White-beaked dolphin distribution and association with prey in the Barents Sea

Fall, Johanna; Skern‐Mauritzen, Mette

doi:10.1080/17451000.2013.872796

Cited by 16 publications

(11 citation statements)

References 29 publications

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“…They are known to target capelin in this region, and shift their distribution to track this fish species (Skern-Mauritzen et al 2011). However, they also eat a wide range of other small fish, including herring and some gadoids (Fall & Skern-Mauritzen 2014). The increased abundance of boreal fish species in Svalbard (Berge et al 2015;Fossheim et al 2015) and plasticity in prey choice by these seasonally resident balaenopterids and dolphins are likely to lead to an increased presence of these cetaceans in Svalbard waters.…”

Section: Seasonally Resident Cetacean Habitat Use and Niche Partitioningmentioning

confidence: 99%

Determining the species assemblage and habitat use of cetaceans in the Svalbard Archipelago, based on observations from 2002 to 2014

et al. 2018

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This study used 13 years of cetacean sighting data (2002-2014) from waters around the Svalbard Archipelago to determine key habitats for year-round resident species as well as seasonally resident species, and to explore spatial overlap between these groups via a combination of kernel density estimation and Maxent modelling. The data set consists of observations made by research vessels conducting various marine studies, coast guard ships and marine-cruise tourist operators. Data are reported from the seasonal period in which there is daylight (March-November), though 95% of the observations occurred June-September. Changes over the study period were investigated, within the limits of the data, to explore whether range shifts may be occurring. Fifteen cetacean species were reported. Among the resident ice-associated cetaceans, only white whales were reported frequently; they were seen exclusively in coastal habitats, in accordance with their known use of tidal glacier fronts for feeding in this region. Narwhal and bowhead whales were rare. Seasonally resident minke whales, fin whales, humpback whales, blue whales and sperm whales as well as small dolphins were seen frequently, in broad and somewhat overlapping habitats. Other less common seasonal residents included killer whales, northern bottlenose whales and sei whales; harbour porpoises and long-finned pilot whales were also reported, but rarely. Shifts over the study period towards higher latitudes, and into coastal environments, were observed for several seasonally resident species. These expansions are likely linked to warming ocean temperatures and a precipitous decline in sea-ice cover in the area.

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Section: Seasonally Resident Cetacean Habitat Use and Niche Partitioningmentioning

confidence: 99%

Determining the species assemblage and habitat use of cetaceans in the Svalbard Archipelago, based on observations from 2002 to 2014

et al. 2018

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“…2016), the east coast of Canada (mean = 8.6, Kinglsey & Reeves 1998, mean = 9.1, Simard et al . 2006), and in the Barents Sea (mean = 8.0, Fall & Skern‐Mauritzen 2014). Means, median, and modes were slightly larger compared to estimates recorded off Scotland (mean = 7.7, median = 4, mode = 2, Weir & Stockin 2001; Weir et al .…”

Section: Discussionmentioning

confidence: 99%

Fission–fusion dynamics of a pelagic delphinid in the arctic: the white‐beaked dolphin (Lagenorhynchus albirostris)

2021

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Delphinids exhibit great variability in their social structures. It is therefore important to document lesser known species, in extreme changing habitats, to compare and contrast mechanisms driving sociality. Here, we describe the first long-term assessment of social structure of white-beaked dolphins (Lagenorhynchus albirostris) using a compiled version of SOCPROG 2.8 and an 11-year photo-identification dataset (2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013) collected from whalewatching vessels at 2 sites (Faxaflói and Skjálfandi bays) off Iceland. We identified a total of 487 dolphins which are suggested to be part of an open population as shown by the discovery curve obtained analyzing photo-id data. The social analyses were restricted to 35 adults which were sighted on ≥5 different days. The mean residency time of white-beaked dolphins in our 2 study areas was of 95 days (SE = 35.63; 95% CI: 23-171), with the "migration-full interchange" model best describing movements of dolphins in and out of our 2 study sites. Social differentiation in this population was high (Likelihood: S = 0.87, SE = 0.04; r = 0.31, SE = 0.03) indicating diverse, non-random social relationships. Temporal associations best fit the model of "casual acquaintances" against the standardized lagged association rates with the majority of white-beaked dolphin associations being short-term, but with a few long-term across years. Testing for preferred companionship, long-term associations are favored over short-term. In this study, associations among white-beaked dolphins are short-term but with desirably long-term associations fitting into a society with fission-fusion dynamics. This information expands the latitudinal range for which social structure has been described for oceanic dolphin species.

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“…; Reeves et al . , ; Fall and Skern‐Mauritzen ; Jefferson et al . ; Galatius and Kinze ; Kinze ; NAMMCO ).…”

Section: Taxonomic Treatment and Species Descriptionsunclassified

Taxonomic revision of the dolphin genusLagenorhynchus

Vollmer

Ashe²,

Brownell

et al. 2019

Marine Mammal Science

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Evolutionary relationships among cetaceans within the family Delphinidae have been difficult to resolve due to the high number of species and their relatively rapid radiation. This is the case for the dolphin species currently placed in the genus Lagenorhynchus, and their relations to Cephalorhynchus and Lissodelphis species. Phylogenetic relationships among these species have been investigated using multiple lines of evidence, and that evidence consistently suggests that the six species currently assigned to Lagenorhynchus do not form a monophyletic group. Here, we summarize findings from studies of morphology, genetics, historical biogeography, and acoustics that offer insight into the phylogenetics of these taxa. We present the taxonomic basis for revision of Lagenorhynchus, propose retention of Lagenorhynchus albirostris and reassignment of the remaining five species into other existing generic names, namely Leucopleurus acutus, Sagmatias australis, Sagmatias cruciger, Sagmatias obliquidens, and Sagmatias obscurus. Making these revisions now so that the taxonomy better reflects evolutionary relationships among these species will ensure that future studies include the most appropriate taxa for investigating the 1 957 complex phylogenetic and systematic relationships among cetaceans. However, comprehensive analyses using multiple lines of evidence are still needed to clarify the phylogenetic relationships within and among the Lissodelphininae genera Cephalorhynchus, Lissodelphis, and Sagmatias.

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White-beaked dolphin distribution and association with prey in the Barents Sea

Cited by 16 publications

References 29 publications

Determining the species assemblage and habitat use of cetaceans in the Svalbard Archipelago, based on observations from 2002 to 2014

Determining the species assemblage and habitat use of cetaceans in the Svalbard Archipelago, based on observations from 2002 to 2014

Fission–fusion dynamics of a pelagic delphinid in the arctic: the white‐beaked dolphin (Lagenorhynchus albirostris)

Taxonomic revision of the dolphin genusLagenorhynchus

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