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article

Legacy and emerging organic pollutants in liver and plasma of long-finned pilot whales (Globicephala melas) from waters surrounding the Faroe Islands

Katrin S. Hoydal, Robert J. Letcher, David A.D. Blair, Maria Dam, more

Science of the Total Environment > 2015 > 520 > Complete > 270-285

Concentrations of PCBs, organochlorine pesticides (OCPs), brominated flame retardants and a suite of relevant metabolites of these POPs, in all 175 different compounds, were determined in liver and plasma of traditionally hunted pilot whales (n=14 males and n=13 females of different age groups) from the Faroe Islands.The main objectives of this study were to determine differences in the presence and...

article

The answer, my friend, is blowin’ in the wind: Blow sampling provides a new dimension to whale population monitoring

Elena Valsecchi

Molecular Ecology Resources > 24 > 8 > n/a - n/a

Marine mammals play a fundamental role in the functioning of healthy marine ecosystems and are important indicator species. Studying their biology, distributions, behaviour and health are still technically and logistically demanding for researchers. However, the efforts and commitment have not been in vain, since we are witnessing constant and exponential advancement in the study of these animals,...

article

Using citizen science data to assess the vulnerability of bottlenose dolphins to human impacts along England's South Coast

S. Corr, R. Dudley, T. Brereton, N. Clear, more

Animal Conservation > 27 > 4 > 461 - 477

Coastal bottlenose dolphin populations are highly vulnerable due to their small population sizes and proximity to human activities. Long‐term studies in the UK have monitored populations protected within Special Areas of Conservation (SACs) since the 1990s, but a small community of bottlenose dolphins inhabiting the coastal waters of southern England has received much less attention. The English Channel...

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Fine‐scale distribution of the lungworm Halocercus delphini in the lungs of the striped dolphin, Stenella coeruleoalba: implications about migration pathways and functional significance

Rachel V. Pool, Neus Pons‐García, Francesco Consoli, Miguel Rivero, more

Marine Mammal Science > 40 > 3 > n/a - n/a

Despite their high pathogenicity, limited knowledge is available on intrahost migration pathways and microhabitat distribution of pseudaliid lungworms. In this study, the distribution of Halocercus delphini in the lungs of the striped dolphin, Stenella coeruleoalba, was analyzed on three scales: between the right and left lungs, within the lungs, and between worm clusters. Evidence of a relationship...

article

Earliest Records of Holocene Cetaceans in the Black Sea

Magie Aiken, Elena Gladilina, Canan Çakirlar, Serhii Telizhenko, more

Journal of Quaternary Science > 39 > 4 > 585 - 591

The timing of the Holocene transition of the Black Sea from a brackish lake to a marine sea has long been debated. Here, we report on the earliest records of cetaceans in the Black Sea region as a proxy for the connection with the Mediterranean and the transition from a brackish to marine environment. We base our analysis on cetacean skeletal finds and archival data on cetacean skeletal remains from...

article

Geographic distribution of the Cross Seamount beaked whale based on acoustic detections

Jennifer L. K. McCullough, E. Elizabeth Henderson, Jennifer S. Trickey, Jay Barlow, more

Marine Mammal Science > 40 > 1 > 164 - 183

Beaked whales produce frequency‐modulated echolocation pulses that appear to be species‐specific, allowing passive acoustic monitoring to play a role in understanding spatio‐temporal patterns. The Cross Seamount beaked whale is known only from its unique echolocation signal (BWC) with no confirmed species identification. This beaked whale spans the Pacific Ocean from the Mariana Archipelago to Baja...

article

Identification of priority cetacean areas in the north‐east Atlantic using systematic conservation planning

Joan Giménez, James J. Waggitt, Mark Jessopp

Aquatic Conservation: Marine and Freshwater Ecosystems > 33 > 12 > 1571 - 1579

Mobile marine protected areas have been proposed for the conservation of highly seasonal or mobile marine megafauna. However, seasonal data on the distribution of marine wildlife to inform protected areas are generally scarce worldwide, especially for cetaceans, which makes dynamic solutions difficult to implement. Furthermore, conservation objectives are often set at the level of individual species...

article

Using integrated multispecies occupancy models to map co‐occurrence between bottlenose dolphins and fisheries in the Gulf of Lion, French Mediterranean Sea

Valentin Lauret, Hélène Labach, Léa David, Matthieu Authier, more

Oikos > 2023 > 11 > n/a - n/a

In the Mediterranean Sea, interactions between marine species and human activities are prevalent. The coastal distribution of bottlenose dolphins Tursiops truncatus and the predation pressure they put on fishing stocks lead to regular interactions with fisheries. Multispecies occupancy models are a relevant framework to estimate co‐occurrence between two (or more) species while accounting for false...

article

Killer whales at northern Patagonia, Argentina: Evidence of different foraging groups from stable isotopes

