Frequency of spermatophore production and regeneration in the males of Tityus (Atreus) magnimanus Pocock, 1897 (Scorpiones, Buthidae)

Ross, LK

doi:10.1590/s1678-91992009000100014

Cited by 4 publications

(3 citation statements)

References 2 publications

(1 reference statement)

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“…These findings suggest that this may be the amount of time required to produce new hemispermatophores. This timing is broadly consistent with times reported in other scorpion species, which ranged from a few hours (in Tityus magnimanus Pocock 1897 and Androctonus mauretanicus [ Pocock 1902]) to days ( Euscorpius tergestinus [ Koch 1837]) (Ross ; Stockmann & Ythier ). The gestation period in T. pusillus (2–3 months) was similar to that in other Tityus scorpions of similar size, such as Tityus bastosi Lourenço 1984 (3 months), Tityus columbianus ( Thorell 1876) (3 months), and Tityus mattogrossensis Borelli 1901 (3 months) (Rouaud et al.…”

Section: Discussionsupporting

confidence: 85%

“…The courtship and mating rituals in T. pusillus are very typical of scorpion species (Polis ; Carrera et al. ; Ross ; Chantall‐Rocha & Japyassú ). However, some differences were observed, such as sexual stings.…”

Section: Discussionmentioning

confidence: 99%

“…The most variable aspects are the duration of courtship, which can last from a few minutes to several days, and female receptivity to males, which is largely dependent on the female reproductive period (Tallarovic et al. ; Ross ; Sánchez‐Quirós et al. ; Chantall‐Rocha & Japyassú ; Olivero et al.…”

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confidence: 99%

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Sexual dimorphism and reproductive behavior in the Brazilian scorpion Tityus pusillus (Scorpiones, Buthidae)

Lira

Pordeus

Rego

et al. 2018

Invertebrate Biology

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We studied sexual dimorphism (SD) and reproductive behavior in the litter‐dwelling scorpion, Tityus pusillus. SD was determined by measuring seven body structure attributes (prosoma, mesosoma, and metasoma lengths, and pedipalp chelae and metasomal segment V lengths and widths) in 634 individuals (211 males and 423 females) from the Arachnological Collection of the Universidade Federal de Pernambuco. Reproductive behavior was observed in 55 couples during nocturnal activity observations conducted in the laboratory. In addition, we evaluated gestation time, hemispermatophore replacement, and sequential courtship. Individuals of T. pusillus exhibited typical reproductive behavior, with a short courtship time (averaging 10±5 min). Males only accepted new partners at least 48 h after first mating, suggesting that this period may be necessary for hemispermatophore production. Females did not accept new partners for 24–48 h after their first mating. The average gestation period was 85±12 d, ranging 60–100 d. Our results showed a more complex picture of SD than previously described for this species, including features characteristic of both sexual size dimorphism (SSD) and sexual body component dimorphism in scorpions. In general, considering the relatively large size of the prosoma and mesosoma in T. pusillus, it seems reasonable to conclude that female‐biased SSD exists in the species, and that male‐biased sexual body component dimorphism is evident in the metasoma and chelae.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

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Sexual dimorphism and reproductive behavior in the Brazilian scorpion Tityus pusillus (Scorpiones, Buthidae)

Lira

Pordeus

Rego

et al. 2018

Invertebrate Biology

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Life-history traits of the Brazilian litter-dwelling scorpion: post-embryonic development and reproductive behaviour inAnanteris mauryiLourenço, 1982 (Scorpiones: Buthidae)

Lira

Araújo

Dionisio-da-Silva

et al. 2021

Journal of Natural History

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Successive matings produce opposite patterns on ejaculate volume and spermatozoa number in an ancient arthropod model with indirect sperm transfer

et al. 2019

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The production of spermatophore and ejaculate is energetically expensive for males. High mating rates may accelerate sperm depletion and progressively decrease the size of the ejaculates. Sperm competition can shape spermatozoon numbers according to different signals and cues such as number of potential rivals or female mating status. Factors influencing patterns of sperm allocation have been neglected in terrestrial arthropods that transfer sperm indirectly using a complex sclerotized spermatophore deposited on the soil. We used the Neotropical scorpion Bothriurus bonariensis (C.L. Koch, 1842) to examine ejaculate volume, spermatozoon number, and spermatophore’s trunk length along three successive matings and their relationship with body size of males. Males mated and deposited a pre-insemination spermatophore every 10 days. Ejaculate volume and trunk length decreased, whereas spermatozoon number increased over matings. Male body size positively influenced ejaculate volume and trunk length interacted with mating event. High mating rates may decrease ejaculate volume. Sperm competition may produce increased spermatozoon number. Ejaculates are more energetically expensive than spermatozoa and larger males may better face the energetic requirements. Larger spermatophore trunks contain bigger ejaculate volume in the first two mating events, but this relationship disappears at the third mating event. Our discussion focuses on the factors responsible for the observed patterns.

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Frequency of spermatophore production and regeneration in the males of Tityus (Atreus) magnimanus Pocock, 1897 (Scorpiones, Buthidae)

Cited by 4 publications

References 2 publications

Sexual dimorphism and reproductive behavior in the Brazilian scorpion Tityus pusillus (Scorpiones, Buthidae)

Sexual dimorphism and reproductive behavior in the Brazilian scorpion Tityus pusillus (Scorpiones, Buthidae)

Life-history traits of the Brazilian litter-dwelling scorpion: post-embryonic development and reproductive behaviour inAnanteris mauryiLourenço, 1982 (Scorpiones: Buthidae)

Successive matings produce opposite patterns on ejaculate volume and spermatozoa number in an ancient arthropod model with indirect sperm transfer

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