Samstag, 23 Oktober 2021 15:50

MOHR, E. (1918)

Biologie und Systematik der Sechsender- Hirsche. Gattung Rusa.

Archiv für Naturgeschichte. 84A (9): 106-143.

Inhalt:

Es werden die 8 Arten der in drei Untergattungen, Hyelaphus, Axis und Rusa augeteilten Gattung Rusa dargestellt. Mit s/w Fotos, Zeichnungen und Verbreitungskarte.

mohr-biblio

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Sonntag, 15 November 2020 14:07

PLETZER, A. (2015)

Grundlagen für ein Erhaltungszucht-Programm für die nördliche Batagur-Schildkröte Batagur baska (Gray, 1830) (Reptilia: Testudines: Geoemydidae).

148 Bl. : Zsfassungen (2 Bl.) ; Ill., graph. Darst.
Graz, Univ., Masterarb., 2015

Zusammenfassung:

Zur Erhaltung der hochgradig gefährdeten nördlichen Batagur-Schildkröte (Batagur baska) ist ein umfassender Managementplan notwendig, damit ein gesundes weiteres Überleben der Tiere und eine spätere Auswilderung möglich ist. In der vorliegenden Arbeit wird zuerst ein Überblick über den aktuellen Bestand, sowie zu Biologie, Gefährdung, Schutz und Zuchterfolge gegeben. Zur Dokumentation aller vorhandenen Daten der Individuen in menschlicher Obhut, ein „Studbook“ (Zuchtbuch) konzipiert, womit es in Zukunft auch leichter möglich sein wird, Analysen der Populationsentwicklung zu erstellen und Änderungen des Bestandes und der Struktur nachzuverfolgen. Darauf aufbauend wurde mithilfe des Programms VORTEX eine PVA (Population Viability Analysis) für diese Art durchgeführt, bei der verschiedene Modelle zur Überlebensfähigkeit der Populationen berechnet wurden. Aufgrund der unzureichenden Datenlage sind die Ergebnisse dieser Modelle aber nur bedingt aussagekräftig. Für den Entwurf zukünftiger Vorgehensweisen wurden Fragestellungen formuliert, deren Beantwortung für einen strukturierten Managementplan erforderlich ist. Vor allem die Klärung der Verwandtschaftsverhältnisse von Zuchttieren untereinander sowie genetischer regionaler Unterschiede ist für eine Erstellung von geeigneten Zuchtplänen dringend notwendig. Des Weiteren wurden anhand umfassender Literaturrecherchen und mit aktuellen Erkenntnissen aus genetischen Analysen konkrete Handlungsempfehlungen abgeleitet. Generell kann gesagt werden, dass Batagur baska innerhalb eines Erhaltungszuchtprogramms wahrscheinlich eine genügend hohe Gendiversität erhalten kann, um nicht durch Inzuchtdepression vom Aussterben bedroht zu sein. Die Frage, ob noch genügend genetische Variabilität für eine erfolgreiche Wiederansiedelung vorhanden ist, kann hingegen aufgrund der vorliegenden Daten nicht beantwortet werden.

Summary:

For preservation of the rare and threatened turtle species Batagur baska a comprehensive management plan is necessary, so that a healthy survival and subsequent reintroduction is possible. For this purpose, an overview of the current population size, as well as a summary of the biology, hazards, protection and breeding success of the species is given. For documentation of all individuals in captivity, an International Studbook is created to facilitate subsequent analyses of populations and record and track changes of the structure of the population therein. Based on this data, the program VORTEX was used to conduct a PVA (population viability analysis), where various models with different input parameters were calculated. Due to insufficient data, the results of these models are only of limited significance. For the development of future conservation strategies, the most important open questions were identified. The clarification of relationships between the breeding animals and a better knowledge concerning regional differences of the genetic variability is essential for the establishment of suitable breeding plans. Furthermore, additional recommendations for species protection were derived from literature data and by evaluating results of the genomic analyses. Batagur baska is likely to maintain sufficient genetic diversity within a conservation breeding program in order to avoid the threat of extinction because of inbreeding depression. However, it remains unclear whether the genetic variability is sufficient for a successful reintroduction of the species in the wild.

pletzer-biblio

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Dienstag, 10 November 2020 17:38

POCOCK, R. I. (1939)

The Fauna of British India, including Ceylon and Burma. 

Mammals Vol. 1:Prmates and Carnivora (in part), Families Felidae and Viverridae

Genus Prionailurus Severtzow: pp. 265–284.

Taylor & Francis Ltd. Publishers, London.

Volltext: https://archive.org/stream/PocockMammalia1/pocock1#page/n339/mode/2up

pocock-biblio

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Samstag, 04 Juli 2020 10:12

BAIG, K. J. & MASROOR, R. (2008)

The snakes of the genus Spalerosophis Jan, 1865 in Indo-Pakistan and Iran.

Herpetozoa 20:109-115

Abstract:

The present studies aimed to resolve some systematic issues related to species of the colubrid snake genus Spalerosophis JAN, 1865. The studies were carried out with particular reference to Spalerosophis atriceps FISCHER, 1885 that has been rated controversially since long among other things because of the incorrect identification of the type locality of Spalerosophis diadema (SCHLEGEL, 1837). The studies conclude that atriceps is an independent species and schirazianus is a junior synonym of Spalerosophis diadema.

baig-biblio

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Freitag, 30 Juni 2017 08:44

DA SILVA, A. & LENIN, J. (2010)

Mugger Crocodile - Crocodylus palustris.

