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The importance of considering small-scale variability in macrobenthic distribution: spatial segregation between two fiddler crab species (genus Leptuca) (Decapoda, Ocypodidae) Iheringia, Sér. Zool.
Checon,Helio H.; Costa,Tânia M..
ABSTRACT Defining the appropriate scale is important when trying to understand distribution patterns in community studies. Fiddler crabs are among the most common organisms inhabiting estuarine environments, and despite having a wide latitudinal distribution, are limited by shifts in temperature, current and wind pattern. Thus, many co-occur at a local scale, where their distribution is influenced by variables such as mean sediment grain diameter, salinity and tidal level. Our goal was to test intra and interspecific segregation in two similar and commonly co-occurring fiddler crabs species (Leptuca leptodactyla and Leptuca uruguayensis) at a small scale (10 m²). Interspecific segregation was observed, with L. leptodactyla occurring mainly at the upper...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fiddler crabs; Estuarine beach; Small-scale; Leptuca; Allometric growth.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100234
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Materials for a more stable subdivision of the genus Uca Leach Naturalis
Beinlich, B.; Hagen, H.O. von.
The debate on a proper subdivision of the large genus Uca was initiated by the conflicting proposals of Bott (1973) and Crane (1975). In spite of recent computer-aided mending attempts, the overall situation (instability of Uca systematics and nomenclature) has not convincingly improved. Here we try to settle the debate by presenting a simple cladistic analysis sensu Hennig (1950) based on selected morphological characters supplemented by functional remarks and a few behavioural data resulting from fieldwork. All 94 species (except six) were examined, mostly by using the authors’ collection of Uca (partly in Marburg and partly deposited in the Leiden Museum) and all species (see list in chapter 5) are assigned to one of the eight subgenera recognized:...
Tipo: Article / Letter to the editor Palavras-chave: Fiddler crabs; Subgenera; Cladistic analysis; Morphology; “major unique inventions”; Zoogeography; 42.74.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/209747
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