l'A Activité De l'A Appareli Reproducteur Mâle Pendant La Vie Imaginale Chez Deux Espèces De Canthon (Coleoptera: Scarabaeidae)

M, Imelda Martínez

doi:10.21829/azm.1992.49491682

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…Each testicle is connected to its respective vas deferens; they converge in the ejaculatory bulb that is discharged into the internal pouch within the aedeagus. Two accessory glands, each ending in a glandular reservoir, are connected to a glandular duct and secretions are presumed to combine with the seminal fluid, forming the spermatophore (Cruz Rosales & Martínez, 1992;Martínez et al, 2019).…”

Section: Reproduc Tive System and Developmentmentioning

confidence: 99%

“…For example, sperm competition and cryptic female choice based on male age or quality could contribute to an increase in paternity in large‐horned males. Evidence in this line indicates that males gaining more weight after emergence and taking longer to develop will have larger testes and accessory glands, with potential benefits during sperm competition (Martínez & Cruz Rosales, 1992; Reaney & Knell, 2015). Further studies manipulating number and quality of male partners, combined with paternity analyses, might shed light on the relevance of post‐copulatory sexual selection in E. intermedius (Table 1).…”

Section: Sexual Selectionmentioning

confidence: 99%

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Physiology, ecology, and evolution of a successful colonizer: the horned dung beetle, Euoniticellus intermedius

González‐Tokman,

Esquivel‐Román,

Martínez M

2024

Entomologia Exp Applicata

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Insects are intentionally introduced to various regions out of their native ranges to perform fundamental functions, such as pest control, and some keep dispersing from introduction sites to become cosmopolitan and even invasive. The African horned dung beetle, Euoniticellus intermedius (Reiche) (Coleoptera: Scarabaeidae), has been intentionally introduced on multiple continents to bury cattle dung and control livestock pests, but has naturally dispersed and became very abundant at various latitudes and elevations out of its native and original introduction ranges. This beetle has been considered invasive, but there is no direct evidence of its effects on displacing native species. As it is highly fecund, E. intermedius has been an important model in experimental studies performed in nature and in the laboratory in multiple fields. In evolutionary biology, it serves as a model for sexual selection, given the sexual dimorphism characterized by the presence of a horn in males which is correlated with individual condition and strength, and which is absent in females. In ecotoxicology, it has been studied regarding physiological mechanisms of responses to contaminants, population declines, and evolutionary responses to challenging toxic conditions. Given its importance in burying dung in cattle pastures, experiments have also determined environmental conditions that limit this ecological function. Despite being unique in its tolerance to a wide variety of stressors and environments, this species is sensitive to current conditions of global change, including warming and pollution. We identify the most promising questions to be solved in physiology, ecology, and evolution, for which E. intermedius would be an ideal study system.

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Section: Reproduc Tive System and Developmentmentioning

confidence: 99%

Section: Sexual Selectionmentioning

confidence: 99%

Physiology, ecology, and evolution of a successful colonizer: the horned dung beetle, Euoniticellus intermedius

González‐Tokman,

Esquivel‐Román,

Martínez M

2024

Entomologia Exp Applicata

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“…Sexual recognition in dung beetles occurs through cuticular hydrocarbons (Ortiz-Domínguez et al, 2006). These compounds act as short-distance contact pheromones and vary according to several factors, such as the changes at the gonad level in females and males during reproduction (Halffter and López, 1977;Huerta et al, 1981;Martínez and Cruz, 1990;Martínez, 1992b;Martínez and Huerta, 1997;López-Guerrero and Halffter, 2000;Howard and Blomquist, 2005;Huerta and Martínez, 2008;Ginzel, 2010;Favila et al, 2012).…”

Section: Sperm Competition and Female Selectionmentioning

confidence: 99%

The reproductive behavior of Neotropical dung beetles

Huerta

Cruz-Rosales²,

González-Vainer³

et al. 2023

Front. Ecol. Evol.

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Dung beetles display complex reproductive behaviors involving sexual findings, sexual recognition, fighting for mates and food used for nesting, sperm competition, and parental care. Over the past 40 years, significant advances have been made regarding the knowledge of various aspects of the sexual and nesting behavior of Neotropical dung beetles. However, human activities modify the natural habitats of dung beetles at an alarming rate, affecting food availability and altering the ecological functions performed by the species in their different habitats. A deeper understanding of the reproductive behavior of dung beetles may contribute significantly in understanding the evolutionary diversification of these insects and their response to environmental changes. The present study reviews and analyzes studies regarding the sexual and reproductive behavior of Neotropical dung beetle species under field and laboratory conditions. We gathered 132 studies and 146 species; 42% of the available data were based on field observations, 23% on laboratory observations, 30% under both field and laboratory conditions, and 5% unspecified. Our review detected significant knowledge, geographic, and habitat gaps regarding the reproductive behavior of Neotropical dung beetles. Based on our findings, we propose future research goals and alternative methods to measure the behavioral responses of Neotropical dung beetles to the impacts of human activities.

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Nuevos datos sobre la distribución y la biología reproductiva de Canthon imitator Brown 1946 (Coleoptera: Scarabaeidae: Scarabaeinae)

Martínez

Escobar

Almendarez

et al. 2019

AZM

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Canthon imitator Brown 1946 se registra por primera vez en el Municipio de Papantla, Veracruz, México. Este es el registro más meridional que se tiene de esta especie. Es un escarabajo estercolero rodador, diurno, abundante en el sitio de colecta de mayo a julio. Las hembras tienen sólo el ovario izquierdo con una ovariola. Ovipositan un solo huevo cada 4 a 5 días en una bola nido piriforme. Los machos tienen dos testículos, cada uno con seis folículos testiculares esféricos. El desarrollo hasta imago dura aproximadamente 30 días como en otras especies de Canthon estudiadas.

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l'A Activité De l'A Appareli Reproducteur Mâle Pendant La Vie Imaginale Chez Deux Espèces De Canthon (Coleoptera: Scarabaeidae)

Cited by 4 publications

References 4 publications

Physiology, ecology, and evolution of a successful colonizer: the horned dung beetle, Euoniticellus intermedius

Physiology, ecology, and evolution of a successful colonizer: the horned dung beetle, Euoniticellus intermedius

The reproductive behavior of Neotropical dung beetles

Nuevos datos sobre la distribución y la biología reproductiva de Canthon imitator Brown 1946 (Coleoptera: Scarabaeidae: Scarabaeinae)

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