Winter ground segregation between two neighboring breeding penguins
Abstract: Knowledge of the dispersion of seabirds during migration may provide information on predictable foraging areas, potential overlap with human activities and target conservation zones. The aim of this study was to analyze spatial distribution of Southern rockhoppers penguins -RP- (Eudyptes c...
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ftdatacite:10.48448/1yyj-ba92 2023-05-15T13:56:44+02:00 Winter ground segregation between two neighboring breeding penguins 3rd World Seabird Conference 2021 Barrionuevo, Melina 2021 https://dx.doi.org/10.48448/1yyj-ba92 https://underline.io/lecture/34684-winter-ground-segregation-between-two-neighboring-breeding-penguins unknown Underline Science Inc. Animal Science Ornithology Emerging Technologies MediaObject article Conference talk Audiovisual 2021 ftdatacite https://doi.org/10.48448/1yyj-ba92 2022-02-09T11:22:26Z Abstract: Knowledge of the dispersion of seabirds during migration may provide information on predictable foraging areas, potential overlap with human activities and target conservation zones. The aim of this study was to analyze spatial distribution of Southern rockhoppers penguins -RP- (Eudyptes chrysocome chrysocome) and Magellanic penguins -MP- (Spheniscus magellanicus) during migration. We used geolocators (MK3 & MK4) to study migration movements of 10 RP breeding at Isla Pingüino (47°54'S; 65°43'W) and 20 MP breeding at Isla Quiroga (47°45'S, 65°53°W), Argentina, during 2019. We found that both male and female RP moved north, reaching the northern Uruguayan coast (32°30'), but southward, males traveled farther than females, reaching latitudes as far south as the Antarctic ocean. Males spend 33% of their time, while females only spend 7% of their time south of their breeding colony. Males dispersed more than females: latitudinal length (distance between northernmost and southernmost points) was 2250 km for females and 3250 km for males, and area according to the 50% Kernel density contour was threefold larger for males than for females. Males traveled farther offshore than females (190 km males vs. 145 km females) and spent more time in colder waters than females. Migration movements of MP have been described previously and were similar to RP female dispersion, but very different from RP males distribution. Latitudinal length for PM was 2100 km and they used warmer waters than RP. Area overlap (50% Kernel contour) between RP and MP was about 40-60% during April-May; 30% in June-July and no overlap in August. Female RP were exclusively responsible for these shared areas because male RP were farther south and farther offshore, even beyond the continental shelf. Different diets and breeding schedules might be responsible for the segregation between species. This study shows sexual segregation in RP at latitudinal and longitudinal levels, and an overlap between MP and female RP winter areas. Authors: melina barrionuevo¹, Annick Morgenthaler², Ana Millones², Nahuel Marchisio¹, Esteban Frere¹ ¹UNPA-CONICET, ²UNPA Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Antarctic Ocean Argentina Pingüino ENVELOPE(-56.650,-56.650,-64.266,-64.266) The Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Animal Science Ornithology Emerging Technologies |
spellingShingle |
Animal Science Ornithology Emerging Technologies 3rd World Seabird Conference 2021 Barrionuevo, Melina Winter ground segregation between two neighboring breeding penguins |
topic_facet |
Animal Science Ornithology Emerging Technologies |
description |
Abstract: Knowledge of the dispersion of seabirds during migration may provide information on predictable foraging areas, potential overlap with human activities and target conservation zones. The aim of this study was to analyze spatial distribution of Southern rockhoppers penguins -RP- (Eudyptes chrysocome chrysocome) and Magellanic penguins -MP- (Spheniscus magellanicus) during migration. We used geolocators (MK3 & MK4) to study migration movements of 10 RP breeding at Isla Pingüino (47°54'S; 65°43'W) and 20 MP breeding at Isla Quiroga (47°45'S, 65°53°W), Argentina, during 2019. We found that both male and female RP moved north, reaching the northern Uruguayan coast (32°30'), but southward, males traveled farther than females, reaching latitudes as far south as the Antarctic ocean. Males spend 33% of their time, while females only spend 7% of their time south of their breeding colony. Males dispersed more than females: latitudinal length (distance between northernmost and southernmost points) was 2250 km for females and 3250 km for males, and area according to the 50% Kernel density contour was threefold larger for males than for females. Males traveled farther offshore than females (190 km males vs. 145 km females) and spent more time in colder waters than females. Migration movements of MP have been described previously and were similar to RP female dispersion, but very different from RP males distribution. Latitudinal length for PM was 2100 km and they used warmer waters than RP. Area overlap (50% Kernel contour) between RP and MP was about 40-60% during April-May; 30% in June-July and no overlap in August. Female RP were exclusively responsible for these shared areas because male RP were farther south and farther offshore, even beyond the continental shelf. Different diets and breeding schedules might be responsible for the segregation between species. This study shows sexual segregation in RP at latitudinal and longitudinal levels, and an overlap between MP and female RP winter areas. Authors: melina barrionuevo¹, Annick Morgenthaler², Ana Millones², Nahuel Marchisio¹, Esteban Frere¹ ¹UNPA-CONICET, ²UNPA |
format |
Article in Journal/Newspaper |
author |
3rd World Seabird Conference 2021 Barrionuevo, Melina |
author_facet |
3rd World Seabird Conference 2021 Barrionuevo, Melina |
author_sort |
3rd World Seabird Conference 2021 |
title |
Winter ground segregation between two neighboring breeding penguins |
title_short |
Winter ground segregation between two neighboring breeding penguins |
title_full |
Winter ground segregation between two neighboring breeding penguins |
title_fullStr |
Winter ground segregation between two neighboring breeding penguins |
title_full_unstemmed |
Winter ground segregation between two neighboring breeding penguins |
title_sort |
winter ground segregation between two neighboring breeding penguins |
publisher |
Underline Science Inc. |
publishDate |
2021 |
url |
https://dx.doi.org/10.48448/1yyj-ba92 https://underline.io/lecture/34684-winter-ground-segregation-between-two-neighboring-breeding-penguins |
long_lat |
ENVELOPE(-56.650,-56.650,-64.266,-64.266) |
geographic |
Antarctic Antarctic Ocean Argentina Pingüino The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Argentina Pingüino The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean |
op_doi |
https://doi.org/10.48448/1yyj-ba92 |
_version_ |
1766264305330683904 |