Wurtz Maurizio

Wurtz Maurizio
Università degli Studi di Genova | UNIGE

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72
Publications
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Introduction
Skills and Expertise

Publications

Publications (72)
Article
In this publication describe the first photographic match of four killer whales between Iceland, Spain, and Italy, and of one of these individuals between these countries and Lebanon. We note confirmed sightings, as well as observations on health status, foraging strategies, and social behavior of these individuals between June 2013 and February 20...
Article
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This study investigates the bottlenose dolphin (Tursiops truncatus, Montagu 1821) habitat use in the Portofino marine protected area (NW Italy) and adjacent waters, a core area for the dolphins and a highly touristic area in the Mediterranean Sea. A permanent automated real-time passive acoustic monitoring system, able to detect and track dolphins...
Article
Full-text available
The distribution of four top predators in the Tyrrhenian Sea, a sub-basin of the Mediterranean Sea, was investigated by means of random forest regression considering depth, distance from the coast, seafloor slope, and distance from seamounts as habitat descriptors on a 2x2–nautical mile regular grid. RF results are processed to estimate variable im...
Article
CONISMA, CNR and CIRCE, involved Italian research units (RUs) working on cetaceans to join a National Network answering the Marine Strategy Framework Directive (MSFD) requirements by sharing monitoring data. Data obtained during the 2016 monitoring campaigns by 13 RUs are presented here.
Technical Report
Full-text available
This document aims to establish guidelines for inventorying and monitoring Mediterranean deep-sea habitats and marine caves in order to settle the basis for a regional-based assessment. Furthermore, it aims at reviewing the known distribution and main characteristics of these ecosystems. Although the Dark Habitats Action Plan covers entirely dark c...
Technical Report
Full-text available
Although scientific knowledge on dark habitats has increased during the last decades, there is still a significant gap today. The number of human activities and pressures impacting marine habitats has considerably increased throughout the Mediterranean, including deep-sea habitats (e.g. destructive fishing practices such as bottom trawling, oil and...
Conference Paper
Within the Mediterranean Sea, marine traffic is very intense, it can lead to collisions and noise pollution, representing disturbance of feeding activity and causing potential changes in cetacean behaviour as well as injuries and, in the worst scenario, death of the animal. Two fixed acoustic stations were tested as effective tools to protect cetac...
Article
Full-text available
Within the framework of the EU Life+ project named LIFE09 NAT/IT/000190 ARION, a permanent automated real-time passive acoustic monitoring system for the improvement of the conservation status of the transient and resident population of bottlenose dolphin (Tursiops truncatus) has been implemented and installed in the Portofino Marine Protected Area...
Data
Permission to publish Fig 8. (PDF)
Data
Permission to publish Figs 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17. (PDF)
Conference Paper
Full-text available
The WhaleSafe project aim is to detect and track sperm whale to prevent collisions with boats and ships by issuing warning messages in real time to the involved actors. Two buoys with four hydrophones onboard will be installed in Savona area and the collected data will be used to extrapolate the point where the whale should emerge. It is required a...
Conference Paper
Full-text available
The ARION project aim is to protect dolphins and boats, while preserving human activities, mainly preventing collisions. To achieve this goal it is necessary to track both and to signal the presence of the dolphins to possibly any subject operating in the protected area. Two buoys with four hydrophones each, installed in Santa Margherita-Portofino...
Poster
Seminario sulla biologia e la conserrvazione dei mammiferi marini - Università di Pavia CIBRA
Article
The sperm whale is one of only two great whales regularly encountered in the Mediterranean Sea. It was once considered to be quite abundant in some parts of the Mediterranean, but large herds are not reported nowadays and several lines of evidence support the hypothesis that the population is depleted. While no estimate of population size exists fo...
Conference Paper
The ARION main objective is the creation of a virtual corridor for monitoring and surveillance of transient and resident bottlenose dolphins ({Tursiops truncatus). We deployed in the Portofino MPA two detection units, based on a particular type of marine buoy (elastic beacon) each equipped with four hydrophones and an acquisition system which can r...
Article
Full-text available
Abstract - This paper summarizes more than four decades of cetacean research data collected by the Museo Civico di Storia Naturale di Milano and, between 1986 and 2003, by the Centro Studi Cetacei of the Società Italiana di Scienze Naturali. It is the result of the collaboration among scientists of several Italian museums. A detailed analysis conce...
