Raça de galinhas "piracicaba": II. "Pedigree" das aves puras para os caracteres pescoço pelado e plumagem preta

The pedigree of chickens homozygous for black plumage and naked and now obtained in the Poultry Department of the "Luiz de Queiroz" School of Agriculture, was traced in this paper. The animals will be used in the formation of the new local breed called "Piracicaba PPPP", (Pescoço Pelado Preta de Piracicaba), which we propose to start with selection of others morphological characters and mainly the economical ones: egg laying, early maturing and soft-meated chickens.

Caracteres culturais das bactérias dos nódulos de algumas leguminosas tropicais

23 isolates from root nodules of 13 leguminous species were tested in laboratory for cultural and physiological characteristics. The following conclusions can be drawn: 1 - The cultural and physiological characters were not enough to identify the different isolates. 2 - The data from cultural and physiological tests help the identification of the bacteria, when checked with data from cross-inoculation tests reported elsewhere (GALLI, 1958). The bacteria studied herein may be grouped as the following: a) nodule bacteria from Vigna sinensis, Calopogonium muconoides, Centrosema pubescens, Desmodium adscendens, D. discolor, Indigofera mucronata, I. subulata, I. sumatrana, Stylosanthes guyanensisA Tephrosia cândida and Teramnus uncinatus: bacteria with scanty growth; alcaline reaction in milk-brom cresol purple; no acid production in medium with any of the carbohydrates used. b) nodule bacteria from pea and from Vicia obscura: bacteria with moderate growth; alcaline reaction, with serum zone, in milk-brom cresol purple; acid production in medium with all the carbohydrates used. c) nodule bacteria from Leucaena glauca: bacteria with moderate growth; alcaline reaction, with serum zone, in milk-brom cresol purple; acid production from rafinose and manitol. d) nodule bacteria from Cratylia floribunda: bacteria with scanty growth; alcaline reaction in milk-brom cresol purple; acid production from mannose and ramnose.

Adubação e irrigação de café: adubação combinada com irrigação no primeiro ano da instalação das covas

This paper deals with different types of fertilizer applications in coffee hill in the moment of transfering the plants to the field. During the first year, irrigation was applied in the dry season. After one year, the following characters were analised: plant height; plant diameter; number of productive branches; lenght and number of nodes in the first branch of the plant. The results obtained can be summarized as follows: the irrigation employed did not affect the treatments and mineral fertilizers combined with organic fertilizer were better than the others treatments used for comparisons.

Contribuição ao conhecimento dos nematóides que causam galhas em raízes de plantas em São Paulo e estados vizinhos

Eight root-knot nematode forms are known to occur in Brazil, namely Meloidogyne exigua, M. incognita, M. j. javanica, M. j. bauruensis, M. inornata, M. hapla, M. arenaria arenaria and M. coffeicola. After presenting a historical resume of the root-knot disease, as well as observations on symptoms, distribution and spread, and life history of the nematodes, a study of the morphological characters used in identification of species is made, a key for separating the forms referred to above being also prepared. As no information on host plants of the coffee root-knot nematode (M. exigua) was available, a few tests were performed, as an attempt to infect several plant species. Pepper (Capsicum annuun) was the only plant attacked by M. exigua, having failed all attempts to infect nine other plants, including tomato var. Rutgers. M. exigua incited formation of galls on roots of cucumber, but no adult female was found in the tissue. In a final chapter dealing with control, a review of all methods available is presented.

Production and quality of cotton fibers in relation to solar radiation

The present paper refers to a research work carried out at the Dept. of Agriculture and Horticulture of ESALQ, University of São Paulo, in Piracicaba, State of São Paulo (latitude 22º42'S, longitude 47º33' WG and altitude 546 m). Sowing at different times and using artificial cover, an attempt was made to evaluate the behavior of cultivar IAC 17 of cotton (Gossypium hirsutum L.) as to production and quality of fiber relating to incident solar radiation. Incident solar radiation, as well as insolation during the trial period, were tabulated and compared with yelds and agricultural and technological characters of fibers. The treatment under cover showed a mean level of incident solar radiation equivalent to less than 20% of that at clear sky, causing a decrease in cotton production and in the agricultural and technological characters of fibers.

Caracteres morfométricos en Difflugia corona (Testacea, Difflugidae) en ambientes lénticos del Chaco, Argentina

Morphometric characters of two populations of Difflugia corona Wallich, 1864 collected in two climatic stations (Spring, Autumn) in lentic environments of Chaco Province, Argentina, are studied. In the first climatic station it was registered specimens of bigger size; in the second, the size of the individuals was very below the minimum values registered. It is suggested a possible relationship between the size of the organisms and the availability of the inhabitable vegetable substratum.

Ontogenetic variation of plastral spotting pattern in Phrynops hilarii (Testudines, Chelidae)

The plastral spotting variation in the chelid turtle Phrynops hilarii (Duméril & Bibron, 1835) in relation to sex, size, and geographic procedence of individuals was analyzed. States for qualitative characters were analyzed using non-parametric tests. Quantitative characters (shell and scute measurements) were standardized for body size by linear regression against carapace length, and were subjected to principal components analysis and canonical discriminant function analysis. Results suggest that increased plastral spotting is a polymorphic ontogenetic trait in P. hilarii. Neither hatchlings nor juveniles have plastral pattern moderately or heavily pigmented. The simplest pattern, however, may persist without changes in some adults. There are no differences between sexes. The spatial distribution of the plastral pattern is not ordered latitudinally or longitudinally, showing no relationship with gradients of elevation, temperature, or precipitation. This pattern trait lacks of taxonomic significance. The morphometric analysis failed to reveal any character of diagnostic utility in the plastron to support the possibility that these patterns correspond to different sympatric taxa.

