| the fish fauna in tropical rivers: the case of the sorocaba river basin, são paulo, brazil. | a survey was carried out on the fish species in the sorocaba river basin, the main tributary of the left margin of the tietê river, located in the state of são paulo, brazil. the species were collected with gill nets. after identification of the specimens, their relative abundance, weight and standard length were determined. up to the present moment there are not any studies that focus this subject in this hydrographic basin. fifty-three species, distributed in eighteen families and six orders w ... | 2003 | 15162785 |
| sport fishing in cachoeira de emas in mogi-guaçu river, state of são paulo, brazil. | sport fishing is an important leisure activity in many countries. it directly and indirectly generates income and jobs for millions of people. in some places, its landing outstrips production from professional fishing but this fact is not always taken into account in the establishment of management actions. in the area of cachoeira (waterfall) de emas there are reports of intense fishing since the 20's. the objective of this paper is to identify the profile of the sporting fishers who frequent t ... | 2009 | 19967178 |
| spatial and temporal patterns and their influence on fish community at itupararanga reservoir, brazil. | the itupararanga reservoir is located at the sorocaba river basin, são paulo state, brazil. five cities use the waters of this reservoir for human consumption. despite this intensive use of the water resource, no study has been undertaken on the ichthyofauna of this reservoir. collections were performed in nine sampling stations, where each three were located in the riverine, transitional and lacustrine zones. fish specimens were collected using eight monofilament gillnets of 10 m length each, w ... | 2008 | 19419097 |
| chromosome polymorphism in astyanax fasciatus (teleostei, characidae). 2--chromosomal location of a satellite dna. | studies about composition of repetitive sequences and their chromosomal location have been helpful to evolutionary studies in many distinct organisms. in order to keep on assessing the possible relationships among different cytotypes of astyanax fasciatus (teleostei, characiformes) in the mogi-guaçu river (são paulo state, brazil), c-banding, chromomycin a(3) staining, and fluorescent in situ hybridization with a repetitive dna sequence (as51) isolated from astyanax scabripinnis were performed i ... | 2008 | 18931487 |
| health variables and gill morphology in the tropical fish astyanax fasciatus from a sewage-contaminated river. | the relative condition factor (kn), gonadosomatic index (gsi), selected hematological variables and gill morphology of the fish astyanax fasciatus were analyzed in two sites (site 1 was unpolluted and site 2 was polluted with untreated domestic sewage) of a tropical river (camanducaia river, sao paulo state, brazil). the relationship between the body mass (m(b)) and the standard length (l(s)) of a. fasciatus from both sites was m(b)=0.00799 l(s)(3.51843). the kn values from both males and female ... | 2005 | 15883096 |