Breeding biology of Chestnut-capped Blackbirds in rice paddies in southern Brazil

Cirne, Maximiano Pinheiro; Iborra, Germán M. López

doi:10.1648/0273-8570-76.4.411

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…In fact, the 32% of seed destroyed by goldfinches at that site compares favorably to the highest well-documented seed losses attributed to R. conicus (30-40%) at sites where the insect provided effective biological control (Kelly and McCallum 1995). While it is likely that most species of avian granivores are beneficial in agroecosystems, especially because most species also eat considerable quantities of invertebrates during the breeding season, the most prominent studies of granivores are those on birds as agricultural pests (Weatherhead et al 1982, Elliott and Lenton 1989, Dolbeer 1990, Basili and Temple 1999, Avery et al 2001, Blackwell and Dolbeer 2001, McWilliam and Cheke 2004, Cirne and Lopez-Iborra 2005, Hagy et al 2008. Future research should examine more fully the costs and benefits of avian granivory in agricultural settings.…”

Section: Definitions and Backgroundmentioning

confidence: 99%

The Need to Quantify Ecosystem Services Provided by Birds

Wenny

DeVault²,

Johnson

et al. 2011

The Auk

302

213

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Section: Definitions and Backgroundmentioning

confidence: 99%

The Need to Quantify Ecosystem Services Provided by Birds

Wenny

DeVault²,

Johnson

et al. 2011

The Auk

302

213

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Effects of Experimental Lead Exposure on Testis of the Chestnut Capped Blackbird Chrysomus ruficapillus

Leidens

Bianchini

Varela

et al. 2018

Bull Environ Contam Toxicol

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Lead (Pb) effects on testis histology, as well as sperm quality and oxidative status were evaluated in male Chestnut Capped Blackbird (Chrysomus ruficapillus). Wild blackbirds were captured, immediately sampled (field group) or kept in captivity and treated with a single intraperitoneal injection of saline solution (control) or saline solution with Pb acetate (50 or 100 mg/kg Pb). Seven days after injection, whole blood, ductus deferens and testis samples were collected. Increased Pb concentrations were observed in whole blood and testis of Pb-exposed blackbirds with respect to those from field and control blackbirds. Sperm cells of Pb-exposed blackbirds showed loss of membrane integrity, mitochondrial functionality, and DNA integrity. Also, oxidative damage was observed in testis of blackbirds injected with 100 mg/kg Pb. These findings indicate that Pb is accumulated in testis of C. ruficapillus, inducing severe morphological and biochemical injury that can compromise the reproductive performance of male blackbirds. Although the exposure scenario (Pb acetate, high dosage and intraperitoneal injection) tested in the present study would likely not occur in the wild, it was adequate to show potential and relevant toxic effects of Pb in wild birds.

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A history of ecological studies of birds in rice fields

Elphick

2015

J Ornithol

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Breeding biology of Chestnut-capped Blackbirds in rice paddies in southern Brazil

Cited by 6 publications

References 7 publications

The Need to Quantify Ecosystem Services Provided by Birds

The Need to Quantify Ecosystem Services Provided by Birds

Effects of Experimental Lead Exposure on Testis of the Chestnut Capped Blackbird Chrysomus ruficapillus

A history of ecological studies of birds in rice fields

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