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On the great white shark, Carcharodon carcharias (Linnaeus, 1758), preserved in the Museum of Zoology in Lausanne.

Authors:
  • Shark Museum - Simon's Town - South Africa
Mar. Life 2003 - Vol. 13 (1-2) : 53-59
On the Great White Shark, Carcharodon carcharias
(Linnaeus, 1758),
preserved in the Museum of Zoology in Lausanne
À propos du grand requin blanc, Carcharodon carcharias (Linnaeus, 1758),
conservé au Musée zoologique de Lausanne
Alessandro De Maddalena*, Olivier Glaizot**, Guy Oliver***
* Italian Great White Shark Data Bank (Banca Dati Italiana Squalo Bianco), via L. Ariosto 4, I-20l45 Milano, Italy.
a-demaddalena@tiscali.it
**Musée Cantonal de Zoologie, case postale 448, CH-1000 Lausanne 17, Switzerland.
***Université de Perpignan, Laboratoire de Biologie Physico-Chimique, 52 avenue de Villeneuve,
F-66860 Perpignan Cédex, France.
Key words: Great White Shark, Carcharodon carcharias, morphometry, Mediterranean Sea,
Lausanne Museum of Zoology.
Mots clés: grand requin blanc, Carcharodon carcharias, morphométrie, Mer Méditerranée,
Musée de Zoologie de Lausanne
ABSTRACT
De Maddalena, A., O. Glaizot, G. Oliver - On the great white shark, Carcharodon carcharias (Linnaeus,
1758), preserved in the Museum of Zoology in Lausanne. Mar. Life, 13 (1-2): 53-59.
The cast of a 5.89 m female Great White Shark Carcharodon carcharias preserved in the Museum of Zoology in
Lausanne (Switzerland), is the largest world-wide that has been reconstructed directly from a whole specimen. This
specimen, captured off Sète, France (Mediterranean Sea), on 13
th
October 1956, is one of the three largest specimens
ever measured accurately. Description and morphometrics of the shark mould are given.
RÉSUMÉ
De Maddalena, A., O. Glaizot, G. Oliver - [À propos du grand requin blanc, Carcharodon carcharias
(Linnaeus, 1758), conservé au Musée zoologique de Lausanne ]. Mar. Life, 13 (1-2): 53-59.
Le moulage d'un spécimen femelle de 5.89 mètres d'un grand requin blanc (Carcharodon carcharias) est conservé au
Musée de Zoologie de Lausanne (Suisse). C'est actuellement le plus grand spécimen de cette espèce directement moulé
à partir d'un individu entier. Ce dernier fût capturé le 13 octobre 1956 au large de Sète, en France (Mer Méditerranée)
et il est l'un des trois plus grands spécimens mesurés de manière précise. La description et la morphométrie de ce
requin sont données.
INTRODUCTION
The maximum size of the great white
shark, Carcharodon carcharias (Linnaeus, 1758),
has long been debated and remains a subject of
controversy. It is assumed that this species can
reach at least 6 metres in total length. Further,
many larger specimens are mentioned in the
literature, but almost ever without verifiable
evidence of their real size (Ellis & McCosker,
1991). De Maddalena et al. (2001) analysed
photographic evidences of the largest white
sharks caught in the Mediterranean Sea and they
concluded that C. carcharias can reach at least
640-660 cm in total length and very probably
even more.
Unfortunately, specimens around 6 metres
in length have been measured accurately only
very rarely. Irrefutable evidence of very large
specimens, represented by complete taxidermied
specimens or moulds prepared directly from fresh
specimens, are very rare. The primarily cause of
this paucity of data is the logistical difficulties
presented by the preservation and preparation of
large sharks. Methods of estimating the length of
sharks from which skeletal parts are usually
preserved - in particular teeth, jaws and
vertebrae - have been investigated by various
authors (Randall, 1973, 1987; Gottfried et al.,
1996; Mollet et al., 1996). However, the best and
only irrefutable way to obtain the length of a
large white shark remains accurate measurement
directly from the complete specimen, if possible
following the standards presented in Compagno
(1984) and Mollet et al. (1996).
For the aforementioned reasons, the
existence of a complete mould obtained directly
from a 5.89 metres great white shark caught in
the Mediterranean Sea, preserved in the Museum
of Zoology in Lausanne (MZL) is of particular
interest.
