Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina
ZBSTRACT: Psettdecliirius tnagellanicus is one of the most abundant echinoids in Argentinean waters, r :cursing at depths from intertidal to over 150 m. It is distributed along the South American coast, from off Rio i- la Plata in the Atlantic Ocean, to Puerto Montt, in the Pacific Ocean. This speci...
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Taylor & Francis Group; London
2004
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ftunswworks:oai:unsworks.library.unsw.edu.au:1959.4/unsworks_50403 2024-05-19T07:32:13+00:00 Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina Bigatti, G Marzinelli, E Cledon, M Penchaszadeh, PE Heinzeller, Thomas Nebelsick, James H 2004-01-01 application/pdf http://hdl.handle.net/1959.4/unsworks_50403 https://unsworks.unsw.edu.au/bitstreams/a0dd52ad-1dfd-469b-9674-519ac2d465b9/download unknown Taylor & Francis Group; London http://hdl.handle.net/1959.4/unsworks_50403 https://unsworks.unsw.edu.au/bitstreams/a0dd52ad-1dfd-469b-9674-519ac2d465b9/download open access https://purl.org/coar/access_right/c_abf2 CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ free_to_read urn:ISBN:04 1536 481 7 Echinoderms: Manchen, 11-14 anzsrc-for: 060205 Marine and Estuarine Ecology (incl. Marine Ichthyology) book part http://purl.org/coar/resource_type/c_3248 2004 ftunswworks 2024-04-24T01:04:00Z ZBSTRACT: Psettdecliirius tnagellanicus is one of the most abundant echinoids in Argentinean waters, r :cursing at depths from intertidal to over 150 m. It is distributed along the South American coast, from off Rio i- la Plata in the Atlantic Ocean, to Puerto Montt, in the Pacific Ocean. This species is also found in islands of 7:: Antarctic Sea. It occupies a variety of habitats such as tide pools, mixed gravel and sand bottoms, '~crocystisb lades and Mytilus beds. Monthly samples were examined from September 2000 to March 2003. i?ecimens were collected by scuba diving from depths of 6-10 m in Golfo Nuevo, Puerto Mad~ynG. onad index - 2s analyzed monthly. There are two reproductive peaks and partial spawning events throughout the year. Major ;-wnings were recorded in late winter (June-August) corresponding to the minimum winter water temperature .-9°C) and an increase in day length, and in summer (January- February), corresponding to the highest water s-aperature value (17-18OC) and maximum day lengths. These observations were corroborated by analysis -m'i croscopic changes in gonads and in the distribution of oocyte sizes in the ovary. Males recover faster -Y females, being able to spawn during ahnost the whole year. Resorption after spawning was observed in : -3 sexes. Oocytes bigger than 105 km have a jelly coat of 10-12 p,m which could protect them after released -I ::?e water. Book Part Antarc* Antarctic UNSW Sydney (The University of New South Wales): UNSWorks |
institution |
Open Polar |
collection |
UNSW Sydney (The University of New South Wales): UNSWorks |
op_collection_id |
ftunswworks |
language |
unknown |
topic |
anzsrc-for: 060205 Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
anzsrc-for: 060205 Marine and Estuarine Ecology (incl. Marine Ichthyology) Bigatti, G Marzinelli, E Cledon, M Penchaszadeh, PE Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina |
topic_facet |
anzsrc-for: 060205 Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
ZBSTRACT: Psettdecliirius tnagellanicus is one of the most abundant echinoids in Argentinean waters, r :cursing at depths from intertidal to over 150 m. It is distributed along the South American coast, from off Rio i- la Plata in the Atlantic Ocean, to Puerto Montt, in the Pacific Ocean. This species is also found in islands of 7:: Antarctic Sea. It occupies a variety of habitats such as tide pools, mixed gravel and sand bottoms, '~crocystisb lades and Mytilus beds. Monthly samples were examined from September 2000 to March 2003. i?ecimens were collected by scuba diving from depths of 6-10 m in Golfo Nuevo, Puerto Mad~ynG. onad index - 2s analyzed monthly. There are two reproductive peaks and partial spawning events throughout the year. Major ;-wnings were recorded in late winter (June-August) corresponding to the minimum winter water temperature .-9°C) and an increase in day length, and in summer (January- February), corresponding to the highest water s-aperature value (17-18OC) and maximum day lengths. These observations were corroborated by analysis -m'i croscopic changes in gonads and in the distribution of oocyte sizes in the ovary. Males recover faster -Y females, being able to spawn during ahnost the whole year. Resorption after spawning was observed in : -3 sexes. Oocytes bigger than 105 km have a jelly coat of 10-12 p,m which could protect them after released -I ::?e water. |
author2 |
Heinzeller, Thomas Nebelsick, James H |
format |
Book Part |
author |
Bigatti, G Marzinelli, E Cledon, M Penchaszadeh, PE |
author_facet |
Bigatti, G Marzinelli, E Cledon, M Penchaszadeh, PE |
author_sort |
Bigatti, G |
title |
Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina |
title_short |
Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina |
title_full |
Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina |
title_fullStr |
Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina |
title_full_unstemmed |
Gonadic cycle of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) from Patagonia, Argentina |
title_sort |
gonadic cycle of pseudechinus magellanicus (philippi, 1857) (echinoidea: temnopleuridae) from patagonia, argentina |
publisher |
Taylor & Francis Group; London |
publishDate |
2004 |
url |
http://hdl.handle.net/1959.4/unsworks_50403 https://unsworks.unsw.edu.au/bitstreams/a0dd52ad-1dfd-469b-9674-519ac2d465b9/download |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
urn:ISBN:04 1536 481 7 Echinoderms: Manchen, 11-14 |
op_relation |
http://hdl.handle.net/1959.4/unsworks_50403 https://unsworks.unsw.edu.au/bitstreams/a0dd52ad-1dfd-469b-9674-519ac2d465b9/download |
op_rights |
open access https://purl.org/coar/access_right/c_abf2 CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ free_to_read |
_version_ |
1799470200409554944 |