Biological aspects of Leucothyreus alvarengai Frey and Leucothyreus aff. semipruinosus Ohaus (Coleoptera, Melolonthidae, Rutelinae) in crop succession at central Brazil

Pereira, Alex Furquim; Rodrigues, Sérgio Roberto; Morón, Miguel Ángel

doi:10.1590/s0085-56262013005000028

Cited by 12 publications

(24 citation statements)

References 17 publications

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“…Pereira et al (2013) found larvae of L. alvarengai and L. aff. semipruinosus feeding on roots of soybean and corn in Tangará da Serra, MT, Brazil.…”

Section: Discussionmentioning

confidence: 99%

“…Larvae of L. dorsalis, L. alvarengai, L. aff. semipruinosus and L. ambrosius have been also reared in laboratory and fed on roots of B. decumbens (Rodrigues et al, 2010;Pereira et al, 2013;Gomes et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…semipruinosus (Ohaus 1917) emerge at the start of the rainy season, when they mate and reproduce. The immature stages complete the life cycle in less than a year (Pereira, Rodrigues, & Morón, 2013).…”

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confidence: 99%

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Biological aspects and mating behavior in Leucothyreus albopilosus (Coleoptera)

Rodrigues

Ferreira

Gomes

2016

RBT

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Abstract:The genus Leucothyreus has been linked to some commercial plant crop pests. Eventhough several species have been described for this genus, information about this group is still scarce. This study investigated some biological aspects and mating behavior in Leucothyreus albopilosus. Studies were conducted at the State University of Mato Grosso do Sul, in the municipalities of Aquidauana and Cassilândia, MS, Brazil. For biological studies, adults were collected with light traps from February 2011 to February 2012, and for behavior analyses from September to December 2014. Biological studies were undertaken every three days and included the eggs inspection, and the separation of the newly hatched larvae to observe and describe their developmental stages; to monitor larval growth and differentiate larval instars, we measured the larvae cephalic capsule. Life cycle was determined starting from the newly laid eggs until adult death. For mating behavior studies, adults obtained with light traps were taken to the laboratory. As soon as they started flying in the evening, couples were formed and copulation steps were recorded. in the field, we observed that adults were mostly collected during warmer and wetter periods (from August to March). Our results showed that the embryonic period of L. albopilosus lasted 20.5 days, the 1 st , 2 nd and 3 rd 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 L. albopilosus can be characterized as a univoltine species. Observations of mating behavior in the laboratory showed that, after the sunset, adults projected a small portion of clypeus near the soil surface and flew off seeking a female to mate. The female could accept or reject the male for mating. When the female accepted the male, copulation occurred from 19:00 to 23:00 hours, and lasted 19.45 minutes on average. Sometimes females refused to mate, probably because the male or female were not sexually mature to perform copulation, and there might be a chemical communication between the adults. Adults were observed feeding on ripe bananas (Musa sp., Musaceae) and on mangaba flowers (Hancornia speciosa, Apocynaceae) in the laboratory. With this work we contributed with the description of mating behavior in the genus Leucothyreus and concluded that the biological cycle was completed in less than 200 days. Rev. Biol. Trop. 64 (2): 547-557. Epub 2016 June 01.

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“…Pereira et al (2013) found larvae of L. alvarengai and L. aff. semipruinosus feeding on roots of soybean and corn in Tangará da Serra, MT, Brazil.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Biological aspects and mating behavior in Leucothyreus albopilosus (Coleoptera)

Rodrigues

Ferreira

Gomes

2016

RBT

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“…The lifecycle of L. femoratus is completed within 170.4 days , while those of L. alvarengai and of L. aff. semipruinosus are fulfilled in less than one year (Pereira et al 2013). For L. ambrosius, the end of the lifecycle is reached within 173.3 days ); yet for L. albopilosus, it lasts 185.5 days (Ferreira et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…One of these records was made by Puker et al (2011), who reported L. albopilosus Ohaus, 1917 in lesions of Eucalyptus citriodora Hook (Myrtaceae). Pereira et al (2013) sampled larvae of L. alvarengai Frey, 1976 andof L. aff. semipruinosus Ohaus, 1917 in crop succession systems of soybeans (Glycine max (L.) Merr., Fabaceae) and maize (Zea mays L., Poaceae).…”

Section: Introductionmentioning

confidence: 99%

The mating behavior of Leucothyreus marginaticollis Blanchard, 1843 (Coleoptera: Scarabaeidae: Rutelinae)

Ferreira

Rodrigues

2017

Biota Neotrop.

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In Brazil, there are several species of the genus Leucothyreus Macleay, 1819 occurring throughout the country; however, there are only a few studies describing their biological aspects, times of occurrence, associations of adults and juveniles with native or cropped plants, as well as their mating behavior. Thus, this study aimed to assess the mating behavior of Leucothyreus marginaticollis Blanchard, 1843. The study took place in an experimental area of the State University of Mato Grosso do Sul, in Aquidauana, MS, Brazil. Firstly, we sampled adult insects using light traps, from October to November 2013. Simultaneously, we registered the flight period in the field. Afterward, in the laboratory, males and females were separated and then combined into couples for observations of the mating steps. A large number of the adults mated, which lasted on average 22.71 min and occurred from 7 to 11 pm. After mating, part of the males released the females and the other part remained attached to them, which must have happened as an attempt to inhibit other males from mating with them. Moreover, a few females refused to mate with the established male, reinforcing the fact that the pairing of couples occurs after chemical identification among adults. In the field, the largest amount of adults was collected from 8 to 10 pm. Regarding eating habits, adults feed mostly on acerola leaves and flowers (Malpighia emarginata DC, Malpighiaceae), mastic gum leaves (Myracrodruon urundeuva Allemão, Anacardiaceae), grapes (Vitis vinifera L., Vitaceae), apples (Malus domestica Borkh., Rosaceae), and bananas (Musa sp. L., Musaceae). To the end of the experiment, we could clarify the mating steps of L. marginaticollis in order to assist in further extraction and identification of sexual pheromone. Keywords

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