SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

In the past extralimital finds of arctic seals on the Westeuropean continental coast (northern Denmark to southern Spain) were rarely recorded. At present much more cases are known. According to the author this is due to more naturalists visiting the coasts, more and better identification manuals, the creation of seal rehabilitation centres where ill and abandoned baby seals were brought to and yearly published lists of marine mammals found on the coasts. The last two developments gave rise to networks of interested collaborators and thus to increased awareness.

A subfossil half-mandible of a Grey Seal

Palavras-chave: North Atlantic arctic pinnipeds; Extralimital records; Westeuropean continental coast; Phoca groenlandica; Phoca hispida; Cystophora cristata; Erignathus barbatus; Odobenus rosmarus.

Ano: 1997

URL: http://www.repository.naturalis.nl/record/504717

Bree, P.J.H. van; Bosscha Erdbrink, D.P..

The fortuitous discovery, in the collections of the National Museum of Natural History at Leiden, of a probably subfossil right half-mandible of a Grey Seal is reported. A short description of the piece is given and it is compared with some other recent, subfossil and fossil material.

Lengte- en breedtevariatie bij eieren van de Kokmeeuw, Larus ridibundus L

Palavras-chave: Mammalia; Pinnipedia; Halichoerus grypus; Archeozoology.

Ano: 1995

URL: http://www.repository.naturalis.nl/record/504204

The author measured length and breadth (in tenths of millimeters) of 855 Gull eggs from a large colony on the island of Texel (Eendracht). Frequency curves of length (fig. 1) and breadth (fig. 2) are given, as well as the curves on probability paper (fig. 3). Fig. 4 shows the distribution of the respective relations between length and breadth; the data given by de Vries, Jourdain, and Bau have been added.

Catalogue of the remains of Pinnipedia (Mammalia) in the collection of the Institute of Taxonomic Zoology (Zoological Museum Amsterdam)

Ano: 1952

URL: http://www.repository.naturalis.nl/record/505241

As is usual in university museums, the Zoological Museum of the University of Amsterdam (now Institute of Taxonomic Zoology) had in its collection some representative material of Pinnipedia. Some mounted specimens, some mounted skeletons, a few skulls (mainly from animals, which died in the Amsterdam Zoological Garden “Natura Artis Magistra”, commonly named Artis) and a few flat skins. A growing interest in marine mammals in general, the enthousiastic collecting activity of the late Mr Erik Flipse (a biology student, who sadly was killed at a hold-up in Afghanistan in 1979) and the seal research programme of the Research Institute for Nature Management headed by Dr J.L. van Haaften in the early years of the last decade, enlarged the collection...

Variations in length and breadth of eggs from a colony of black-headed gulls (Larus r. ridibundus Linnaeus) on the island of Texel

Ano: 1992

URL: http://www.repository.naturalis.nl/record/505550

An investigation was made in order to ascertain the mode of variation of length and breadth of eggs of the black-headed gull (Larus r. ridibundus) from a colony on the northeastern side of the island of Texel in the Netherlands. The colony can be divided into two ecologically different areas. A difference could be shown in the measurements of eggs collected in these areas. Two possible explanations of this coincidence are given. Methods of egg collecting and measuring are discussed, and data and tables of the findings during 1950, 1951 and 1952 are furnished. On account of the flood and disaster of 1953 the investigation was broken off before its completion. The fact that mean measurements and weights must be used with due caution is emphasized.

On three specimens of Lagenorhynchus albirostris Gray, 1846 (Mammalia, Cetacea)

Ano: 1957

URL: http://www.repository.naturalis.nl/record/505079

Bree, P.J.H. van; Nijssen, H..

Recently the Zoological Museum in Amsterdam came into possession of three specimens of the White-beaked Dolphin, Lagenorhynchus albirostris. As data on this species are rather scarce, it may be useful to publish a few notes on these animals. The first dolphin, a female, was caught in the North Sea at 7.3 miles N.N.W. from IJmuiden (about 52° 34’ N, 4° 30’ E) at the end of November 1958 by a commercial fish-trawler. The animal was obtained by the Netherlands Whale Research Group T.N.O. (Prof. dr. E. J. Slijper and Drs. W. L. van Utrecht), Amsterdam, for anatomical studies. Afterwards the skull and the complete skeleton were presented to the Zoological Museum. The dolphin was pregnant, its fetus weighed 1.5 kg. This specimen bears the registration number ZMA...

