Mediterranean Feral Goat Capra hircus Linnaeus, 1758

2020 ◽  
pp. 1-11
Author(s):  
Haritakis Papaioannou ◽  
Sandro Lovari
Keyword(s):  
Capra Hircus ◽  
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

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.

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

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.

Interactions between dingoes and introduced wild ungulates: concepts, evidence and knowledge gaps

2019 ◽  
Vol 41 (1) ◽  
pp. 12 ◽  
Author(s):  
David M. Forsyth ◽  
A. David M. Latham ◽  
Naomi E. Davis ◽  
Peter Caley ◽  
Mike Letnic ◽  
...  
Keyword(s):  
Capra Hircus ◽  
Ecological Interactions ◽  
Wild Ungulates ◽  
Natural Ecosystems ◽  
Equus Asinus ◽  
Feral Dogs ◽  
Sambar Deer ◽  
Frequency Occurrence ◽  
Cervus Unicolor ◽  
Feral Goat

The dingo (Canis dingo or C. familiaris, including hybrids with feral dogs) is the apex carnivore on mainland Australia. Fifteen non-native ungulate species have established wild populations in Australia. Dingoes are managed to reduce impacts on domestic ungulates, and introduced wild ungulates are managed to reduce impacts on natural ecosystems and to minimise competition with domestic ungulates. There is speculation about the extent to which (1) dingoes limit the abundances of introduced wild ungulates, and (2) introduced wild ungulates sustain dingo populations. We reviewed the literature to identify potential ecological interactions between dingoes and introduced wild ungulates, and to synthesise evidence for interactions between dingoes and each ungulate species (including the percentage frequency occurrence (%FO) of ungulates in dingo diets). Eleven of the 15 ungulate species were recorded in the diet of dingoes, with the highest %FO occurrences reported for feral goats (73%) and cattle (60%). Two studies concluded that dingoes reduced ungulate abundances (feral goat (Capra hircus) and feral donkey (Equus asinus)), and two studies concluded that dingoes did not regulate feral pig (Sus scrofa) abundances. A fifth study concluded that dingoes exhibited a Type III functional response to increasing sambar deer (Cervus unicolor) abundances. A sixth study concluded that dingoes made relatively little use of hunter-shot sambar deer carcasses. We propose that interactions between dingoes and introduced wild ungulates depend on the sex–age classes vulnerable to dingo predation, dingo pack sizes, the availability of escape terrain for ungulates and the availability of alternative foods for dingoes. The interplay between environmental conditions and the population growth rate of ungulates, and hence their ability to sustain losses from predation, could also be important. We predict that dingoes will have most impact on the abundance of smaller ungulate species and neonates.

Accuracy of some aerial survey estimators: contrasts with known numbers

2008 ◽  
Vol 35 (4) ◽  
pp. 377 ◽  
Author(s):  
John P. Tracey ◽  
Peter J. S. Fleming ◽  
Gavin J. Melville
Keyword(s):  
Detection Probability ◽  
Aerial Survey ◽  
Capra Hircus ◽  
True Density ◽  
Density Estimates ◽  
Factors Influencing ◽  
Capture Recapture ◽  
Wildlife Populations ◽  
Helicopter Survey ◽  
Feral Goat

Density estimates are seldom examined against actual population size, hence the ability of estimators to correct for bias is unknown. Studies that compare techniques are difficult to interpret because of the uncertainty of adherence to their respective assumptions. Factors influencing detection probability, estimators that correct for bias, the validity of their assumptions and how these relate to true density are important considerations for selecting suitable methods. Here we contrasted five estimates of feral goat (Capra hircus) densities obtained from aerial surveys (strip counts, Petersen, stratified Petersen, Chao, Alho) against known densities derived from total counts. After correcting for recounting, the Alho and stratified Petersen estimators applied to helicopter surveys were the most accurate (bias = 0.08 and –0.09 respectively), which suggests that estimates were improved by correcting individual observations according to the characteristics of each observation. An approach using modified Horvitz–Thompson equations for unequal-sized units is described and is recommended to allow for this. Both the Chao (bias = 0.35) and Petersen (bias = 0.22) estimators were positively biased, which is likely to be a consequence of averaging detection probability across all observations. Helicopter survey using capture–recapture with multiple observers is recommended for estimating the density of wildlife populations. However, adjustment for the factors that influence detection probability is required.

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