Genetic data from the extinct giant rat from Tenerife (Canary Islands) points to a recent divergence from mainland relatives

Evolution of vertebrate endemics in oceanic islands follows a predictable pattern, known as the island rule, according to which gigantism arises in originally small-sized species and dwarfism in large ones. Species of extinct insular giant rodents are known from all over the world. In the Canary Islands, two examples of giant rats, † Canariomys bravoi and † Canariomys tamarani , endemic to Tenerife and Gran Canaria, respectively, disappeared soon after human settlement. The highly derived morphological features of these insular endemic rodents hamper the reconstruction of their evolutionary histories. We have retrieved partial nuclear and mitochondrial data from † C. bravoi and used this information to explore its evolutionary affinities. The resulting dated phylogeny confidently places † C. bravoi within the African grass rat clade ( Arvicanthis niloticus ). The estimated divergence time, 650 000 years ago (95% higher posterior densities: 373 000–944 000), points toward an island colonization during the Günz–Mindel interglacial stage. † Canariomys bravoi ancestors would have reached the island via passive rafting and then underwent a yearly increase of mean body mass calculated between 0.0015 g and 0.0023 g; this corresponds to fast evolutionary rates (in darwins (d), ranging from 7.09 d to 2.78 d) that are well above those observed for non-insular mammals.

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Comparison of real and simulated lava flows in the Holocene volcanism of Gran Canaria (Canary Islands, Spain) with Q-LavHA: contribution to volcanic hazard management

Natural Hazards ◽

10.1007/s11069-021-04660-6 ◽

2021 ◽

Author(s):

A. Rodriguez-Gonzalez ◽

M. Aulinas ◽

S. Mossoux ◽

F. J. Perez-Torrado ◽

J. L. Fernandez-Turiel ◽

...

Keyword(s):

Canary Islands ◽

Volcanic Hazard ◽

Lava Flows ◽

Gran Canaria ◽

Hazard Management ◽

The Holocene

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Global phylogeography of a pantropical mangrove genus Rhizophora

Scientific Reports ◽

10.1038/s41598-021-85844-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Koji Takayama ◽

Yoichi Tateishi ◽

Tadashi Kajita

Keyword(s):

Phylogenetic Trees ◽

Nuclear Dna ◽

Divergence Time ◽

Long Distance ◽

F1 Hybrid ◽

The Pacific ◽

Comprehensive Picture ◽

Dated Phylogeny ◽

Stochastic Mapping ◽

Historical Scenario

AbstractRhizophora is a key genus for revealing the formation process of the pantropical distribution of mangroves. In this study, in order to fully understand the historical scenario of Rhizophora that achieved pantropical distribution, we conducted phylogeographic analyses based on nucleotide sequences of chloroplast and nuclear DNA as well as microsatellites for samples collected worldwide. Phylogenetic trees suggested the monophyly of each AEP and IWP lineages respectively except for R. samoensis and R. × selala. The divergence time between the two lineages was 10.6 million years ago on a dated phylogeny, and biogeographic stochastic mapping analyses supported these lineages separated following a vicariant event. These data suggested that the closure of the Tethys Seaway and the reduction in mangrove distribution followed by Mid-Miocene cooling were key factors that caused the linage diversification. Phylogeographic analyses also suggested the formation of the distinctive genetic structure at the AEP region across the American continents around Pliocene. Furthermore, long-distance trans-pacific dispersal occurred from the Pacific coast of American continents to the South Pacific and formed F1 hybrid, resulting in gene exchange between the IWP and AEP lineages after 11 million years of isolation. Considering the phylogeny and phylogeography with divergence time, a comprehensive picture of the historical scenario behind the pantropical distribution of Rhizophora is updated.

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New records of naturalised and invasive cacti (Cactaceae) from Gran Canaria and Tenerife, Canary Islands, Spain

Bradleya ◽

10.25223/brad.n35.2017.a6 ◽

2017 ◽

Vol 35 (35) ◽

pp. 58-79 ◽

Cited By ~ 5

Author(s):

Filip Verloove ◽

Elizabeth Ojeda-Land ◽

Gideon F. Smith ◽

Alessandro Guiggi ◽

Jorge Alfredo Reyes-Betancort ◽

...

