scholarly journals Biological aspects of Cyclocephala tucumana Brethes, 1904 and Cyclocephala melanocephala (Fabricius, 1775) (Coleoptera: Scarabaeidae)

2013 ◽  
Vol 13 (1) ◽  
pp. 86-90 ◽  
Author(s):  
Gerson Aler de Lima Nogueira ◽  
Sérgio Roberto Rodrigues ◽  
Elison Floriano Tiago
Keyword(s):  
Adult Stage ◽  
Light Trap ◽  
Brachiaria Decumbens ◽  
Mato Grosso ◽  
Larval Instars ◽  
Embryonic Period ◽  
Biological Studies ◽  
Biological Aspects ◽  
Plastic Containers ◽  
Mato Grosso Do Sul

The studies were conducted on the biological aspects of Cyclocephala tucumana Brethes, 1904 and C. melanocephala (Fabricius, 1775) in Aquidauana, MS, Brazil. From January to December 2009 a light trap was installed to make collections of adults of C. tucumana and from January 2010 to February 2011 for collections of adults of C. melanocephala, at the experimental farm of the Universidade Estadual de Mato Grosso do Sul. Adults were maintained in plastic containers with soil and complete plants of Brachiaria decumbens Stapf cv. Basilisk to oviposition and start biological studies. Adults of C. tucumana were collected from September to November in the field; the embryonic period lasted on average 14.7 days, and the first, second and third larval instars lasted 47.7, 66.1 and 78.6 days, respectively. Pre-pupa and pupa phases lasted 98.2 and 15.1 days, respectively, and longevity of the adults was 13.3 days. From the egg to adult stage of C. tucumana was a period of average 211.2 days. Adults of C. melanocephala were collected from September to October 2010 and February 2011. The embryonic period lasted 17.8 days, and larvae in the first, second and third instars lasted 22.3, 21.0 and 27.0 days, respectively. The pre-pupa stage lasted 11.3 days and pupa phase lasted 13.3 days. The longevity of adults was 26 days, and the cycle from egg to adult lasted 113 days.

scholarly journals Biological aspects and mating behavior in Leucothyreus albopilosus (Coleoptera)

2016 ◽  
Vol 64 (2) ◽  
pp. 547 ◽  
Author(s):  
Sergio Roberto Rodrigues ◽  
Kleyton Rezende Ferreira ◽  
Elias Soares Gomes
Keyword(s):  
Mating Behavior ◽  
Light Trap ◽  
Pupal Stage ◽  
Mato Grosso ◽  
Embryonic Period ◽  
Laboratory Conditions ◽  
Biological Studies ◽  
Biological Aspects ◽  
Hancornia Speciosa ◽  
Mato Grosso Do Sul

Members of the genus <em>Leucothyreus</em> Macleay, are little investigated, therefore, studies were conducted in the municipality of Aquidauana and Cassilândia, Mato Grosso do Sul State, Brazil, to analyze the biological aspects and mating behavior in <em>Leucothyreus albopilosus</em>. Adults were captured in a light trap. Afterwards, they were sexed and couples were isolated in the laboratory for reproduction and mating behavior. The biological studies started from eggs under laboratory conditions. In the field, we observed that adults were collected mostly in warmer and wetter periods, from August to March. The embryonic period of <em>L</em>. <em>albopilosus</em> lasted 20.5 days, the 1<sup>st</sup>, 2<sup>nd</sup> and 3<sup>rd</sup> instars lasted 31.0, 33.1 and 85.6 days, respectively. The pupal stage lasted 20 days and the egg to adult period was completed in 185.5 days. These results suggest that <em>L.</em> <em>albopilosus</em> can be characterized as univoltine specie. In laboratory, the adults performed the flying action after the sunset and normally the male seeks the female to start mating. The copulations occurred from 19:00 to 23:00 hours and lasted 19,45 minutes in average. The female is able to refuse the male in order to not start the copulation process. Adults were observed feeding on ripe bananas (<em>Musa</em> sp., Musaceae) and on mangaba flowers (<em>Hancornia speciosa</em>,<em> </em>Apocynaceae).

scholarly journals Fotossensibilização e colangiopatia associada a cristais em caprinos mantidos sob pastagens de Brachiaria decumbens no Mato Grosso do Sul

