© Biospeologica Bibliographia - Publications 2010-2

© Biospeologica Bibliographia
Publications 2010-1
Page 12 sur 116
2010 Abstract Book, edited by: Ajda MOŠKRIČ and Peter
TRONTELJ, ISBN 978-961-269-286-5. ABS: In comparison
with the other amphibians Proteus has very extended reproductive period,
continuing 30 years or more and it has an extremely long reproductive
cycles, that is to say Proteus' female lays eggs at intervals of 6 years.
Sexual maturity is also acquired very late, with males maturing earlier
than females, appears in 11 year-old males and 15 year-old females at 11-
12°C. Opposite to the knowledge of reproduction, little is known about
Proteus oogenesis; a process of differentiation and maturing of the
oocyte, resulting in the mature ovum capable of ovulation. To gain a
better understanding and elucidation of the Proteus reproductive cycles,
we have begun with studies of its ovary and oogenesis. Ovaries of 30
females of Proteus anguinus anguinus, with snout-vent lengths of 225 -
270 mm were examined by light and transmission electron microscopy.
The gonad samples used in this research were taken from animals that
had been collected in previous years (from 1972 to 2009) for other
research purposes. Animals had been collected during different seasons
and from different locations of the subterranean karstic system of
Slovenia. The morphology of the Proteus ovary, the stages of oocytes and
characteristics of developmental oocytes were determined. The oocytes
were divided into five stages based on size, colour and histology. The
most predominant oocytes in the ovaries of Proteus beside the oogonium
are previtellogenic oocytes (stage I and II). Oogonium and previtellogenic
oocytes are a constant stock of oocytes for growth. In a few cases, early
vitellogenic oocytes (stage III and IV) and only in two cases late
vitellogenic oocytes (stage V) were encountered. Stage V oocytes are the
most mature oocytes found in the ovary of Proteus. No mature
(postvitellogenic) oocytes or ova were found in the materials that were
available. In majority of ovaries examined a degenerating vitellogenic
oocytes or atretic bodies occurred too. Furthermore, we found that larger
and heavier females have more mature oocyte stages and also that
vitellogenic oocytes occur in ovaries independently of seasons, therefore
Proteus females could lay eggs at any period of the year.
http://www.icsb2010.net/
BLEHERT (D. S.), METEYER (C. U.), BALLMANN (A.
E.), LORCH (J. M.), BERLOWSKI-ZIER (B. M.),
MULLER (L.) & CRYAN (P. M.), 2010. White Nose
Syndrome in North America:103-104. In: 15 th
International Bat Research Conference, Prague, 22-27
August 2010, the conference manual: Programme,
abstracts, list of participants, edited by: Ivan HORÁČEK
and Petr BENDA, ISBN 978-80-87154-46-5, 380 p. ABS:
White Nose Syndrome (WNS) is a disease associated with unprecedented
bat mortality in the eastern United States and Canada. Since the winter of
2006-2007, bat population declines approaching 100% have been
documented at some long-surveyed hibernacula. At least six species of
hibernating bats are susceptible to WNS. Total estimated losses have
exceeded one million bats over the past three years. This presentation
summarizes disease investigation efforts underway at the USGS National
Wildlife Health Center since January 2008. Affected hibernating bats
often present with visually striking white fungal growth on their muzzles,
ears, and/or wing membranes. However, severe microscopic wing
damage associated with the disease is not always obvious to the naked
eye. Histopathological and microbiological analyses demonstrated that
WNS is characterized by a hallmark fungal skin lesion caused by a
recently discovered species of psychrophilic (cold-loving) fungus,
Geomyces destructans. The fungus invades and erodes living tissue and
grows optimally between 5°C and 14°C, temperatures consistent with the
body temperatures of hibernating bats. Laboratory infection trials
indicated that Geomycetes destructans is transmissible from bat to bat. A
genetic signature of the fungus has been identified in environmental
samples collected from several bat hibernation caves within WNSinfested
states. There is a growing body of evidence supporting an
association between WNS and life-threatening cutaneous fungal infection
by G. destructans, and this disease represents an unprecedented threat to
bats of temperate regions of North America and beyond. The decline of
North American bat populations may have far-reaching ecological
consequences.
BOGNOLO (M.), 2010. The genus Aphaobius Abeille de
Perrin, 1878 (Coleoptera, Cholevidae, Leptodirinae):151,
poster presentation. In: 20 th International Conference on
Subterranean Biology, Postojna, Slovenia, 29 August-3
September 2010, ICSB 2010 Abstract Book, edited by:
Bernard LEBRETON & Jean-Pierre BESSON
Créé le : 01.01.2010
Modifié le : 30.06.2010
Ajda MOŠKRIČ and Peter TRONTELJ, ISBN 978-961-
269-286-5. ABS: The genus Aphaobius was established in 1878 by
Abeille de Perrin to segregate the species Adelops milleri (Schmidt,
1855). A few years later, the species A. heydeni was described by Reitter.