Keyword(s):

Canary Islands ◽

New Records ◽

Gran Canaria

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New xenophytes from the Canary Islands (Gran Canaria and Tenerife; Spain)

Acta Botanica Croatica ◽

10.1515/botcro-2017-0013 ◽

2017 ◽

Vol 76 (2) ◽

pp. 120-131 ◽

Cited By ~ 2

Author(s):

Filip Verloove

Keyword(s):

Canary Islands ◽

Vascular Plant ◽

Psidium Guajava ◽

Nerium Oleander ◽

Gran Canaria ◽

Cyperus Difformis ◽

Eclipta Prostrata ◽

Callistemon Viminalis ◽

Eucalyptus Gomphocephala ◽

Chloris Barbata

Abstract Recent fieldwork in Gran Canaria and Tenerife (Canary Islands, Spain), mostly between 2012 and 2016, yielded new chorological data for several non-native vascular plant species. The following are considered naturalized and/or potentially invasive: Callistemon viminalis, Casuarina glauca, Chloris barbata, Cyperus difformis, Eucalyptus gomphocephala, E. sideroxylon, Nephrolepis cordifolia, Rumex palustris, Senna × artemisioides (s.l.) and S. × floribunda and are reported for the first time from the Canary Islands. Other first records include: Cascabela thevetia (Tenerife), Cyclospermum leptophyllum (Gran Canaria), Digitaria radicosa (Gran Canaria, Tenerife), Dysphania anthelmintica (Tenerife), Erythrostemon gilliesii (Tenerife), Heliotropium supinum (Tenerife), Limoniastrum monopetalum (Tenerife), Nerium oleander (Tenerife), Pascalia glauca (Tenerife), Phytolacca americana (Tenerife), Podranea ricasoliana (Gran Canaria), Psidium guajava (Gran Canaria), Rumex cristatus (Tenerife), Schinus terebinthifolia (Tenerife), Solandra maxima (Tenerife), Tipuana tipu (Tenerife) and Youngia japonica (Gran Canaria). More than 20 additional taxa also represent chorological novelties but are considered ephemerals. Finally, miscellaneous notes are added for Diplachne fusca subsp. uninervia, Eclipta prostrata, Pluchea carolinensis, Prosopis juliflora and Sida rhombifolia from Gran Canaria.

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Los soldados del presidio de Gran Canaria en el siglo xvi/

Cliocanarias ◽

10.53335/cliocanarias.2021.3.12 ◽

2021 ◽

pp. 1-33

Author(s):

Manuel Lobo Cabrera ◽

Keyword(s):

Canary Islands ◽

Gran Canaria

The study of the militias in the Canary archipelago has been a recurring theme in insular historiography, addressed by different authors in breadth and depth, covering not only their organization but also the strategy and weapons used in moments of danger. However, the presence of the presidios in the Canary Islands has had fewer options, as they are professional troops, passing through and reinforcement, that operate on the islands at specific times. The objective, therefore, that we pursue in this study is. in the development of Gran Canaria defense, to oppose the two types of forces that operated in its territory and their characteristics and consequences.

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Attitudes of children with cochlear implants or hearing aids to inclusive education in the Canary Islands

10.31124/advance.9340787 ◽

2020 ◽

Author(s):

Olga María Alegre de la Rosa ◽

Luis Miguel Villar Angulo

Keyword(s):