The small species of Belostoma (Heteroptera, Belostomatidae): I. Key to species groups and a revision of the denticolle group

A key to species groups of the genus Belostoma Latreille, 1807, using new taxonomic characters are presented as well as the revision of the four species included in the denticolle group: B. denticolle Montandon, 1903, and three new species: B. orbiculatum from eastern Argentina and southern Brazil, B. retusum from eastern Argentina and B. amazonum from northern Brazil which are described and illustrated.

Notas sobre Pseudevoplitus (Heteroptera, Pentatomidae) e descrição de duas espécies novas

Two new species of the Neotropical genus Pseudevoplitus Ruckes,1958 are described, P. amazonicus Grazia & Greve, sp. nov. and P. roraimensis Grazia & Greve, sp. nov. both from the Brazilian Amazonia, with emphasis on genital characters. Additions to the generic description and a new key to the species are presented.

Revisão taxonômica do gênero Homodiaetus (Teleostei, Siluriformes, Trichomycteridae)

The genus Homodiaetus Eigenmann & Ward, 1907 is revised and four species are recognized. Its distribution is restricted to southeastern South America, from Uruguay to Paraguay river at west to the coastal drainages of Rio de Janeiro State, Brazil. Homodiaetus is currently distinguished from other genus of Stegophilinae by the combination of the following characters: origin of ventral-fin at midlength between the snout tip and the caudal-fin origin; opercle with three or more odontodes; and gill membranes confluent with the istmus. Homodiaetus anisitsi Eigenmann & Ward, 1907, is diagnosed by the caudal-fin with black middle rays, margin of upper and lower procurrent caudal-fin rays with dark stripes extending to the caudal-fin, and 3-6 opercular odontodes; H. passarellii (Ribeiro, 1944) with 6-7 opercular odontodes, 21-24 lower procurrent caudal-fin rays and 23-26 upper procurrent caudal-fin rays; H. banguela sp. nov. with 9 opercular odontodes, 17-19 lower procurrent caudal-fin rays, 17-22 upper procurrent caudal-fin rays, reduction of fourth pharyngobranchial with only three teeth and untoothed fifth ceratobranchial; and H. graciosa sp. nov. with 5-6 dentary rows, 7-9 opercular odontodes and 16-23 upper procurrent caudal-fin rays.

Catelanus and Fusimorphus (Coleoptera, Elateridae, Agrypninae)

The historical review and the diagnosis for the monotypical genera Catelanus Fleutiaux, 1942 and Fusimorphus Fleutiaux, 1942 are presented. Catelanus trilineatus (Castelnau, 1836) and Fusimorphus submetallicus (Fleutiaux, 1924) are redescribed and illustrated and new diagnostic characters are raised up. The historical review and the discussion on the remainder Neotropical genera of Hemirhipini are also included.

Estágios imaturos de Oebalus poecilus (Heteroptera, Pentatomidae)

The immature stages of the rice bug Oebalus poecilus (Dallas, 1851) are described. The egg and the external morphological characters of the five nymphal stages were described and illustrated. The nymphs were exposed to two different photoperiods to induce seasonal forms to detect morphological differences.

Análise filogenética de Questidae e Clitellata: o problema da parafilia de "Polychaeta"

Hypotheses about the phylogenetic relationships within Questidae, and the relationships of this taxon with Clitellata using parsimony analysis of 35 external and internal morphological characters of 36 terminal taxons are presented. The results show the position of Questidae within Scolecida and Clitellata. Within the Polychaeta, Clitellata is the sister group of the Questidae. The results also indicate that the Scolecida, Microdrilli, Polychaeta, Oligochaeta and Tubificidae are paraphyletic. Clitellata, Megadrilli, Questidae, Hirudinae are monophyletic.

Duas espécies novas de Lophoblatta (Blattaria, Blattelidae) do Brasil e descrição da genitália de cinco espécies conhecidas

New species described: Lophoblatta bromelicola and L. tingua both from Rio de Janeiro, Brazil. The male genitalia of five other species are illustrated and described. New records are given: L. petropolitana Rocha e Silva & Vasconcelos, 1987 to Espírito Santo and L. speerae Rocha e Silva-Albuquerque & Gurney, 1963 to Pernambuco, Goiás and Espírito Santo, Brazil. The genus is divided in four groups according as the male genitalia characters.

Revision of Brachystethus (Heteroptera, Pentatomidae, Edessinae)

Brachystethus Laporte, 1832 is revised. Brachystethus coxalis Breddin, 1904, B. cribrus (Fabricius, 1781), B. geniculatus (Fabricius, 1787), B. improvisus Breddin, 1905, B. rubromaculatus Dallas, 1851, B. signoreti Stål, 1872, B. tricolor Bolívar, 1879, B. vexillum Breddin, 1903 and B. vicinus Signoret, 1851 are redescribed based on morphological characters, with emphasis on genitalia of both sexes. A new species, B. schuhi, from Guyana, is described, and B. discolor (Walker, 1867), incertae sedis, is removed from the genus. Illustrations and a key for species of Brachystethus are provided.