Recursos de colección

Repositorio da Universidade dos Açores (9.269 recursos)

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

ARQ - CBM - Número 27

Mostrando recursos 1 - 9 de 9

  1. First records of Tarentola mauritanica (Linnaeus, 1758) (Reptilia; Gekkonidae) in the Azores

    Barreiros, João P.; Elias, Rui B.; Lourenço, Joana; Dias, Eduardo; Borges, Paulo A. V.
    The Moorish gecko Tarentola mauritanica (Linnaeus, 1758) is a widespread species native to the Mediterranean region from southern France to Greece and northern Africa (Loveridge 1947; Martínez-Rica 1997; Hódar 2002; Perera et al. 2008, 2010; Plezeguelos et al. 2008). It has recently been reported as living and breeding in California (Marhdt 1998) and also as an introduced species in Madeira (Báez & Biscoito 1993). Tarentola mauritanica is paraphyletic with respect to T. angustimentalis Steindachner, 1891, a Canary Islands endemic (Harris et al. 2004a). Here we report new occurrences of the Moorish gecko on Terceira Island, Azores archipelago, and 3 other occurrences on the islands...

  2. Shrimps (Crustacea, Decapoda, Caridea) associated with gorgonians at the coast of Senegal

    Wirtz, Peter; Grave, Sammy de
    Symbioses are common in the marine environment. Some taxa appear to be particularly prone to be involved in associations. Crustaceans probably form more associations with other classes than any other marine animals (Ross 1983), crustacean – cnidarian associations being particularly common (Patton 1967). Gorgonianassociated decapods have been described from both sides of the Atlantic (e.g. Spotte et al. 1994, 1995, Wirtz & d´Udekem d´Acoz 2001, Wirtz et al. 2009). Gorgonians were therefore searched for associated decapods during three dives in the area of NGor, Senegal, i.e. at the western tip of Africa.

  3. First records of some species of Diptera (Insecta) from the Azores

    Roháček, Jindřich; Starý, Jaroslav
    During a collecting trip undertaken by J. Roháček and M. Vála in the São Miguel Island (Azores) in August and September 2006, mainly devoted to acalyptrate flies, three distinctive species of Diptera were found, two of which proved to be hitherto unrecorded from the Azorean archipelago. These additions to the regional fauna are presented below with a discussion of their origin. The voucher specimens of the species recorded below are deposited in the following collections: JSO – collection of J. Starý, Olomouc, Czech Republic, SMOC – Silesian Museum, Opava, Czech Republic, ZMAN – Zoological Museum, Amsterdam, Netherlands.

  4. The loggerhead sea turtle (Caretta caretta) on Sal Island, Cape Verde : nesting activity and beach surveillance in 2009

    Lino, Sílvia P. P.; Gonçalves, Euclides; Cozens, Jacquie
    Surveys for Caretta caretta nesting activities were performed during the nesting seasons from the middle of June to end of October 2009 on Sal Island, Cape Verde. A total of 3628 activities were registered: 1071 nests, 2466 turtle tracks and 91 dead turtles. On nesting beaches still used by locals to catch female turtles for their meat, nightly patrols from 9 pm to 5 am resulted in a significant reduction in turtle mortality in comparison to non patrolled beaches. On beaches regularly patrolled, an increment of nests per km was also observed which allows us to conclude that the presence of...

  5. Designing a shipboard line transect survey to estimate cetacean abundance off the Azores archipelago

    Faustino, Cláudia E. S.; Silva, Mónica A.; Marques, Tiago A.; Thomas, Len
    Management schemes dedicated to the conservation of wildlife populations rely on the effective monitoring of population size, and this may require the accurate and precise estimation of this parameter. Line transect distance sampling can be an effective approach for estimating abundance. Little information is available regarding cetacean abundance in the Azores. This paper had two aims: 1) to design a line transect shipboard survey to estimate the absolute abundance of the most common cetaceans off the Azores; and 2) to provide a set of potential survey effort scenarios to policy makers and environmental managers. Three survey scenarios are assessed, and one...

  6. Experimental harvesting of juvenile common octopus Octopus vulgaris, for commercial ongrowing in the Azores

    Pham, Christopher K.; Isidro, Eduardo
    Octopus aquaculture is currently restricted to ongrowing of sub-adult to commercial size because culture of paralarvae remains a bottleneck. In most countries, commercial ongrowing rely upon existing pot fisheries for octopuses for obtaining their specimens. In the Azores, such fishery does not exist and effective methods of harvest are required if farming is to be implemented. In this study, we investigated the potential of obtaining subadult octopuses on the coast of Faial Island, Azores. Two sets of traps (n=30) consisting of 3 PVC tubes within cement blocks were set-up on two different substrates; soft sediment (Pedro Miguel) and rocky-sand (Pasteleiro) at depth...

  7. Check-list of interstitial polychaetes from intertidal and shallow subtidal soft bottoms of Tenerife, Canary Islands

    Riera, Rodrigo; Núñez, Jorge; Carmen Brito, María del
    A check-list of polychaete species from two stations on the south coast of Tenerife (Los Abrigos and Los Cristianos) at two different tidal levels, intertidal and shallow subtidal (3 m depth) is presented. A total of 47 species were collected, the hesionid Microphthalmus pseudoaberrans Campoy & Viéitez, 1982 and the spionids Rhynchospio glutaea (Ehlers, 1897) and Spio filicornis (O.F. Müller, 1776) being the most abundant. With 18 species the family Syllidae is the most diverse, followed by the Spionidae and Paraonidae with 6 and 5 species, respectively. The interstitial polychaetes found are represented by both meiofaunalsized and small-sized macrofaunal species.

  8. Phytobenthic communities of intertidal rock pools in the eastern islands of Azores and their relation to position on shore and pool morphology

    Wallenstein, Francisco; Peres, Sara D.; Xavier, Emanuel D.; Neto, Ana I.
    This study aimed to characterize algal composition inside rock-pools from two islands of the Azores archipelago (São Miguel and Santa Maria) and relate it to shore height and pool morphology. Pools were categorized as upper, medium and lower intertidal according to the surrounding communities. Maximum depth and surface area were used to reflect morphology and qualitative sampling to evaluate algal species richness. PRIMER software assessed the similarity across islands, sites, shore heights and pool morphology. Eighty eight algal taxa were identified in pools from São Miguel and 52 from Santa Maria. Rhodophycean species dominated rock-pool flora on both islands. Differences were...

  9. The cave‐adapted arthropod fauna from Madeira archipelago

    Serrano, Artur R. M.; Borges, Paulo A. V.
    This work provides an overview of the hypogean fauna from the Madeira archipelago, presenting a list of obligated cave-dwelling species. A total of 6 troglobiont species in 5 orders have been described to date. The cave fauna in Madeira can be considered poor when compared with either the local epigean fauna or the cave fauna of other Macaronesian archipelagos. Curious is the occurrence of one wood-louse cave species (Trichoniscus bassoti), which apparently is the only troglobite living in more than one Macaronesian archipelago (Canaries and Madeira). Major problems related to the conservation of cave fauna are discussed, but it is clear that the protection...

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