P O'Callaghan

457 total citations
14 papers, 346 citations indexed

About

P O'Callaghan is a scholar working on Ecology, Agronomy and Crop Science and Small Animals. According to data from OpenAlex, P O'Callaghan has authored 14 papers receiving a total of 346 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Ecology, 8 papers in Agronomy and Crop Science and 5 papers in Small Animals. Recurrent topics in P O'Callaghan's work include Wildlife Ecology and Conservation (9 papers), Reproductive Physiology in Livestock (7 papers) and Animal Behavior and Welfare Studies (4 papers). P O'Callaghan is often cited by papers focused on Wildlife Ecology and Conservation (9 papers), Reproductive Physiology in Livestock (7 papers) and Animal Behavior and Welfare Studies (4 papers). P O'Callaghan collaborates with scholars based in Australia and India. P O'Callaghan's co-authors include Michael McGowan, V. Nicolson, R. I. Cox, Ro Osawa, Susan J Johnston, S. D. Johnston, Stephen D. Johnston, J. D. Curlewis, Susan M. Haig and Bronwyn A. Houlden and has published in prestigious journals such as Reproduction, Reproduction Fertility and Development and Australian Journal of Zoology.

In The Last Decade

P O'Callaghan

13 papers receiving 331 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
P O'Callaghan Australia 9 159 127 105 97 86 14 346
Jürgen Streich Germany 9 141 0.9× 87 0.7× 117 1.1× 90 0.9× 60 0.7× 10 420
Nikorn Thongtip Thailand 12 98 0.6× 100 0.8× 139 1.3× 182 1.9× 175 2.0× 39 390
Gerardo Espeso Spain 12 165 1.0× 45 0.4× 200 1.9× 190 2.0× 164 1.9× 32 478
H. Ebedes South Africa 6 93 0.6× 50 0.4× 86 0.8× 136 1.4× 93 1.1× 15 320
W. Moraes Brazil 6 99 0.6× 70 0.6× 77 0.7× 64 0.7× 49 0.6× 15 296
Anuchai Pinyopummin Thailand 11 56 0.4× 97 0.8× 145 1.4× 220 2.3× 204 2.4× 41 421
A. Holzmann Austria 9 39 0.2× 64 0.5× 54 0.5× 213 2.2× 164 1.9× 23 419
Antonio Pulido‐Pastor Spain 12 57 0.4× 95 0.7× 88 0.8× 220 2.3× 192 2.2× 17 354
T. E. Trigg Australia 16 118 0.7× 395 3.1× 188 1.8× 104 1.1× 83 1.0× 24 583
S. Borragán Spain 13 154 1.0× 78 0.6× 114 1.1× 333 3.4× 281 3.3× 35 636

Countries citing papers authored by P O'Callaghan

Since Specialization
Citations

This map shows the geographic impact of P O'Callaghan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by P O'Callaghan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P O'Callaghan more than expected).

Fields of papers citing papers by P O'Callaghan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P O'Callaghan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by P O'Callaghan. The network helps show where P O'Callaghan may publish in the future.

Co-authorship network of co-authors of P O'Callaghan

This figure shows the co-authorship network connecting the top 25 collaborators of P O'Callaghan. A scholar is included among the top collaborators of P O'Callaghan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with P O'Callaghan. P O'Callaghan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

14 of 14 papers shown
1.
Johnston, Stephen D., et al.. (2004). Semen-induced luteal phase and identification of a LH surge in the koala ( Phascolarctos cinereus ). Reproduction. 128(5). 629–634. 48 indexed citations
2.
Johnston, S. D., Michael McGowan, P O'Callaghan, et al.. (2003). Birth of Koalas Phascolarctos cinereus at Lone Pine Koala Sanctuary following artificial insernination. International Zoo Yearbook. 38(1). 160–172. 30 indexed citations
3.
Johnston, Stephen D., et al.. (2003). 92. Semen-induced luteal phase in the koala. Reproduction Fertility and Development. 15(9). 92–92. 1 indexed citations
4.
McGowan, Michael, et al.. (2000). Studies of the oestrous cycle, oestrus and pregnancy in the koala (Phascolarctos cinereus). Reproduction. 120(1). 49–57. 32 indexed citations
5.
Johnston, Susan J, et al.. (2000). Optimal physicochemical conditions for the manipulation and short-term preservation of koala (Phascolarctos cinereus) spermatozoa. Reproduction. 118(2). 273–281. 41 indexed citations
6.
McGowan, Michael, et al.. (2000). Optimal physicochemical conditions for the manipulation and short-term preservation of koala (Phascolarctos cinereus) spermatozoa. Reproduction. 118(2). 273–281. 27 indexed citations
7.
Johnston, Susan J, Michael McGowan, P O'Callaghan, R. I. Cox, & V. Nicolson. (2000). Natural and artificial methods for inducing the luteal phase in the koala (Phascolarctos cinereus). Reproduction. 120(1). 59–64. 26 indexed citations
8.
McGowan, Michael, et al.. (2000). Natural and artificial methods for inducing the luteal phase in the koala (Phascolarctos cinereus). Reproduction. 120(1). 59–64. 7 indexed citations
9.
McGowan, Michael, et al.. (2000). Studies of the oestrous cycle, oestrus and pregnancy in the koala (Phascolarctos cinereus). Reproduction. 120(1). 49–57. 56 indexed citations
10.
Johnston, S., Michael McGowan, P O'Callaghan, et al.. (1999). Birth of koala pouch young following artificial insemination. Queensland's institutional digital repository (The University of Queensland). 30(7). 135–1386. 1 indexed citations
11.
Johnston, S., et al.. (1997). Evidence for reflex ovulation in the koala. Queensland's institutional digital repository (The University of Queensland). 261(2). 33–33. 1 indexed citations
12.
Johnston, S. D., et al.. (1997). Characteristics of koala ( Phascolarctos cinereus adustus ) semen collected by artificial vagina. Reproduction. 109(2). 319–323. 20 indexed citations
13.
Johnston, S. D., P O'Callaghan, & Michael McGowan. (1996). Seminal characteristics of koala ejaculates collected using an artificial vagina. Queensland's institutional digital repository (The University of Queensland). 2. 2–4. 5 indexed citations
14.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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