Article
The Pelagos Sanctuary is the largest marine protected area of the Mediterranean Sea (87 500 km2), and is located in the north-west part of the basin. The presence of the bottlenose dolphin in this area is well documented but its distribution and abundance are not well known.The present study collected and analysed data from 10 different research gr...
Article
Full-text available
Errors in analysis using natural marks have been recognised since the early development of mark-recapture techniques. In this nine-year study, the mark types present on Cuvier's beaked whales Ziphius cavirostris in the Mediterranean Sea were categorised in order to assess the reliability of natural marks for long-term photo-identification studies....
Article
Full-text available
The Ligurian Sea is a deep basin in the northernmost sector of the western Mediterranean which shows peculiar hydrodynamic and meteo-oceanographic features. The coasts of the Ligurian Sea are among the most urbanised and industrialised along the Italian coastline: the main causes of disturbance being littoral urban development and harbour activitie...
Article
The morphology and histomorphology of the tongue and the histochemistry of the lingual glands of eight specimens from four species of Ligurian Sea odontocetes (Stenella coeruleoalba, Tursiops truncatus, Grampus griseus, and Ziphius cavirostris) were studied. The shape of tongues and the appearance of their dorsal surfaces differed between species....
Article
The capture of a single specimen of the dog snapper Lutjanus jocu from the Ligurian Sea (north-west Mediterranean Sea) in November 2005 is reported. This finding constitutes the first record of this species from the Mediterranean Sea.
Conference Paper
Full-text available
The establishment of the international Sanctuary Pelagos, by France, Principality of Monaco and Italy on 25th November 1999, is considered as a catalyser for the scientific research on cetaceans carried out in the north-western and central Mediterranean area. From the Italian side, in spite of the limited availability of financial resources, there...
Conference Paper
Full-text available
The 2009 acoustic "scan" realized inside the Pelagos Sanctuary aimed to get information on the sperm whale distribution. Results indicate some aggregations and specifically close to hotspots determined by a previous study. This information can be used to concentrate mitigation effort needed for Pelagos Sanctuary's efficiency. Introduction The estab...
Conference Paper
Full-text available
Il Dipartimento di Biologia dell’Università di Genova e la Fondazione di Ricerca CIMA sono impegnate dal 2004 nello studio e nel monitoraggio delle popolazioni di cetacei presenti in Mar Liguree nel Tirreno settentrionale. Ad oggi sono state effettuate 185 campagne in mare giornaliere a bordo dell’imbarcazione da ricerca Menkab, pari a circa 12.000...
Article
Full-text available
Fin whales (Balaenoptera physalus) are the only mysticete regularly found in the Mediterranean Sea. Its exceptional high abundance during the summer period in the north-western Mediterranean is essentially due to productive waters, but outside of this spatio-temporal window its distribution still remains quite unknown. This paper investigates the d...
Article
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Studies on differences in external morphology and pigmentation patterns were historically carried out using stranded individuals or opportunistic sightings; few studies have involved sampling systematically free-ranging individuals. In order to investigate and describe main pigmentation characteristics, outlining ‘typical’ regional pigmentations, t...
Article
Full-text available
This study used Monte Carlo methods to generate simulations that considered the effort distribution to determine the locations of significant aggregations of cetacean sightings inside the northern Pelagos Sanctuary (north-western Mediterranean Sea). For three years, monitoring has been conducted from five motor vessels covering about 30,050 km. The...
Data
Please note that the English has not been revised. Each contributor is responsible for the accuracy of her/his language, data and released information. For any clarification, please, refer to each of the indicated persons/organisations. SC/62/ProgRepItaly
Conference Paper
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Anthropogenic issues for cetacean protection especially along the Ligurian coast where fishing or maritime traffic are intense lead to propose mitigation alternatives. In 2007, numerous fin whales have been sighted in shallow waters in the North-western Mediterranean and at least two juveniles died entangled (6.5 m-long and 8 m-long) due to lack of...
Conference Paper
Full-text available
This work aimed to estimate the size of the cuvier’s beaked whale population using data collected during 7 years of cetacean survey, carried out in the ligurian sea. The data ollected from 2004 to 2005 lead to an estimation of 94±23 (using right sides) and 85±18 (using left sides) different animals. Keywords : Cetacea, Ligurian Sea, Population Dyna...
