Cadmium, Copper, Lead, and Zinc in Five Toothed Whale Species of the Mediterranean Sea

The cadmium, lead, copper, and zinc levels were measured in six organs (lung, liver, kidney, skin, muscle, and bone) from 18 specimens of toothed whales, belonging to five species, found stranded along the Corsican coast between November 1993 and December 1998. The five species examined were the bottlenose dolphin Tursiops truncatus, the common dolphin Delphinus delphis, the striped dolphin Stenella coeruleoalba, the pilot whale Globicephala melas, and the Risso's dolphin Grampus griseus. The values obtained demonstrate that there is a great variability in the accumulation of toxic metals. A comparison of the values with those obtained in other geographical regions also demonstrates an extensive variability in metal levels. The presence of metals in the stomach contents of three of the individuals studied shows that the food source is responsible for a significant input of pollutants to the whales. Measured pollutant levels in whales are thus the result of an accumulation occurring throughout the animal's life.

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Microplastics in the stomach contents of common dolphin (Delphinus delphis) stranded on the Galician coasts (NW Spain, 2005–2010)

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2018.10.026 ◽

2018 ◽

Vol 137 ◽

pp. 526-532 ◽

Cited By ~ 30

Author(s):

Alberto Hernandez-Gonzalez ◽

Camilo Saavedra ◽

Jesús Gago ◽

Pablo Covelo ◽

M. Begoña Santos ◽

...

Keyword(s):

Stomach Contents ◽

Common Dolphin ◽

Nw Spain ◽

Delphinus Delphis

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Cross-sectional Anatomy, Computed Tomography and Magnetic Resonance Imaging of the Head of Common Dolphin (Delphinus delphis) and Striped Dolphin (Stenella coeruleoalba)

Anatomia Histologia Embryologia ◽

10.1111/ahe.12103 ◽

2014 ◽

Vol 44 (1) ◽

pp. 13-21 ◽

Cited By ~ 6

Author(s):

J. M. Alonso-Farré ◽

M. Gonzalo-Orden ◽

J. D. Barreiro-Vázquez ◽

A. Barreiro-Lois ◽

M. André ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Common Dolphin ◽

Resonance Imaging ◽

Cross Sectional ◽

Stenella Coeruleoalba ◽

Striped Dolphin ◽

Delphinus Delphis ◽

Sectional Anatomy

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Age and growth of some delphinids in south-eastern Brazil

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315407053398 ◽

2007 ◽

Vol 87 (1) ◽

pp. 293-303 ◽

Cited By ~ 18

Author(s):

Salvatore Siciliano ◽

Renata Maria A. Ramos ◽

Ana Paula M. Di Beneditto ◽

Marcos César O. Santos ◽

Ana Bernadete Fragoso ◽

...

Keyword(s):

Growth Curve ◽

Atlantic Coast ◽

Age And Growth ◽

Common Dolphin ◽

Pilot Whale ◽

Stenella Frontalis ◽

Stenella Coeruleoalba ◽

South Eastern ◽

Spotted Dolphin ◽

Eastern Brazil

This study provides the first compilation on age and growth of some delphinids in south-eastern Brazil (18°25′S–25°45′S). A total of 154 delphinids were reported: 44 Atlantic spotted dolphin Stenella frontalis; 36 bottlenose dolphin Tursiops truncatus; 26 ‘Brazilian’ common dolphin Delphinus sp.; 20 rough-toothed dolphin Steno bredanensis; 16 Fraser's dolphin Lagenodelphis hosei; 3 false killer whale Pseudorca crassidens; 3 unidentified Stenella sp.; 2 pantropical spotted dolphin Stenella attenuata; 2 short-finned pilot whale Globicephala macrorhynchus; 1 spinner dolphin Stenella longirostris; and 1 striped dolphin Stenella coeruleoalba. Age was estimated by counting the number of growth layer groups present in the dentine in 74.5% of the sample. The growth of 92 individuals of the first five species was determined by the Gompertz model to length-at-age data. Stenella frontalis—the oldest specimen was 23 y and the asymptotic length of 224.4 cm predicted by growth curve occurred at about 20 y; T. truncatus—the oldest specimen was 26 y and the asymptotic length of 301.3 cm predicted by growth curve occurred at about 20 y; Delphinus sp.—the oldest dolphin was 18 y and the asymptotic length of 215.9 cm predicted by growth curve occurred at about 5–6 y; S. bredanensis—the oldest specimen was 24 y and the asymptotic length of 258.1 cm predicted by growth curve occurred at about 10 y; L. hosei—the oldest specimen was 19 y and the asymptotic length of 231.2 cm predicted by growth curve occurred at about 7–8 y. Only age was estimated for the other species. The age-at-length data for S. frontalis, Delphinus sp., S. bredanensis and L. hosei were consistent, suggesting a good agreement with previous work on these species. For T. truncatus, the age at asymptotic length obtained in this study might be confirmed by increasing the sample size. The information currently presented will contribute to further life history research of delphinids on the western south Atlantic coast.

