Nutrição mineral de plantas ornamentais XI: deficiências de macronutrientes e de boro em Catharanthus Roseus (L.) G. Don e Catharanthus roseus f. albus (sweet) G. Don

Plantas de duas formas botânicas de Catharanthus roseus, de flores lilases e de flores brancas foram cultivadas em soluções nutritivas deficientes em N, P, K, Ca, Mg, S e B, e em solução completa, a fim de se obter o quadro sintomatológico das deficiências, assim como os níveis analíticos de nutrientes nas folhas, caules, raízes e flores. Manifestaram-se sintomas de deficiência claros para todos os nutrientes estudados. Nas plantas de flores lilases, as concentrações de nutrientes na matéria seca de folhas de plantas normais e deficientes foram, respectivamente, para cada nutriente estudado: N(%): 3,53-1,20; P(%): 0,35-0,11; K(%): 2,45-0,76; Ca(%): 1,77-0,81; Mg(%): 0,55-0,46; S(%):0,21-0,12; B(ppm): 382-37. Nas plantas de flores brancas, estas concentrações foram: N(%): 3,78-0,92; P(%): 0,38-0,09; K(%): 2,60-0,86; Ca(%): 1,37-1,15; Mg(%): 0,56-0,44; S(%): 0,10-0,07; B(ppm):372-39.

Two new rodent genera from the Oligocene White River formation (family Heteromyidae) / William G. Reeder --

v.10:no.35(1960)

The nature and origin of cone-in-cone structure / Bertram G. Woodland --

v.13:no.4(1964)

Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs, wissenschaftlich dargestellt in Wort und Bild.

Bd 5; Abt 3; Buch 8

Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs, wissenschaftlich dargestellt in Wort und Bild.

Bd. 5. Abt. 3. Buch 8.

Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs, wissenschaftlich dargestellt in Wort und Bild.

Bd. 5. Abt. 3. Buch 8.

A new species of Crotaphopeltis (Serpentes: Colubridae) from Barotseland, Zambia [by] Donald G. Broadley.

v.51:no.10(1968)

Relationships among the living genera of beaked whales with classifications, diagnoses, and keys. a selection from the collection of Mr. and Mrs. Harold G. Duckworth. [Exhibition] December 1, 1968-January 12, 1969.

v.53:no.4(1968)

New molluscan taxa and scientific writings of Fritz Haas, by Alan Solem. [Edited by Edward G. Nash and Patricia M. Williams.

v.53:no.2(1967)

Three new birds of the genus stachyris, by H. G. Deignan.

v.24:no.10(1939)

The Odonata of Chile, by James G. Needham and Dillman S. Bullock.

v.24:no.32(1943)

Shell utilization pattern of the hermit crab Clibanarius vittatus (Crustacea, Anomura) in an estuary at São Vicente, State of São Paulo, Brazil

We evaluated the gastropod shell utilization pattern of the hermit crab Clibanarius vittatus (Bosc, 1802) at Pescadores Beach in São Vicente, State of São Paulo, Brazil. Specimens were collected monthly from May 2001 through April 2003, in the intertidal zone at low tide. The crabs were weighed and their carapace shield length measured. All gastropod shells were identified and had their shell biometric parameters (total length and aperture length) measured (mm) and weighed (g). A total of 2,344 hermit crabs (644 males, 1,594 females, 45 ovigerous females and 61 individuals in intersex), using 13 species of gastropod shells, were collected. Stramonita haemastoma (Linnaeus, 1767), Cymatium parthenopeum (Von Salis, 1793) and Achatina fulica (Bowdich, 1822) comprised over 98% of all the shells. Male and intersex crabs were significantly larger than the females. This size difference strongly influenced the shell utilization pattern, principally in A. fulica, which has the largest shell size, that was only used by males and intersexual individuals of C. vittatus. Cymatium parthenopeum was the only shell species that showed a high determinant coefficient in all the biometric correlations evaluated. The high abundance of S. haemastoma shells and a strong correlation between crab size and shell aperture length established by a significant determination coefficient, indicated that C. vittatus uses this species as the principal resource for shell occupation at Pescadores Beach.

The families and genera of Marsupialia / Larry G. Marshall --.

n.s. no.8(1981)

Ordovician Receptaculites camacho n. sp. from Argentina / Matthew H. Nitecki -- and Gerald G. Forney --.

v.37:no.5(1978)

Systematics of the South American marsupial family Caenolestidae / Larry G. Marshall --.

n.s. no.5(1980)