Getting Under the Skin: Autonomous Implantation of Squid Spermatophores

Hoving, Henk-Jan T.; Laptikhovsky, Vladimir

doi:10.2307/25066599

Cited by 36 publications

(38 citation statements)

References 5 publications

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“…The muscular terminal organ may trigger the release of the spermatangia from the spermatophores, as has been hypothesized for other squid with a long terminal organ (13). Spermatangia in preserved P. adami specimens were found deeply implanted into the dorsal mantle tissue of the female, penetrating into the inner mantle epithelium.…”

mentioning

confidence: 71%

“…This is also observed in male Onykia ingens that were caught by trawl and released spermatophores while being handled onboard. The spermatangia of this deep-sea squid also implant deeply into the female tissue (13). The successful implantation of 15-20 spermatangia probably takes some time.…”

mentioning

confidence: 86%

“…Spermatangia in preserved P. adami specimens were found deeply implanted into the dorsal mantle tissue of the female, penetrating into the inner mantle epithelium. Deeply implanted spermatangia are found in many other deep-sea squids (1,(5)(6)(7)(8)(9)(10)(13)(14)(15) and may have evolved to secure spermatangia in squid species with an active lifestyle but lacking a seminal receptacle for the deposition of spermatangia (14). Although our evidence of the production of wounds by the male in the female is inconclusive, such wounds have been observed in Pholidoteuthis sp.…”

mentioning

confidence: 88%

“…The spermatophoric reaction is triggered by contact with seawater when the spermatophore is outside the male's reproductive system or by physical stimulation of the spermatophore during mating (12). Once the spermatangium is released from the spermatophore, it is able to autonomously attach to or implant into the female's body where it holds the sperm until fertilization of the eggs (13,14). The locations of spermatangia implantation are fixed for some species (e.g., the anterior mantle margin or the base of the ventral arms), but in others spermatangia seem to be randomly distributed over the female's body (15).…”

mentioning

confidence: 99%

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Mating Behavior of a Deep-Sea Squid Revealed by in situ Videography and the Study of Archived Specimens

Hoving

Vecchione

2012

The Biological Bulletin

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mentioning

confidence: 71%

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confidence: 86%

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confidence: 88%

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confidence: 99%

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Mating Behavior of a Deep-Sea Squid Revealed by in situ Videography and the Study of Archived Specimens

Hoving

Vecchione

2012

The Biological Bulletin

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“…The other type of attachment involves deep implantation of the spermatangia into the female's body, i.e., the spermatangia penetrate the integument, embedding themselves completely into the female tissue; this strategy is common to some oceanic and deep-sea species, like the giant squid Architeuthis (5), cranchiids (6), onychoteuthids (7), octopoteuthids (8), and some sepiolids (9), among others. Despite great advances provided by recent studies (6,9,10), the mechanics behind deep implantation remains unknown.…”

Section: Might As Well Get Deeper: Perforating Potential Of Loliginidmentioning

confidence: 99%

Estrutura e funcionamento dos espermatóforos de Doryteuthis plei (Mollusca: Cephalopoda) e reavaliação da reação espermatofórica dos cefalópodes

