Browsing by Author "Palma, Sergio"

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    Compromiso renal en vasculitis asociadas a anticuerpos anticitoplasma de neutrófilos. Recomendaciones de consenso de las Sociedades Chilenas de Nefrología y Reumatología
    (2018) Aguirre, Verónica; Alvo, Miriam; Ardiles, Leopoldo; Fierro, Alberto; Goecke, Annelise; Iruretagoyena B., Mirentxu; Jalil Milad, Roberto; Massardo Vega, Loreto; Méndez Olivieri, Gonzalo Patricio; Palma, Sergio; Roessler, Emilio; Silva, Francisco; Wurgaft, Andrés
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    Egg production of the burrowing shrimp Callichirus seilacheri (Bott 1955) (Decapoda, Callianassidae) in northern Chile
    (2008) Hernaez, Patricio; Palma, Sergio; Wehrtmann, Ingo S.
    The thalassinidean shrimp Callichirus seilacheri is a common species in the intertidal zone of the South American Pacific coast. However, our knowledge of its reproductive ecology is rather limited. The present study was carried out between January and December 2003 at Las Machas, northern Chile. Although ovigerous females were encountered almost throughout the study period, they were particularly abundant between May and September when water temperatures were lowest and sediment coverage of the burrow entrances was highest. Females of C. seilacheri produced numerous (17,450 +/- 3,796 eggs) and small (0.884 +/- 0.080 mm; 0.262 +/- 0.054 mm(3)) eggs when compared to other thalassinidean shrimps for which such information is available. Fecundity was positively correlated with female size; however, correlations were allometric, which might be related to the elasticity of the abdomen. Egg volume increased by 41.2% during embryogenesis, and egg loss during the incubation period was on average 8%. Females inverted on average 14.9% of their dry weight into egg production.