scholarly journals First gonadal maturation of Pinirampus pirinampu (Siluriformes: Pimelodidae) in the Pantanal, Mato Grosso do Sul State, Brazil

2006 ◽  
Vol 66 (1b) ◽  
pp. 317-323 ◽  
Author(s):  
J. Peixer ◽  
L. A. F. Mateus ◽  
E. K. Resende
Keyword(s):  
Fish Species ◽  
Gonadal Development ◽  
Breeding Period ◽  
Maturation Process ◽  
Mato Grosso ◽  
Male And Female ◽  
Gonadal Maturation ◽  
Males And Females ◽  
Mato Grosso Do Sul ◽  
Immature Fish

Information regarding the reproductive cycle of commercially exploited fish species is extremely important for their appropriate management. The reproductive size of Pinirampus pirinampu (Spix, 1829) was determined for a population studied in the Pantanal wetlands of western Brazil. Samples were taken in September, October, and December 1997, and in February and March 1998. Gonadal stages were macroscopically determined and a monthly gonadossomatic index (GSI) was used to determine the breeding period. The length of the first gonadal maturation was determined by classifying male and female adults and immature fish into length classes. The data on the adult individuals were plotted on graphs and the median values estimated to find the length at which 50% of the individuals reached maturity (L50). L100 was also determined. Males and females in the gonadal maturation process were recorded from October on, and the highest frequency was found to occur in February. Individuals with empty gonads occurred from February onwards. The GSI showed that gonadal development began in September and reached its peak in February. The L50 was 574 mm for females and 536 mm for males, while the L100 was 590 mm for females and 580 mm for males.

Plasma prolactin and gonadotrophins during gonadal development and the onset of photorefractoriness in male and female starlings (Sturnus vulgaris) on artificial photoperiods

1983 ◽  
Vol 97 (2) ◽  
pp. 253-260 ◽  
Author(s):  
A. Dawson ◽  
A. R. Goldsmith
Keyword(s):  
Gonadal Development ◽  
Sturnus Vulgaris ◽  
Prolactin Secretion ◽  
Plasma Prolactin ◽  
Blood Samples ◽  
Male And Female ◽  
Gonadal Maturation ◽  
Testis Volume ◽  
Males And Females

Previous studies have shown that an increase in prolactin secretion coincides with the beginning of the photorefractory phase in starlings (Sturnus vulgaris). To determine how closely this increase is associated with the onset of refractoriness, we kept starlings on photoperiods which would induce refractoriness at different rates. Four groups of males and females were transferred from 8 h light: 16 h darkness (8L : 16D) to either 18L : 6D, 13L : 11D, 11L : 13D or 8L : 16D. Weekly blood samples were assayed for LH, FSH and prolactin and the males were frequently laparotomized to determine testis volume. In males, both 18L and 13L induced marked increases in plasma gonadotrophin levels and rapid gonadal maturation. A photoperiod of 18L induced an earlier onset of refractoriness (2–4 weeks) than 13L (6 weeks). In both cases prolactin levels began to increase immediately before the onset of refractoriness. Males on 11L showed a slight increase in gonadotrophin levels and slow gonadal maturation. There was no increase in prolactin levels and these birds did not become refractory. Hormonal data from the females were similar to those from males. These results confirm that increased prolactin secretion is associated, in some way, with the onset of photorefractoriness in this species, although whether it is a cause or consequence of photorefractoriness, or simply of gonadal regression, remains unclear.

scholarly journals Asymptomatic infection in family contacts of patients with human visceral leishmaniasis in Três Lagoas, Mato Grosso do Sul State, Brazil

2008 ◽  
Vol 24 (12) ◽  
pp. 2827-2833 ◽  
Author(s):  
Ana Lúcia Lyrio de Oliveira ◽  
Anamaria Mello Miranda Paniago ◽  
Marcos Antônio Sanches ◽  
Maria Elizabeth Cavalheiros Dorval ◽  
Elisa Teruya Oshiro ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Family Income ◽  
Asymptomatic Infection ◽  
Family Characteristics ◽  
Mato Grosso ◽  
Phlebotomine Sand Flies ◽  
Symptomatic Disease ◽  
Significant Difference ◽  
Males And Females ◽  
Mato Grosso Do Sul