Rocio Loizaga, Nestor A. García, Cristian A. Durante, Damián G. Vales, more

Marine Mammal Science > 39 > 4 > 1121 - 1135

Killer whales (Orcinus orca) are highly mobile, large marine apex predators that inhabit all oceans. Despite being the most conspicuous top predator, little is known about their ecology along Patagonia, Argentina. Here, we used carbon (δ¹³C) and nitrogen (δ¹⁵N) isotope analysis of bone and dentine collagen from killer whales (n = 13) stranded in northern Patagonia during the period 1970–2014 to assess...

article

Genomics reveals the role of admixture in the evolution of structure among sperm whale populations within the Mediterranean Sea

Biagio Violi, Menno J. Jong, Alexandros Frantzis, Paraskevi Alexiadou, more

Molecular Ecology > 32 > 11 > 2715 - 2731

In oceanic ecosystems, the nature of barriers to gene flow and the processes by which populations may become isolated are different from the terrestrial environment, and less well understood. In this study we investigate a highly mobile species (the sperm whale, Physeter macrocephalus) that is genetically differentiated between an open North Atlantic population and the populations in the Mediterranean...

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Genomics reveals a genetically isolated population of the Pacific white‐sided dolphin (Lagenorhynchus obliquidens) distributed in the Sea of Japan

Miwa Suzuki, Kaho Ohno, Eitaro Sawayama, Shin‐Ichi Morinaga, more

Molecular Ecology > 32 > 4 > 881 - 891

The processes by which animals become genetically isolated in an open environment such as the ocean have not yet been fully elucidated. Morphologically different populations of Pacific white‐sided dolphin Lagenorhynchus obliquidens are observed sympatrically in the Sea of Japan. However, genetic studies that exclusively used limited mitochondrial loci or microsatellite DNA have failed to demonstrate...

article

A vessel collision report for Bryde's whales (Balaenoptera brydei) off the northern coast of São Paulo, Brazil

Aline Athayde, Júlio Cardoso, Arlaine Francisco, Salvatore Siciliano

Aquatic Conservation: Marine and Freshwater Ecosystems > 33 > 2 > 226 - 230

Vessel collisions are an important threat to several cetacean species, both large and small. In addition to negatively affecting the animals themselves, collisions can also damage or sink vessels, threatening both human safety and marine industry economics. Larger cetaceans seem to be the most affected by vessel collisions, and vessel strikes with Bryde's whales (Balaenoptera brydei/Balaenoptera edeni...

article

Cetacean acoustic occurrence on the US Atlantic Outer Continental Shelf from 2017 to 2020

Katie A. Kowarski, S. Bruce Martin, Emily E. Maxner, Carmen B. Lawrence, more

Marine Mammal Science > 39 > 1 > 175 - 199

Long‐term distribution data for cetaceans are lacking, inhibiting the ability of management bodies to assess trends and react appropriately. Such is true even along the US Atlantic Outer Continental Shelf (OCS) where previous passive acoustic monitoring programs have laid the groundwork for monitoring cetacean occurrence over a multidecadal scale. Here, we continue and expand the scope of previous...

article

Geographic range size, water temperature, and extrinsic threats predict the extinction risk in global cetaceans

Chuanwu Chen, Thomas A. Jefferson, Bingyao Chen, Yanping Wang

Global Change Biology > 28 > 22 > 6541 - 6555

Despite the fact that cetaceans provide significant ecological contributions to the health and stability of aquatic ecosystems, many are highly endangered with nearly one‐third of species assessed as threatened with extinction. Nevertheless, to date, few studies have explicitly examined the patterns and processes of extinction risk and threats for this taxon, and even less between the two subclades...

article

Diet of striped dolphins (Stenella coeruleoalba) in southern Spanish waters

Camilo Saavedra, Manuel García‐Polo, Joan Giménez, José Luis Mons, more

Marine Mammal Science > 38 > 4 > 1566 - 1582

Identifiable food remains were analyzed from 46 stomachs of striped dolphins (Stenella coeruleoalba) stranded in southern Spain between 2007 and 2014. Results suggest that the species feeds mainly on mesopelagic and neritic fish, but also on oceanic squids. Fish species of the family Myctophidae were the main prey in terms of numerical importance and reconstructed prey weight (62% N and 29% W), followed...

article

Interactions between the common dolphin, Delphinus delphis, and the Portuguese purse seine fishery over a period of 15 years (2003–2018)

Inês C. Dias, Ana Marçalo, Diana Feijó, Isabel Domingos, more

Aquatic Conservation: Marine and Freshwater Ecosystems > 32 > 8 > 1351 - 1364

Interactions between cetaceans and the purse seine fishery in coastal waters of mainland Portugal were investigated using onboard observations over a period of 15 years (2003–2018). In 10% of the fishing sets, there were interactions with one of three species of cetaceans: common dolphin (Delphinus delphis), bottlenose dolphin (Tursiops truncatus), and harbour porpoise (Phocoena phocoena). The common...