MATERIALS AND METHODS
On 13
th
October 1956, a large female white
shark was caught off Sète, in the "Golfe du Lion",
off the French coast of the Mediterranean Sea.
The following details about the capture were
reported by the local newspaper, Midi libre. The
shark was caught in the early morning 3 miles
(4.8 kilometres) offshore from Maguelone
(Hérault, France). It was trapped in a tuna drifnet
of the fishing vessel, "Rosina-Raphael". The shark
was landed in Sète at about 9 o'clock. It was
reported to measure 5.89 metres in length and
have a maximum girth of 4 metres. The liver
alone weighed 360 kg and the total weight was
estimated to be about 2 tonnes. Its stomach
contained remains of 2 unidentified dolphins,
each measuring about 1.80 metres (Anonymous,
1956). Some good photographs of the fresh
specimen were taken after its capture
(unfortunately, it has not been possible to obtain
permission to reproduce it in this work). The
shark was examined by M. Euzet of the Marine
Biological Station of Sète and M. Baer of the
University of Neuchatel, Switzerland. Thanks to
the interest of the latter, the shark was acquired
by the Museum of Zoology in Lausanne (Musée
Cantonal de Zoologie de Lausanne), Switzerland.
Here a good mould was prepared by taxidermist
Eugène Küttel. The model features the original
fins and teeth, while the rest has been
reconstructed via casts from the body of the
original specimen (Fig. 1).
Detailed morphometric measurements
were made by Manuel Fischer of the great white
shark mould at MZL, following the methods of
Compagno (1984), adding measurement of total
length with the caudal fin in a 'natural' position,
TLn, as indicated in Mollet et al. (1996). Since the
mould also features the specimen's original teeth,
the largest upper anterior tooth was measured
following Mollet et al. (1996), but - since the
tooth bases were not visible - only the
measurements of the enamel (smaller enamel
height UAE1, greater enamel height UAE2,
enamel width UAW) were considered.
Regarding the two ways in which the total
length was measured, since the mould has been
prepared with the caudal fin in a 'natural'
position, the total length with the caudal fin in the
natural position (TLn) has been measured
directly, while the total length with the caudal fin
in the depressed position (TOT) has been
obtained by adding the precaudal length (PRC) to
the dorsal caudal margin (CDM).
Figure 1 - The cast of the 5.89 metre Great White Shark caught off Sète, France, in 1956, featuring
the original fins and teeth, on display at the Museum of Zoology in Lausanne (Photo by Guy Oliver).
/ Le moulage d'un grand requin blanc de 5.89 m capturé au large de Sète, France, en 1956,
exposé au Musée de Zoologie de Lausanne. Les ailerons et les dents sont d'origine (Photo Guy
Oliver).
RESULTS
Although the mould created by Küttel
presents some deformations of the snout, lower
jaw, and lower surfaces, it is evident that the
taxidermist skillfully executed an accurate
representation of the original specimen on which
he had the rare opportunity to work. The
deformations, particularly of the head, can be
attributed readily to the partial deterioration to
which the shark was undoubtely subjected after
its death, Moreover, these deformities were very
probably accentuated by the specimen's storage
during transport to Lausanne. With respect to the
observable deformations of the lower parts of the
mould, it must be borne in mind that the
taxidermist received the shark after it was
already gutted, with the belly cut and
consequently deformed.
The morphometric measurements taken
from the mould of the shark and on the largest of
its upper anterior teeth are reported in Table I. It
must be considered that some of the reported
measurements present some differences with
respect to the proportions of the original
specimen, due to the observed deformations of
the mould. Authors compared morphometric
measurements taken from this specimen to
measurements taken from a well prepared 4.0 m
TOT taxidermied white shark preserved in the
Museum of Natural History in Genova, Italy, with
catalogue number C.E. 27517 (De Maddalena,
2000 b) and the proportions resulted very close.
The 5.83 m value obtained for TOT confirm
the correctness of the length of 5.89 m reported
for the fresh-caught specimen in Anonymous
(1956). The small (6 cm) difference in TOT is
attributable to various factors, such as differences
in the way measurements were taken, artefacts
of preparation of the mould, the deformations
noted, and differences in position of the specimen
while the measurements were taken.