Data
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This report summarises information obtained from: Name of agency/institute Abbreviation (use in rest of report) Contact e-mail address Accademia del Leviatano onlus AdL antonella.arcangeli@apat.it Associazione Battibaleno BB info@battibaleno.it
Article
Full-text available
Cuvier's beaked whale is a poorly-known species. It has been considered common since 1980 in the Pelagos Sanctuary (north-western Mediterranean Sea), but it has hardly been studied, chiefly due to difficulties in sighting. Stranding data indicates that the beaked whale is present all along the Ligurian coast. As with any deep-diving odontocete, Cuv...
Article
Full-text available
Whale-watching activity performed in the Ligurian Sea (off Imperia-Savona) from 2004 to 2006 is analysed to access to the sighting probabilities of fin whale on previous sighting positions, during 7 days time-window. On 62 km 2 area, 15 % of the fin whale sightings occurred near a previous sighting position.
Conference Paper
Full-text available
The northern part of the Pelagos Sanctuary it is inhabited by a population of ~90 Cuvier's beaked whales (Ziphius cavirostris G.Cuvier, 1823) [1] but the social structure of this population, defined as the pattern of relationship between individuals, is still unknown. The social structure of a population plays a key role in many aspects of ecology...
Article
Full-text available
A herd of female sperm whales with calves was observed for the first time off the coast of Monaco in mid December 2001. The herd was composed of more than ten animals: the adults were foraging; the calves were resting. The adult whales measured less than 12 m in length and the calves were estimated to be 5 m. This occurrence is discussed.
Article
Full-text available
The Ligurian Sea is characterized by the abundant presence of various cetacean species, such as fin whale (Balaenoptera physalus), striped dolphin (Stenella coeruleoalba), Cuvier's beaked whale (Ziphius cavirostris) and sperm whale (Physeter catodon). For this reason, this area has been chosen as an international sanctuary for marine mammal protect...
Conference Paper
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Résumé Ces dernières années, de nombreuses enquêtes ont été réalisées sur la présence et sur les échouages de Ziphius cavirostris,en M er Ligu-re. La cause des échouages, dans la période 1900-1966, n'a pas été élucidée. Ce présent travail tente de combler cette lacune. Huit nou-veaux échouages, avec au minimum 24 spécimens, ont été mis à jour. L'en...
Article
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Assessment of the special artigianal fisheries in the Liguria sea Abstract The impact of the artigiana1 fisheries of the Gymnammodytes cicerel[us have been studied in western coast of Ligurian sea, of Noli Cupe. The selectiviv and the eflect on Posidonia beds o/ the small smesc sized beach seine have been investigated. Introduzione La pesca profess...
Article
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A young female of the rarely seen pelagic octopod Ocythoe tuberculata (Rafinesque, 1814) (Argonautoidea) survived for two days in captivity. It possessed a swimbladder and controlled its buoyancy. When swimming, the dorso-lateral corners of the mantle aperture were converted into dirigible structures (`accessory funnels'), which jetted water from t...
Article
Full-text available
The stomachsof 23 striped dolphins (Stenella coeruleoalba Meyen, 1833, Cetacea), stranded along the Ligurian coast (western Mediterranean Sea), contained 32 species of cephalopods, crustaceans and fishes, totalling an estimated 2,723 prey specimens representing about 36 kg in weight. Cephalopods and bony fishes were equally important in the diet (5...
Article
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Cephalopod remains from the stomachs of a Risso's dolphin (Grampus griseus Cuvier, 1812, Cetacea) entangled in a fishing net off the Ligurian coast (central Mediterranean Sea) include squids Ancistroteuthis lichtensteini, Histioteuthis bonnellii, H. reversa and Todarodes sagittatus and the sepiolid Heteroteuthis dispar. All these cephalopods live i...
Article
Distribution and abundance of the horned octopus Eledone cirrhosa in the Tyrrhenian Sea are described on the basis of stratified-random bottom trawl surveys in spring and summer of the years 1985–1987. Specimens were caught between 25 and 630 m depth (higher densities between 50 and 200 m depth); mature males were found to prefer deeper bottoms tha...
Conference Paper
Full-text available
The crustaceans play an important role in the trophic webs of several marine ecosystems including a number of fish species and marine mammals. We present an illustrated sheet of the most common remains in the stomach contents of odontocetes and mysticetes in order to aid future identification of crustaceans as food item of these cetaceans. During t...