article

Assessing effectiveness and side effects of likely “seal safe” pinger sounds to ward off endangered franciscana dolphins (Pontoporia blainvillei)

Renan L. Paitach, Mats Amundin, Sara Königson, Marta J. Cremer

Marine Mammal Science > 38 > 3 > 1007 - 1021

The franciscana (Pontoporia blainvillei) is the most endangered dolphin in the western South Atlantic Ocean due to bycatch. Our goal was to test the efficiency of a likely “seal safe” pinger (Banana Pinger, Fishtek Marine Ltd.) to ward off franciscanas, as well as investigating possible side effects of habituation and habitat exclusion. We deployed the pinger within a grid of click detectors (C‐POD,...

article

Nutritional grouping of marine forage species reveals contrasted exposure of high trophic levels to essential micro‐nutrients

Tiphaine Chouvelon, Lola Gilbert, Florence Caurant, Paula Méndez‐Fernandez, more

Oikos > 2022 > 7 > n/a - n/a

By transferring energy and nutrients from plankton to top predators, forage species play a major ecological role in marine food webs. While large differences in energy densities have been demonstrated among these species, other determinants of their quality remain poorly explored. We analysed 78 forage species from the Bay of Biscay, NE Atlantic, for their concentrations in various chemical elements...

article

Pathological and epidemiological investigation of skin lesions in belugas (Delphinapterus leucas) from the St. Lawrence Estuary, Quebec, Canada

Rozenn Le Net, Sylvain Larrat, Robert Michaud, Stéphane Lair

Marine Mammal Science > 38 > 2 > 653 - 681

Following the evaluation of 26,020 photographs collected from 2003 to 2014 as part of a photo‐identification program in St. Lawrence Estuary belugas, an atlas of cutaneous anomalies, composed of 18 skin lesions categories (SLCs), is proposed. At least one SLC was present in 51%, 97%, and 94% of neonates, gray, and white belugas, respectively. The most common SLC observed were “single linear fissure”...

article

Strong and lasting impacts of past global warming on baleen whales and their prey

Andrea A. Cabrera, Elena Schall, Martine Bérubé, Pia Anderwald, more

Global Change Biology > 28 > 8 > 2657 - 2677

Global warming is affecting the population dynamics and trophic interactions across a wide range of ecosystems and habitats. Translating these real‐time effects into their long‐term consequences remains a challenge. The rapid and extreme warming period that occurred after the Last Glacial Maximum (LGM) during the Pleistocene–Holocene transition (7–12 thousand years ago) provides an opportunity to...

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Search results

Legacy and emerging organic pollutants in liver and plasma of long-finned pilot whales (Globicephala melas) from waters surrounding the Faroe Islands

The answer, my friend, is blowin’ in the wind: Blow sampling provides a new dimension to whale population monitoring

Using citizen science data to assess the vulnerability of bottlenose dolphins to human impacts along England's South Coast

Fine‐scale distribution of the lungworm Halocercus delphini in the lungs of the striped dolphin, Stenella coeruleoalba: implications about migration pathways and functional significance

Earliest Records of Holocene Cetaceans in the Black Sea

Geographic distribution of the Cross Seamount beaked whale based on acoustic detections

Identification of priority cetacean areas in the north‐east Atlantic using systematic conservation planning

Using integrated multispecies occupancy models to map co‐occurrence between bottlenose dolphins and fisheries in the Gulf of Lion, French Mediterranean Sea

Killer whales at northern Patagonia, Argentina: Evidence of different foraging groups from stable isotopes

Genomics reveals the role of admixture in the evolution of structure among sperm whale populations within the Mediterranean Sea

Genomics reveals a genetically isolated population of the Pacific white‐sided dolphin (Lagenorhynchus obliquidens) distributed in the Sea of Japan

A vessel collision report for Bryde's whales (Balaenoptera brydei) off the northern coast of São Paulo, Brazil

Cetacean acoustic occurrence on the US Atlantic Outer Continental Shelf from 2017 to 2020

Geographic range size, water temperature, and extrinsic threats predict the extinction risk in global cetaceans

Diet of striped dolphins (Stenella coeruleoalba) in southern Spanish waters

Interactions between the common dolphin, Delphinus delphis, and the Portuguese purse seine fishery over a period of 15 years (2003–2018)

Assessing effectiveness and side effects of likely “seal safe” pinger sounds to ward off endangered franciscana dolphins (Pontoporia blainvillei)

Nutritional grouping of marine forage species reveals contrasted exposure of high trophic levels to essential micro‐nutrients

Pathological and epidemiological investigation of skin lesions in belugas (Delphinapterus leucas) from the St. Lawrence Estuary, Quebec, Canada

Strong and lasting impacts of past global warming on baleen whales and their prey

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