Public Schools ◽

Children And Adolescents ◽

Cochlear Implants ◽

Inclusive Education ◽

Canary Islands ◽

Hearing Aids ◽

Attitude Score ◽

Gran Canaria ◽

Medical Specialists ◽

Students Attitudes

Abstract Introduction: This study raised the following problem: How reliable and relevant is the Inclusion for Children and Adolescents Questionnaire (ICAQ) to measure the attitudes of children and adolescents with cochlear implants (CIs) or hearing aids (HAs) to inclusive education (IE) in public schools in the Canary Islands (i.e. provinces of Gran Canaria and Tenerife)? Method: The sample consisted of 297 students from the province of Gran Canaria, and 137 students from the province of Tenerife with an average of 11 years old. An exploratory factor analysis (EFA) determined the reliability and relevance of ICAQ. Results: The authors found four factors of students’ attitudes towards IE: Family involvement and use of technology, Inclusion in the centre, Communication with medical specialists and Assessment of the support technology. Conclusions: There were significant differences between the students with CIs and HAs in the following factors: Inclusion in the centre and Assessment of the support technology. The total score of students’ attitudes towards IE was high. The factor Inclusion in the centre had the most favourable total score of students’ original attitudes towards IE. Communication with medical specialists was the lowest total attitude score towards IE for students with CIs.

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Seasonality of planktonic crustacean decapod larvae in the subtropical waters of Gran Canaria Island, NE Atlantic

Scientia Marina ◽

10.3989/scimar.04683.08a ◽

2018 ◽

Vol 82 (2) ◽

pp. 119 ◽

Cited By ~ 3

Author(s):

José M. Landeira ◽

Fernando Lozano-Soldevilla

Keyword(s):

Canary Islands ◽

Temporal Dynamics ◽

Larval Abundance ◽

Ne Atlantic ◽

Crangon Crangon ◽

Subtropical Region ◽

Larval Release ◽

Gran Canaria ◽

Release Times ◽

Decapod Larvae

A monitoring programme was established to collect plankton samples and information of environmental variables over the shelf off the island of Gran Canaria during 2005 and 2006. It produced a detailed snapshot of the composition and seasonal assemblages of the decapod larvae community in this locality, in the subtropical waters of the Canary Islands (NE Atlantic), where information about crustacean phenology has been poorly studied. The larval community was mainly composed of benthic taxa, but the contribution of pelagic taxa was also significant. Infraorders Anomura (33.4%) and Caridea (32.8%) accounted for more than half the total collected larvae. High diversity, relatively low larval abundance throughout the year and weak seasonality characterized the annual cycle. However, in relation to the temporal dynamics of temperature, two distinct larval assemblages (cold and warm) were identified that correspond to periods of mixing and stratification of the water column. The results also indicate that larval release times and durations in the subtropical waters are earlier and longer than at other higher latitudes in the NE Atlantic. We detected the presence of larvae of six species that have not yet been reported from the Canary Islands (Pandalina brevirostris, Processa edulis, Necallianasa truncata, Parapenaeus longirostris, Crangon crangon, Nematopagurus longicornis). Finally, this study provides a baseline for future comparisons with respect to fishery pressure and climate variability in this subtropical region.

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The francoeuriae species group in the genus Alloclita Staudinger, 1859 with description of A. canariensis Koster & Junnilainen, sp. nov. from the Canary Islands (Lepidoptera, Gelechioidea, Cosmopterigidae)

Nota Lepidopterologica ◽

10.3897/nl.43.48404 ◽

2020 ◽

Vol 43 ◽

pp. 95-116

Author(s):

Sjaak J. C. Koster ◽

Per Falck ◽

Jari Junnilainen ◽

Ole Karsholt ◽

Erik J. van Nieukerken

Keyword(s):

Saudi Arabia ◽

Canary Islands ◽

Species Group ◽

Dna Barcodes ◽

North African ◽

African Species ◽

Gran Canaria

Alloclita canariensis Koster & Junnilainen sp. nov. is described from the Canary Islands Fuerteventura, Gran Canaria, Lanzarote and Tenerife. Two specimens from Gran Canaria were previously misidentified as A. francoeuriae Walsingham, 1905, a North African species. We record A. francoeuriae also as new for the Canary Islands, from Fuerteventura. The potential hostplants of A. canariensis are Asteriscus species (Asteraceae). DNA barcodes of both species are provided and compared with five other Alloclita species. The related Alloclita subitariella (Riedl, 1993), only known from the holotype from Saudi Arabia, is redescribed. These three species are placed in the new Alloclita francoeuriae group.

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