In: Crocodiles.Status Survey and Conservation Action Plan: 94-98.
Third Edition, ed. by S.C. Manolis and C. Stevenson. Crocodile Specialist Group: Darwin.

Aus dem Inhalt:

The  mugger is a hole-nesting species, with egg-laying taking place during the annual dry season. Females become sexually mature at approximately 1.8-2 m, and lay 25-30 eggs. Nests are located in a wide variety of habitats, and females have even been known to nest at the opening of, or inside, their burrow. In captivity, some Muggers are known to lay two clutches in a single year, but this has not been observed in the wild. Incubation is relatively short, typically lasting 55-75 days. Like a number of other crocodilians, C. palustris is known to dig burrows. Whitaker and Whitaker (1984) referred to mugger burrows in Sri Lanka and India (Gujarat and South India) and noted that yearling, sub-adult and adult mugger all dig burrows. In Iran they are sometimes known to dig two burrows close to each other, which may be used by one or  more  crocodiles  (Mobaraki  2002).  These  burrows  are presumably utilized as an effective refuge from hot daytime ambient temperatures. These burrows play a critical role in the survival of crocodiles living in harsh environments, allowing them to avoid exposure to excessively low and high temperatures (<5ºC and >38ºC respectively) for long periods of time, which may be lethal. Mugger are known to undertake long-distance overland treks.

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Dienstag, 27 Juni 2017 10:43

STEVENSON, C. & WHITAKER, R. (2010)

Gharial - Gavialis gangeticus.

In: Crocodiles.Status Survey and Conservation Action Plan: 139-143.
Third Edition, ed. by S.C. Manolis and C. Stevenson. Crocodile Specialist Group: Darwin.

Aus dem Inhalt:

Historically, G. gangeticus was found in the northern part of the Indian subcontinent, in the Indus (Pakistan), Ganges (India and Nepal), Mahanadi (India) and Brahmaputra (Bangladesh, India and Bhutan) River systems. The presence of the species in the Irrawaddy River system in Myanmar has also been reported. The Gharial is typically a resident of fl owing rivers with deep pools that have high sand banks and good fi sh stocks. Exposed sand banks are used for nesting. Although the function of the ‘ghara’ is not well understood, it is apparently used as a visual sex indicator, as a sound resonator, or for bubbling or other associated sexual behaviours.

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Dienstag, 27 Juni 2017 07:45

SIMPSON, B.K. & BEZUIJEN, M.R. (2010).

Siamese Crocodile - Crocodylus siamensis.

In: Crocodiles.Status Survey and Conservation Action Plan: 120-126.
Third Edition, ed. by S.C. Manolis and C. Stevenson. Crocodile Specialist Group: Darwin.

Aus dem Inhalt:

Crocodylus siamensis is one of the world’s most endangered crocodilians. In 1992 it was reported as virtually extinct in the wild and in 1996 it was accorded IUCN Red List status of ‘Critically Endangered’. Since 1996, new  status  assessments have resulted in the discovery of wild populations and information on its global distribution and ecology, although it remains one of the least known of crocodilians.The Siamese crocodile occurs in a wide range of freshwater habitats, including slow-moving rivers and streams, lakes, seasonal oxbow lakes, marshes and swamplands. During the wet season, individuals disperse across fl ooded landscapes. The use of burrows excavated into the banks of rivers or lakes has been reported, with up to fi ve individuals utilizing a single burrow at one time. Generally preferring lowland elevations, the species has been recorded up to 600 m.

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Dienstag, 27 Juni 2017 06:48

GRAMENTZ, D. (2008)

Zur Bedrohung, räumlichen Verteilung und Bedrohung von Crocodylus porosus im Bentota Ganga, Sri Lanka.

Elaphe 16 (3): 41-52

Erweiterte englische Fassung verfügbar als "The distribution, abundance and threat of the saltwater crocodile, Crocodylus porosus, in the Bentota Ganga, Sri Lanka"

 

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Saltwater Crocodile - Crocodylus porosus

In: Crocodiles.Status Survey and Conservation Action Plan: 93-113.
Third Edition, ed. by S.C. Manolis and C. Stevenson. Crocodile Specialist Group: Darwin.

Aus dem Inhalt:

Crocodylus  porosus is considered the largest of the living crocodilians, with reported lengths of up to 6-7 m. Although accounting for far less human fatalities than the Nile crocodile, C. porosus preys on people when given the opportunity. It is one of the most widely distributed of all crocodilians, ranging from southern India and Sri Lanka, throughout  southeast Asia,  east  through  the Philippines to Micronesia, and down through Indonesia, Papua New Guinea and the Solomon Islands to northern Australia.

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Mittwoch, 07 Juni 2017 11:44

GRAY, J.E. (1856)

On some new species freshwater tortoises from North America, Ceylon and Australia.

Ann. Mag. Nat. Hist. (2) 18: 263-268.

Inhalt:

In dem Artikel werden v erschiedene Gattungen revidiert, so etwa Pseudemys von emys getrennt und verschiedene neue Arten beschrieben, darunter Chelodina colliei und Chelodina sulcata

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