Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic
The family Calyptraeidae is widely distributed around the world and shows several types of development all with physical care. Adults and broods of Trochita pileus from sub-Antarctic waters were collected during two cruises off Tierra del Fuego and Burdwood Bank at depths between 39 and 298 m. A tot...
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ftconicet:oai:ri.conicet.gov.ar:11336/93194 2023-10-09T21:47:14+02:00 Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic Teso, Silvia Valeria Penchaszadeh, Pablo Enrique application/pdf http://hdl.handle.net/11336/93194 eng eng Springer info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2412-4 http://hdl.handle.net/11336/93194 Teso, Silvia Valeria; Penchaszadeh, Pablo Enrique; Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic; Springer; Polar Biology; 42; 10-2018; 171-178 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Development Calyptraeidae Brooding Nurse eggs Adelphophagy MPA Namuncurá/Burdwood Bank https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-018-2412-4 2023-09-24T19:04:21Z The family Calyptraeidae is widely distributed around the world and shows several types of development all with physical care. Adults and broods of Trochita pileus from sub-Antarctic waters were collected during two cruises off Tierra del Fuego and Burdwood Bank at depths between 39 and 298 m. A total of 43 brooding females and 314 egg capsules of T. pileus were collected. Shell diameter of brooding females ranged from 12.6 to 28.8 mm. The egg capsules were flattened triangular sacs with rounded vertices and lateral margins longer than the distal margin. The number of egg capsules per brood increased significantly with increasing shell diameter of brooding females from 1 to 15 and a mean number of 7.9 ± 2.8. T. pileus has direct development from embryos which start consuming nurse eggs (oophagy) and then continue eating developing embryos (adelphophagy). The 80.7% of the initial eggs of T. pileus did not initiate development. From about 1000 initial uncleaved eggs per egg capsule (diameter around 250 µm), only 8 complete their development hatching as crawling juveniles. The observation of the post-gastrula stage of T. pileus swallowing all nurse eggs and latter also other embryos in the same stage of development is the first case of oophagy and adelphophagy in the genus Trochita. No late intracapsular cannibalism has been observed. To our knowledge, there are no records of Antarctic Calyptraeidae and this would be the development of one of the southernmost species described. Fil: Teso, Silvia Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Penchaszadeh, Pablo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Article in Journal/Newspaper Antarc* Antarctic Polar Biology Tierra del Fuego CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Argentino Argentina Pablo ENVELOPE(-63.717,-63.717,-64.283,-64.283) Silvia ENVELOPE(-57.900,-57.900,-63.300,-63.300) Burdwood Bank ENVELOPE(-59.000,-59.000,-54.250,-54.250) Polar Biology 42 1 171 178 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Development Calyptraeidae Brooding Nurse eggs Adelphophagy MPA Namuncurá/Burdwood Bank https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
Development Calyptraeidae Brooding Nurse eggs Adelphophagy MPA Namuncurá/Burdwood Bank https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Teso, Silvia Valeria Penchaszadeh, Pablo Enrique Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic |
topic_facet |
Development Calyptraeidae Brooding Nurse eggs Adelphophagy MPA Namuncurá/Burdwood Bank https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
The family Calyptraeidae is widely distributed around the world and shows several types of development all with physical care. Adults and broods of Trochita pileus from sub-Antarctic waters were collected during two cruises off Tierra del Fuego and Burdwood Bank at depths between 39 and 298 m. A total of 43 brooding females and 314 egg capsules of T. pileus were collected. Shell diameter of brooding females ranged from 12.6 to 28.8 mm. The egg capsules were flattened triangular sacs with rounded vertices and lateral margins longer than the distal margin. The number of egg capsules per brood increased significantly with increasing shell diameter of brooding females from 1 to 15 and a mean number of 7.9 ± 2.8. T. pileus has direct development from embryos which start consuming nurse eggs (oophagy) and then continue eating developing embryos (adelphophagy). The 80.7% of the initial eggs of T. pileus did not initiate development. From about 1000 initial uncleaved eggs per egg capsule (diameter around 250 µm), only 8 complete their development hatching as crawling juveniles. The observation of the post-gastrula stage of T. pileus swallowing all nurse eggs and latter also other embryos in the same stage of development is the first case of oophagy and adelphophagy in the genus Trochita. No late intracapsular cannibalism has been observed. To our knowledge, there are no records of Antarctic Calyptraeidae and this would be the development of one of the southernmost species described. Fil: Teso, Silvia Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Penchaszadeh, Pablo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina |
format |
Article in Journal/Newspaper |
author |
Teso, Silvia Valeria Penchaszadeh, Pablo Enrique |
author_facet |
Teso, Silvia Valeria Penchaszadeh, Pablo Enrique |
author_sort |
Teso, Silvia Valeria |
title |
Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic |
title_short |
Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic |
title_full |
Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic |
title_fullStr |
Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic |
title_full_unstemmed |
Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic |
title_sort |
development of the gastropod trochita pileus (calyptraeidae) in the sub-antarctic southwestern atlantic |
publisher |
Springer |
url |
http://hdl.handle.net/11336/93194 |
long_lat |
ENVELOPE(-63.717,-63.717,-64.283,-64.283) ENVELOPE(-57.900,-57.900,-63.300,-63.300) ENVELOPE(-59.000,-59.000,-54.250,-54.250) |
geographic |
Antarctic Argentino Argentina Pablo Silvia Burdwood Bank |
geographic_facet |
Antarctic Argentino Argentina Pablo Silvia Burdwood Bank |
genre |
Antarc* Antarctic Polar Biology Tierra del Fuego |
genre_facet |
Antarc* Antarctic Polar Biology Tierra del Fuego |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2412-4 http://hdl.handle.net/11336/93194 Teso, Silvia Valeria; Penchaszadeh, Pablo Enrique; Development of the gastropod Trochita pileus (Calyptraeidae) in the sub-Antarctic Southwestern Atlantic; Springer; Polar Biology; 42; 10-2018; 171-178 0722-4060 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-018-2412-4 |
container_title |
Polar Biology |
container_volume |
42 |
container_issue |
1 |
container_start_page |
171 |
op_container_end_page |
178 |
_version_ |
1779310200990203904 |