Early Devonian fishes from Utah : Osteostraci / Robert H. Denison --

v.11:no.6(1952)

Evolution and classification of the Osteostraci. The exoskeleton of early Osteostraci. / Robert H. Denison --

v.11:no.3-4(1951)

An early Pleistocene (Blancan) fauna from Nebraska / by Paul O. McGrew --

v.9:no.2(1944)

Revised phylogeny and functional interpretation of the Edrioasteroidea based on new taxa from the Early and Middle Ordovician of western Utah / Thomas E. Guensburg --, James Sprinkle --.

n.s. no.29(1994)

The early ceramics of the Inca heartland / Brian S. Bauer.

n.s. no.31(1999)

Some early Miocene carnivores / by Elmer S. Riggs --

v.9:no.3(1945)

Spring and early summer wild flowers.

no.8(1924)

The Deseadan, early Oligocene, Marsupialia of South America / Bryan Patterson -- and Larry G. Marshall --.

v.41:no.2(1978)

Early cretaceous mammals and the evolution of mammalian molar teeth / Bryan Patterson --

v.13:no.1(1956)

The Macropodoidea (Marsupialia) of the early Pliocene Hamilton local fauna, Victoria, Australia / Timothy F. Flannery --, et al.

n.s. no.25(1992)

A new and primitive early Oligocene horse from Trans-Pecos Texas / Paul O. McGrew, Dept. of Geology, The University of Wyoming.

v.10:no.15(1953)

Early geological history of Chicago / by Henry W. Nichols, Assoc. Curator of Geology.

no.7(1925)

Buccal apparatus and gastrointestinal tract dimensions associated to the diet of early life stages of Centropomus undecimalis (Centropomidae, Actinopterygii)

The present study aims to compare the buccal apparatus and gastrointestinal tract of early life stages of Centropomus undecimalis (Bloch, 1792), and relate them to its diet. A total of 190 individuals collected with a channel net in the Catuama estuary (07º40'9.9''S, 34º50'36.7''W), northern coast of the state of Pernambuco, were examined. Morphometrical and meristic data were analyzed for the two initial developmental periods (larval and juvenile). Their digestive tube was morphologically characterized and its content identified. The longest transverse axis of food items was measured, and compared to the standard length (SL) and mouth gape size (D) of the individuals. Body measurement regressions differed significantly (p<0.001) between larvae and juveniles. The stomachs with food content (n=118 individuals) presented a proportion of 62% full and 30% empty (being 8% damaged). They differed in relation to the fullness level and presented a coiled shape when empty. The number of food items in relation to SL and D did not present an evident correlation. Larvae (SL<10 mm) feed on small copepods, while juveniles (SL=11.1 to 64.7 mm) ingest larvae of various decapod species, showing a distinct diet between these initial developmental stages.

Publishing performances of spanish academics: 1970-2004

The aim of this note is to complement some of the results appearing in Dolado et al. (2003) article “Publishing Performance in Economics: Spanish Rankings” Particularly we want to focus on three issues: the robustness of the results regardless of the time span considered, the evaluation of a researcher to the advance of the knowledge, and to what extent the choice of a particular database to download the results can affect the results. Differences are significant when we expand the time period considered. There are also small but significant differences if we combine datasets to derive the rankings.