The Brazilian city of Três Lagoas, Mato Grosso do Sul State, has experienced an urban outbreak of visceral leishmaniasis since 2000. In 2002, due to the increase in the number of cases, 46 families with cases of visceral leishmaniasis were studied to verify the prevalence of asymptomatic infection in household contacts. Indirect immunofluorescence and ELISA showed a 36.4% positive infection rate. There were no cases of symptomatic disease among these contacts. There was no statistically significant difference in gender or age. Median age was 21 years, and the 10-19-year age bracket was the most heavily affected (23%). As for family characteristics, no differences were observed in schooling or family income; most families (58.7%) owned their homes, which were built of masonry (97.8%) and had adequate infrastructure. All the families reported what were probably phlebotomine sand flies in the peridomicile. In conclusion, asymptomatic visceral leishmaniasis infection is frequent and occurs in both males and females, regardless of age.

On the spider genus Cryptachaea from Peru, Bolivia and cave environments in Brazil: a new species, additional descriptions and new records (Araneae, Theridiidae)

Zootaxa ◽  
2019 ◽  
Vol 4646 (2) ◽  
pp. 271-292
Author(s):  
MANOELA SANTANNA ◽  
EVERTON NEI LOPES RODRIGUES ◽  
IGOR CIZAUSKAS ◽  
ANTONIO DOMINGOS BRESCOVIT
Keyword(s):  
New Species ◽  
New Records ◽  
Minas Gerais ◽  
Sao Paulo ◽  
São Paulo ◽  
Mato Grosso ◽  
Males And Females ◽  
First Time ◽  
Mato Grosso Do Sul ◽  
A New Species

In this paper a new species of Cryptachaea Archer, 1946 based on males and females is described from Brazilian caves: Cryptachaea pilar Santanna & Rodrigues, new species from the states of Minas Gerais and São Paulo. The females of Cryptachaea parana (Levi, 1963) and C. schneirlai (Levi, 1959) are described and illustrated for the first time. Cryptachaea uviana (Levi, 1963) is synonymized with C. migrans (Keyserling, 1884). The species Cryptachaea alacris (Keyserling, 1884), C. benivia Rodrigues & Poeta, 2015, C. parana (Levi, 1963) and C. schneirlai (Levi, 1959) are recorded for the first from Brazil; and C. migrans for the first time from Bolivia. Additionally, new records from Brazilian caves are provided for Cryptachaea parana, from the states of Tocantins, Goiás, Minas Gerais, Mato Grosso do Sul and São Paulo; C. schneirlai and C. alacris from the state of Pará; C. dea (Buckup & Marques, 2006) and C. rioensis (Levi, 1963) from Pará and Minas Gerais, C. jequirituba (Levi, 1963) from Minas Gerais and C. benivia from São Paulo. 

scholarly journals Cattle loading rates in different truck models and their relationship with bruises on bovine carcasses

2020 ◽  
Vol 50 (5) ◽  
Author(s):  
Kethylleen de Carvalho Ferreira ◽  
Aline Correia Furtado ◽  
Hugo Pereira Flores ◽  
Pollyanna Ricartes de Oliveira de Oliveira ◽  
Augusto Galhardo Gonçalves ◽  
...  
Keyword(s):  
Animal Welfare ◽  
The Body ◽  
Farm Animal Welfare ◽  
Mato Grosso ◽  
Loading Rates ◽  
Randomized Design ◽  
Males And Females ◽  
Completely Randomized Design ◽  
Number Of Males ◽  
Mato Grosso Do Sul