The specimen discussed in this work has
been reported previously in de Beaumont (1957),
indicating an approximate length of 5 m and a
weight of “at least 1.5 tonnes”, and Quignard et
al. (1962), but the length reported by this source
(490 cm) was erroneous; moreover it has been
cited in Séret (1996). The specimen cited in
Fergusson (1996) dated 1976 and reportedly but
unconfirmedly measuring 4.5 metres is almost
certainly based on the same specimen that is the
object of this work, reported with an erroneous
date and length.
This specimen is not the only white shark
recorded from Sète, as three other specimens
have been caught in the same area: a specimen
about 4 m long was captured in August 1875, a
2.42 m specimen caught in 1876 were reported
by Moreau, 1881; and a female specimen
reportedly having a length of 6 m was caught on
January 9
th
1991 (Anonymous, 1991; Quignard &
Raibaut, 1993; Séret, 1996). On the basis of
photographic evidence, De Maddalena et al.
(2001) estimate the latter specimen measured
5.9 m TOT. This specimen was bought by a
wholesale fishmonger in Sète, offered for sale in
the Rungis market, and bought by a supermarket
in Montargis (Licciardi, Azais, personal
communication). Touret (1992) reported the
same history for a specimen caught in Antibes
during the same month, but according to F.
Calviera, a fisherman in Antibes since 1956, it
was not a great white shark caught in this
harbour. Consequently it seems that only one
great white shark has been caught in Sète during
January 1991.
DISCUSSION
Worldwide, two other comparably large
white sharks have been preserved complete: a
5.22 m TLn female caught in Kvamer, Croatia, on
May 29
th
1906, preserved via taxidermy in the
Trieste Natural History Museum, Italy (De
Maddalena, 2000 a, 2000 b), and a 5.3 m female
caught near Cananéia, Brazil, on December 8th
1992 and preserved via taxidermy in the Victor
Sadowsky Museum in Cananéia (Arfelli, Amorim,
1993; Mollet et al., 1996; Mollet, personal
communication). The shark described in the
present work, of which a mould is preserved in
the Museum of Zoology in Lausanne, surpasses
the length of both these specimens and so can be
considered the largest of any complete white
shark presently preserved.
Some reliable cases of white sharks
surpassing the size of the Lausanne specimen are
reported in literature, but most of these were not
measured accurately and therefore their claimed
sizes are estimates and consequently cannot be
regarded as precise. A large specimen caught in
February 1839 off Civitanova, Italy, was reported
measuring approximately 6 m in length and was
later estimated to be 6.02 m TL, but it is not
clear if it was ever accurately measured (De
Maddalena, 1998). An enormous specimen
caught off Piombino, Italy, in 1886 was reported
measuring approximately 8-9 m (Biagi, 1995),
but at our knowledge it was never measured. A
specimen caught off Enfola, Italy, on August 12th
1938 was estimated to be 5.97-6.13 m TOT, but
was never measured (De Maddalena et al.,
2001). An approximately 6.408 m female was
reportedly caught off Cojimar, Cuba, in 1945
(Bigelow, Schroeder, 1948; Guitart-Manday,
Milera, 1974): even if the contestation of this
case presented by Randall (1987) is not
acceptable (De Maddalena et al., 2001), it is not
clear if the specimen in question was ever
accurately measured. A male caught off Camogli,
Italy, on March 16
th
1954 was reported to
measure 7 m in Tortonese (1965) but its length
was contested by Fergusson (1996). A female
caught off Ganzirri, Italy, on June 19
th
1961 was
estimated to be 6.66 m TOT, but was never
measured (De Maddalena et al., 2001). Another
specimen caught off Ganzirri, Italy, on March 9th
1965 was reported measuring 6.20 m in length
(Berdar, Riccobono, 1986) but Celona et al.
(2001) hypothesised that it was measured over
the curve of the body. A specimen caught off
Isola la Formica, Italy, in May 1974 was reported
measuring approximately 6.2-6.4 m (and later
Table I - Measurements of the cast of a large great white shark and its largest upper anterior tooth, on exhibition
at the Museum of Zoology in Lausanne (following teminology and parameters of Compagno, 1984, and Mollet et al.,
1996). All measurements are given in centimetres. / Mesures du moulage du grand requin blanc exposé au Musée
de Lausanne, ainsi que des plus grandes dents de la mâchoire supérieure (selon la terminologie de Compagno,
1984, et Mollet et al., 1996). Toutes les mesures sont données en centimètres.
