila S.; Fabián,Marta Elena. |
| Abstract Bats of the Phyllostomidae family exhibit different reproductive patterns in Neotropical regions and the strategy adopted depends on the regional climate. Here we studied the reproductive biology of Artibeus fimbriatus at the southern limit of their distribution in Brazil. This region has no rainy season, and the climate is characterized by high temperatures and variable photoperiods. We examined 129 A. fimbriatus females over several months, and used histological procedures where necessary in order to determine whether bats were pregnant. Females exhibited a long reproductive period and were pregnant from June until February. The reproduction events were found to be dependent on the photoperiod, but independent of annual accumulated... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Phyllostomidae; Photoperiod; Reproduction; Seasonal. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400504 |
| |
|
|
| Viana,Diego Carvalho; Rui,Leandro Almeida; Santos,Amilton Cesar dos; Miglino,Maria Angélica; Assis Neto,Antônio Chaves de; Araujo,Lianne Polliane Fernandes; Oliveira,Antonia Santos; Sousa,Alana Lislea. |
| This study aimed to characterize the morphology of the vas deferens ofKinosteron scorpioides by macroscopic and microscopic analysis. Were used 20 adult male jurarás collected at regular intervals during the year and divided into four experimental groups in the rainy and dry seasons, being processed for light microscopy, scanning electron microscopy and transmission electron microscopy. Morphometry for tubular and luminal diameters and epithelial height were also performed. On rainy season, vas deferens presented pseudostratified epithelium with cylindrical cells, spermatozoids and milky fluid in the lumen, with cytoplasmic organelles and lipid vesicles. On dry season, epithelium was pseudostratified with cuboid cells, with cellular debris and no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kinosternon; Reproduction; Vas deferens; Morphometry; Ultrastructural. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300114 |
| |
|
|
| Castiglioni,Daniela da Silva; Limberger,Marcio; Castro,Vanessa da Silva; Ubessi,Francieli. |
| Abstract The study of population and reproductive traits provides information about the ecological structure of natural populations. This study aimed to characterize dynamics and reproductive traits of Hyalella palmeirensis from a natural pond from southern Brazil. The amphipods were sampled monthly (August 2012 to July 2013) by a person with the aid of a hand net for 20 minutes. Ovigerous females and pre-copulatory pairs were individualized in the field. A total of 12,325 individuals were sampled, being 1,421 males, 6,983 females (including 215 ovigerous females) and 3,921 juveniles. Paired and unpaired males were significantly greater in size than females. There was a positive correlation between body size (CL) of paired males and females. Males and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fecundity; Body size; Hyalella palmeirensis; Sex ratio; Reproduction; Recruitment. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000200204 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Casatti,Lilian. |
| This study was carried out on a first order stream in the Morro do Diabo State Park, southeastern Brazil. Three equidistant stream stretches - upper, middle, and lower - were chosen for underwater observations and fish collections that were performed in the dry (June and September 2000) and wet seasons (December 2000 and March 2001). Of the 18 fish species documented, 11 were considered resident year round. Phalloceros caudimaculatus, Hypostomus nigromaculatus, Hisonotus francirochai, Trichomycterus diabolus, and Hypostomus ancistroides represented 90% of the collected specimens. The highest richness and abundance occurred during the wet season. In general, the longitudinal addition of species follows the addition of microhabitats. Sexually mature... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Upper Rio Paraná; Stream fishes; Conservation; Reproduction; River continuum concept. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000100009 |
| |
|
| |
|
|
| Polanco F.,Andrea; Acero P.,Arturo; Santos-Acevedo,Marisol; Narváez,Juan Carlos; Navas S.,Gabriel R.; Flórez,Paola. |
| Veintiuna especies de peces arrecifales frecuentes y abundantes en el área de Santa Marta y Parque Nacional Natural Tayrona (Caribe colombiano) se identificaron como promisorias para el mercado de peces marinos ornamentales. La selección se basó en información secundaria y observaciones en campo y laboratorio, dando prioridad a especies o familias que han sido reproducidas exitosamente en confinamiento y que según las observaciones se adaptan satisfactoriamente al cautiverio, con proyección a su futura reproducción, levantamiento y manutención en confinamiento. Así mismo, para algunas de ellas se obtuvieron datos importantes para su acoplamiento y manutención en acuario. Se proponen a Microspathodon crysurus, Coryphopterus personatus, Elacatinus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Peces marinos; Especies ornamentales; Colombia; Mantenimiento en confinamiento; Reproducción; Marine fishes; Ornamental species; Colombia; Maintenance in captivity; Reproduction. |
| Ano: 2011 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612011000100008 |
| |
|
|
| 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 |
| |
|
| |
|
|
| Freitas-Ribeiro,Gláucia Marques; Furlong,John; Vasconcelos,Viviane Oliveira; Dolinski,Cláudia; Loures-Ribeiro,Alan. |
| Engorged and partially engorged females of Boophilus microplus were exposed to 600; 3,000; 6,000 and 30,000 infective juveniles of Steinernema carpocapsae Weiser, 1955 Santa Rosa and All strains per dish, under lab conditions. Eggs weight, pre-laying period, laying period, survival period, reproductive efficiency rate, percentage of larval eclosion and lethal concentrations of 50% and 90% (CL50 and CL90) were calculated for engorged females. In the case of partially engorged females, only egg weight, survival period and CL50 and CL90 were calculated. All biological parameters of engorged or partially engorged females were altered by exposition of S. carpocapsae infective juveniles (IJs), Santa Rosa and All strains (p<0.05). The increase in the response... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Boophilus microplus; Steinernema carpocapsae; Entomopathogenic nematodes; Cattle tick; Reproduction. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800007 |
| |
|
|
| Rigolon,Luiz Paulo; Prado,Ivanor Nunes do; Cavalieri,Fábio Luiz Bim; Nascimento,Willian Gonçalves do; Copovila,Luiz Carlos; Ramos,Fabíola dos Santos; Moreira,Fernanda Barros. |
| The aim of this work was to study effect of the dry matter intake level on the concentrations of glucose, insulin, urea, estrogen and progesterone in the blood and the level of IGF-I in the follicular liquid of heifers. Twenty seven crossbred heifers were used, in three treatments: 1.2, 1.6 and 2.6% of the live weight of dry matter intake (DMI) daily. The sanguine concentrations of glucose and estrogen were higher in the animals with 1.6% of DMI and the insulin levels were higher in the animals with 2.6% of DMI. There was an increase in the sanguine levels of urea with the increase of the DMI. There was no effect of the DMI on the progesterone levels in the sanguine plasma collected from the jugular. The progesterone levels in caudal vena were higher in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: FSH; Hormones; Intake; Nutrition; Reproduction; Superovulation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100008 |
| |
|
| |
|
| |
|
| |
| Registros recuperados: 672 | |
|
|
|
