Sex Control by Bees: A Voluntary Act of Egg Fertilization during Oviposition

Gerber, Henry S.; Klostermeyer, E. C.

doi:10.1126/science.167.3914.82

Cited by 89 publications

(34 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Females of the solitary bee, Andrena erythronii lay approximately 8 diploid eggs in the reproductive lifetime (Michener & Rettenmeyer, 1956), while Megachile rotundata lay approximately 20 diploid eggs (Gerber & Klostermeyer, 1970). Primitively eusocial Lasioglossum laevissimum lay approximately 75 diploid eggs (Packer, 1992) and L. marginatum lay over 2000 eggs (Plateaux-Quénu, 1960).…”

Section: Discussionmentioning

confidence: 99%

A comparative study of the ovaries in some Brazilian bees (Hymenoptera; Apoidea)

Martins

Serrão

2004

Pap. Avulsos Zool. (São Paulo)

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

A comparative study of the ovaries in some Brazilian bees (Hymenoptera; Apoidea)

Martins

Serrão

2004

Pap. Avulsos Zool. (São Paulo)

View full text Add to dashboard Cite

show abstract

“…A spermathecal pump, also known as sphincter, is located at the site of attachment of the spermathecal duct to the reservoir. The spermathecal pump of bees and ants is formed by several muscular fibres arranged in different orientations (Martins & Serrão 2002, Gobin et al 2006) and functions to prevent gametes from escaping from the reservoir and to control their release during egg fertilization by contracting and relaxing, respectively (Gerber & Klostermeyer 1970).…”

mentioning

confidence: 99%

Morphological and morphometrical assessment of spermathecae of Aedes aegypti females

Pascini

Ramalho-Ortigão

Martins

2012

Mem. Inst. Oswaldo Cruz

View full text Add to dashboard Cite

“…Em Hymenoptera a fêmea pode controlar o sexo de sua prole no momento da oviposição (Flanders 1965;Gerber & Klostermeyer 1970) e essa decisão é feita normalmente de acordo com estímulos ambientais (Craig & Mopper 1993;West & Sheldon 2002;Peruquetti & Del Lama 2003). Com isto em mente, foi verificado o efeito da pluviosidade sobre a decisão da fêmea em produzir um ou outro sexo, visto que o regime de chuvas poderia influenciar o desenvolvimento da planta hospedeira, alterando a qualidade ou a quantidade de recursos que estariam disponíveis para as larvas, o que poderia influenciar a decisão da fêmea em produzir machos ou fêmeas (Larsson et al 2000).…”

Section: Methodsunclassified

Biologia, comportamento social e alocação sexual de Digelasinus diversipes (Kirby, 1882) (Hymenoptera, Argidae)

Boraschi¹,

Peruquetti²,

Lama³

2005

Rev. Bras. entomol.

View full text Add to dashboard Cite

ABSTRACT. Biology, social behavior and sex-allocation of Digelasinus diversipes (Kirby, 1882) (Hymenoptera, Argidae). The results of a two-year study of the Neotropical sawfly Digelasinus diversipes are presented. This species is univoltine and common in Estação Ecológica Jataí, a nature reserve of Cerrado vegetation in São Paulo State, Brazil. The larvae feed gregariously on Eugenia glazioviana (Kiaersk.) D. Legrand (Myrtaceae) from November through April. Fusions of different feeding groups were frequent. After the feeding period, larvae congregate and communally construct a cocoon mass (105 cocoons ± 60SD; n = 25) attached to the trunk of the host plant, entering in diapause as prepupae until the beginning of the rainy season in October. The population peak was in December when 62% (n = 2,967) of adult emergence occurred. In experimental conditions, emergence was observed from 6:30 a.m. until 15:00 p.m., but 73.5% (n = 223) of the adults appeared between 9:00 a.m. and 12:00 h. Sex sequence was not observed during emergence but, in a single cocoon mass, males may appear 20 to 40 days earlier than females. After emergence, males may either (1) disperse (early and late in the emergence period; October and November, January and February, respectively) or (2) remain on or near the cocoon mass and mate with newly emerged females (during the emergence peak in December). Copulation lasts 4.28 minutes (±3.4SD; n = 28), and during the day, males may mate with different females (1-8; n = 5); however, females mate only once. Newly emerged females have a mean of 76 mature eggs (± 21SD; n = 19) and oviposited all of them underneath of a single leaf of the host plant. Egg guarding by females lasted only 2 (n = 12) of the 30 days of egg incubation. The female's behavioral repertoire against potential enemies was shorter than that reported for some other sawfly species. Apparently, the female induces necrosis of the leaf tissue that covers the eggs, which forms a hard shelter for the eggs during incubation. Both sexes of D. diversipes do not feed as adults (controlled condition) and have a short life span (5.2 days ± 1.7SD; minimum 1, maximum 11; n = 179). The mean sex ratio was 2.83 (± 0.014SE) in favor of females. Main mortality factors were development defects, lack of food due to intense herbivory, and attack of parasitoids. Parasitoids reared, Lymeon dieloceri (Costa Lima, 1937) (Ichneumonidae), Conura (Spilochalcis) sp. (Chalcididae) and Perilampus sp. (Perilampidae).KEYWORDS. Gregarious feeding; maternal care; Neotropical sawfly; sex ratio; subsocial insect. RESUMO. Biologia, comportamento social e alocação sexual de Digelasinus diversipes (Kirby, 1882) (Hymenoptera, Argidae). São apresentados os resultados de um estudo de dois anos sobre o Symphyta neotropical Digelasinus diversipes. Esta espécie é univoltina e comum na Estação Ecológica Jataí, uma reserva de Cerrado no Estado de São Paulo. As larvas alimentam-se gregariamente em Eugenia glazioviana (Myrtaceae) de novembro a abril. Associações entre grupos de alimenta...

show abstract

Sex Control by Bees: A Voluntary Act of Egg Fertilization during Oviposition

Cited by 89 publications

References 2 publications

A comparative study of the ovaries in some Brazilian bees (Hymenoptera; Apoidea)

A comparative study of the ovaries in some Brazilian bees (Hymenoptera; Apoidea)

Morphological and morphometrical assessment of spermathecae of Aedes aegypti females

Biologia, comportamento social e alocação sexual de Digelasinus diversipes (Kirby, 1882) (Hymenoptera, Argidae)

Contact Info

Product

Resources

About