Abbreviation Measurement cm %TOT
TOT total length (caudal fin in depressed position) 583 100.00 %
TLn total length (caudal fin in natural position) 565 96.91 %
FOR fork length 510 87.48 %
PRC precaudal length 458 78.56 %
PD2 pre-second dorsal length 400 68.61 %
PD1 pre-first dorsal length 220 37.74 %
HDL head length 152 26.07 %
PG1 prebranchial length 122 20.93 %
POB preorbital length 32 5.49 %
PP1 prepectoral length 145 24.87 %
PP2 prepelvic length 330 56.60 %
SVL snout-vent length 340 58.32 %
PAL preanal length 400 68.61 %
IDS interdorsal space 130 22.30 %
DCS dorsal-caudal space 55 9.43 %
PPS pectoral-pelvic space 155 26.59 %
PAS pelvic-anal space 50 8.58 %
ACS anal-caudal space 50 8.58 %
PCA pelvic-caudal space 100 17.15 %
VCL vent-caudal length 225 38.59 %
PRN prenarial length 22 3.77 %
POR preoral length 35 6.00 %
ING intergill length 40 6.86 %
GS1 first gill slit height 55 9.43 %
GS2 second gill slit height 58 9.95 %
GS3 third gill slit height 60 10.29 %
GS4 fourth gill slit height 60 10.29 %
GS5 fifth gill slit height 60 10.29 %
P1A pectoral anterior margin 105 18.01 %
P1B pectoral base 45 7.72 %
P1I pectoral inner margin 25 4.29 %
P1P pectoral posterior margin 85 14.58 %
P1H pectoral height 95 16.29 %
CDM dorsal caudal margin 125 21.44 %
CPV preventral caudal margin 80 13.72 %
CPU upper postventral caudal margin 90 15.44 %
CPL lower postventral caudal margin 55 9.43 %
CFW caudal fork width 50 8.58 %
CFL caudal fork length 55 9.43 %
CST subterminal caudal margin 8 1.37 %
CSW subterminal caudal margin 15 2.57 %
CTR terminal caudal margin 25 4.29 %
CTL terminal caudal lobe 30 5.15 %
Abbreviation Measurement cm %TOT
D1L first dorsal length 62 10.63 %
D1A first dorsal anterior margin 70 12.01 %
D1B first dorsal base 49 8.40 %
D1H first dorsal height 60 10.29 %
D1I first dorsal inner margin 13 2.23 %
D1P first dorsal posterior margin 60 10.29 %
D2L second dorsal length 13 2.23 %
D2A second dorsal anterior margin 14 2.40 %
D2B second dorsal base 5 0.86 %
D2H second dorsal height 10 1.71 %
D2I second dorsal inner margin 8 1.37 %
D2P second dorsal posterior margin 8 1.37 %
P2L pelvic length 45 7.72 %
P2A pelvic anterior margin 25 4.29 %
P2B pelvic base 30 5.15 %
P2H pelvic height 20 3.43 %
P2I pelvic inner margin length 15 2.57 %
P2P pelvic posterior margin length 40 6.86 %
ANL anal length 18 3.09 %
ANA anal anterior margin 15 2.57 %
ANB anal base 10 1.71 %
ANH anal height 8 1.37 %
ANI anal inner margin 8 1.37 %
ANP anal posterior margin 10 1.71 %
HDH head height 100 17.15 %
TRH trunk height 120 20.58 %
ABH abdomen height 100 17.15 %
TAH tail height 55 9.43 %
CPH caudal peduncle height 15 2.57 %
DPO first dorsal midpoint - pelvic origin 100 17.15 %
PDI pelvic midpoint - first dorsal insertion 75 12.86 %
PDO pelvic midpoint - second dorsal origin 40 6.86 %
DAO second dorsal origin - anal origin 20 3.43 %
DAI second dorsal insertion - anal insertion 20 3.43 %
MOL mouth length 30 5.15 %
MOW mouth width 50 8.58 %
INW internarial space 30 5.15 %
INO interorbital space 30 5.15 %
HDW head width 95 16.29 %
TRW trunk width 90 15.44 %
ABW abdomen width 85 14.58 %
TAW tail width 45 7.72 %
CPW caudal peduncle width 25 4.29 %
GIR girth 355 60.89 %
UAE1 largest upper anterior tooth enamel height 4 0.69 %
UAE2 largest upper anterior tooth enamel height 4,6 0.79 %
UAW largest upper anterior tooth enamel width 4,3 0.74 %
estimated to be 5.94 m TOT), but it is not known
whether the length was measured as TOT or as
TLn (De Maddalena et al., 2001). A male caught
off Gallipoli, Italy, on September 18
th
1979 was
reported measuring 6.20 m in length (Piccinno,
Piccinno, 1979) but it is not known whether the
length was measured in a straight line or over the
curve of the body. A specimen caught off Dakar,
Senegal, in 1982, was estimated to be longer
than 8 m, but was never accurately measured
(Barrull, Mate, 2001; De Maddalena et al., 2001).
