scholarly journals Biology and Impacts of Pacific Island Invasive Species. 9.Capra hircus, the Feral Goat (Mammalia: Bovidae)

2013 ◽  
Vol 67 (2) ◽  
pp. 141-156 ◽  
Author(s):  
Mark W. Chynoweth ◽  
Creighton M. Litton ◽  
Christopher A. Lepczyk ◽  
Steven C. Hess ◽  
Susan Cordell
Keyword(s):  
Invasive Species ◽  
Capra Hircus ◽  
Pacific Island ◽  
Feral Goat

Size and density of a feral goat Capra hircus population in a protected area in the Pyrenees

2013 ◽  
Vol 9 (3) ◽  
Author(s):  
Juan Herrero ◽  
Olatz Fernández ◽  
Carlos Prada ◽  
Alicia García-Serrano
Keyword(s):  
Protected Area ◽  
Capra Hircus ◽  
Feral Goat

Biology and Impacts of Pacific Island Invasive Species. 10.Iguana iguana, the Green Iguana (Squamata: Iguanidae)

2013 ◽  
Vol 67 (2) ◽  
pp. 157-186 ◽  
Author(s):  
Wilfredo Falcón ◽  
James D. Ackerman ◽  
Wilnelia Recart ◽  
Curtis C. Daehler
Keyword(s):  
Invasive Species ◽  
Pacific Island ◽  
Iguana Iguana ◽  
Green Iguana

Biology and Impacts of Pacific Island Invasive Species. 7. The Domestic Cat (Felis catus)

2012 ◽  
Vol 66 (2) ◽  
pp. 173-212 ◽  
Author(s):  
David Cameron Duffy ◽  
Paula Capece
Keyword(s):  
Invasive Species ◽  
Felis Catus ◽  
Domestic Cat ◽  
Pacific Island

Prenatal growth and estimation of fetal age in the Australian feral goat

1988 ◽  
Vol 39 (4) ◽  
pp. 729 ◽  
Author(s):  
BJ McDonald ◽  
PK O'Rourke ◽  
JA Connell ◽  
WA Hoey
Keyword(s):  
Body Weight ◽  
Vertebral Column ◽  
Prenatal Development ◽  
Capra Hircus ◽  
Column Length ◽  
Third Trimester ◽  
Relative Growth ◽  
Prenatal Growth ◽  
Quadratic Response ◽  
Feral Goat

The prenatal development of the conceptus in the Australian feral goat (Capra hircus) was studied in 47 does containing 89 fetuses of known gestational age. Quantification of the growth of the fetus allowed the development of a number of predictors of fetal age. The effect of age of fetus was highly significant for the variables body weight, crown-rump straight and curved length, vertebral column length, thorax circumference, forelimb length and hindlimb length (P < 0.01). A quadratic response curve using loge of fetal age accounts for most of the variation in the log, of each fetal measurement (R2 = 0.991 to 0.995). The prenatal growth of these fetal parameters was partitioned using the regressions. There was little difference between the relative growth of crown-rump straight and curved length, vertebral column length and the thorax circumference over the trimesters of gestation. Growth of the limbs tended to be greater in the third trimester when compared with the former parameters. As might be expected from work in other species, 79% of the growth in fetal body weight occurred in the last trimester, and this exceeded the relative growth of all other characters during this period. There was marked (P < 0.01) increase in the weight of the empty uterus up to day 95, after which no change occurred.

Feral goats (Capra hircus L.) in the Macleay River gorge system, north-eastern New South Wales, Australia. II. Impacts on rainforest vegetation

2005 ◽  
Vol 32 (2) ◽  
pp. 111
Author(s):  
Philip Pisanu ◽  
Paul Bayne ◽  
Robert Harden ◽  
Ann Eggert
Keyword(s):  
Large Scale ◽  
Plant Density ◽  
Initial Density ◽  
River System ◽  
Capra Hircus ◽  
South Wales ◽  
Species Abundances ◽  
High Conservation ◽  
Scale Experiment ◽  
Feral Goat

