Banca de QUALIFICAÇÃO: VANESSA CONCEIÇÃO COIMBRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : VANESSA CONCEIÇÃO COIMBRA
DATE: 25/08/2025
TIME: 10:00
LOCAL: Ambiente virtual
TITLE:

ANALYSIS OF THE LARVAL DEVELOPMENT OF THE HYBRID OF
Astyanax bimaculatus AND Moenkhausia oligolepis SPECIES

KEY WORDS:

hybridization; larval morphometry; ontogenies

PAGES: 50
BIG AREA: Ciências Biológicas
AREA: Fisiologia
SUBÁREA: Fisiologia Geral
SUMMARY:

This study aims to analyze and compare the larval development of the hybrid between Astyanax bimaculatus and Moenkhausia oligolepis, two native species with potential for aquaculture. Hybridization will be performed in order to evaluate productive advantages and understand morphological and histological aspects of the hybrid larvae in relation to the parental ones. The study involved hormonal induction, collection and fertilization of gametes, incubation and rearing of larvae under controlled conditions, in addition to morphometric, morphological and histological analyses at different stages of larval development (larval yolk, pre-flexion, flexion and post-flexion). The methodology included detailed body measurements, photodocumentation and statistical analyses for comparison between groups. Preliminary results demonstrated progressive growth in the larvae of Astyanax bimaculatus, with records of important morphological changes such as the disappearance of the yolk, formation of fins, pigmentation and flexion of the notochord. The analyses also allowed the establishment of typical development patterns for each stage. The study is relevant for the improvement of larviculture techniques, reproductive control and assessment of possible environmental risks. Understanding the characteristics of hybrids can contribute to sustainable aquaculture and management strategies for native fisheries resources.
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COMMITTEE MEMBERS:
Presidente - ***.073.508-** - DIÓGENES HENRIQUE DE SIQUEIRA SILVA - UNESP
Interna - ***.455.620-** - FERNANDA CARLINI CUNHA DOS SANTOS - UFVJM
Externo à Instituição - NIVALDO FERREIRA DO NASCIMENTO - UFRPE