Seleção de microhabitat por larvas de formiga-leão Myrmeleon brasiliensis (Návas) (Neuroptera: Myrmeleontidae), em uma Reserva Florestal, Aquidauana, MS

Lima, Tatiane do Nascimento; Faria, Rogério Rodrigues

doi:10.1590/s1519-566x2007000500026

Cited by 20 publications

(20 citation statements)

References 9 publications

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“…Larger body size among larvae of M. brasiliensis leads to a higher probability of cannibalism. This is expected, since the success of predation is related to the increase in trap size, because larger individuals build larger traps (Lima & Faria, 2007). To minimize the effects of cannibalism, larvae distance themselves from each other, and this distancing increases with the increase of body size.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, it is observed that larger larvae are more isolated, whereas smaller larvae are observed in groups. The larvae of M. brasiliensis are grouped according to the reflex of the oviposition behavior of adult females and the heterogeneous distribution of suitable areas for the construction of traps (Lima & Faria, 2007;Lima & Lopes, 2016). However, with the development of the larvae, there is a greater distance among these organisms.…”

Section: Discussionmentioning

confidence: 99%

“…The area is characterized by vegetation of the savannah-like biome denominated Cerrado (Fina & Monteiro, 2013). The sandy soil is favorable to the construction of pits by the larvae (Lima & Faria, 2007).…”

Section: Methodsmentioning

confidence: 99%

“…Competition among antlion larvae is seen in the quest for space to build their traps, in the search for prey and in the occurrence of cannibalism (Lima, 2016). To minimize the effects of competition, the larvae demonstrate spatial distribution that ranges from random to uniform, depending on the need to increase the density of the groups (Lima & Faria, 2007). Moreover, a minimum distance between larvae is maintained to diminish the effects of the sand particles tossed by neighboring larvae during the maintenance of the pit (Simberloff, King, Dillon, Lowrie, Lorence, & Schilling, 1978;Lima, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Effect of asymmetric competition on distance among <i>Myrmeleon brasiliensis</i> (Návas, 1914) (Neuroptera: Myrmeleontidae) larvae

Lima

Freire

Lima

2019

Acta Sci. Biol. Sci.

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In cases of asymmetric competition, larger individuals of many animal species have a greater probability of acquiring territory, gaining initial access to resources and finding a mate in comparison to smaller individuals. The competition among larvae of the antlion Myrmeleon brasiliensis (Neuroptera, Myrmeleontidae) is observed in the search for space for the construction of traps, in the forage for prey, and in the occurrence of cannibalism. The body size of the larvae is proportional to the size of the traps and the success of predation. Thus, larger specimens are better competitors in terms of capturing preys (asymmetric competition). The aim of the present study was to determine the effects of asymmetric competition in M. brasiliensis regarding the distance among these larvae. The study was developed in a permanent reserve area, located in the municipality of Aquidauana, from the Mato Grosso do Sul state, Brazil. For the laboratory experiments, we collected M. brasiliensis larvae and placed two larvae in plastic pots. The observations occurred by the visual search of traps, when a larva was seen in the diameter of its trap and the trap of its closest neighbor. Next, the trap size and the distance between them were measured for a period of 15 days. The results of the present study demonstrate that the largest M. brasiliensis larvae were outside the clusters. Within these clusters, the larvae moved away from each other because of the size of their traps, as the larger the neighboring larvae the greater the distance between them. Thus, the asymmetric competition between M. brasiliensis (larger larvae are better competitors) suggests a spatial arrangement among the larvae that is guided by the variable size of the trap.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of asymmetric competition on distance among <i>Myrmeleon brasiliensis</i> (Návas, 1914) (Neuroptera: Myrmeleontidae) larvae

Lima

Freire

Lima

2019

Acta Sci. Biol. Sci.

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“…Given that the larvae Myrmeleon brasiliensis (Návas, 1914) select protected sites to build their traps and that trap maintenance has a high energy cost (Lima and Faria, 2007), we expected that constant maintenance and reconstruction of the trap would negatively affect larval development and the adult emergency conditions since the larvae would cease to accumulate the energy resources required for their full development. Based on the these considerations, the objective of this study was to observe, under laboratory conditions, how the energy cost of the maintenance of traps of M. brasiliensis larvae affected: 1) larval development time, 2) time spent in the pupal stage, 3) larval mortality rate and 4) adult size.…”

Section: Introductionmentioning

confidence: 99%

Effect of energetic cost to maintain the trap for Myrmeleon brasiliensis (Neuroptera, Myrmeleontidae) in its development and adult size

Lima

Silva

2017

Braz. J. Biol.