A female white shark caught on August 4
th
1983
off Alberton, Prince Edward Island, Canada,
reported to measure 6.096 m in Mollet et al.
(1996) was, according to Ellis, McCosker (1991)
never measured. A female caught in Gaansbai,
South Africa, on January 17
th
1987, reportedly
5.67-6.00 m TOT (Gottfried et al., 1996; Mollet
et al., 1996), was likewise never measured
accurately (Cliff, Ferreira, Mollet, personal
communication). A female specimen caught on
April 1st 1987 near Kangaroo Island, Australia,
was estimated to be longer than 6.9 m, but was
never measured (Cappo, 1988; Mollet et al.,
1996). Another female white shark captured in
Filfla, Malta, on April 17
th
1987, previously
claimed to be accurately measured and
reportedly 7.14 m in length (Abela, 1989), has
since fallen under serious doubt (Mollet et al.,
1996; Fergusson, 1998); later it was estimated
to be 6.68-6.81 m TOT, but it remains not clear if
it was ever accurately measured (De Maddalena
et al., 2001). A female caught off Malindi, Kenya,
on 16
th
July 1996, reportedly about 6.4 m in
length and estimated 5.7 m TLn from vertebral
size, was never measured (Cliff et al., 2000). For
a 5.80 m female caught in Favignana, ltaly, on
April 24th 1980 (De Maddalena, 2002; Cataldo,
personal communication), it is not known whether
the length was measured as TOT or as TLn. On
the basis of photographic evidence, the authors
deem that the measurement was TOT.
In conclusion, it seems that only two white
sharks that were accurately measured surpass
the length of the specimen that is the object of
this study. These are the following: a 5.944 m
female captured off Ledge Point, Australia on
March 22
nd
1984 (Randall, 1987; Mollet et al.,
1996), and a female caught in Bunbury,
Australia, on July 2
nd
1991, that measured 5.74 m
TLn (Mollet et al., 1996) and 5.29 fork length
(FOR) (Hubbell, personal communication); the
5.54 m TLn reported for this specimen by Hubbell
(1996) is very probably erroneous.
ACKNOWLEDGEMENTS
Very special thanks to Rick Martin, who
very kindly edited the English text of this work,
and to Manuel Fischer for the help in taking the
measurements on the shark. Thanks also to
Henry Mollet, Jeff Seigel, Gioacchino Cataldo,
Sarah Fowler, Henri Cappetta, Gordon Hubbell,
Geremy Cliff, Craig Ferreira, Louis Euzet, Serge
Licciardi, Claude Azais and Francis Calviera for
the information furnished on large white shark
specimens. A particular thanks from Alessandro
De Maddalena goes to Alessandra Baldi.
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Touret F., 1992 - Depuis 1963, date du boom
balnéaire, les attaques de requins ne sont
plus officiellement recensées. New Look,
92 : 74-76.
Received January 2002; accepted December 2002.
Reçu janvier 2002; accepté en décembre 2002.
... This possible range of masses seems likely given that when comparing the size of D. terrelli to a large individual of Carcharodon carcharias (e.g., MZL 23981, estimated weight ~2000 kg; see Figure 13 below), Dunkleosteus is much shorter in length despite having similar thoracic dimensions, and thus is expected to be less massive. Based on this, it seems the largest individuals of Dunkleosteus terrelli were smaller than the largest individuals of Carcharodon carcharias, the latter of which can attain weights of 2000-2500 kg [165][166][167] in large females. ...
