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A. Ignacio Agudo-Padrón

  • Biodiversity Journal, 2 (4): 163-170

    A. Ignacio Agudo-Padrón & Paulo Lenhard
    Continental mollusc fauna of the Great Porto Alegre central region, RS, Southern Brazil

    ABSTRACT
    Actual available knowledge about the diversity and conservation status of the molluscan fauna occurring in the continental geopolitical space of the central section of Great Porto Alegre, Rio Grande do Sul State, RS, area of the Biome “Pampa” in Southernmost Brazil is analyzed and discussed. Geographically located on the right bank of the Jacuí Delta (in the homonymous basin) and legally protected under the category of “State Ecological Park”, next to Guaíba Lake where the Gravataí and Sinos rivers (severely polluted by the anthropogenic indiscriminate action) empty, the region holds 66 malacological species and subspecies - 42 gastropods (23 limnic and 19 terrestrial) and 24 bivalves, included in 45 Genera, 24 Families and two Classes - about 1/3 of the total number of species in the State. Fourteen are introduced and invasive alien species, i.e. 11 Gastropoda (one limnic, 10 terrestrial) and 3 bivalves. Finally, at least 8 native bivalves (Unionoida) are contained in National and State Red Lists of Endangered Fauna.

  • Biodiversity Journal, 2 (2): 059-066

    A. Ignacio Agudo-Padrón
    Threatened freshwater and terrestrial molluscs of Santa Catarina State, Southern Brazil (Mollusca, Gastropoda et Bivalvia): check list and evaluation of regional threats

    ABSTRACT
    A total of nineteen continental native mollusc species are confirmed for the Santa Catarina State (SC) (organized in ten Genera and seven Families), one aquatic Prosobranchia/Caenogastropoda (Ampullariidae), six Pulmonata terrestrial gastropods (one Ellobiidae, three Megalobulimidae and two micro-snails – Charopidae and Streptaxidae) and twelve freshwater mussels (eight Mycetopodidae and four Hyriidae). These species are designated by the International Union for Conservation of the Nature – IUCN as follows: seven as "Vulnerable", six "In Danger" and six “Without Category Established”. The general regional threats that these species are subjected to are briefly analyzed.

  • Biodiversity Journal, 2 (2): 053-058

    A. Ignacio Agudo-Padrón
    Exotic molluscs in Santa Catarina’s State, Southern Brazil region (Mollusca, Gastropoda et Bivalvia): check list and regional spatial distribution knowledge

    ABSTRACT
    A total of twenty-one exotic mollusc taxa were assessed for Santa Catarina State (SC), fifteen Gastropoda and six Bivalvia (twelve terrestrial, five limnic/freshwater - three gastropods and two bivalves, and four marine bivalves). Of these, fourteen are confirmed as invasive species (nine terrestrial, three limnic/freshwater, and two marine).

  • Biodiversity Journal, 2 (1): 009-012

    A. Ignacio Agudo-Padrón
    Current knowledge on population studies on five continental molluscs (Mollusca, Gastropoda et Bivalvia) of Santa Catarina State (SC, Central Southern Brazil region)

    ABSTRACT
    Although still very scarce, available knowledge on population studies on continental (land and freshwater) molluscs in the territory of Santa Catarina State is shortly analyzed and discussed. Based on the IUCN “Restricted Distribution” criterion, a total of 54 nominal species, including 31 terrestrial gastropods, 15 freshwater gastropods and 8 limnic bivalves, were considered strong candidates as threatened taxa. Out of all these endangered species, only 5 limnic forms (2 gastropods and 3 bivalves) were previously analysed, in some way, at population level.

  • Biodiversity Journal, 2 (1): 003-008

    A. Ignacio Agudo-Padrón
    Mollusca and environmental conservation in Santa Catarina State (SC, Southern Brazil): current situation

    ABSTRACT
    Available knowledge of malacofauna (mollusc species) conservation in the territory of Santa Catarina State, SC, central Southern Brazil region, is shortly analyzed and discussed herein. Present data originate from the author's active participation in three recent regional unpublished events dealing with biodiversity conservation in the State, carried out to cope the sensitive lack of population studies which is the main difficulty to face in order to provide accurate and detailed evaluations on biodiversity and its conservation status.