Fossil Odobenidae in some Dutch collections (Mammalia, Carnivora)

Ano: 1964

URL: http://www.repository.naturalis.nl/record/505163

Eight cranial and five postcranial fossil specimens are described and identified as remains of Odobenidae. Two of these (one, from Rhenen, certainly, and the other tentatively) are ascribed to the fossil, Early Pleistocene Odobenus huxleyi (Lankester, 1865), the others to the recent form, O. rosmarus (L.), while it appears possible to ascribe two of these even to the Adantic subspecies rosmarus. Some critical remarks are made regarding the systematic value of the genera Trichecodon and Alachtherium and the species antverpiensis (Rutten, 1907). The latter may eventually prove to be identical with huxleyi.

On two skulls of Delphinus dussumieri Blanford, 1891 (Notes on Cetacea, Delphinoidea I)

Ano: 1986

URL: http://www.repository.naturalis.nl/record/504965

Two skulls of Delphinus dussumieri in the collections of the British Museum (Natural History) are discussed and their dimensions given. They represent the first ones known about 140 years after the description of the species, based on one skull from the Malabar Coast.

Fossil cranial walrus material from the North Sea and the estuary of the Schelde (Mammalia, Carnivora)

Ano: 1971

URL: http://www.repository.naturalis.nl/record/504979

Six cranial odobenid remains in a public collection, which have come to our notice since the publication of two earlier papers, are described and discussed. Identification of several specimens with Odobenus antverpiensis (Rutten, 1907) cannot be ruled out.

Further observations on fossil and subfossil Odobenid material (Mammalia, Carnivora) from the North Sea

Ano: 1999

URL: http://www.repository.naturalis.nl/record/505041

Six cranial and two postcranial fossil and subfossil odobenid remains that have come to our notice since our 1986 paper on the same subject are described and discussed. One of these can, with some confidence, be identified as Odobenus antverpiensis (Rutten, 1907). The others either belong to the recent species, Odobenus rosmarus (Linnaeus, 1758), or should simply be identified as Odobenus species. Some remarks are made on the morphological differences between antverpiensis (perhaps identical with huxleyi) and rosmarus.

On the dimensions of three skulls of the species of dolphin Lipotes vexillifer Miller, 1918 (Cetacea, Platanistoidea, Iniidae)

Ano: 1990

URL: http://www.repository.naturalis.nl/record/504860

Bree, P.J.H. van; Purves, P.E..

The dimensions are given of three skulls of Lipotes vexillifer, the only specimens preserved in collections outside of China. At the same time drawings of the Lipotes vexillifer skull in the British Museum (Natural History) have been made and published with a photograph of the London specimen before it was dissected. Reasons are stated for refuting the affinity of Lipotes with Platanista, as postulated by Hinton & Pycraft (1922).

On the moult in the Stoat, Mustela erminea Linnaeus, 1758, from the Netherlands

Ano: 1975

URL: http://www.repository.naturalis.nl/record/504787

Soest, R.W.M. van; Bree, P.J.H. van.

1. A detailed study was made of the subsequent stages in the colour change of the Stoat, Mustela erminea Linnaeus, 1758. 2. Starting and finishing date of both Autumn and Spring moult were determined, based on the examination of 300 pelts from the Netherlands. 3. An indication was found for the existence of a difference in finishing date of the Spring moult in male and female Stoats. The examinations showed that female Stoats complete their summercoat a good month earlier than males. 4. It appeared that there is a remarkable difference in number of completely white animals between warmer and colder parts in the Netherlands. The colder regions hold much more completely white animals. This indicates that temperature has an influence on whether Stoats turn...

On the diagnosis of the Spinner Dolphin, Stenella longirostris (Gray, 1828) and its holotype

Ano: 1969

URL: http://www.repository.naturalis.nl/record/504487

Bree, P.J.H. van; Perrin, W.F..

In 1828 (p. 1-2), John Edward Gray described the spinner dolphin as follows: Delphinus longirostris, n. - Osse palatino carinato, postice convexo; rostro longissimo attenuata, supra depresso, lineâ mediâ elevatâ; dentibus parvis utrique 48/è48 50/50 ." To this Latin diagnosis he added: "Inhab....... Cranium in Mus. D. Brookes. The beak is more slender and depressed than that of D. delphis; the palate bone more strongly keeled; and the elevated central process of the upper surface of the beak broad and convex. Length of the head 6 inches; beak 11 1/2. Breadth of the latter at its base 3 inches." From the description it is evident that the skull on which the diagnosis was based formed part of the private museum of D. Brookes in London. In the same year in...

On the remains of some Carnivora found in a prehistoric site at Vlaardingen, the Netherlands

Palavras-chave: 42.84.