After the first decade of the 20 th century eleven new taxa were described
by J. Muller. Further three subspecies of A. milleri were described in the
ensuing decades by Mandl and then a new, remarkably distinct species
was found and described by Pretner in 1963 as A. muellerianus. Only
recently, new investigations led to the discovery of the new species A.
grottoloi (Vailati, 2004). Following the latest revision (Bognolo &
Vailati, 2010), the genus is composed of four species groups:
muellerianus, heydeni, kraussi and milleri. The northern kraussi group is
a cluster of species distributed on the left-hand side of the river Sava,
which includes A. mixanigi, A. angusticollis, A. knirschi, A. brevicornis
and A. kraussi. The southern milleri group is a cluster of species
distributed on the right-hand side of the river Sava, which includes A.
forojulensis, A. grottoloi, A. lebenbaueri, A. miricae, A. kaplai, A.
fortesculptus, A. robustus, A. kahleni, A. milleri, A. ljubnicensis, A. kofleri
and A. alphonsi. The muellerianus group and the heydeni group include
one species each: A. muellerianus and A. heydeni. The overall distribution
of the genus Aphaobius shows a combination of species with large
distribution areas and other species known from a single site or a very
restricted geographic area. The correlation of paleogeographic features
and allopatric speciation is evident when considering the kraussi and the
milleri species groups. In particular, the northern kraussi group is
geographically located within the Southern Alps, whilst the southern
milleri group is mainly located on the Outer Dinarides. In particular, in
central Slovenia such groups have long been isolated due to the
movement of respective plates which, according to plate tectonics, slid
along the contact boundary represented by the Sava fault. To sum up, the
speciation patterns of the genus Aphaobius show past isolation in the
region between Ljubljana and Železniki, characterised by the complex
paleogeographic evolution, as opposed to a high dispersal activity of the
southern area, along the typical north-west to south-east orientation of
limestones in the northern Balkan area. http://www.icsb2010.net/
BORA (P.), RANDRIANANTOANDRO (J. C.),
RANDRIANAVELONA (R.), HANTALALAINA (E.
F.), ANDRIANTSIMANARILAFY (R. R.),
RAKOTONDRAVONY (D.), RAMILIJAONA (O. R.),
VENCES (M.), JENKINS (R. K. B.), GLAW (F.) &
KÖHLER (J.), 2010. Amphibians and Reptiles of the
Tsingy de Bemaraha Plateau, Western Madagascar:
Checklist, Biogeography and Conservation.
Herpetological Conservation and Biology 5(1):111-125.
ABS: We surveyed the Tsingy de Bemaraha plateau in central-western
Madagascar for amphibians and reptiles. We recorded 19 species of
amphibians and 60 species of reptiles by opportunistic searching,
bioacoustic identification (frogs), and pitfall trapping. Among the species
recorded, 13% were previously unknown to science and a further 15% are
of uncertain taxonomic status and possibly represent undescribed species.
Of all the species recorded, 28% are endemic to the Bemaraha plateau
and 48% appear to be dependent on forest habitat. Phylogenetic
relationships of Bemaraha amphibians suggest a biogeographic link to
eastern rainforests; whereas, those of reptiles demonstrate a link to the
forests of northern Madagascar. We comment on former species records
from the area and discuss conservation issues for amphibians and reptiles
related to the habitat alteration observed in several parts of the protected
area complex. KW: Amphibia, biogeography, checklist, conservation,
endemism, Madagascar, Tsingy de Bemaraha, Reptilia. RÉS: Nous avons
surveillé les amphibiens et les reptiles dans le plateau du Tsingy de
Bemaraha dans le central-ouest de Madagascar. Nous avons recensé 19
espèces d'amphibiens et 60 espèces de reptiles par des recherches
opportunistes, identification bioacoustique (amphibiens) et des piégeages
par trous pièges. Parmi les espèces recensées, 13% sont auparavant
inconnues par la science et plus de 15% ont des statuts taxonomiques
incertains et sont possibles des espèces non-décrites. 28% de toutes les
espèces recensées sont considérées pour représenter les endémicités à
Bemaraha et 48% des espèces pourraient être dépendantes de l'habitat
forestier. Les relations phylogénétiques des amphibiens de Bemaraha
indiquent une continuité biogéographique aux forêts humides de l'Est et
celles de reptiles une continuité aux forêts au nord de Madagascar. Nous
avons fait des commentaires sur les espèces recensées auparavant dans la
région et avons discuté à propos des actions de conservation des
amphibiens et des reptiles reliées à l'altération des habitats observée dans
certaines parties du complexe aire protégée. MC: Amphibiens,