... Figure 13. Reconstruction of the largest known specimen of Dunkleosteus terrelli (CMNH 5936, proportions primarily from the slightly smaller but more complete CMNH 5678), compared to one of the largest reliably measured specimens of Carcharodon carcharias (MZL 23981; [166]). A 2 m tall human for scale (from NASA). ...
... Based on these results, there is no strong evidence for vertebrates greater than 5 m in length prior to the Carboniferous, and the mode and tempo for the "explosive" expansion in vertebrate size during the Devonian needs to be reassessed. [11,12,15,16,22,39,69,93,95,115,116,118,121,[123][124][125][133][134][135]140,150,162,166,208,242,243,[258][259][260][261][262][263][264][265][266][267][268][269][270][271][272]. Supplementary File S4. ...
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Dunkleosteus terrelli, an arthrodire placoderm, is one of the most widely recognized fossil vertebrates due to its large size and status as one of the earliest vertebrate apex predators. However, the exact size of this taxon is unclear due to its head and thoracic armor being the only elements of its body regularly preserved in the fossil record. Lengths of 5–10 m are commonly cited, but these estimates are not based on rigorous statistical analysis. Here, I estimate the body size of D. terrelli using a new metric, orbit-opercular length, and a large dataset of arthrodires and extant fishes (3169 observations, 972 species). Orbit-opercular length strongly correlates with total length in fishes (r2 = 0.947, PEcf = 17.55%), and accurately predicts body size in arthrodires known from complete remains. Applying this method to Dunkleosteus terrelli results in much smaller sizes than previous studies: 3.4 m for typical adults (CMNH 5768) with the largest known individuals (CMNH 5936) reaching ~4.1 m. Arthrodires have a short, deep, and cylindrical body plan, distinctly different from either actinopterygians or elasmobranchs. Large arthrodires (Dunkleosteus, Titanichthys) were much smaller than previously thought and vertebrates likely did not reach sizes of 5 m or greater until the Carboniferous.
... Since 1996 the Italian Great White Shark Data Bank (Banca Dati Italiana Squalo Bianco) has collected a substantial amount of information regarding historical and recent records of the great white shark from the Mediterranean Sea. This data includes information on size, distribution, habitat, behaviour, reproduction, diet, fisheries and attacks on humans (DE MADDALENA, 1998, 2000a, 2000b, 2002, 2005, 2006, 2007CELONA et al., 2001CELONA et al., , 2006DE MADDALENA et al., 2001, 2003GALAZ & DE MADDALENA, 2004). In total, records of 489 white sharks from the Mediterranean area have been collected so far. ...
... com.); a 600 cm female (also estimated at 591 cm TOT from a photograph), caught on January 9, 1991, off Sète V. Maliet, pers. com.); and a 589 cm TOT female caught on October 13, 1956, off Sète (DE MADDALENA et al., 2003). The cast of the 589 cm female white shark preserved in the Musée Cantonal de Zoologie de Lausanne, Switzerland, is the largest world-wide that has been reconstructed directly from a whole specimen. ...
... The cast of the 589 cm female white shark preserved in the Musée Cantonal de Zoologie de Lausanne, Switzerland, is the largest world-wide that has been reconstructed directly from a whole specimen. This is also one of the largest specimens ever measured accurately (DE MADDALENA et al., 2003). ...
... We preferred the two bear species, since there is a constant scientific debate regarding the largest member of the group, between the polar bear and several brown bear subspecies, especially grizzly bear, Kodiak bear (Ursus arctos middendorffi) and Eurasian brown bear (Ursus arctos arctos) (Soibelzon et al., 2011). We have taken into account several large aquatic predators, such as the great white shark (Charcharodon charcharis) and the tiger shark (Galeocerdo cuviere)the two largest oceanic predatory fish (De Maddalena et al., 2003;Meyer et al., 2014), respectively the European catfish -Europe's largest predatory freshwater fish (Bouletreau & Santoul, 2016), and the saltwater crocodilethe world's largest living reptile (Britton et al., 2012). In case of mega herbivores, we have selected some of the largest land mammalsthe Indian elephant (Elephas maximus), the white rhinoceros (Cerathotherium simum), and the common hippopotamus (Hippopotamus amphibious) (Owen-Smith, 1988). ...