The impacts of feral goats in rainforests and thickets of the Macleay River system were studied. Rainforest floristics and diversity and goat browsing were measured over five years in a large-scale experiment with two experimental controls (density <1 goat km–2 and density ~20 goats km–2), and a goat-removal treatment (670-ha exclosure, initial density ~20 goats km–2). Feral goats browsed forb, shrub, tree and vine species. Sites with many goats were browsed at significantly higher levels than sites from which goats were removed and sites where goats occurred at very low density (<1 goat km–2). Contrary to findings in other studies, no plant species declined substantially where goat densities remained high throughout the study. Only the native forb Urtica incisa increased markedly following removal of goats. High goat numbers were not linked to increased exotic species abundances. At the community scale, species richness, diversity and evenness did not vary substantially among treatments in any year, nor did ordinations of sites (multidimensional scaling) reveal any pattern of site similarity between years that could be related to either goat presence or absence. Rainfall may have influenced plant density and masked the effects of feral goats. Rainforests in the region appear to be resilient to browsing under present feral goat densities, probably because goats feed predominantly in adjacent grassy woodlands and forests. However, we recommend a precautionary approach to feral goat management as these rainforests and thickets are of high conservation value.

Introduction of the Proserpine rock-wallaby Petrogale persephone from the Queensland mainland to nearby Hayman Island.

2003 ◽  
Vol 25 (1) ◽  
pp. 61 ◽  
Author(s):  
PM Johnson ◽  
BJ Nolan ◽  
DN Schaper
Keyword(s):  
Video Surveillance ◽  
Capra Hircus ◽  
Non Invasive ◽  
Feral Goat ◽  
Site Release ◽  
Introduced Population

Between 1998 and 2002, 27 ‘endangered’ Proserpine rock-wallabies Petrogale persephone were introduced from the Queensland mainland to Hayman Island. Site release selection was based on faunal, botanical, geological and ecological surveys carried out before the release. The eradication of a feral herbivorous competitor, the feral goat (Capra hircus), allowed the introduction to proceed. Eagle predation in the early part of the introduction necessitated all further introductions be carried out by soft release. Between 1999 and 2000, monitoring and non-invasive video surveillance has shown that this introduced population is breeding.

Age, Hair Colour, Live Weight and Fertility of Two Samples of Australian Feral Goat, Capra Hircus.

1981 ◽  
Vol 8 (3) ◽  
pp. 549 ◽  
Author(s):  
PJ Holst
Keyword(s):  
New South ◽  
Live Weight ◽  
Carcass Weight ◽  
Capra Hircus ◽  
Corpora Lutea ◽  
Hair Colour ◽  
South Wales ◽  
Two Samples ◽  
Dressing Percentage ◽  
Feral Goat

Feral goats are slaughtered commercially in Australia, and are used in Angora backcrossing programmes. 327 goats from Queensland and 182 from New South Wales were slaughtered at the same abattoir in Mar. and Nov. 1973 resp. For the 2 groups resp., live weight of females averaged 17.93 plus or minus 4.48 to 31.08 plus or minus 5.56 and 24.65 plus or minus 5.77 to 39.20 plus or minus 5.95 kg according to age, live weight of males (excluding fully grown animals) 22.09 plus or minus 3.49 to 34.14 plus or minus 4.63 and 31.03 plus or minus 8.71 to 52.12 plus or minus 6.46 kg, carcass weight of females 9.22 plus or minus 2.54 to 14.95 plus or minus 2.52 and 11.12 plus or minus 2.45 to 17.25 plus or minus 2.49 kg, carcass weight of males 11.09 plus or minus 2.01 to 22.64 plus or minus 3.82 and 14.83 plus or minus 4.47 to 24.80 plus or minus 2.59 kg (excluding fully grown males in the 2nd group), dressing percentage of females 48.1-51.4 and 44.0-45.1, dressing percentage of males (excluding fully grown animals) 49.3-50.2 and 47.6-47.8, percentage of females with corpora lutea 81.8-100 and 50-65.2, number of corpora lutea per cycling female 1.17-2.08 and 1.45-2.00, percentage of females with embryos 18.2-38.5 and 5.9-33.3, and percentage of females with foetuses 7.7-13.6 and 16.7-66.7. Values for the last 4 traits were highest for females with 2, 4 or 6 teeth.

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