Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)

ABSTRACT During two sampling trips carried out over the continental platform of Gulf of Tehuantepec, a total of 101 Lolliguncula panamensis Berry, 1911 were caught. Thirty mature specimens (19 females and 11 males) were found to have unusually short arms. Dorsal mantle length, arm's length, and...

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Autores principales:	León-Guzmán,Sairi Saraí, Alejo-Plata,María del Carmen
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2019
Materias:	Lolliguncula panamensis Loliginidae arm regeneration autotomy Gulf of Tehuantepec
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200356
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id	oai:scielo:S0718-560X2019000200356
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spelling	oai:scielo:S0718-560X20190002003562019-06-04Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)León-Guzmán,Sairi SaraíAlejo-Plata,María del Carmen Lolliguncula panamensis Loliginidae arm regeneration autotomy Gulf of Tehuantepec ABSTRACT During two sampling trips carried out over the continental platform of Gulf of Tehuantepec, a total of 101 Lolliguncula panamensis Berry, 1911 were caught. Thirty mature specimens (19 females and 11 males) were found to have unusually short arms. Dorsal mantle length, arm's length, and body weight were measured from the fresh specimens. Evidence of regeneration was observed at different points along arms; these may have been the result of partial autonomies. In the injured arms, the surface of the arm's tip was wholly covered with skin. Fracture planes were found in our histological sections; the autotomized arms exhibited constricted muscle fibers in the longitudinal sections indicative of wound closing. The arms of the specimens observed were very similar to the regenerating arms of other squids. This study represents the first to report arms regeneration and hectocotylus in this squid wild-caught. These results suggest that Lolliguncula panamensis exhibit partial autotomy, and the ability to regenerate the arms. Additionally, each of the eight arms can do so, presumably during defensive interaction or mating.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.2 20192019-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200356en10.3856/vol47-issue2-fulltext-16
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Lolliguncula panamensis Loliginidae arm regeneration autotomy Gulf of Tehuantepec
spellingShingle	Lolliguncula panamensis Loliginidae arm regeneration autotomy Gulf of Tehuantepec León-Guzmán,Sairi Saraí Alejo-Plata,María del Carmen Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)
description	ABSTRACT During two sampling trips carried out over the continental platform of Gulf of Tehuantepec, a total of 101 Lolliguncula panamensis Berry, 1911 were caught. Thirty mature specimens (19 females and 11 males) were found to have unusually short arms. Dorsal mantle length, arm's length, and body weight were measured from the fresh specimens. Evidence of regeneration was observed at different points along arms; these may have been the result of partial autonomies. In the injured arms, the surface of the arm's tip was wholly covered with skin. Fracture planes were found in our histological sections; the autotomized arms exhibited constricted muscle fibers in the longitudinal sections indicative of wound closing. The arms of the specimens observed were very similar to the regenerating arms of other squids. This study represents the first to report arms regeneration and hectocotylus in this squid wild-caught. These results suggest that Lolliguncula panamensis exhibit partial autotomy, and the ability to regenerate the arms. Additionally, each of the eight arms can do so, presumably during defensive interaction or mating.
author	León-Guzmán,Sairi Saraí Alejo-Plata,María del Carmen
author_facet	León-Guzmán,Sairi Saraí Alejo-Plata,María del Carmen
author_sort	León-Guzmán,Sairi Saraí
title	Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)
title_short	Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)
title_full	Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)
title_fullStr	Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)
title_full_unstemmed	Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)
title_sort	arms regeneration in the squid lolliguncula panamensis (mollusca: cephalopoda)
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200356
work_keys_str_mv	AT leonguzmansairisarai armsregenerationinthesquidlolligunculapanamensismolluscacephalopoda AT alejoplatamariadelcarmen armsregenerationinthesquidlolligunculapanamensismolluscacephalopoda
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Arms regeneration in the squid Lolliguncula panamensis (Mollusca: Cephalopoda)

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