Results 11 to 20 of about 302 (107)

Lipid requirement of bay snook (Petenia splendida Günther, 1862) juveniles

open access: yesLatin American Journal of Aquatic Research, 2020
This research study is focused on the lipid requirements of Petenia splendida (0.65 ± 0.19 g) juveniles. Fish were fed with trout commercial diet (Silver Cup™ - 45% protein and 16% lipids), as control diet - CD (which is usually used to feed this species at commercial scale), and four isoproteic (45% crude protein) diet formulated with different lipid ...
Uriel Rodríguez-Estrada   +8 more
openaire   +2 more sources

Biota acuática de la cuenca media del río Lacantún, Chiapas y la importancia del monitoreo de largo plazo [PDF]

open access: yes, 2022
Se presenta un listado de especies acuáticas de 6 phyla (Platyhelminthes, Acanthocephala, Nematoda, Arthropoda, Mollusca, Chordata) muestreadas en la cuenca del río Lacantún, en la región conocida como “Selva Lacandona”, Chiapas, México.
Carlos Ramírez   +14 more
core   +2 more sources

Predation risk reduces a female preference for heterospecific males in the green swordtail [PDF]

open access: yes, 2016
The presence of a predator can result in the alteration, loss or reversal of a mating preference. Under predation risk, females often change their initial preference for conspicuous males, favouring less flashy males to reduce the risk of being detected ...
Alonzo, Suzanne H.   +2 more
core   +1 more source

Mitochondrial DNA phylogeny of the family cichlidae: monophyly and fast molecular evolution of the neotropical assemblage [PDF]

open access: yes, 1999
. A mitochondrial DNA (mtDNA) phylogeny of cichlid fish is presented for the most taxonomically inclusive data set compiled to date (64 taxa). 16S rDNA data establish with confidence relationships among major lineages of cichlids, with a general pattern ...
Amazonas Brasil   +5 more
core   +2 more sources

Desarrollo embrionario y larval de la mojarra paleta Vieja melanura (Günther, 1862) del sureste mexicano [PDF]

open access: yes, 2020
Previous studies of Vieja melanura consider population aspects, without addressing reproductive references, which are useful for fisheries and aquaculture management plans.
Cuenca-Soria, Carlos Alberto   +4 more
core   +2 more sources

First record of the non-native pacu, \u3cem\u3ePiaractus brachypomus\u3c/em\u3e, in Lago Petén-Itzá, Guatemala, Central America [PDF]

open access: yes, 2018
We documented the first record of the non-native species Piaractus brachypomus (Characiformes: Serrasalmidae) in Lago Petén-Itzá, Petén, Guatemala. One brined specimen was donated by a local fisherman in San Benito, El Petén.
Chakrabarty, Prosanta   +3 more
core   +2 more sources

Ontogeny of the digestive enzyme activity of the Amazonian pimelodid catfish Pseudoplatystoma punctifer (Castelnau, 1855) [PDF]

open access: yes, 2021
The aim of the study was to evaluate the functional ontogeny of the digestive system of Pseudoplatystoma punctifer through the analysis of the activity of the main intestinal (alkaline phosphatase, aminopeptidase N, maltase and leucine-alanine peptidase),
Andree, Karl B.   +7 more
core   +1 more source

Los cromosomas mitóticos y meióticos del pez tropical Petenia splendida (Cichlidae)

open access: yesRevista de Biología Tropical, 2006
Para describir los cromosomas del cariotipo en mitosis y meiosis de la mojarra tenguayaca P. splendida, se procesaron 60 larvas y doce jóvenes (seis hembras y seis machos) procedentes de Tabasco, México. Se emplearon los procedimientos citológicos clásicos para peces pequeños y grandes, con algunas modificaciones que permitieron obtener campos ...
Arias Rodríguez, Lenin   +2 more
openaire   +6 more sources

Registro de larvas de Sebekia sp. (Pentastomida: Sebekidae) en peces de la cuenca media del río Usumacinta, Tabasco, México [PDF]

open access: yes, 2018
Commercially important fish in Tabasco, Mexico have been naturally infested with pentastomid parasite. The present research the morphology show information about the ecological indexes of infection of the larvae in three species of fish of commercial ...
Castillo- Domínguez, Alfonso   +6 more
core   +2 more sources

EFECTO DE LA 17α-METILTESTOSTERONA EN LA MASCULINIZACIÓN DE LA MOJARRA NATIVA Petenia splendida

open access: yesKuxulkab', 2017
La mojarra nativa 'Petenia splendida' (tenguayaca) es un pez dulceacuícola de importancia tradicional y comercial para el estado de Tabasco, México. Se ha observado que se reproduce a tallas muy pequeñas, impidiendo el buen crecimiento de los peces en un sistema de cultivo por lo cual se realizó un estudio para determinar la dosis necesaria para la ...
María de Jesús Contreras García   +3 more
openaire   +2 more sources

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