1998 ◽  
Vol 28 (3) ◽  
pp. 507-510 ◽  
Author(s):  
Ricardo Antônio Amaral de Lemos ◽  
Luciano Nakazato ◽  
Geraldo Ortega Herrero Junior ◽  
Arley Coelho da Silveira ◽  
Lenir Cardoso Porfírio
Keyword(s):  
Brachiaria Decumbens ◽  
Mato Grosso ◽  
Mato Grosso Do Sul

Neste estudo são descritos dois surtos de fotossensibilização hepatógena em caprinos mantidos em pastagem de Brachiaria decumbens, no Mato Grosso do Sul. Os surtos ocorreram nos meses de maio e junho, sendo acometidos 2 caprinos de 4 meses de idade em um total de 18 animais (caso 1) e, 15 caprinos de 3 a 4 meses de idade, de um total de 100 (caso 2). Observou-se elevação dos níveis séricos de gama GT (gama glutamil transferase) em 2 caprinos que apresentavam sinais clínicos de fotossensibilização. Os achados histopatológicos revelaram a presença de colangiopatia associado à presença de cristais refringentes. A B. decumbens é incriminada como a provável etiologia da fotossensibilização.

scholarly journals Species of Geotrupidae (Coleoptera: Scarabaeoidea) in Aquidauana, Mato Grosso do Sul, Brazil

2013 ◽  
Vol 13 (1) ◽  
pp. 349-352
Author(s):  
Sérgio Roberto Rodrigues ◽  
Anderson Puker
Keyword(s):  
Organic Matter ◽  
Light Trap ◽  
Abundant Species ◽  
Ecological Role ◽  
Mato Grosso ◽  
The Family ◽  
Total Capture ◽  
First Time ◽  
Mato Grosso Do Sul

Coleoptera of the family Geotrupidae play an important ecological role in the decomposition of animal and plant organic matter. In Brazil there is little information on the diversity and distribution of this group, thus, this work had a purpose to study Geotrupidae species, occurring in Aquidauana, MS. A survey for geotrupids was conducted in Aquidauana, Mato Grosso do Sul, Brazil. Beetles were captured using a light trap over a period of two years, from January 2006 to December 2007. A total of 907 specimens were collected and identified to eight species. From the subfamily Bolboceratinae, the species identified were Bolbapium minutum (Luederwaldt, 1929) and Pereirabolbus castaneus (Klug, 1845). In the subfamily Athyreinae the species identified were Athyreus bilobus Howden & Martínez, 1978, Parathyreus aff. bahiae, Neoathyreus aff. julietae, N. sexdentatus Laporte, 1840, N. centromaculatus (Felsche, 1909) and N. goyasensis (Boucomont, 1902). Four species (A. bilobus, N. centromaculatus, N. goyasensis and P. castaneus) are reported for the first time in Aquidauana, MS, Brazil. The most abundant species, representing 85.9% of the total capture, was B. minutum. The greatest numbers of specimens was caught from October to December of both years of the study.

scholarly journals Fotossensibilização e colangiopatia associada a cristais em ovinos em pastagem com Brachiaria decumbens

1996 ◽  
Vol 26 (1) ◽  
pp. 109-113 ◽  
Author(s):  
Ricardo Antonio Amaral de Lemos ◽  
Luiz Carlos Louzada Ferreira ◽  
Sérgio Martins da Silva ◽  
Luciano Nakazato ◽  
Sandro Cesar Salvador
Keyword(s):  
Brachiaria Decumbens ◽  
Mato Grosso ◽  
Mato Grosso Do Sul

Dois surtos de fotossensibilização foram observados em ovinos em pastagens de Brachiaria decumbens no Estado de Mato Grosso do Sul. O quadro clínico incluía edema e dermatite da face, orelhas e pálpebras, conjuntivite, descarga ocular, cegueira e aumento nos níveis séricos de ASTe GT. Alguns ovinos recuperaram-se e outros morreram em 3-7 dias. O fígado apresentou leve aumento de volume e consistência e coloração amarelo-esbranquiçada ou marrom-amarelada. Os ductos biliares e a vesícula biliar estavam dilatados. A principal alteração histológica foi a presença de cristais birrefringentes, eticamente ativos nos ductos biliares e no citoplasma de hepatócitos periportais. Necrose do epitélio dos ductos biliares, fibrose periportal com infiltração de células inflamatórias e proliferação de ductos biliares também foram observadas. Grupos de células grandes com núcleo excêntrico e citoplasma espumoso ocorriam nas regiões periportal e centrolobular. Numerosos grupos destas células também foram observadas no córtex e na medula dos linfonodos hepáticos. Não foram encontradas quantidades contáveis de esporos de Pithomyces chartarum nas amostras da pastagem onde estavam os ovinos; de 30 culturas de P. chartarum isoladas dessas amostras, apenas uma produziu esporidesmina. Conclui-se que a intoxicação foi causada pela ação tóxica de Brachiaria decumbens.

