Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain)
Black rats, Rattus rattus, from Chafarinas Archipelago constitute one of the westernmost insular populations of the species in the Mediterranean region. To evaluate the influence of insular conditions on body and skull dimensions, the biometric characteristics of a sample from Congreso island were d...
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ftuabarcelonapb:oai:ddd.uab.cat:1810 2023-05-15T18:04:50+02:00 Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain) Ventura Queija, Jacinto López Fuster, María José 2000 application/pdf https://ddd.uab.cat/record/1810 eng eng Orsis N. 15 (2000), p. 91-102 https://ddd.uab.cat/record/1810 urn:oai:ddd.uab.cat:1810 urn:articleid:20149727n15p91 urn:recercauab:ARE-43525 urn:oai:raco.cat:article/24434 urn:oai:egreta.uab.cat:publications/0cbbb9f9-895c-4fdb-a35d-6ccd8a0480f2 urn:wos_id:000334692400017 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-nc/3.0/ CC-BY-NC Craniometry Island syndrome Mediterranean islands Rodents Somatometry Craneometría Islas mediterráneas Rattus rattus Roedores Síndrome de insularidad Somatometría Article 2000 ftuabarcelonapb 2023-02-06T20:43:11Z Black rats, Rattus rattus, from Chafarinas Archipelago constitute one of the westernmost insular populations of the species in the Mediterranean region. To evaluate the influence of insular conditions on body and skull dimensions, the biometric characteristics of a sample from Congreso island were determined and compared with nearby mainland populations (Málaga -southeastern Iberia- and Morocco). Results show that Congreso specimens are similar in size to Iberian specimens and in skull shape to Morocco animals. Considering this later fact and the geographical proximity between Chafarinas and the Morocco coastline, it seems likely that Congreso black rats had their source in North-African populations. The size similarity between Iberian and Congreso rats does not appear to be the expression of a genetic relationship but a biometric convergence. Actually, the specimens from Málaga correspond to one of the largest mainland forms of R. rattus from western Europe, and the size of Congreso rats might constitute another case of gigantism that appears as an adaptive response to insularity in black rat populations from small western Mediterranean islands. Lack of interspecific competition and low predation pressure in Congreso could have contributed to the black rat size increase. La rata negra, Rattus rattus, de las islas Chafarinas constituye una de las poblaciones más occidentales de la especie en la región mediterránea. Para evaluar la influencia de la insularidad en las dimensiones corporales y craneanas, se determinan las características biométricas de una muestra procedente de la isla del Congreso y se comparan con las correspondientes a poblaciones continentales próximas (Málaga -sudeste ibérico- y Marruecos). Los resultados indican que los ejemplares de Congreso presentan un tamaño similar a los ibéricos y una forma semejante a los de Marruecos. Esta última circunstancia, y la proximidad geográfica existente entre Chafarinas y la costa marroquí, sugiere que los animales de Congreso proceden de poblaciones ... Article in Journal/Newspaper Rattus rattus Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Rata ENVELOPE(19.216,19.216,69.928,69.928) Sudeste ENVELOPE(-60.516,-60.516,-62.988,-62.988) |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Craniometry Island syndrome Mediterranean islands Rodents Somatometry Craneometría Islas mediterráneas Rattus rattus Roedores Síndrome de insularidad Somatometría |
spellingShingle |
Craniometry Island syndrome Mediterranean islands Rodents Somatometry Craneometría Islas mediterráneas Rattus rattus Roedores Síndrome de insularidad Somatometría Ventura Queija, Jacinto López Fuster, María José Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain) |
topic_facet |
Craniometry Island syndrome Mediterranean islands Rodents Somatometry Craneometría Islas mediterráneas Rattus rattus Roedores Síndrome de insularidad Somatometría |
description |
Black rats, Rattus rattus, from Chafarinas Archipelago constitute one of the westernmost insular populations of the species in the Mediterranean region. To evaluate the influence of insular conditions on body and skull dimensions, the biometric characteristics of a sample from Congreso island were determined and compared with nearby mainland populations (Málaga -southeastern Iberia- and Morocco). Results show that Congreso specimens are similar in size to Iberian specimens and in skull shape to Morocco animals. Considering this later fact and the geographical proximity between Chafarinas and the Morocco coastline, it seems likely that Congreso black rats had their source in North-African populations. The size similarity between Iberian and Congreso rats does not appear to be the expression of a genetic relationship but a biometric convergence. Actually, the specimens from Málaga correspond to one of the largest mainland forms of R. rattus from western Europe, and the size of Congreso rats might constitute another case of gigantism that appears as an adaptive response to insularity in black rat populations from small western Mediterranean islands. Lack of interspecific competition and low predation pressure in Congreso could have contributed to the black rat size increase. La rata negra, Rattus rattus, de las islas Chafarinas constituye una de las poblaciones más occidentales de la especie en la región mediterránea. Para evaluar la influencia de la insularidad en las dimensiones corporales y craneanas, se determinan las características biométricas de una muestra procedente de la isla del Congreso y se comparan con las correspondientes a poblaciones continentales próximas (Málaga -sudeste ibérico- y Marruecos). Los resultados indican que los ejemplares de Congreso presentan un tamaño similar a los ibéricos y una forma semejante a los de Marruecos. Esta última circunstancia, y la proximidad geográfica existente entre Chafarinas y la costa marroquí, sugiere que los animales de Congreso proceden de poblaciones ... |
format |
Article in Journal/Newspaper |
author |
Ventura Queija, Jacinto López Fuster, María José |
author_facet |
Ventura Queija, Jacinto López Fuster, María José |
author_sort |
Ventura Queija, Jacinto |
title |
Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain) |
title_short |
Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain) |
title_full |
Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain) |
title_fullStr |
Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain) |
title_full_unstemmed |
Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain) |
title_sort |
morphometric analysis of the black rat, rattus rattus, from congreso island (chafarinas archipelago, spain) |
publishDate |
2000 |
url |
https://ddd.uab.cat/record/1810 |
long_lat |
ENVELOPE(19.216,19.216,69.928,69.928) ENVELOPE(-60.516,-60.516,-62.988,-62.988) |
geographic |
Rata Sudeste |
geographic_facet |
Rata Sudeste |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_relation |
Orsis N. 15 (2000), p. 91-102 https://ddd.uab.cat/record/1810 urn:oai:ddd.uab.cat:1810 urn:articleid:20149727n15p91 urn:recercauab:ARE-43525 urn:oai:raco.cat:article/24434 urn:oai:egreta.uab.cat:publications/0cbbb9f9-895c-4fdb-a35d-6ccd8a0480f2 urn:wos_id:000334692400017 |
op_rights |
open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-nc/3.0/ |
op_rightsnorm |
CC-BY-NC |
_version_ |
1766176244738555904 |