Published September 8, 2022 | Version v3

Stowaways Supplement S6. Relative Size Index (RSI) Comparative Dataset & R Code for Mediterranean Ship Rats

Authors/Creators

  • 1. University of Haifa

Description

Relative size index (RSI) comparative dataset and R code used to compare the RSI sensu Lomolino (1985) of the ship rats from the Ma'agan Mikhael B (MMB) shipwreck with other Mediterranean island populations. 

Worksheet 1: RSI_Dataframe - data frame used in R to produce RSI bar chart.

Worksheet 2: RSI Data - Mainland and island samples' mean condylobasal lengths (CBL) and further calculations used to derive the RSI values per island population.

Worksheet 3: CBL values for each Provençal and Corso-Sardinian Islet that was combined in the RSI analysis, taken directly from Granjon & Cheylan (1990).

Data sources:

MMB - Southern Levant (this study)

Galite & Zembra Islands - Tunisia (Ibrahim et al., 2017)

Congreso Island - Morocco (Ventura & Lopez Fuster, 2000)

São Miguel & Terceira Island (Azores) - Portugal (Ramalhinho et al., 1996)

Corsica & Provençal Islets - Provence (Granjon & Cheylan, 1990)

Sardinia & Corso-Sardinian Islets - Tuscany (Granjon & Cheylan, 1990)

Files

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Additional details

References

  • Granjon, L., & Cheylan, G. (1990b). Différenciation biométrique des rats noirs (Rattus rattus) des îles ouest-méditerranéennes. Mammalia, 54(2), 213–231.
  • Ibrahim, A. ben, Salem, I. ben, Chetoui, M., & Nouira, S. (2017). Morpho-metric analysis of the insular and mainland Rattus in Tunisia. Biologia, 72(8), 927–934. https://doi.org/10.1515/biolog-2017-0093
  • Lomolino, M. v. (1985). Body Size of Mammals on Islands: The Island Rule Reexamined. The American Naturalist, 125(2), 310–316. https://www.jstor.org/stable/2461638
  • Ramalhinho, M. G., Mathias, M. L., Santos-Reis, M., Libois, R., Fons, R., Petrucci-Fonseca, F., Oom, M. M., & Collares-Pereira, M. (1996). First Approach on the Skull Morphology of the Black Rat (Rattus rattus) from the Terceira and São Miguel Islands (Azores Archipelago). Vie Milieu, 46(3/4), 245–251.
  • Ventura, J., & López Fuster, M. (2000). Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain). Orsis, 15, 91–102.