Toxic Element Concentrations in the Bottlenose (Tursiops truncatus), Striped (Stenella coeruleoalba) and Risso’s (Grampus griseus) Dolphins Stranded in Eastern Adriatic Sea

Mercury (Hg) and selenium (Se) concentrations were measured in muscle, liver, kidney, spleen and lung tissues of five cetacean species, three dolphin (Stenella coeruleoalba, Tursiops truncatus and Grampus griseus) and two whale species (Balaenoptera physalus and Ziphius cavirostris), stranded along the Croatian coast during the period 1999-2002. Statistically significant differences in Hg concentrations in muscle, spleen and lung, and Se in liver and lung of the different dolphin species were observed. Mercury levels in liver and spleen and Se levels in liver differed between young and adult T. truncatus species. A significant positive correlation between different tissue types for Hg and Se concentrations was observed. In all tissues tested, the lowest Hg and Se concentrations were found in B. physalus. Mercury concentrations were positively correlated with Se in all tissues. The results present one of few studies related to lung and spleen tissues in these mammals, particularly in the Adriatic Sea. Since very little data are available, this research provides new data on concentrations of Hg and Se in five cetacean species from the Adriatic Sea basin.

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Morphology of the lymph nodes in bottlenose dolphin (Tursiops truncatus) and striped dolphin (Stenella coeruleoalba) from the Adriatic Sea

Acta Veterinaria Hungarica ◽

10.1556/avet.53.2005.1.1 ◽

2005 ◽

Vol 53 (1) ◽

pp. 1-11 ◽

Cited By ~ 3

Author(s):

Snježana Vuković ◽

H. Lucić ◽

H. Gomerčić ◽

Martina Duras Gomerčić ◽

T. Gomerčić ◽

...

Keyword(s):

Lymph Node ◽

Lymph Nodes ◽

Mesenteric Lymph Node ◽

Tursiops Truncatus ◽

Adriatic Sea ◽

Lymphatic Tissue ◽

Stenella Coeruleoalba ◽

Striped Dolphin ◽

Terrestrial Mammals ◽

Mesenteric Lymph

Morphology of the lymph nodes was examined in six bottlenose dolphins (Tursiops truncatus) and three striped dolphins (Stenella coeruleoalba) from the Adriatic Sea. All animals had been found dead in nature. One group of the nodes was taken from the tracheal branching area and was marked as bifurcational lymph node, and the other group was taken from the mesenteric root and was marked as mesenteric lymph node. Microscopic analysis showed that the lymph nodes in both dolphin specieswere surrounded by a connective tissue capsule comprising smooth muscle cells. The parenchyma of the mesenteric and bifurcational lymph nodes in bottlenose dolphinwas divided into the peripherally situated cortex with the lymphatic nodules and diffuse lymphatic tissue, and the centrally situated medulla structured of the medullary cords separated by the medullary sinuses. These lymph nodes structurally correspond to the lymph nodes in the majority of terrestrial mammals. The mesenteric lymph node of striped dolphin also had a peripherally situated cortex and a centrally positioned medulla as the majority of terrestrial mammals. In the bifurcational lymph nodes of striped dolphin, there was a central dense lymphatic tissue with the lymphatic nodules and a peripheral less dense lymphatic tissue structured of the cell cords and sinuses. The bifurcational lymph node in striped dolphinresembledporcine lymph nodes and belonged to the inverse lymph nodes.

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Laminar and cytoarchitectonic features of the cerebral cortex in the Risso's dolphin (Grampus griseus), striped dolphin (Stenella coeruleoalba), and bottlenose dolphin (Tursiops truncatus)

Journal of Anatomy ◽

10.1111/j.1469-7580.2008.00936.x ◽

2008 ◽

Vol 213 (3) ◽

pp. 241-248 ◽

Cited By ~ 13

Author(s):

Rui Furutani

Keyword(s):

Cerebral Cortex ◽

Bottlenose Dolphin ◽

Tursiops Truncatus ◽

Stenella Coeruleoalba ◽

Striped Dolphin ◽

Grampus Griseus ◽

Risso's Dolphin

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Cetacei spiaggiati lungo le coste della Campania dal 2006 al 2011 (Mammalia: Cetacea)

Natural History Sciences ◽

10.4081/18 ◽

2012 ◽

Vol 153 (2) ◽

pp. 241

Author(s):

Nicola Maio ◽

Francesco Pollaro ◽

Fabio Di Nocera ◽

Esterina De Carlo ◽

Giorgio Galiero

Keyword(s):

Tursiops Truncatus ◽

Title Page ◽

Font Size ◽

Balaenoptera Acutorostrata ◽

Balaenoptera Physalus ◽

Stenella Coeruleoalba ◽

Delphinus Delphis ◽

Grampus Griseus ◽

Sono Stati

<div class="page" title="Page 1"><div class="layoutArea"><div class="column">Nel presente lavoro viene riportato il risultato del rilevamento degli spiaggiamenti e dei rinvenimenti in mare di Cetacei avvenuti negli anni 2006 - 2011 lungo le coste della Campania. I dati sono stati raccolti in base ad una collaborazione scientifica tra l’Università degli Studi di Napoli Federico II, l’Istituto Zooprofilattico Sperimentale del Mezzogiorno, il Centro Studi Cetacei e il Centro Studi Ecosistemi Marini, collaborazione, che nel 2008 è stata ratificata da un protocollo di intesa finalizzato agli interventi sui Cetacei spiaggiati lungo le coste della Campania. Nel 2009 la Giunta Regionale della Campania, su richiesta del Settore Veterinario dell’Assessorato alla Sanità, ha decretato la “Costituzione di un Comitato di Coordinamento per l’attuazione del protocollo di intesa per gli interventi in caso di Cetacei e tartarughe spiaggiate” formato dai rappresentanti dei citati enti, delle AA.SS.LL. costiere, della Direzione Marittima di Napoli e dell’A.R.P.A.C. al fine di approvare le linee guida relative alla procedura operativa da adottarsi in caso di intervento per il recupero di carcasse di Cetacei spiaggiati. In totale sono stati raccolti i dati riguardanti 73 esemplari di almeno 6 specie, così suddivisi: 1 Balaenoptera acutorostrata; 4 Balaenoptera physalus; 2 Grampus griseus; 1 Delphinus delphis; 9 Tursiops truncatus; 40 Stenella coeruleoalba; 10 Delfinidi indeterminati e 6 Cetacei indeterminati. Si riporta anche il primo caso di mal rossino diagnosticato in un esemplare di Stenella striata mai segnalato prima per le coste dell’Italia continentale. </div></div></div>

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