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Dolphin Whistle Track Estimation Using Sequential Monte Carlo Probability Hypothesis Density Filter

Dhaka University Journal of Science ◽

10.3329/dujs.v62i1.21954 ◽

2015 ◽

Vol 62 (1) ◽

pp. 17-20

Author(s):

Imtiaz Ahmed

Keyword(s):

Monte Carlo ◽

Sequential Monte Carlo ◽

Ground Truth ◽

Tracking Performance ◽

Estimation Accuracy ◽

Common Dolphin ◽

Stenella Coeruleoalba ◽

Probability Hypothesis Density ◽

Delphinus Delphis ◽

Density Filter

This article focuses on possible automation of dolphin whistle track estimation process within the context of Multiple Target Tracking (MTT). It provides automatic whistle track estimation from raw hydrophone measurements using the Sequential Monte Carlo Probability Hypothesis Density (SMC-PHD) filter. Hydrophone measurements for three different types of species namely bottlenose dolphin (Tursiops truncates), common dolphin (Delphinus delphis) and striped dolphin (Stenella coeruleoalba) have been used to benchmark the tracking performance of the SMC-PHD filter against three major challenges- the presence of multiple whistles, spontaneous death/birth of whistles and multiple whistles crossing each other. Quantitative analysis of the whistle track estimation accuracy is not possible since there is no ground truth type track for the dolphin whistles. Hence visual inspection of estimated tracks has been used corroborate the satisfactory tracking performance in the presence of all three challenges. DOI: http://dx.doi.org/10.3329/dujs.v62i1.21954 Dhaka Univ. J. Sci. 62(1): 17-20, 2014 (January)

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Stomach contents of English Channel cetaceans stranded on the coast of Normandy

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315405012762 ◽

2005 ◽

Vol 85 (6) ◽

pp. 1539-1546 ◽

Cited By ~ 40

Author(s):

J.F. De Pierrepont ◽

B. Dubois ◽

S. Desormonts ◽

M.B. Santos ◽

J.P. Robin

Keyword(s):

Marine Mammals ◽

Bottlenose Dolphins ◽

Stomach Contents ◽

Important Species ◽

Stenella Coeruleoalba ◽

Delphinus Delphis ◽

Common Squid ◽

Pilot Whales ◽

The University ◽

Common Dolphins

During 1998–2003 stomach contents of 47 marine mammals stranded on the coast of Normandy were analysed. The animals were first examined by a veterinary network and stomach contents were analysed at the University of Caen. The sample comprised: 26 common dolphins (Delphinus delphis), four bottlenose dolphins (Tursiops truncatus), seven harbour porpoises (Phocoena phoecoena), five grey seals (Halichoerus grypus), two long-finned pilot whales (Globicephala melas), one white beaked dolphin (Lagenorhynchus albirostris), one minke whale (Balaenoptera acurostrata) and one striped dolphin (Stenella coeruleoalba). The identification of food items was done using hard parts (i.e. fish otoliths and cephalopod beaks). Diet indices were computed including prey frequency and percentage by number. Common dolphins ate mainly gadoid fish (Trisopterus sp.), gobies and mackerel (Scomber scombrus). Cephalopods occurred in small numbers in the diet and commercially important species (cuttlefish and common squid) were scarce.

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Size data and stomach contents of common dolphins, Delphinus delphis, near Plymouth

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s002531540004296x ◽

1986 ◽

Vol 66 (2) ◽

pp. 319-322 ◽

Cited By ~ 9

Author(s):

P. L. Pascoe

Keyword(s):

Natural History ◽

Stomach Contents ◽

British Museum ◽

Common Dolphin ◽

Delphinus Delphis ◽

South West ◽

Seasonal Basis ◽

The Common ◽

Common Dolphins ◽

Size Data

INTRODUCTIONThe laboratory at Plymouth was notified of the capture of five dolphins in a commercial trawl on 9 December 1982, three of the specimens were living and therefore immediately released. The remaining two were brought to the laboratory, identified as Delphinus delphis Linnaeus, 1758, their size and sex were recorded and the stomachs removed for examination of their contents. The exact location of capture was not recorded, but is known to be within 40 miles of Plymouth.Reports of strandings of D. delphis collected by the British Museum (Natural History), (Harmer, 1914–27; Fraser, 1934, 1946, 1953, 1974) and more recent recorded sightings (Evans, 1980) show that the common dolphin is clearly not rare in British waters. Although the species has been recorded off all British coasts, sightings and strandings are concentrated off the south and south-west coasts of Britain and Ireland. The variation in their numbers and distribution both during this century and on a seasonal basis each year has been accounted for mainly by the fluctuation and movement of their food supply (Evans, 1980; Sheldrick, 1976).