scholarly journals Biology of Bemisia tuberculata Bondar (Aleyrodidae) and parasitism by Encarsia porteri (Mercet, 1928) (Hymenoptera, Aphelinidae) on cassava plants

2012 ◽  
Vol 72 (4) ◽  
pp. 903-907 ◽  
Author(s):  
NN. Andrade Filho ◽  
AR. Roel ◽  
AM. Penteado-Dias ◽  
RB. Costa
Keyword(s):  
Adult Stage ◽  
Egg Laying ◽  
Reproductive Capacity ◽  
Experimental Unit ◽  
Nymphal Stage ◽  
Mato Grosso ◽  
Cassava Leaves ◽  
Stage Of Development ◽  
Average Size ◽  
Mato Grosso Do Sul

The whitefly Bemisia tuberculata has caused serious damage to cassava producing areas in the state of Mato Grosso do Sul. However, little is known about the biological characteristics of this species. The objective of this study was therefore, to monitor the development of this species bred on cassava plants under controlled greenhouse conditions, and to determine its most vulnerable stages and its reproductive capacity, as well as measuring the length and width each stage of development. To obtain these data, adult individuals were kept in voile traps on cassava leaves of five different plants, totalling ten leaves. After 24 hours the leaves were removed from the traps thus making each egg-laden leaf an experimental unit. The lowest mortality rate was record in the last nymphal stage ('pupae) compared with the other development stages. The highest mortality occurred in the nymphs at the 2nd and 3rd instars. Each female laid an average of 6.3 eggs in 24 hours. Thirteen days after egg laying, every one of the nymphs was fixed on the leaves of cassava plants. From the egg laying stage up until the adult stage, the process took 26 days. The proportion of females was 73.5%. The average size of the B. tuberculata egg was 163.22 µm in length and 72.39 µm in width and the "pupae" is 915.82 µm in length and 628.71 µm in width. The measurements of males were 797.16 µm in length and 200.81 µm in width and the length females 916.12 µm in length and 338.99 µm in width. The parasitoid Encarsia porteri (Mercet, 1928) (Hymenoptera, Aphelinidae) was found in the insect stock culture.

scholarly journals Description of mating behavior, life cycle, and antennal sensilla of Cyclocephala putrida Burmeister, 1847 (Coleoptera, Scarabaeidae, Dynastinae)

2020 ◽  
Vol 20 (3) ◽  
Author(s):  
Fabíola Gonzaga Saldanha ◽  
Sérgio Roberto Rodrigues ◽  
Ricardo Aparecido Amaro ◽  
Juares Fuhrmann
Keyword(s):  
Life Cycle ◽  
Mating Behavior ◽  
Light Trap ◽  
Nutrient Cycle ◽  
Antennal Sensilla ◽  
Mato Grosso ◽  
Chemical Recognition ◽  
Egg Deposition ◽  
Insect Communication ◽  
Mato Grosso Do Sul

Abstract The genus Cyclocephala is common in Brazil (Coleoptera, Scarabaeidae, Dynastinae). The adults of some species are important pollinators, and the larvae develop in the soil, feed on organic matter, and contribute to nutrient cycle, but immatures of some species feed on plant roots, and some were registered causing damage in crops. The mating process of some phytophagous scarab beetles has a chemical recognition step, and the antenna is the main structure involved in the detection of odorants associated with insect communication. In the present study the mating behavior, life cycle, and antennal sensilla of C. putrida are described. The study was conducted at the Universidade Estadual de Mato Grosso do Sul, Cassilândia, Brazil. Adults were collected by a light trap installed from January 2016 to December 2017 and were taken to the laboratory for studies. Adults swarms are brief and were registered from January to February, and specimens were mostly collected at 20:00 to 22:00h. Chemical recognition may occur at least during one of the mating steps, during which the couple kept their antennae moving and the lamellae open, while females select males. In laboratory, the mating process lasted 7.5 minutes on average. The antennae of females have about 3399 sensilla and males about 4229 sensilla. Sensilla placodea types I, II, and III are the most abundant, and sensilla ampullacea, basiconica, and coeloconica are also present. The embryonic period lasted 16.0 days; first, second and third instars lasted 16.0, 48.3, and 165.3 days, respectively. The pupal period lasted 24.0 days. The period between egg deposition and adult emergency is about 271.5 days.

