The effect of temperature and humidity on the developmental period and mortality of Typhaea stercorea (L.) (Coleoptera: Mycetophagidae)

Jacob, T.A.

doi:10.1016/0022-474x(88)90022-7

Cited by 22 publications

(6 citation statements)

References 2 publications

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“…The mean duration of the pupal period of L. tetraspilotus was similar to that of the other species: Triphyllus minor with 7.5 days and Typhaea stercorea with 5.0 days (WALLAGE & ROSE, 1982;JACOB, 1988).…”

Section: Discussionsupporting

confidence: 67%

“…The authors observed that the last instar larvae also consume large amounts of fungus, and when this resource becomes sparse, the larvae show cannibalistic tendencies. The developmental period of Typhaea stercorea larvae showed a longer average duration compared to the others, i.e., about 83.5 days (JACOB, 1988).…”

Section: Discussionmentioning

confidence: 84%

“…Considering the egg laying and incubation period, in comparison to other species of Mycetophagidae, for which there is information about the life cycle, the incubation period of L. tetraspilotus is the shortest one. Triphyllus minor (Lea, 1895) has an average incubation period of 7.5 days (WALLAGE & ROSE, 1982), while for Typhaea stercorea the average is 4.9 days, at similar temperature and humidity conditions (JACOB, 1988).…”

Section: Discussionmentioning

confidence: 99%

“…The terminology used was from LESCHEN (1990), LAWRENCE (1987, PONOMARENKO (1972) ROSE (1982) and JACOB (1988).…”

Section: Methodsmentioning

confidence: 99%

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The first record of Litargus tetraspilotus (Coleoptera, Mycetophagidae) in Brazil, with biological notes and complementary description of the species

Milléo

Castro

Ribeiro-Costa

et al. 2011

Iheringia, Sér. Zool.

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ABSTRACT. Litargus tetraspilotus LeConte, 1856 was collected feeding on Oidium sp. (Fungi, Ascomycota, Erysiphaceae) associated with fruit trees. This is the first time L. tetraspilotus is recorded in Brazil, totaling three species of Mycetophagidae for this country. This study aims to provide a complementary description of this species based on new characters and to present information on its life cycle under laboratory conditions and fluctuation in population in the field. During the period of inventories between July 2004 and August 2006, about every fifteen days, a total of 565 specimens of L. tetraspilotus were collected, with the highest abundance found on citrus plants, with values differing significantly between the two years. The population levels differed between the seasons; spring had the greatest abundance and autumn the least. There was a significant positive correlation of L. tetraspilotus abundance with rainfall and relative humidity. Mycetophagidae, as well as other mycophagous families of Brazilian coleopterans, are barely studied, warranting further future studies of their bioecology and systematics.KEYWORDS. Tenebrionoidea, Mycetophagini, fruit trees, mycophagous, population fluctuation. RESUMO. Primeiro registro deLitargus tetraspilotus (Coleoptera, Mycetophagidae) para o Brasil, com notas biológicas e descrição complementar da espécie. Litargus tetraspilotus LeConte, 1856 foi coletado alimentando-se de Oidium sp. (Fungi, Ascomycota, Erysiphaceae) associado a árvores frutíferas. Litargus tetraspilotus é registrado pela primeira vez no Brasil, totalizando três espécies de Mycetophagidae no país. Esse trabalho teve como objetivos fornecer uma descrição complementar da espécie, com base em novos caracteres e apresentar informações sobre seu ciclo de vida em condições de laboratório e dados de flutuação populacional no campo. Durante o período de inventariamento de julho/2004 a agosto/2006, a cada quinze dias, foram coletados 565 exemplares de L. tetraspilotus, sendo os maiores valores de abundância encontrados nas plantas cítricas, com variação significativa entre os dois anos de coleta. Os níveis populacionais diferiram entre as estações, sendo a primavera o período de maior abundância e o outono, o de menor. Houve correlação positiva significativa com a precipitação e a umidade relativa do ar. Mycetophagidae, assim como outras famílias de coleópteros micófagos brasileiros, são muito pouco estudadas, sendo necessário pesquisas futuras sobre sua bioecologia e sistemática. PALAVRAS-CHAVE.Tenebrionoidea, Mycetophagini, árvores frutíferas, micófago, flutuação populacional.

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Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

“…The terminology used was from LESCHEN (1990), LAWRENCE (1987, PONOMARENKO (1972) ROSE (1982) and JACOB (1988).…”

Section: Methodsmentioning

confidence: 99%

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The first record of Litargus tetraspilotus (Coleoptera, Mycetophagidae) in Brazil, with biological notes and complementary description of the species

Milléo

Castro

Ribeiro-Costa

et al. 2011

Iheringia, Sér. Zool.

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“…Jacob (1988) investigated the development of T. stercorea over a range of constant temperatures and humidities to determine its potential as a pest. Tigar and Pinniger (1996) determined its susceptibility to pirimiphos-methyl and malathion, and Weinzierl and Porter (1990) examined the resistance of a strain from Illinois to the same chemicals.…”

mentioning

confidence: 99%

Phenology and Spatial Pattern ofTyphaea stercorea(Coleoptera: Mycetophagidae) Infesting Stored Grain: Estimation by Pitfall Trapping

et al. 2000

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The hairy fungus beetle, Typhaea stercorea (L.), occurs frequently in stored grain, often in large numbers. Populations infesting stored barley in Minnesota, corn in South Carolina, and wheat in Florida were sampled by means of grain probe traps. Spatial distribution of the species was examined by contour analysis of trap catch. In South Carolina, corn was sampled at 2 locations over 2 storage seasons, and temperature, moisture content, and malathion residues were measured. These data were used to examine phenology as well as spatial distribution, and showed peak trap catch shortly after harvest in the fall, and in the spring. This pattern followed seasonal changes in grain temperature, but there was no apparent relationship of trap catch to either grain moisture content or malathion residue. The populations of T. stercorea were not distributed randomly, but were largely concentrated in 1 or very few aggregations associated with the "spoutline," a region high in foreign material and broken grain that forms near the center of a bin as it is loaded. However, the spatial patterns were dynamic, even on a very small time scale (week to week). Numbers of insects in aggregations rose and fell, the areas involved expanded and contracted, the centers shifted, and secondary centers appeared and disappeared. These changes were apparently in response to changing patterns of grain temperature and moisture content. Secondary centers of aggregation often formed in warmer grain along bin walls.

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Diversity and integration of life-cycle controls in insects

Danks¹

1994

Insect Life-Cycle Polymorphism

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The effect of temperature and humidity on the developmental period and mortality of Typhaea stercorea (L.) (Coleoptera: Mycetophagidae)

Cited by 22 publications

References 2 publications

The first record of Litargus tetraspilotus (Coleoptera, Mycetophagidae) in Brazil, with biological notes and complementary description of the species

The first record of Litargus tetraspilotus (Coleoptera, Mycetophagidae) in Brazil, with biological notes and complementary description of the species

Phenology and Spatial Pattern ofTyphaea stercorea(Coleoptera: Mycetophagidae) Infesting Stored Grain: Estimation by Pitfall Trapping

Diversity and integration of life-cycle controls in insects

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