ABSTRACT: This study sought to evaluate the number of bruises on bovine carcasses and their relationship with loading rates in different truck models. Bruising percentages in the hindquarter, forequarter and short rib regions were evaluated. The space occupied on the truck by each animal in m² was defined as the Practiced area, obtained by dividing the body area by the number of males and females transported in straight trucks (10.60 x 2.40 m) and livestock trailers (14.80 x 2.60 m), 240 and 168, and 120 and 93, respectively, and 80 males in a straight truck with trailer configuration (17.50 x 2.60 m). The minimum area occupied by the animals was assessed according to the Farm Animal Welfare Council (FAWC) and Animal Welfare Advisory Committee (AWAC). The data was analyzed in a completely randomized design and included two sex classes, three carcass regions and three truck types. For males, the minimum areas (m²) calculated by the FAWC and AWAC were smaller (1.37 and 1.29 m², respectively) for the straight truck. The straight truck with trailer configuration had the lowest (P=0.0025) bruising index in the forequarter region (15.1%) and the highest (P=0.047) in the short rib region (30.5%). Females transported in the livestock trailer had a higher (P<0.001) percentage of bruises in the forequarter region (51.7%). There was a relationship between the high bruising rates and the loading rate Practiced for the males. Estimations made by the AWAC are close to those practiced in the upper Pantanal region of Mato Grosso do Sul, Brazil.

scholarly journals Differential leucokocyte counts in ''dourado'', Salminus maxillosus Valenciennes, 1840, from the Mogi-Guaçu River, Pirassununga, SP

2003 ◽  
Vol 63 (3) ◽  
pp. 517-525 ◽  
Author(s):  
M. J. T. Ranzani-Paiva ◽  
E. L. Rodrigues ◽  
M. L. Veiga ◽  
A. C. Eiras ◽  
B. E. S. Campos
Keyword(s):  
Gonadal Development ◽  
Total Weight ◽  
Individual Animal ◽  
Blood Samples ◽  
Male And Female ◽  
Gonadal Maturation ◽  
Leukocyte Counts ◽  
The Mean ◽  
Immature Cells

From August, 1996 to December, 1997, 293 of ''dourado'' specimens, Salminus maxillosus (Valencienes, 1840), of various sizes, were caught in Mogi-Guaçu River, Emas Falls, for hematologic studies. Total weight (Wt in g) and length (Lt in cm) were taken for each individual animal. Smears were prepared from blood samples and utilized for differential leukocyte counts (lymphocytes, neutrophils, monocytes, eosinophils, special granulocytic cell and immature cells). The mean percentages of leukocytes were determined according to sex and stage of gonadal maturation (immature, in maturation, mature, spent and resting). Significant differences between male and female occurred only for the special granulocytic cell. In analyzing the leukocyte profile during gonadal development, only female showed significant differences in mean percentages of lymphocytes, neutrophils, monocytes and eosinophils.

Development and outcome of intrasexual contests in males and females of Chalcides viridanus (Fam. Scincidae) along breeding period

Behaviour ◽  
2019 ◽  
Vol 156 (13-14) ◽  
pp. 1349-1369
Author(s):  
P. Sánchez-Hernández ◽  
M. Molina-Borja
Keyword(s):  
Assessment Model ◽  
Breeding Period ◽  
Head Width ◽  
Tongue Flick ◽  
Self Assessment ◽  
Male And Female ◽  
Hind Limbs ◽  
Significant Difference ◽  
Males And Females ◽  
First Time

Abstract Morphological and behavioural traits influence contest development and outcome. We analysed morphological and behavioural traits in male and female staged contests of Chalcides viridanus along breeding time. There was no significant difference in any morphologic trait for winner and looser male contenders; larger hind-limbs and heads were significantly associated to winner females. ‘Approach’ was positively while ‘flee’ negatively associated to winner males. ‘Tongue-flick’ and ’approach’ were positively associated to female winners and ‘flee’ to losers. Contest intensity was higher in male than in female contests. For males it was higher in May than in March or April but for females in April and May than in March. Contest intensity was positively related to head width in loser males, suggesting fitting to a pure self-assessment model. For females there was no significant association. For the first time we have shown that skink female contests are as complex as those of males.

A new genus of Phlugidini (Orthoptera: Tettigoniidae: Meconematinae) with asymmetrical mandibles

Zootaxa ◽  
2017 ◽  
Vol 4286 (3) ◽  
pp. 391 ◽  
Author(s):  
JULIANA CHAMORRO-RENGIFO ◽  
RENAN DA SILVA OLIVIER
Keyword(s):  
Type Species ◽  
New Genus ◽  
The State ◽  
Mato Grosso ◽  
Male And Female ◽  
Mato Grosso Do Sul

During collection of katydids carried out in the state of Mato Grosso do Sul, Brazil, five individuals of a species belonging to Phlugidini were captured. Males have remarkable asymmetric mandibles, different from those of the already known genera. The female is very similar to one recently described from Bolivia in genus Phlugiola Karny, 1907. However, male and female feature a combination of characters that does not conform to that genus. Here we propose a new monospecific genus, Anisophlugis Chamorro-Rengifo & Olivier n. gen., whose type species is Phlugiola appendicula Gorochov, 2015. 