scholarly journals Spontaneous poisoning by Brachiaria decumbens in goats

2016 ◽  
Vol 36 (5) ◽  
pp. 389-396 ◽  
Author(s):  
Fábio B. Rosa ◽  
Mara I.B. Rubin ◽  
Tessie B. Martins ◽  
Ricardo A.A. de Lemos ◽  
Danilo C. Gomes ◽  
...  
Keyword(s):  
Weight Loss ◽  
Bile Ducts ◽  
Clinical Signs ◽  
Mesenteric Lymph Nodes ◽  
Brachiaria Decumbens ◽  
Mato Grosso ◽  
Mesenteric Lymph ◽  
Orange Yellow ◽  
Foamy Macrophages ◽  
Mato Grosso Do Sul

Abstract: An outbreak of Brachiaria decumbens poisoning in goats in the state of Mato Grosso do Sul, Brazil, is described. Out of a herd of about 1,000 goats, seven goats died after showing photosensitivity (3 out 7 goats) and icterus (4/7). Other clinical signs included lethargy, dehydration and weight loss (7/7). At necropsy there was either hepatomegaly or liver atrophy; orange, yellow or gray discoloration - were observed in the liver of six goats. Two had accentuation of lobular pattern and punctate, linear or stellar fibrous depressions were randomly distributedover the capsular surface. Macroscopic changesattributedto liver failure consisting of hydropericardium (2/7) and ascites (2/7) were observed. Histologically, there was accumulation of refringent crystals in the bile ducts and infiltration of foamy macrophages in the liver of all goats. Foamy macrophages were also present in the hepatic and mesenteric lymph nodes of two goats. The diagnosis of B. decumbens poisoning was based on epidemiology, clinical signs, necropsy findings and histopathology.

scholarly journals Survey of saproxylophagous Melolonthidae (Coleoptera) and some biological aspects in Aquidauana, MS

2013 ◽  
Vol 13 (3) ◽  
pp. 38-43 ◽  
Author(s):  
Felix Placência Garcia ◽  
Sérgio Roberto Rodrigues ◽  
Cristiane Aparecida Constante Bagnara ◽  
Diogo Silva de Oliveira
Keyword(s):  
Nutrient Recycling ◽  
Pupal Stage ◽  
State University ◽  
Forest Fragment ◽  
Biometric Data ◽  
Mato Grosso ◽  
The Family ◽  
Biological Aspects ◽  
Mato Grosso Do Sul ◽  
Third Instar Larvae

Coleoptera of the family Melolonthidae plays an important role in decomposition and nutrient recycling in the environment, however the information of this group is scarce in Brazil; therefore studies were developed with the objective of understanding the biological aspects of saproxylophagous. The studies were developed in the experimental farm of the State University of Mato Grosso do Sul, in Aquidauana, from March 2011 to April 2012. In a forest fragment of the cerrado, when encountering fallen tree trunks, they were cut into small pieces for extraction and acquisition of immature and adult Melolonthidae. Larvae were taken to the laboratory where they were reared until emergence of adults, obtaining biological and biometric data. A total of 145 larvae and 11 adults were collected. Third instar larvae of Strategus surinamensis Burmeister, 1847, collected in this phase lasted 230 days and 31.3 days in the pupal stage. Third instar larvae of Phileurus valgus (Linnaeus, 1758), in this phase lasted 49 days and 13 days in the pupal stage. Third instar larvae Pelidnota fulva Blanchard, 1850, after being collected remained for 61 days in this phase and 25.3 days in the pupal stage. AdultsPelidnota aff. vazdemeloi were collected inside tree trunks. ToMacraspis festiva Burmeister, 1844, the third instar larvae collected lasted for 39 days at this stage, and pupae lasted 17 days. Third instar larvae of Rutela lineola(Linnaeus, 1767), in this phase lasted 23 days, and pupae lasted 16.3 days. ToHoplopyga liturata (Olivier, 1789), third instar larvae collected lasted 21 days and pupae lasted 18 days. To Hoplopyga boliviensis (Moser, 1918), third instar larvae lasted 33 days and pupae 16 days. Second and third larval instarMarmarina maculosa (Olivier, 1789) collected lasted respectively, 105 and 171.3 days and pupae lasted 26 days. The species collected in greatest quantity were M. festiva with 75 larvae,R. lineola with 20 larvae and H. boliviensis with 18 larvae. Larvae were collected during several months, where in July 32 larvae were sampled and in August 39 larvae, the largest quantities encountered.