... The great white shark has been the most intensively studied mega fauna species in terms of maximum size reached by giant specimens. The most significant individuals were several females caught in the Mediterranean Sea near the shores of Jabuka Island, Croatia, in the year 2003 (total length: 570 cm) (Soldo & Dulcic, 2005), and Sette, France, in the year 1956 (total length: 589 cm) (De Maddalena et al., 2003), respectively in the Atlantic Ocean, near Bom Abrigo Island, Brazil, in the year 1992 (total length: 530 cm) (Amorim et al., 2017). The specimen from Brazil was the only one accurately measured. ...
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Large and powerful animals represent a source of fear and fascination for humans and influence the evolution of culture, civilization and science. Although the maximum size reached by such beasts has been the subject of intense controversy, little scientific interest has been given to distinguish reality from fiction. Therefore, the goal of our study was to identify the largest specimens of the contemporary mega fauna. In order to do so, we have a) selected the most representative species and identified the largest specimens through a scientific literature synthesis, b) reconstructed their distinctive physical features through detailed handmade drawings, and c) analyzed their location in relation to the distribution of reserves and intact ecosystems. Our results indicate that the maximum size reached by large water predators, such as sharks and crocodiles, has been much more documented compared to large land carnivores and herbivores. Almost all of the exceptionally large specimens identified were located in protected areas. In several cases, such as the Indian elephant (Elephas maximus) and the saltwater crocodile (Crocodylus porosus), the largest individuals have been identified in the last couple of decades. The results represent a true statement concerning the importance of preserving mega fauna species, and reveal that, despite increasing human population and pressure over the natural environment, the beast of the animal world can still survive in modern times, due to the conservation of large wild habitats through networks of protected areas.
... Exaggerated claims of extant white sharks as long as 12 m or more have long been debunked [52], and the same can be said for an allegedly 6.4-m-long specimen of C. carcharias that was taken around 1943 in Cuba [53,54]. Thus, the largest individuals of C. carcharias to have ever been reliably measured account for total length values of 594 cm (a female from Ledge Point, Australia; [53]) and 589 cm (a female from the Gulf of Lion, Mediterranean France; [55]). A reappraisal of the photographic evidence of the largest white sharks captured in the Mediterranean Sea led De Maddalena et al. [56] to infer that "C. ...
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The white shark, Carcharodon carcharias, is the main top predator of the present-day Mediter-ranean Sea. The deep past of C. carcharias in the Mediterranean is witnessed by a rather conspicuous, mostly Pliocene fossil record. Here, we provide a synthesis of the palaeobiology and palaeoecology of the Mediterranean white sharks. Phenetically modern white shark teeth first appeared around the Miocene-Pliocene transition in the Pacific, and soon after in the Mediterranean. Molecular phyloge-netic analyses support an origin of the Mediterranean white shark population from the dispersal of Australian/Pacific palaeopopulations, which may have occurred through the Central American Sea-way. Tooth dimensions suggest that the Mediterranean white sharks could have grown up to about 7 m total length during the Pliocene. A richer-than-today marine mammal fauna was likely pivotal in supporting the Mediterranean white sharks through the Pliocene and most of the Quaternary. White sharks have seemingly become more common as other macropredators declined and disappeared, notwithstanding the concurrent demise of many potential prey items in the context of the latest Pliocene and Quaternary climatic and environmental perturbations of the Mediterranean region. The overall generalist trophic habits of C. carcharias were likely crucial for securing ecological success in the highly variable Mediterranean scenario by allowing the transition to a mostly piscivorous diet as the regional marine mammal fauna shrank.
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The size of Dunkleosteus and other late Devonian arthrodire placoderms has been a persistent problem in paleontology. The bony head and thoracic armor of these animals are typically the only elements preserved in the fossil record, with the rest of the body being lost during fossilization. Accurate length estimates of arthrodires are critical for reconstructing the paleobiology of these taxa and Devonian paleoecology more generally. Lengths of 5.3–8.8 m were proposed for Dunkleosteus based on allometric relationships between upper jaw perimeter and total length in extant large-bodied sharks. However, these methods were not statistically evaluated to determine if allometric relationships between body size and mouth size in sharks reliably predicted size in arthrodires. Several smaller arthrodire taxa are known from relatively complete remains, and can be used as independent case studies to test the accuracy of these methods. Results Length estimates for Dunkleosteus are evaluated through an examination of mouth proportions in complete arthrodires and fishes more generally. Currently accepted lengths of 5.3–8.8 m for D. terrelli are mathematically and biologically unlikely for three major reasons: (1) Arthrodires have larger mouths than sharks at similar body sizes. (2) upper jaw perimeter and mouth width produce extreme overestimates of body size (at least twice the actual value) in arthrodires known from complete remains. (3) Reconstructing Dunkleosteus using lengths predicted by upper jaw perimeter results in highly unusual body proportions, including extremely small, shrunken heads and hyper-anguilliform body plans, not seen in complete arthrodires or fishes more generally. Conclusions Length estimates for arthrodires based on the mouth dimensions of extant sharks are not reliable. Arthrodires have proportionally larger mouths than sharks, more similar to catfishes (Siluriformes). The disproportionately large mouths of arthrodires suggest these animals may have consumed larger prey relative to their body size than extant macropredatory sharks, and thus the paleobiology and paleoecology of these two groups may not have been exactly analogous within their respective ecosystems.
