scholarly journals Abundance, distribution and diet of the common dolphin, Delphinus delphis , in the northern Aegean Sea (Greece)

Author(s):  
Cristina Milani ◽  
Adriana Vella ◽  
Pavlos Vidoris ◽  
Aristidis Christidis ◽  
Emmanouil Koutrakis
2019 ◽  
Vol 35 (2) ◽  
pp. 679-688 ◽  
Author(s):  
Ali Ismen ◽  
Ismail Burak Daban ◽  
Mukadder Arslan Ihsanoglu ◽  
Cahide Cigdem Yıgın ◽  
Koray Cabbar ◽  
...  

1998 ◽  
Vol 20 (1) ◽  
pp. 25
Author(s):  
M. Long ◽  
R.J. Reid ◽  
C.M. Kemper

Twenty Tursiops truncatus and 20 Delphinus delphis from South Australia were analysed for cadmium levels, as were some fish and squid species which form part of their diet. In the dolphins, cadmium was accumulated mainly in the kidneys (range 0-38 μg/g), with levels in many individuals exceeding 20 μg/g (wet weight). On average, levels in kidney were three-fold higher than in liver and 26-fold higher than in muscle. Cadmium concentrations related to dolphin body length, but the relationship with tooth development class was less clear. 80% of the prey fish species analysed from Spencer Gulf exceeded NH & MRC health recommendations of 0.2 μg/g (wet weight) for human consumption. Sepioteuthis australis from upper Spencer Gulf contained significantly higher cadmium levels than Ceduna samples (0.21 ± 0.01 μg/g versus 0.13 ± 0.01 μg/g, p<0.001) (wet weight). On histological examination, 32% of adult dolphin kidneys showed pathological changes, proteinuria being the most common abnormality. High levels of cadmium were found in dolphins from widely spaced locations in South Australia.


2002 ◽  
Vol 127 (3) ◽  
pp. 300-306 ◽  
Author(s):  
Zoitsa Maniou ◽  
O Caryl Wallis ◽  
Michael Wallis

Author(s):  
P. L. Pascoe

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).


2018 ◽  
Vol 126 (2) ◽  
pp. 225-239 ◽  
Author(s):  
Morgan Churchill ◽  
Jacob Miguel ◽  
Brian L Beatty ◽  
Anjali Goswami ◽  
Jonathan H Geisler

2002 ◽  
Vol 268 (4) ◽  
pp. 411-429 ◽  
Author(s):  
Lori Marino ◽  
Keith D. Sudheimer ◽  
D. Ann Pabst ◽  
William A. Mclellan ◽  
David Filsoof ◽  
...  

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