Results 11 to 20 of about 769 (78)

The Gonad Maturity of Female Osteochillus vittatus in the presence of Ascorbic Acid

open access: yesBiosaintifika: Journal of Biology & Biology Education, 2017
The fish’s reproduction status is affected by both fed compositions and vitamins intake lead to determine improvement of eggs quality as well as fish production. The presence of Ascorbic Acid (AA) in the cultivation ponds, might accelerate female’s gonad
Nuning Setyaningrum   +2 more
doaj   +1 more source

The use of different 17β-estradiol hormone doses and water temperatures to control cannibalism in catfish Clarias gariepinus seed

open access: yesJurnal Akuakultur Indonesia, 2020
Cannibalism is a major problem in the intensive catfish hatchery that caused high mortality. This phenomenon is allegedly due to the high level of testosterone hormones in the early larvae and seed stages. Testosterone is a maternal steroid hormone that
Hylda Khairah Putri   +3 more
doaj   +1 more source

Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis)

open access: yesLatin American Journal of Aquatic Research, 2015
A detailed study of gametes development and characterization of plasma sex steroid hormones during the maturation cycle was performed for the first time in the southern hake (Merluccius australis).
Manuel Alvarado   +3 more
doaj   +1 more source

Oogenesis of Helobdella ampullariae (Hirudinida, Glossiphoniidae) [PDF]

open access: yes, 2018
El conocimiento de la gametogénesis en Hirudinida es una herramienta importante que permite interpretar el ciclo reproductor. La ovogénesis de Helobdella ampullariae se describió en base a 30 hirudíneos recolectados en la cavidad paleal de Pomacea ...
Gullo, Bettina S., Lopretto, Estela C.
core   +4 more sources

Histología del desarrollo folicular de híbridos entre Triatoma infestans Klug, 1864 Y Triatoma platensis Neiva, 1913 (Hemiptera: Heteroptera)

open access: yesActa Biológica Colombiana, 2021
Triatoma infestans y Triatoma platensis son especies interfértiles que en ocasiones comparten ecotopos y producen híbridos fértiles naturales. El cruzamiento interespecífico podría permitir la producción de genotipos híbridos capaces de colonizar nuevos ...
Federico Gastón Fiad   +3 more
doaj  

Profile of 17ß-estradiol, vitellogenin, and egg diameter during gonad maturation process of striped catfish Pangasianodon hypophthalmus

open access: yesJurnal Akuakultur Indonesia, 2019
This study was conducted to evaluate the profile of 17ß-estradiol (E2) and vitellogenin (Vtg) in plasma and egg diameter during gonad maturity process of striped catfish Pangasianodon hypophthalmus.
Wahyu Pamungkas   +5 more
doaj   +1 more source

Ovary microanatomy and oogenesis of amphipod hyalella curvispina shoemaker 1942 [PDF]

open access: yes, 2017
El conocimiento de la gametogénesis en crustáceos permite diferenciar los estadios de desarrollo durante el ciclo reproductor e interpretar aspectos de su dinámica poblacional. Se realizó el estudio microanatómico del ovario y la ovogénesis del anfípodo
Gullo, Bettina Sandra   +1 more
core   +4 more sources

Lagartija serrana – Iberolacerta monticola (Boulenger, 1905) [PDF]

open access: yes, 2015
Reptiles - Orden Squamata - Familia Lacertidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 12-01-2005; 4-12-2006; 20-02-2007; 17-01-2008; 25-03-2008; 7-08-2009A comprehensive review of ...
Martín Rueda, José   +1 more
core   +2 more sources

Biología reproductiva de Boana pulchella y Boana punctata (Anura: Hylidae) en poblaciones simpátricas de humedales templados

open access: yesCaldasia, 2019
Boana pulchella habita principalmente climas templados y B. punctata principalmente climas tropicales, lo que permitiría suponer la presencia de estrategias reproductivas diferentes, aún en la región en la que sus poblaciones son simpátricas.
Carolina Elisabet Antoniazzi   +3 more
doaj   +1 more source

Hormone therapy for the artificial control of sexual maturity in fish culture: a review [PDF]

open access: yes, 2011
Se analiza el estado actual del control artificial de la madurez sexual de los peces de cultivo con el uso de terapia hormonal, evaluando las ventajas y desventajas de las diferentes estrategias tecnológicas disponibles.
Valdebenito Isler, Iván
core  

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