Marian¹

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Ao meu querido sobrinho, Guilherme."I believe that in approaching our subject with the sensibilities of statisticians and dissectionists, we distance ourselves increasingly from the marvelous and spell-binding planet of imagination whose gravity drew us to our studies in the first place. This is not to say that we should cease to establish facts and to verify our information, but merely to suggest that unless those facts can be imbued with the flash of poetic insight then they remain dull gems; semi-precious stones scarcely worth the collecting." "Until we transform our mere sightings into genuine visions; until our ear is mature enough to order a symphony from the shrill pandemonium of the aviary; until then we may have a hobby, but we shall not have a passion." "A scientific understanding of the beautifully synchronized and articulated motion of an owl's individual feathers during flight does not impede a poetic appreciation of the same phenomenon. Rather, the two enhance each other, a more lyrical eye lending the cold data a romance from which it has long been divorced."Alan Moore, Blood from the Shoulder of Pallas AGRADECIMENTOSGostaria de expressar meus sinceros agradecimentos a todos que, de alguma forma, contribuíram para a concretização desta Tese.Em primeiro lugar, ao Prof. Dr. Osmar Domaneschi (in memoriam), pela dedicação e seriedade com que orientou este trabalho, desde o projeto inicial até pouco antes de seu falecimento, em março de 2008. Conheci seu entusiasmo pela busca e transmissão do conhecimento durante as aulas teóricas e práticas de Zoologia dos Invertebrados, o que me motivou a iniciar meus estudos acadêmicos em seu laboratório. A confiança depositada em mim para iniciar uma nova frente de pesquisa, com cefalópodes, foi uma das maiores motivações que tive ao longo desses anos de academia. A presente Tese estaria certamente muito superior se ele tivesse tido a oportunidade de acompanhar completamente o desenvolvimento do trabalho. Morfologista funcional habilidoso e experiente, Prof. Osmar teria contribuído enormemente nas fases finais do trabalho. Acredito que seus ensinamentos em vida, entretanto, foram suficientes para que eu pudesse completar mais essa etapa a contento. Sua conduta moral impecável, seu intenso espírito de luta e incansável esforço foram igualmente importantes para o engrandecimento desta Tese, mas principalmente para minha formação acadêmica e pessoal.À Profa. Dra. Sônia Godoy Bueno Carvalho Lopes, pela coragem de assumir a orientação de um projeto de Doutorado em fase avançada. Agradeço a confiança, o respeito e a liberdade a mim concedida, fundamentais para concluir meu trabalho. Sua generosidade nunca será esquecida, principalmente por ter proporcionado distintas oportunidades que enriqueceram minha formação profissional e pessoal.À Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP -processo 04/13212-7), pela concessão de bolsa de Doutorado Direto e de auxílio financeiro (Reserva Técnica), indispensável para custeio das despesas relacionadas à pesquisa.À P...

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Spermatophoric reaction reappraised: Novel insights into the functioning of the loliginid spermatophore based on Doryteuthis plei (Mollusca: Cephalopoda)

Marian

2011

Journal of Morphology

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During copulation, spermatophores produced by male coleoid cephalopods undergo the spermatophoric reaction, a complex process of evagination that culminates in the attachment of the spermatangium (everted spermatophore containing the sperm mass) on the female's body. To better understand this complicated phenomenon, the present study investigated the functional morphology of the spermatophore of the squid Doryteuthis plei applying in vitro analysis of the reaction, as well as light and electron microscopy investigation of spermatangia obtained either in vitro, or naturally attached on females. Hitherto unnoticed functional features of the loliginid spermatophore require a reappraisal of some important processes involved in the spermatophoric reaction. The most striking findings concern the attachment mechanism, which is not carried out solely by cement adhesive material, as previously believed, but rather by an autonomous, complex process performed by multiple structures during the spermatophoric reaction. During evagination, the ejaculatory apparatus provides anchorage on the targeted tissue, presumably due to the minute stellate particles present in the exposed spiral filament. Consequently, the ejaculatory apparatus maintains the attachment of the tip of the evaginating spermatophore until the cement body is extruded. Subsequently, the cement body passes through a complex structural rearrangement, which leads to the injection of both its viscid contents and pointed oral region onto the targeted tissue. The inner membrane at the oral region of the cement body contains numerous stellate particles attached at its inner side; eversion of this membrane exposes these sharp structures, which presumably adhere to the tissue and augment attachment. Several naturally attached spermatangia were found with their bases implanted at the deposition sites, and the possible mechanisms of perforation are discussed based on present evidence. The function of the complex squid spermatophore and its spermatophoric reaction is revisited in light of these findings. J. Morphol. 2012. © 2011 Wiley Periodicals, Inc.

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Getting Under the Skin: Autonomous Implantation of Squid Spermatophores

Cited by 36 publications

References 5 publications

Mating Behavior of a Deep-Sea Squid Revealed by in situ Videography and the Study of Archived Specimens

Mating Behavior of a Deep-Sea Squid Revealed by in situ Videography and the Study of Archived Specimens

Estrutura e funcionamento dos espermatóforos de Doryteuthis plei (Mollusca: Cephalopoda) e reavaliação da reação espermatofórica dos cefalópodes

Spermatophoric reaction reappraised: Novel insights into the functioning of the loliginid spermatophore based on Doryteuthis plei (Mollusca: Cephalopoda)

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