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Antlion larvae Myrmeleon brasiliensis Návas, 1914 (Neuroptera, Myrmeleontidae) are sit-and-wait predators who build traps to catch their prey. The aim of this study was to observe under laboratory conditions, how the energy cost spent on maintenance of their traps affects: the larval developmental time, time spent as a pupa, mortality rate of larvae and adult size. M. brasiliensis larvae were collected in the municipality of Aquidauana, Mato Grosso do Sul, Brazil and were individually maintained in plastic containers and subjected to two treatments. In the control treatment larvae did not have their traps disturbed while in the manipulated treatment, larvae had their traps disturbed three times a week. The experiments were followed until adult emergence. When the adults emerged, their body size (head-abdomen), anterior and posterior wing span and width were measured. Furthermore, the number of larvae that died during the experiment was recorded. The results showed that the larvae whose traps were manipulated had longer larval development time, smaller pupal development time and were smaller adults. It can be concluded that the energy expenditure spent on maintenance of the trap constructed by M. brasiliensis larvae can affect the development of negative ways, represented by a longer larval development and reduced adult size.Keywords: ant-lion larvae, body size, sit-and-wait predators.Efeito do custo energético com a manutenção da armadilha de Myrmeleon brasiliensis (Neuroptera, Myrmeleontidae) no seu desenvolvimento e no tamanho dos adultos ResumoEfeito do custo energético com a manutenção da armadilha de Myrmeleon brasiliensis no seu desenvolvimento e no tamanho dos adultos. Larvas de formiga-leão Myrmeleon brasiliensis são predadores senta-espera que constroem armadilhas para a captura de suas presas. O objetivo deste trabalho foi observar em laboratório, como o gasto energético despendido com a manutenção dessas armadilhas afeta: o tempo de desenvolvimento larval, o tempo de pupa, a taxa de mortalidade das larvas e o tamanho dos adultos. M. brasilienses foram coletadas no município de Aquidauana, Mato Grosso do Sul, então foram individualizadas em potes plásticos e submetidas a dois tratamentos. No tratamento controle, as larvas não tiveram suas armadilhas perturbadas e no tratamento manipulado, as larvas tiveram as suas armadilhas perturbadas três vezes por semana. Os experimentos foram acompanhados até a emergência dos adultos. Quando esses emergiam, era medido o seu tamanho corporal (cabeça-abdômen), envergadura da asa anterior e posterior e largura da asa anterior e posterior. Além disso, foi contabilizado o número de larvas mortas no decorrer dos experimentos. Como resultado foi observado que as larvas manipuladas apresentaram o tempo de desenvolvimento larval maior, o tempo de pupa menor e o tamanho dos adultos foi menor. Pode-se concluir que o gasto energético despendido com a manutenção da armadilha construída pelas larvas M. brasiliensis pode afetar o seu desenvolvimento de maneiras negativa...

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Convergent evolution of antlions and wormlions: similarities and differences in the behavioural ecology of unrelated trap-building predators

Miler

Scharf

2022

Behav Ecol Sociobiol

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Seleção de microhabitat por larvas de formiga-leão Myrmeleon brasiliensis (Návas) (Neuroptera: Myrmeleontidae), em uma Reserva Florestal, Aquidauana, MS

Cited by 20 publications

References 9 publications

Effect of asymmetric competition on distance among <i>Myrmeleon brasiliensis</i> (Návas, 1914) (Neuroptera: Myrmeleontidae) larvae

Effect of asymmetric competition on distance among <i>Myrmeleon brasiliensis</i> (Návas, 1914) (Neuroptera: Myrmeleontidae) larvae

Effect of energetic cost to maintain the trap for Myrmeleon brasiliensis (Neuroptera, Myrmeleontidae) in its development and adult size

Convergent evolution of antlions and wormlions: similarities and differences in the behavioural ecology of unrelated trap-building predators

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