Ano: 1977

URL: http://www.repository.naturalis.nl/record/318345

The excavation of a prehistoric site at Vlaardingen, about 10 km W. of Rotterdam, yielded among ceramics and other man-made objects, many remains of zoological origin (GLASBERGEN, 1960). Mr. P. J. VAN DER FEEN and Miss M. R. WALVIUS, who were in charge of the zoological material found at Vlaardingen, trusted the author with the identification of the remains of the Carnivora, with the exception of the remains of at least 5 Dog-like animals, which were sent to Prof. Dr. A. E. VAN GIFFEN at Groningen. The prehistoric settlement at Vlaardingen is provisionally dated as between 2300 and 2100 B.C. The settlement was situated along the border of a creek or river, which later on silted up. The bank on which the habitation level was found, was rather low and the...

Fossil axial skeletal walrus material from the North Sea and the estuary of the Schelde, and a fossil Sirenian rib (Mammalia, Carnivora; Sirenia)

Ano: 1961

URL: http://www.repository.naturalis.nl/record/505071

Ten fossil odobenid remains, and a fossil sirenian rib, encountered by us in a public and in a private collection since the publication of some earlier papers, are described and discussed. All fossils belong, anatomically, to the axial skeleton. Most specimens can be identified as Odobenus rosmarus, but in some cases determination as O. antverpiensis (Rutten,1907) may be possible.

A Harbour Porpoise, Phocoena phocoena (Linnaeus, 1758), from the Mackenzie River delta, Northwest Territories, Canada (Notes on Cetacea, Delphinoidea VIII)

Ano: 1999

URL: http://www.repository.naturalis.nl/record/504967

Bree, P.J.H. van; Sergeant, D.E.; Hoek, W..

A Harbour Porpoise, Phocoena phocoena, taken from near Shallow Bay, Mackenzie River Delta, Northwest Territories (68°48’ N 136°35’ W) in July 1973 represents a range extension 800 km eastwards from the previous extreme northeastern record on the north Alaskan coast. All 12 Harbour Porpoises so far examined from either the extreme north of the range of the species in the eastern North Pacific Ocean, or from the extreme south of the range in the eastern North Pacific and eastern North Atlantic Oceans, are large animals.

On the description and the taxonomic status of Delphinus holboellii Nilsson, 1847 (Notes on Cetacea, Delphinoidea VI)

Ano: 1977

URL: http://www.repository.naturalis.nl/record/505060

Delphinus holboellii Nilsson, 1847 is a junior synonym of Stenella coeruleoalba (Meyen, 1833). The species is based on the complete skeleton of a juvenile specimen with an exceptionally high number of teeth. Attention is drawn to shrinkage in preserved skulls of Cetacea in the course of time.

Preliminary list of the cetaceans of the southern Caribbean

Ano: 1973

URL: http://www.repository.naturalis.nl/record/505014

Students working at the Caribbean Marine Biological Institute (CARMABI) on the island of Curaçao asked the present author to provide them with a list of Cetacea occurring in the Caribbean. Until recently, compiling such a list was of little use as our knowledge concerning the cetaceans in the area was very poor indeed. During the last few years, however, mainly through the studies by D. K. CALDWELL, M. C. CALDWELL and their collaborators on the lesser cetaceans taken by the small whaling industry on the island of St. Vincent, so much information has become available that it may be now useful to publish a preliminary checklist and a selected bibliography. The preliminary character of this publication must be emphasized, however, and the paper must be seen...

Notes on some specimens of the genus Plecotus Geoffroy, 1818 (Mammalia, Chiroptera) from the Netherlands

Ano: 1975

URL: http://www.repository.naturalis.nl/record/506149

Bree, P.J.H. van; Dulić, B..

In 1912, MILLER united all the West European bats with very long ears joined across the forehead and with 36 teeth into one species, Plecotus auritus (LINNAEUS, 1758). By doing so he followed BLASIUS (1857), DOBSON (1878) and TROUESSART (1910). This situation, one species without subspecies, remained till 1940. In that year V. & E. MARTINO described a subspecies of the Long-eared Bat, Plecotus auritus meridionalis, based on animals from Slovenia, Yugoslavia. The animals were characterized by having larger skulls than the bats in Northern Europe. In 1957, BAUER studied a collection of bats from Spain. He described a new subspecies, Plecotus auritus hispanicus, on bats from the surroundings of Linares de Riofrio, Salamanca. The bullae auditori of the...

Sex and age composition of a Stoat population (Mustela erminea Linnaeus, 1758) from a coastal dune region of the Netherlands

Ano: 1963

URL: http://www.repository.naturalis.nl/record/504876

Soest, R.W.M. van; Bree, P.J.H. van.

The age composition of a sample of a Stoat population from the Netherlands was studied. Various relative age criteria were tested on their validity in separating age groups. The study of the layered cemental deposits contributed the most important part to the final conclusions. By using also the data on the sexual cycle of the Stoat, a theoretically expected age pyramid was calculated, which was compared with the actually found age composition.