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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reproductive traits of the freshwater prawn Macrobrachium amazonicum (Decapoda: Palaemonidae) in an isolated water reservoir

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Author(s):
Nogueira, Caio S. [1] ; Perroca, Julia F. [1] ; Batista, Abner C. [2] ; Costa, Rogerio C. [1]
Total Authors: 4
Affiliation:
[1] State Paulista Univ, Fac Sci, Biol Sci Dept, Lab Biol Marine & Freshwater Shrimps, BR-17033360 Bauru, SP - Brazil
[2] State Paulista Univ, Inst Hlth Sci, Ave Marques de Sao Vicente 3001, BR-05037040 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Revista Mexicana de Biodiversidad; v. 91, OCT-DEC 2020.
Web of Science Citations: 0
Abstract

Abstract The aim of this study was to analyze the reproductive period, fecundity, egg size and reproductive output (RO) of a hololimnetic population of Macrobrachium amazonicum. The prawns were collected monthly, from May 2017 to April 2018, in a water reservoir isolated from river connections, in Severínia (20º49’31.92” S, 48º49’39.55” W), São Paulo, Brazil. Ovigerous females were preserved individually in 70% ethanol. The reproductive period was calculated based on the monthly percentage of ovigerous females. The egg mass was weighed and partially measured. The eggs were counted and classified according to the embryonic developmental stage. The reproductive output was calculated individually by dividing the dry weight of females without eggs by the mass of eggs. The reproductive period was continuous, with peaks in the dry season. Egg volume differed among stages and seasons (ANCOVA, p < 0.05), being larger in the rainy season. The reproductive output differed between seasons (rainy: 12.5 ± 4.8%; dry: 13.9 ± 5.4%, p < 0.05), as well as fecundity (rainy: 585 ± 304 eggs; dry: 613 ± 306 eggs, p < 0.05). We concluded that the reproductive traits of this population differ from those of other populations of M. amazonicum previously studied, and that these differences may be consequences of the isolation of this population. (AU)

FAPESP's process: 19/00661-3 - A comparative interdisciplinary analysis between the prawns Macrobrachium amazonicum (Heller, 1862) and Macrobrachium pantanalense (dos Santos, Hayd & anger, 2013) support the interspecific differentiation?
Grantee:Caio dos Santos Nogueira
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 18/13685-5 - Integrative analysis of the Brazilian fauna of decapod crustaceans: taxonomy, phylogenetic systematics, spermiotaxonomy, morphology of post-embryonic development, ecology and conservation
Grantee:Fernando Luis Medina Mantelatto
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 19/01308-5 - What is the impact of trawling on shrimp assembly in marine coastal areas? A temporal analysis of populations at ecosystem level on the North Coast of São Paulo
Grantee:Júlia Fernandes Perroca
Support Opportunities: Scholarships in Brazil - Doctorate