scholarly journals Fungos e nematoides associados a sementes de forrageiras tropicais

2013 ◽  
Vol 39 (3) ◽  
pp. 201-203 ◽  
Author(s):  
Guilherme Mallmann ◽  
Jaqueline Rosemeire Verzignassi ◽  
Celso Dornelas Fernandes ◽  
Jaime Maia dos Santos ◽  
Marta Helena Vechiato ◽  
...  
Keyword(s):  
Minas Gerais ◽  
Sao Paulo ◽  
Panicum Maximum ◽  
São Paulo ◽  
Brachiaria Brizantha ◽  
Brachiaria Decumbens ◽  
Mato Grosso ◽  
Brachiaria Humidicola ◽  
Fusarium Sp ◽  
Mato Grosso Do Sul

Objetivou-se avaliar a incidência de fungos e nematoides em sementes de Brachiaria sp. e Panicum maximum produzidas nos estados de Mato Grosso do Sul (MS), Mato Grosso (MT), Goiás (GO), Minas Gerais (MG) e São Paulo (SP). Os principais fungos encontrados nas sementes foram Bipolaris sp., Curvularia sp. e Phoma sp.. As menores incidências destes fungos foram encontradas nas sementes das cultivares BRS Piatã e Xaraés de Brachiaria brizantha e Brachiaria decumbens cv. Basilisk, oriundas dos estados de GO, MG e MS, respectivamente. As cultivares Marandu e BRS Piatã, provenientes das várias regiões, apresentaram elevada ocorrência de Aphelenchoides sp. e Ditylenchus sp.. Sementes da cultivar Humidicola, de Brachiaria humidicola, produzidas em MS e SP, não apresentaram associação com nematoides. As sementes de Panicum maximum cv. Massai e cv. Mombaça apresentaram maiores incidências de Bipolaris sp., Cladosporium sp., Curvularia sp., Fusarium sp. e Phoma sp., bem como de Aphelenchoides sp. e Ditylenchus sp., especialmente nas sementes produzidas em MT. Alguns dos patógenos encontrados são agentes causais de doenças de grande importância em forrageiras, a exemplo de Bipolaris sp., causando a mancha foliar do Panicum, de alta severidade em Tanzânia, proporcionando sérios comprometimentos da sustentabilidade das pastagens.

scholarly journals Aspects of mating behavior and antennal sensilla in Anomala inconstans Burmeister, 1844 (Coleoptera: Scarabaeidae: Rutelinae)

2019 ◽  
Vol 19 (3) ◽  
Author(s):  
Sérgio Roberto Rodrigues ◽  
Juares Fuhrmann ◽  
Ricardo Aparecido Amaro
Keyword(s):  
Mating Behavior ◽  
Chemical Communication ◽  
Light Trap ◽  
Calling Behavior ◽  
Antennal Sensilla ◽  
Mato Grosso ◽  
Breeding Sites ◽  
Sexual Pheromones ◽  
Mato Grosso Do Sul

Abstract: When suitable, adults of Scarabaeidae usually form swarms to find food and breeding sites. The steps of mating behavior can be mediated by chemical communication, and antennal sensilla are released volatiles detection structures, as sexual pheromones. In present work the mating behavior and the antennal sensilla of Anomala inconstans Burmeister, 1844 are described. The study was conducted at the Universidade Estadual de Mato Grosso do Sul, Cassilândia, Brazil from March 2015 to December 2017. Adults were collected through a light trap and taken to the laboratory for studies. Field and laboratory observations provided data for the description of the steps of mating behavior. Adults swarms were registered from September to November 2015 at 05:30 pm to 00:00 am. Females display a calling behavior from 05:25 pm to 08:00 pm, in which they rub their posterior legs against their abdomen, and after a few minutes males are able to locate them. In laboratory, the mating process lasted 20.4 minutes on average, and the possibility of chemical communication between adults was here discussed. The antennae of the species have trichoid, chaetica, placoid types I, II and III, and coeloconic types I and II sensilla. Placoid sensilla are the most abundant and females have more sensilla than males.

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