Larval biometry of Simulium rubrithorax (Diptera: Simuliidae) and size comparison between populations in the states of Minas Gerais and Roraima, Brazil

Alvan-Aguilar, Miriam Adriana; Hamada, Neusa

doi:10.1590/s0074-02762003000400015

Cited by 15 publications

(4 citation statements)

References 13 publications

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“…These measurements were placed in a frequency distribution graphic to visualise the number of larval instars. The limits of each instar were defined as cephalic capsule readings less frequently (Alvan‐Aguilar & Hamada ). To verify the pattern of growth during the larval stage, the mean measurement of the head capsule in each instar defined (response variable) was plotted against the number of larval instars (predictor variable), and a linear regression model, using R version 3.2.3 package (R Core Team ), was established to verify the geometric pattern of growth.…”

Section: Methodsmentioning

confidence: 99%

How climate influences the biology and behaviour of Phyllophaga capillata (Coleoptera: Melolonthidae) in the Brazilian Cerrado

Oliveira

Frizzas

2017

Austral Entomology

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Phyllophaga capillata (Blanchard) is the most important soil pest in soybean crops in Central Brazil (Federal District and Goiás state). The objective of this work was to study the bio-ecology of P. capillata in the field in the Cerrado of Central Brazil, relating its biology and behaviour to the climatic characteristics of this biome. The study was conducted over three years in a soybean [Glycine max (L.) Merr.] production area (≈6000 ha) in the Federal District. Field samplings were taken to observe the biological stages of P. capillata, preferred oviposition sites and the adult swarming period. Phyllophaga capillata presented an univoltine cycle that lasted about 10 months of egg to inactive adults, and 12 months until the appearance of active adults. Eggs were found in the field in October and November. The larval stage occurred between November and June. Pre-pupae were observed in June and the pupae between July and August. Inactive adults were observed in August and September, and the swarming period was between September and December. Females preferred to oviposit in sites with taller plants. This species synchronises its active phases (larvae and active adults) with soybean cultivation and the rainy season (October/ March) in the Brazilian Cerrado. Alternatives for pest management based on their bio-ecological characteristics are presented.

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Section: Methodsmentioning

confidence: 99%

How climate influences the biology and behaviour of Phyllophaga capillata (Coleoptera: Melolonthidae) in the Brazilian Cerrado

Oliveira

Frizzas

2017

Austral Entomology

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“…whitmani. The egg burster exists only on the dorsal surface of the Þrst instar head and has been used to differentiate the Þrst instar from the second instar in Diptera, along with other taxonomic characters (Breland 1959, Alvan-Aguilar andHamada 2003). Details of the microanatomy of the sand ßy egg burster can be seen on the apex of head capsule when the larval head is completely out of the eggshell (Fig.…”

Section: Resultsmentioning

confidence: 99%

Ultrastructural Comparison of External Morphology of Immature Stages of Lutzomyia (Nyssomyia) intermedia and Lutzomyia (Nyssomyia) whitmani (Diptera: Psychodidae), Vectors of Cutaneous Leishmaniasis, by Scanning Electron Microscopy

Bahia¹,

Secundino²,

Miranda³

et al. 2007

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Lutzomyia (Nyssomyia) intermedia (Lutz & Neiva 1912) and Lutzomyia (Nyssomyia) whitmani (Antunes & Coutinho 1939) (Diptera: Psychodidae) are vectors of American cutaneous leishmaniasis in several endemic regions of Brazil. We analyzed the external morphological aspects of the immature stages of these two vectors by using scanning electron microscopy. In general, the larval stages of the two species are morphologically similar, although some differences were noted. Detailed examination of the eggs of both species revealed similar exchorionic ornamentations of unconnected parallel ridges. The larval head capsules are well defined, heavily sclerotized, and bear prominent chewing mouthparts. The abdominal segments are easily recognized by the presence of prolegs on their ventral surfaces. The morphology of the anal lobe on the terminal abdominal segment differs between the two species. We found the following three types of sensillae inserted on the antennae: (1) clavate basiconic; (2) small, blunt coeloconic; and (3) multipourous clavate coleoconic. In addition; five subtypes of trichoid sensillae were found on the larval body: (1) long, (2) short, (3) curved long, (4) brush-like, and (5) weakly brush-like. The caudal filaments located on the last abdominal segment were recognized as long trichoid sensillae. We observed pores on the surface of the clavate coelonic sensillae and on the caudal filaments that presumably function as chemoreceptors. The larvae of the two species show similarities in the lobular-form antennae of L1 larvae, which changes to digitiform in second instar (L2), L3, and L4. This study demonstrated that the external surface of the eggs and larvae of Lu. intermedia and Lu. whitmani are morphologically similar, but they can be distinguished by details in the microanatomy observed by scanning electron microscopy.

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“…Head capsule width is frequently used for instar determination in insects (Daly 1985), and many aspects regarding population dynamics of insects may be accurately known if this information is available (Queiroz 2002;Alvan-Aguilar & Hamada 2003;Guillén & Heraty 2004). Obviously, the reconstruction of the life history of insects based on measurements of head width will be more accurate and easier if the number of instars is more constant at species level.…”

Section: Identification Of Sap-feeder Instars In Angelabella Tecomaementioning

confidence: 99%

Identification of sap-feeder instars in Angelabella tecomae Vargas & Parra (Lepidoptera, Gracillariidae) feeding on Tecoma fulva fulva (Bignoniaceae)

Storey-Palma¹,

Benítez²,

Parra³

et al. 2012

Rev. Bras. entomol.

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Larval biometry of Simulium rubrithorax (Diptera: Simuliidae) and size comparison between populations in the states of Minas Gerais and Roraima, Brazil

Abstract: The number of larval instars of Simulium (Hemicnetha) rubrithorax Lutz (Diptera: Nematocera) was determined using the lateral length of the head capsule. In this study 1,035

Cited by 15 publications

References 13 publications

How climate influences the biology and behaviour of Phyllophaga capillata (Coleoptera: Melolonthidae) in the Brazilian Cerrado

How climate influences the biology and behaviour of Phyllophaga capillata (Coleoptera: Melolonthidae) in the Brazilian Cerrado

Ultrastructural Comparison of External Morphology of Immature Stages of <I>Lutzomyia</I> (<I>Nyssomyia</I>) <I>intermedia</I> and <I>Lutzomyia</I> (<I>Nyssomyia</I>) <I>whitmani</I> (Diptera: Psychodidae), Vectors of Cutaneous Leishmaniasis, by Scanning Electron Microscopy

Identification of sap-feeder instars in Angelabella tecomae Vargas & Parra (Lepidoptera, Gracillariidae) feeding on Tecoma fulva fulva (Bignoniaceae)

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