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När hajens vita buk öppnades påträffades ett huvudlöst lik. Den huvudlösa mannen var en soldat. År 1543 beskrev den franske läkaren Guillaume Rondelet en haj av enorm storlek. Hajen beskrevs under namnet Lamia. Den enorma fisken fångades utanför Marseille i Frankrike. Munnen visade sig vara fylld med sågkantade triangulära tänder stora som knivar men vita som elfenben. Över 400 år senare skulle vithajen beskrivas som människohajen, en mördarmaskin på jakt efter människokött utmed världens badstränder. Världens största vithaj fångades 1956 i Medelhavet utanför franska rivieran. Denna haj är idag bevarad och har en kroppslängd på 5,9 meter. Vikten var 2 ton. Detta är en massiv vithaj. Vithajen (Carcharodon carcharias) är världens största rovfisk. De meterbreda käkarna tillåter vithajen att sluka det mesta. Trots att miljontals människor årligen vistas i vithajens habitat världen över sker mycket få hajangrepp. När hajangrepp sker får de oftast stor uppmärksamhet. Få känner till hur ett angrepp från en vithaj kan undvikas. I denna bok får vi veta hur, var och när vithajen angriper och vad du kan göra för att mota bort en vithaj. Vithajen är en naturlig del av Medelhavet. En inhemsk population förekommer i Medelhavet som urskiljer sig genetiskt från andra vithajspopulationer i resten av världen. Det är okänt hur många vithajar som finns i Medelhavet. Icke desto mindre har några av världens största vithajar fångats utanför Mallorcas badstränder. Under 1800-talet och tidigt 1900-tal var vithajen vanlig i Medelhavet. Vithajen var tillräckligt mångtalig att den harpunerades för dess kött. Världens första hajnät installerades i Kroatien för att hindra vithajar från att angripa människor. Vithajen har oftast fått fungera som en stereotyp för alla hajar. Skildringar där vithajen porträtteras som en mördarmaskin är långt ifrån sanningen. Här kastas ljus på vithajens dåliga rykte. Missuppfattningar som ännu förekommer åskådliggörs och bekämpas med faktaunderlag. Marinbiologen David C. Bernvi har genom vithajsforskning i Sydafrika samlat på sig en lång erfarenhet om hur världens största rovfisk fungerar. Han har varit drivande i frågor rörande införandet av skyddslagstiftning för hajar i Sverige.
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The provenance of white sharks (Carcharodon carcharias) in the Mediterranean is both a conundrum and an important conservation issue. Considering this species's propensity for natal philopatry, any evidence that the Mediterranean stock has little or no contemporary immigration from the Atlantic would suggest that it is extraordinarily vulnerable. To address this issue we sequenced the mitochondrial control region of four rare Mediterranean white sharks. Unexpectedly, the juvenile sequences were identical although collected at different locations and times, showing little genetic differentiation from Indo-Pacific lineages, but strong separation from geographically closer Atlantic/western Indian Ocean haplotypes. Historical long-distance dispersal (probably a consequence of navigational error during past climatic oscillations) and potential founder effects are invoked to explain the anomalous relationships of this isolated 'sink' population, highlighting the present vulnerability of its nursery grounds.
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The part of the results relevant to Italian waters, of the most complete and comprehensive research program ever performed on the great white sharks in the Mediterranean Sea by the foremost expert on the subject. Each white shark record is described in details and the analysis bring to light fundamental information about size, distribution, habitat, behaviour, reproduction, diet, fisheries and attacks on humans.
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