Banca de DEFESA: VICTORIA HELEN FIGUEIREDO PAIXÃO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : VICTORIA HELEN FIGUEIREDO PAIXÃO
DATA : 27/03/2019
HORA: 14:00
LOCAL: Centro de Biociências
TÍTULO:

BIOLOGY AND REPRODUCTIVE SUCCESS OF COCCYZUS MELACORYPHUS (AVES: CUCULIDAE) IN A CAATINGA AREA.

PALAVRAS-CHAVES:

Reproduction; breeding biology; nesting; life history; drylands

PÁGINAS: 38
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The Dark-billed Cuckoo (Coccyzus melacoryphus) is a species of 136 species of the Cuculidae family, which occurs throughout Brazil. In part of its distribution performs periodic movements, as in the Caatinga. In Rio Grande do Norte, its period of permanence is related to rainy season, occurring between the months of February and June when they arrive to reproduce. Studies on the reproductive dynamics of birds in seasonal environments have been focused in temperate regions, generating a knowledge gap for neotropical regions. This research tries to understand more about the reproductive dynamics of birds from seasonal environments, describing aspects of The Dark-billed Cuckoo’s breeding biology: reproductive period, nest and egg description, posture size, incubation and nesting period. We monitored nests at intervals of 2-3 days in the Estação Ecológica do Seridó – ESEC-Seridó, during the rainy season of 2017 and 2018. We recorded 63 nests of The Dark-billed Cuckoo, 31 between March 1 and May 8, 2017 and 32 nests between February 8 and June 10, 2018. The nests were built on shrubs and trees at a mean height of 1.61 ± 0, 88 m, and the pereiro tree (Aspidosperma pyrifolium) was the main plant used as support. The nests showed a “simple/platafform” format, with sticks showing a tendency to present the outer ones larger in length and diameter than the inner ones. The eggs were short subelliptical with light green coloration (color 81 Pearl Gray by Smithe 1975). The eggs mean weight was 9.7 ± 0.9 g, the length was 28.4 ± 1.5 mm and width was 22.1 ± 1.5 mm. The mean number of nestlings per nest was 2.60 ± 0.96 (n = 32). In its breeding biology, we believe that The Dark-billed Cuckoo acts like the other members of the genus, presenting a long reproductive period when compared to birds of temperate regions, with a probable short period of incubation and of the nestlings’ permanence.

MEMBROS DA BANCA:
Externo ao Programa - 3060333 - ANDROS TAROUCO GIANUCA
Externo à Instituição - LEONARDO FERNANDES FRANÇA - UFERSA
Presidente - 1439088 - MAURO PICHORIM