Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation
Madagascar had seven endemic chelonian species, including six tortoises and one aquatic turtle. The now extinct tortoises species, Aldabrachelys grandidieri and Aldabrachelys abrupta, as well as the extant species, Astrochelys yniphora, Astrochelys radiata, Pyxis planicauda, and Pyxis arachnoides, all occurred in the arid bush and in the mosaic of dry forests and wooded savannahs from south to northwestern regions of the island. The aquatic Madagascar Big-headed Turtle, Erymnochelys madagascariensis, occurs in rivers and large lakes in western Madagascar. These species all have delayed maturity offset by a prolonged reproductive lifespan. They also have a moderate annual reproductive output that includes multiple small clutches of eggs within a season, thus their intrinsic population growth rates are low. The last two decades have brought an increased under-standing of the demographic vulnerability of Madagascan chelonians to overexploitation. Particularly significant are the drivers of population dynamics relating to adult mortality and fecundity. The maximum level of harvest that their populations can sustain is low and is already greatly exceeded in most locations. This is the point at which the design of sound conservation strategies is crucial; increased integration of the natural history of Madagascan chelonians in conservation strategies could significantly improve their effectiveness.
Main Authors: | , |
---|---|
Format: | book_section biblioteca |
Language: | eng |
Published: |
Chelonian Research Foundation
|
Subjects: | L60 - Taxonomie et géographie animales, P01 - Conservation de la nature et ressources foncières, Testudinata, Tortue terrestre, Tortue d'eau douce, conservation des ressources, reproduction, zoologie, organisme indigène, histoire, http://aims.fao.org/aos/agrovoc/c_29427, http://aims.fao.org/aos/agrovoc/c_7818, http://aims.fao.org/aos/agrovoc/c_34664, http://aims.fao.org/aos/agrovoc/c_6523, http://aims.fao.org/aos/agrovoc/c_6507, http://aims.fao.org/aos/agrovoc/c_8529, http://aims.fao.org/aos/agrovoc/c_34268, http://aims.fao.org/aos/agrovoc/c_3635, http://aims.fao.org/aos/agrovoc/c_4510, |
Online Access: | http://agritrop.cirad.fr/571796/ http://agritrop.cirad.fr/571796/1/document_571796.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-571796 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-5717962024-01-28T21:48:18Z http://agritrop.cirad.fr/571796/ http://agritrop.cirad.fr/571796/ Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation. Pedrono Miguel, Smith Lora L.. 2013. In : Turtles on the Brink in Madagascar: Proceedings of Two Workshops on the Status, Conservation, and Biology of Malagasy Tortoises and Freshwater Turtles. by Christina M. Castellano, Anders G.J. Rhodin, Michael Ogle, Russell A. Mittermeier, Herilala Randria. Lunenburg : Chelonian Research Foundation, 59-66. (Chelonian Research Monographs, 6) ISBN 978-0-9910368-0https://doi.org/10.3854/crm.6.a12p59 <https://doi.org/10.3854/crm.6.a12p59> Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation Pedrono, Miguel Smith, Lora L. eng 2013 Chelonian Research Foundation Turtles on the Brink in Madagascar: Proceedings of Two Workshops on the Status, Conservation, and Biology of Malagasy Tortoises and Freshwater Turtles L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières Testudinata Tortue terrestre Tortue d'eau douce conservation des ressources reproduction zoologie organisme indigène histoire http://aims.fao.org/aos/agrovoc/c_29427 http://aims.fao.org/aos/agrovoc/c_7818 http://aims.fao.org/aos/agrovoc/c_34664 http://aims.fao.org/aos/agrovoc/c_6523 http://aims.fao.org/aos/agrovoc/c_6507 http://aims.fao.org/aos/agrovoc/c_8529 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_3635 Madagascar http://aims.fao.org/aos/agrovoc/c_4510 Madagascar had seven endemic chelonian species, including six tortoises and one aquatic turtle. The now extinct tortoises species, Aldabrachelys grandidieri and Aldabrachelys abrupta, as well as the extant species, Astrochelys yniphora, Astrochelys radiata, Pyxis planicauda, and Pyxis arachnoides, all occurred in the arid bush and in the mosaic of dry forests and wooded savannahs from south to northwestern regions of the island. The aquatic Madagascar Big-headed Turtle, Erymnochelys madagascariensis, occurs in rivers and large lakes in western Madagascar. These species all have delayed maturity offset by a prolonged reproductive lifespan. They also have a moderate annual reproductive output that includes multiple small clutches of eggs within a season, thus their intrinsic population growth rates are low. The last two decades have brought an increased under-standing of the demographic vulnerability of Madagascan chelonians to overexploitation. Particularly significant are the drivers of population dynamics relating to adult mortality and fecundity. The maximum level of harvest that their populations can sustain is low and is already greatly exceeded in most locations. This is the point at which the design of sound conservation strategies is crucial; increased integration of the natural history of Madagascan chelonians in conservation strategies could significantly improve their effectiveness. book_section info:eu-repo/semantics/bookPart Chapter info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/571796/1/document_571796.