Results 31 to 40 of about 4,796 (198)

Dimethyl acetamide and dimethyl sulfoxide associated at glucose and egg yolk for cryopreservation of Pseudoplatystoma corruscans semen [PDF]

open access: yesNeotropical Ichthyology, 2023
This study aimed to develop a protocol for the cryopreservation of Pseudoplatystoma corruscans semen. For this, mature males were hormonally induced with a single dose of carp pituitary extract (5 mg/kg body weight).
Johanna Maritza Cano Velarde   +6 more
doaj   +1 more source

A new species of Pimelodus La Cépède, 1803 (Siluriformes: Pimelodidae) from rio Ribeira de Iguape basin, Brazil [PDF]

open access: yes, 2011
Pimelodus multicratifer, a new species, is described from the rio Ribeira de Iguape basin. The new species differs from the other Pimelodus species by the following features: 26 to 30 gill rakers on the first branchial arch; a combination of three to six
LUCENA, Carlos Alberto S. de   +2 more
core   +3 more sources

Ação do tempo e da forma de suplementação alimentar com Artemia franciscana sobre a sobrevivência e o crescimento de larvas de jundiá Action of time and feeding suplementation form with Artemia franciscana on the survival and growth of the south american catfish larvae

open access: yesCiência Rural, 2000
O presente trabalho foi realizado com o objetivo de verificar o efeito da suplementação alimentar com Artemia franciscana no desempenho de larvas de jundiá (Rhamdia quelen). Os tratamentos foram: T1 - Suplementação com náuplios de Artemia durante 7 dias;
Everton Rodolfo Behr   +2 more
doaj   +1 more source

Analysis of genetic variability in three species of Pimelodidae (Ostariophysi - Siluriformes)

open access: yesGenetics and Molecular Biology, 1998
Genetic variability of three Pimelodidae species, Pimelodus maculatus, Iheringichthys labrosus, and Pinirampus pirinampu, collected at one site in the Tibagi River, was comparatively analyzed using protein data for six systems which code 15 loci in liver,
Fernanda S. de Almeida, Leda M.K. Sodré
doaj   +1 more source

Brachyplatystoma rousseauxii (CASTELNAU, 1855) AND Brachyplatystoma vaillantii (VALENCIENNES, 1840) IN THE AMAZON BASIN: INTEGRATIVE REVIEW ON ECOLOGY, TAXONOMY, AND CONSERVATION STRATEGIES

open access: yesEnvironmental Smoke
The aquatic biodiversity of the Amazon basin is heavily influenced by environmental factors, such as altitude, rainfall cycles, and dry seasons. These factors impact the water's physical and chemical parameters, consequently affecting the distribution ...
Kedma Marques Costa, Uswa Sajid
doaj   +1 more source

Applications of next-generation sequencing technologies and computational tools in molecular evolution and aquatic animals conservation studies : a short review [PDF]

open access: yes, 2019
Aquatic ecosystems that form major biodiversity hotspots are critically threatened due to environmental and anthropogenic stressors. We believe that, in this genomic era, computational methods can be applied to promote aquatic biodiversity conservation ...
Afiqah-Aleng, Nor   +8 more
core   +1 more source

Efecto de la proteína dietaría en el crecimiento y sobrevivencia de alevines de Calophysus macropterus (Lichtenstein, 1819) “Mota” en condiciones de laboratorio

open access: yesManglar
El presente estudio tuvo como objetivo evaluar el efecto de tres niveles proteicos (35%, 40% y 45% Proteína Bruta) y un nivel energético (4800 kcal/kg) en los parámetros de desarrollo e índices zootécnicos de 45 alevines de mota Calophysus macropterus ...
Efraín Samuel Morales García   +4 more
doaj   +1 more source

Supplementary taxonomic description of Demidospermus pinirampi (Monogenoidea, Dactylogyridae), with a new host record and an expansion of its distribution range [PDF]

open access: yesActa Amazonica, 2017
During a survey conducted in the Lajeado Reservoir of the Tocantins River, in the state of Tocantins, Brazil, dactylogyrids were recovered from the gills of Pimelodina flavipinnis.
Julio Cesar Cenci de AGUIAR   +3 more
doaj   +2 more sources

Parasite diversity in Oxydoras niger (Osteichthyes: Doradidae) from the basin of Solimões River, Amazonas state, Brazil, and the relationship between monogenoidean and condition factor. [PDF]

open access: yes, 2017
This study describes the parasitic fauna of Oxydoras niger from the Coari Lake, tributary of the medium Solimões River, State of Amazonas, Brazil, and the relationship between the number of Monogenoidea and the condition factor.
JERÔNIMO, G. T.   +3 more
core   +1 more source

Age and growth of Pimelodella pappenheimi (siluriformes, pimelodidae) from an Atlantic Forest Stream in Southern Brazil

open access: yesBrazilian Archives of Biology and Technology, 1999
Studies were performed to determine the growth curves in length and weight for Pimelodella pappenheimi in the "das Pombas" stream, a coastal stream susceptible to the flash flood phenomenon.
Marina Faria do Amaral   +2 more
doaj   +1 more source

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