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Cetacean strandings along the German North Sea coastline 1604–2017

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315421000503 ◽

2021 ◽

pp. 1-20

Author(s):

Carl Christian Kinze ◽

Richard Czeck ◽

Helena Herr ◽

Ursula Siebert

Keyword(s):

North Sea ◽

Native Species ◽

Sperm Whale ◽

Beluga Whale ◽

Delphinapterus Leucas ◽

Common Dolphin ◽

Physeter Macrocephalus ◽

Pilot Whale ◽

Stenella Coeruleoalba ◽

Fin Whale

Abstract The occurrence of 19 cetacean species along the German North Sea coastline as well as the lower reaches of the major rivers discharging into the German Bight is reviewed for the period 1604–2017 based on records of dead animals, either stranded dead or put to death. The harbour porpoise (Phocoena phocoena) is considered the most abundant and only native species in German coastal and riverine waters. Based on written sources its presence can be traced back to at least 1651, although with statistical data only available from 1990. Finds of further 18 species have been documented: white-beaked dolphin (Lagenorhynchus albirostris), bottlenose dolphin (Tursiops truncatus), Atlantic white-sided dolphin (Lagenorhynchus acutus), common dolphin (Delphinus delphis), striped dolphin (Stenella coeruleoalba), Risso's dolphin (Grampus griseus), long-finned pilot whale (Globicephala melas), killer whale (Orcinus orca), beluga whale (Delphinapterus leucas), narwhal (Monodon monoceros), Sowerby's beaked whale (Mesoplodon bidens), northern bottlenose whale (Hyperoodon ampullatus), sperm whale (Physeter macrocephalus), minke whale (Balaenoptera acutorostrata), sei whale (Balaenoptera borealis), fin whale (Balaenoptera physalus), blue whale (Balaenoptera musculus) and humpback whale (Megaptera novaeangliae). This review corrects several false species assignments earlier introduced in literature based on incorrect scientific or ambiguous German vernacular names and recovers lost records of beluga whale, northern bottlenose whale, sperm whale and fin whale.

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Comparative Anatomy of the Nasal Cavity in the Common Dolphin Delphinus delphis L., Striped Dolphin Stenella coeruleoalba M. and Pilot Whale Globicephala melas T.: A Developmental Study

Animals ◽

10.3390/ani11020441 ◽

2021 ◽

Vol 11 (2) ◽

pp. 441

Author(s):

Alvaro García de los Ríos y Loshuertos ◽

Marta Soler Laguía ◽

Alberto Arencibia Espinosa ◽

Alfredo López Fernández ◽

Pablo Covelo Figueiredo ◽

...

Keyword(s):

Nasal Cavity ◽

Nasal Mucosa ◽

Developmental Study ◽

Common Dolphin ◽

Pilot Whale ◽

3D Reconstructions ◽

Stenella Coeruleoalba ◽

Nasal Cavities ◽

External Nose ◽

The Common

Our goal was to analyze the main anatomical structures of the dolphin external nose and nasal cavity from fetal developmental stages to adult. Endoscopy was used to study the common development of the external nose and the melon, and nasal mucosa. Magnetic resonance imaging (MRI) and anatomical sections were correlated with anatomical sections. Computed tomography (CT) was used to generate 3D reconstructions of the nasal bones and nasal cavities to study its development. Dissections, histological and pathological studies were carried out on the nasal mucosa to understand its function. These results were compared with the horse. Endoscopy showed an external nose with two lips and the upper lip is divided by a groove due to the nasal septum and an obstruction of right nasal cavity was diagnosed in a newborn. Two diverticula (air sacs) were found in the nasal vestibule and an incisive recess (premaxillary sac) in the nasal cavity. These findings were corroborated by 3D reconstructions of the nasal cavities, MRI, anatomical sections and dissections. The presphenoid and ethmoid bones were fused at early stages of fetal development. The ethmoid is the last bone to ossify in the nasal cavity.

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