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.3854/crm.6.a12p59 10.3854/crm.6.a12p59 info:eu-repo/semantics/altIdentifier/doi/10.3854/crm.6.a12p59 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.3854/crm.6.a12p59 |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières Testudinata Tortue terrestre Tortue d'eau douce conservation des ressources reproduction zoologie organisme indigène histoire http://aims.fao.org/aos/agrovoc/c_29427 http://aims.fao.org/aos/agrovoc/c_7818 http://aims.fao.org/aos/agrovoc/c_34664 http://aims.fao.org/aos/agrovoc/c_6523 http://aims.fao.org/aos/agrovoc/c_6507 http://aims.fao.org/aos/agrovoc/c_8529 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_3635 http://aims.fao.org/aos/agrovoc/c_4510 L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières Testudinata Tortue terrestre Tortue d'eau douce conservation des ressources reproduction zoologie organisme indigène histoire http://aims.fao.org/aos/agrovoc/c_29427 http://aims.fao.org/aos/agrovoc/c_7818 http://aims.fao.org/aos/agrovoc/c_34664 http://aims.fao.org/aos/agrovoc/c_6523 http://aims.fao.org/aos/agrovoc/c_6507 http://aims.fao.org/aos/agrovoc/c_8529 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_3635 http://aims.fao.org/aos/agrovoc/c_4510 |
spellingShingle |
L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières Testudinata Tortue terrestre Tortue d'eau douce conservation des ressources reproduction zoologie organisme indigène histoire http://aims.fao.org/aos/agrovoc/c_29427 http://aims.fao.org/aos/agrovoc/c_7818 http://aims.fao.org/aos/agrovoc/c_34664 http://aims.fao.org/aos/agrovoc/c_6523 http://aims.fao.org/aos/agrovoc/c_6507 http://aims.fao.org/aos/agrovoc/c_8529 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_3635 http://aims.fao.org/aos/agrovoc/c_4510 L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières Testudinata Tortue terrestre Tortue d'eau douce conservation des ressources reproduction zoologie organisme indigène histoire http://aims.fao.org/aos/agrovoc/c_29427 http://aims.fao.org/aos/agrovoc/c_7818 http://aims.fao.org/aos/agrovoc/c_34664 http://aims.fao.org/aos/agrovoc/c_6523 http://aims.fao.org/aos/agrovoc/c_6507 http://aims.fao.org/aos/agrovoc/c_8529 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_3635 http://aims.fao.org/aos/agrovoc/c_4510 Pedrono, Miguel Smith, Lora L. Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation |
description |
Madagascar had seven endemic chelonian species, including six tortoises and one aquatic turtle. The now extinct tortoises species, Aldabrachelys grandidieri and Aldabrachelys abrupta, as well as the extant species, Astrochelys yniphora, Astrochelys radiata, Pyxis planicauda, and Pyxis arachnoides, all occurred in the arid bush and in the mosaic of dry forests and wooded savannahs from south to northwestern regions of the island. The aquatic Madagascar Big-headed Turtle, Erymnochelys madagascariensis, occurs in rivers and large lakes in western Madagascar. These species all have delayed maturity offset by a prolonged reproductive lifespan. They also have a moderate annual reproductive output that includes multiple small clutches of eggs within a season, thus their intrinsic population growth rates are low. The last two decades have brought an increased under-standing of the demographic vulnerability of Madagascan chelonians to overexploitation. Particularly significant are the drivers of population dynamics relating to adult mortality and fecundity. The maximum level of harvest that their populations can sustain is low and is already greatly exceeded in most locations. This is the point at which the design of sound conservation strategies is crucial; increased integration of the natural history of Madagascan chelonians in conservation strategies could significantly improve their effectiveness. |
format |
book_section |
topic_facet |
L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières Testudinata Tortue terrestre Tortue d'eau douce conservation des ressources reproduction zoologie organisme indigène histoire http://aims.fao.org/aos/agrovoc/c_29427 http://aims.fao.org/aos/agrovoc/c_7818 http://aims.fao.org/aos/agrovoc/c_34664 http://aims.fao.org/aos/agrovoc/c_6523 http://aims.fao.org/aos/agrovoc/c_6507 http://aims.fao.org/aos/agrovoc/c_8529 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_3635 http://aims.fao.org/aos/agrovoc/c_4510 |
author |
Pedrono, Miguel Smith, Lora L. |
author_facet |
Pedrono, Miguel Smith, Lora L. |
author_sort |
Pedrono, Miguel |
title |
Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation |
title_short |
Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation |
title_full |
Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation |
title_fullStr |
Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation |
title_full_unstemmed |
Overview of the natural history of Madagascar's endemic tortoises and freshwater turtles: Essential components for effective conservation |
title_sort |
overview of the natural history of madagascar's endemic tortoises and freshwater turtles: essential components for effective conservation |
publisher |
Chelonian Research Foundation |
url |
http://agritrop.cirad.fr/571796/ http://agritrop.cirad.fr/571796/1/document_571796.pdf |
work_keys_str_mv |
AT pedronomiguel overviewofthenaturalhistoryofmadagascarsendemictortoisesandfreshwaterturtlesessentialcomponentsforeffectiveconservation AT smithloral overviewofthenaturalhistoryofmadagascarsendemictortoisesandfreshwaterturtlesessentialcomponentsforeffectiveconservation |
_version_ |
1792498571761680384 |