Recursos de colección

Repositorio da Universidade dos Açores (8.391 recursos)

O Repositório Institucional da Universidade dos Açores desenvolvido no âmbito do projecto RCAAP.

ARQ - CBM - Número 24

Mostrando recursos 1 - 11 de 11

  1. Revision of the occurrence of the long‐finned pilot whale Globicephala melas (Traill, 1809), in the Azores

    Prieto, Rui; Fernandes, Manuel
    Although the expected distribution of the long-finned pilot whale in the Atlantic includes the Azores, overlapping with the known northern distribution of the short-finned pilot whale, the only documental references to the species in the archipelago are based on a single specimen captured in 1894. Moreover, a clear distinction between the two species of pilot-whales based on osteological grounds was only possible after 1971 and before that a great uncertainty existed about the phylogeny of the Genus. The long-finned pilot whale, thus, has never been confirmed by sightings at sea in the region and the extent of its occurrence to...

  2. First attempted breeding of Manx Shearwater (Puffinus puffinus Brünnich, 1764) on Santa Maria, Azores

    Bried, Joël; Geraldes, Pedro; Paiva, Vítor H.
    The Manx Shearwater Puffinus puffinus (Brünnich, 1764) is a north Atlantic seabird which mainly breeds in Europe. In the Azores, its breeding colonies occur exclusively on the islands from the western group (Flores and Corvo). Here, we report the first breeding attempt observed on Vila islet, Santa Maria (the easternmost island of the archipelago, situated circa 600 km from Flores and Corvo). Our observation confirms that Manx Shearwaters can settle far from their usual breeding localities and enhances the importance of Vila islet for the Azorean marine avifauna.

  3. The singlespot frogfish Antennarius radiosus (Lophiiformes, Antennariidae), a valid member of the ichthyofauna of the Azores

    Porteiro, Filipe M.; Afonso, Pedro
    The big-eyed frogfish Antennarius radiosus Garman, 1896 is confirmed as a valid record for the Azores. A revision of the historical records confirms three valid species of frogfishes from the Azores (A. radiosus, A. nummifer, Histrio histrio). Two species (A. senegalensis, A. pardalis or A. multiocellatus) require confirmation.

  4. Luria lurida (Gastropoda), a new record for the Pleistocene of Santa Maria, Azores

    Ávila, Sérgio P.; Madeira, Patrícia; García-Talavera, Francisco; Silva, C. M. da; Cachão, Mário; Martins, António M. de Frias
    The cypraeid gastropod Luria lurida (Linnaeus, 1758) is reported for the first time from Pleistocene deposits at the Prainha site, on the island of Santa Maria, Azores archipelago.

  5. New records of Pennatulacea (Cnidaria, Octocorallia) from Madeira island

    Ocaña, Óscar; Wirtz, Peter
    The Pennatulaceans Pteroeides spinosum (Ellis, 1764) and Pennatula aculeata Danielssen, 1860 are noted from Madeira for the first time. With the species Veretillum cynomorium (Pallas, 1766) already being known from the area, there are now three species of Pennatulacea recorded from Madeira.

  6. Current status of using beaks to identify cephalopods: III International Workshop and training course on Cephalopod beaks, Faial island, Azores, April 2007

    Xavier, José; Clarke, Malcolm R.; Magalhães, Maria C.; Stowasser, Gabrielle; Blanco, Carmen; Cherel, Yves
    The identification of cephalopods using their beaks is still a difficult technique. To increase our knowledge of this technique and stimulate a new generation of beak experts, the III International beak workshop and training course was organized in Faial, Azores Islands in 2007. We briefly review the activities of the workshop, including the identification procedure of lower beaks of cephalopods from predators with emphasis on cetaceans, seals, fish and seabirds; provision of basic knowledge to young researchers interested in the study area; identification of recent developments in beak research; and discussion of the main problematic issues. The families that need particular attention...

  7. Suitability as Medfly Ceratitis capitata (Diptera, Tephritidae) hosts, of seven fruit species growing on the island of São Miguel, Azores

    Medeiros, Aida; Oliveira, Luísa; Garcia, Patrícia
    Seven species of fruit were selected to study their suitability as hosts to Ceratitis capitata (Wiedemann). Suitability was determined by evaluating field infestation rates of different host-fruit and by studying the performance of C. capitata reared on these hosts. We sampled old regional cultivars of hot pepper (Capsicum annuum), loquat (Eriobotrya japonica), cattley guava (Psidium littorale), sweet orange (Citrus sinensis) and mandarin (Citrus reticulata); and two introduced fruit plants, feijoa (Feijoa sellowiana cultivar Sellwiana) and peach (Prunus persica cultivar Robidoux). Of the latter, except for mandarin, fruit contained larvae that pupated and yielded viable adults. In the case of mandarins, larvae were detected...

  8. Biogeographic origin of the common green lacewings (Neuroptera, Chrysopidae) of the Azores archipelago, through morphology analysis

    Ventura, Maria A.; Thierry, D.; Lourenço, Paula C.; Coderre, Daniel
    Due to a great dispersal ability and small size, insects are probably among the first island colonisers. Chrysoperla carnea sensu lato was for long considered the sole member of the Chrysopidae family in the Azores (Portugal) since it has been regarded as a complex of sibling species in Europe and North America. Its separation into different morphotypes is based on a set of pre-determined morphological traits. Their analysis leads to appraise Azorean Chrysopidae origin, comparing insular and mainland populations. Two outside “carnea complex” species, namely the Nearctic C. rufilabris and the Neotropical C. externa, were also examined to validate the method. Data...

  9. New record of Novocrania (Brachiopoda, Craniida) from Madeira, with notes on Recent brachiopod occurrences in the Macaronesian archipelagos

    Logan, Alan; Wirtz, Peter; Swinnen, Frank
    The inarticulated brachiopod Novocrania anomala (Müller) is recorded for the first time from Madeira Island, bringing the total of living species for that area to six. Updated comparisons of Recent brachiopod diversities between the Macaronesian archipelagos show similar values for Madeira, the Cape Verde Islands and the Azores but higher values for the Canary Islands. Comparisons are also made between shallow-water cave and crevice communities in Madeira, the Canary Islands and the Cape Verde Islands, where dense populations of one or two brachiopod species are thriving in cryptic habitats where competition for space and resources is presumably reduced. No such occurrences have yet been...

  10. On a collection of hydroids (Cnidaria, Hydrozoa) from the Madeira archipelago

    Wirtz, Peter
    Hydroids were collected from Madeira and Porto Santo Islands (eastern temperate Atlantic Ocean) by SCUBA diving over a depth range from 0 to 62 m, as well as by two trawls off the city of Funchal, at depths of 60 and 100 m. A preliminary list of 53 identified species from 33 genera and 17 families is given and comments are made on some of them. Eight of them could not be determined to species level because they either lacked gonophores or the medusa stage is necessary for identification. An undescribed species (genus Sertularella) will be described in a separate publication....

  11. The role of habitat features in a primary succession

    Elias, Rui B.; Dias, Eduardo
    In order to determine the role of habitat features in a primary succession on lava domes of Terceira Island (Azores) we addressed the following questions: (1) Is the rate of cover development related to environmental stress? (2) Do succession rates differ as a result of habitat differences? One transect, intercepting several habitats types (rocky hummocks, hollows and pits, small and large fissures), was established from the slope to the summit of a 247 yr old dome. Data on floristic composition, vegetation bioarea, structure, demography and soil nutrients were collected. Quantitative and qualitative similarities among habitats were also analyzed. Cover development and...

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