scholarly journals Rare sightings of southern right whales (Eubalaena australis) on a feeding ground off the South Sandwich Islands, including a known individual from Península Valdés, Argentina

2016 ◽  
Vol 33 (1) ◽  
pp. 342-349 ◽  
Author(s):  
Griet Nijs ◽  
Victoria J. Rowntree
Keyword(s):  
The South ◽  
Feeding Ground ◽  
Eubalaena Australis ◽  
Right Whales ◽  
Southern Right Whales ◽  
South Sandwich Islands

scholarly journals Genetic Diversity and Connectivity of Southern Right Whales (Eubalaena australis) Found in the Brazil and Chile–Peru Wintering Grounds and the South Georgia (Islas Georgias del Sur) Feeding Ground

2020 ◽  
Vol 111 (3) ◽  
pp. 263-276 ◽  
Author(s):  
Emma L Carroll ◽  
Paulo H Ott ◽  
Louise F McMillan ◽  
Bárbara Galletti Vernazzani ◽  
Petra Neveceralova ◽  
...  
Keyword(s):  
Genetic Data ◽  
South Atlantic ◽  
South American ◽  
The South ◽  
Wintering Grounds ◽  
South Georgia ◽  
Feeding Ground ◽  
Eubalaena Australis ◽  
Right Whales ◽  
Southern Right Whales

Abstract As species recover from exploitation, continued assessments of connectivity and population structure are warranted to provide information for conservation and management. This is particularly true in species with high dispersal capacity, such as migratory whales, where patterns of connectivity could change rapidly. Here we build on a previous long-term, large-scale collaboration on southern right whales (Eubalaena australis) to combine new (nnew) and published (npub) mitochondrial (mtDNA) and microsatellite genetic data from all major wintering grounds and, uniquely, the South Georgia (Islas Georgias del Sur: SG) feeding grounds. Specifically, we include data from Argentina (npub mtDNA/microsatellite = 208/46), Brazil (nnew mtDNA/microsatellite = 50/50), South Africa (nnew mtDNA/microsatellite = 66/77, npub mtDNA/microsatellite = 350/47), Chile–Peru (nnew mtDNA/microsatellite = 1/1), the Indo-Pacific (npub mtDNA/microsatellite = 769/126), and SG (npub mtDNA/microsatellite = 8/0, nnew mtDNA/microsatellite = 3/11) to investigate the position of previously unstudied habitats in the migratory network: Brazil, SG, and Chile–Peru. These new genetic data show connectivity between Brazil and Argentina, exemplified by weak genetic differentiation and the movement of 1 genetically identified individual between the South American grounds. The single sample from Chile–Peru had an mtDNA haplotype previously only observed in the Indo-Pacific and had a nuclear genotype that appeared admixed between the Indo-Pacific and South Atlantic, based on genetic clustering and assignment algorithms. The SG samples were clearly South Atlantic and were more similar to the South American than the South African wintering grounds. This study highlights how international collaborations are critical to provide context for emerging or recovering regions, like the SG feeding ground, as well as those that remain critically endangered, such as Chile–Peru.

scholarly journals Sightings of southern right whales (Eubalaena australis) in Namibian waters, 1971-1999

2020 ◽  
pp. 181-185
Author(s):  
J-P. Roux ◽  
P.B. Best ◽  
P.E. Stander†
Keyword(s):  
Atlantic Ocean ◽  
The South ◽  
East Atlantic ◽  
Eubalaena Australis ◽  
Aerial Surveys ◽  
Right Whales ◽  
Southern Right Whales

Southern right whales were originally abundant in Namibian waters in winter and spring. They were either eradicated from the region ordriven to extremely low numbers more than a century ago. Since 1971, 36 incidental sightings and three aerial surveys confirm the regularpresence of the species within its historical calving range, between June and December. Calving has been recorded in four successive yearsand at least 10 calves were born in the area between 1996 and 1999, confirming the existence of a small established breeding population.This represents a northward extension of the hitherto known modern regular calving range in the South East Atlantic Ocean by more than1,000km.

scholarly journals Changing patterns of habitat use by southern right whales (Eubalaena australis) on their nursery ground at Península Valdés, Argentina, and in their long-range movements

2020 ◽  
pp. 133-143
Author(s):  
Victoria J. Rowntree ◽  
Roger S. Payne ◽  
Donald M. Schell
Keyword(s):  
Habitat Use ◽  
Nitrogen Isotope ◽  
Isotope Ratios ◽  
Small Scale ◽  
Nursery Ground ◽  
Adult Males ◽  
Human Disturbances ◽  
Eubalaena Australis ◽  
Right Whales ◽  
Southern Right Whales

Southern right whales (Eubalaena australis) have been studied on their nursery ground at Península Valdés, Argentina, every year since 1970. Since 1990, 1,208 individuals have been identified from photographs taken during annual aerial surveys; 618 whales were seen in two or more years. Patterns of habitat use have changed during the study in ways which suggest that right whales may be capable of substantial behavioral and ecological flexibility. One male and three females from Península Valdés have been sighted on other nursery grounds (Tristan da Cunha and southern Brazil). Three individuals from Península Valdés were sighted on feeding grounds off Shag Rocks and South Georgia. Some right whales from Península Valdés showed carbon and nitrogen isotope ratios very similar to those seen in right whales off South Africa, while others showed distinctive isotope ratios indicating that they fed in a different area. Whales of all ages and both sexes moved frequently between three major regions of concentration on the Península Valdés nursery ground. Subadults and adult females with calves were resighted at higher rates than adult males and females in non-calf years. Changes in the geographic distribution of whales at the Península include: (1) abandonment of a major region of concentration; (2) establishment of a nursery area adjacent to thecentre of a growing whalewatching industry; and (3) small-scale shifts in distribution, possibly in response to natural and human disturbances.

Southern right whales ( Eubalaena australis ) return to a former wintering calving ground: Fowlers Bay, South Australia

2019 ◽  
Vol 35 (4) ◽  
pp. 1438-1462
Author(s):  
Claire Charlton ◽  
Rhianne Ward ◽  
Robert D. McCauley ◽  
Robert L. Brownell ◽  
Sacha Guggenheimer ◽  
...  
Keyword(s):  
South Australia ◽  
Eubalaena Australis ◽  
Right Whales ◽  
Southern Right Whales

scholarly journals Domoic acid in a marine pelagic food web: Exposure of southern right whales Eubalaena australis to domoic acid on the Península Valdés calving ground, Argentina

Harmful Algae ◽  
2017 ◽  
Vol 68 ◽  
pp. 248-257 ◽  
Author(s):  
Valeria C. D’Agostino ◽  
Mariana Degrati ◽  
Viviana Sastre ◽  
Norma Santinelli ◽  
Bernd Krock ◽  
...  
Keyword(s):  
Food Web ◽  
Domoic Acid ◽  
Eubalaena Australis ◽  
Pelagic Food Web ◽  
Right Whales ◽  
Southern Right Whales
Sign in / Sign up

Export Citation Format

Share Document