Unraveling the white-clothed Diestostemma Amyot & Serville: a taxonomic revision of the American sharpshooters of the D. bituberculatum complex (Hemiptera: Cicadellidae)

Zootaxa ◽  
2017 ◽  
Vol 4281 (1) ◽  
pp. 135 ◽  
Author(s):  
ÂNGELO PARISE PINTO ◽  
GABRIEL MEJDALANI ◽  
DANIELA MAEDA TAKIYA
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Species Complex ◽  
Taxonomic Revision ◽  
Mato Grosso ◽  
Male And Female ◽  
The Status ◽  
Males And Females ◽  
New Geographical Record ◽  
General Appearance

The taxonomy of the Proconiini genus Diestostemma Amyot & Serville is revisited and the D. bituberculatum species complex is proposed to include D. bituberculatum (Signoret), D. rubriventris (Schmidt), and four new species. A revision of this species complex includes a new geographical record for D. rubriventris and description and illustration of three Ecuadorian and one Brazilian new species based on males and females: D. albinoi sp. nov. (Ecuador: Orellana Province), D. cavichiolii sp. nov. (Brazil: Mato Grosso State), D. gervasioi sp. nov. (Ecuador: Orellana Province), and D. olivia sp. nov. (Ecuador: Orellana Province). These species, all named as homages to the treehopper specialist Dr. Albino Morimasa Sakakibara and his former students, are very similar to D. bituberculatum in general appearance, differing mainly by the shape of the male and female terminalia, but also by slight aspects of the external morphology. The status of the name-bearing specimen of D. rubriventris is modified from lectotype to holotype. The study shows that the species diversity of Diestostemma is far from being entirely known. However, several old available names should be evaluated in a full revision context before description of other new species. 

scholarly journals Fish, lower Ivinhema River basin streams, state of Mato Grosso do Sul, Brazil

Check List ◽  
2008 ◽  
Vol 4 (3) ◽  
pp. 226 ◽  
Author(s):  
Yzel Rondon Súarez
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Mesh Size ◽  
Sampling Effort ◽  
Mato Grosso ◽  
Bootstrap Procedure ◽  
Few Data ◽  
Western Portion ◽  
Mato Grosso Do Sul ◽  
Made In

The Ivinhema River basin is one of the main tributaries of the western portion of Paraná River. However,few data are available on the fish communities of its streams. Monthly samples were made in seven streams of the lower portion of the basin, in the state of Mato Grosso do Sul, using a rectangular sieve 1.2 x 0.8 m, with 2 mm mesh size. Forty-six fish species were found in these streams. The richness estimated according to the bootstrap procedure was 50 species. At least two of the captured species were not previously recorded for the upper Paraná basin, indicating the need of new sampling effort in this region.

scholarly journals Trophic structure of fish assemblages in the Lower Miranda River, Pantanal, Mato Grosso do Sul State, Brazil

2000 ◽  
Vol 60 (3) ◽  
pp. 389-403 ◽  
Author(s):  
E. K. de RESENDE
Keyword(s):  
Fish Species ◽  
Trophic Structure ◽  
Fish Assemblages ◽  
Trophic Guilds ◽  
Trophic Guild ◽  
Mato Grosso ◽  
River Floodplain ◽  
Mato Grosso Do Sul

Of a total of 101 fish species caught in the Lower Miranda River floodplain, 29 were omnivorous, 16 ichthyophagous, 12 herbivorous, 18 detritivorous, 8 zooplanktophagous, 7 insectivorous, 2 lepidophagous, 4 ichthyophagous/insectivorous and 4 zooplanktophagous/insectivorous. Almost half of the species belong to omnivorous and detritivorous trophic guilds. The same is not true when biomass is considered. The number of fish species by trophic guild didn't change along the year whereas the biomass changed significantly. The frequency of abundant fish species was not the same for the sampled environments.

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