Ian P. Callard

4.7k total citations
140 papers, 3.5k citations indexed

About

Ian P. Callard is a scholar working on Physiology, Nature and Landscape Conservation and Endocrinology, Diabetes and Metabolism. According to data from OpenAlex, Ian P. Callard has authored 140 papers receiving a total of 3.5k indexed citations (citations by other indexed papers that have themselves been cited), including 66 papers in Physiology, 44 papers in Nature and Landscape Conservation and 38 papers in Endocrinology, Diabetes and Metabolism. Recurrent topics in Ian P. Callard's work include Reproductive biology and impacts on aquatic species (66 papers), Hormonal and reproductive studies (36 papers) and Turtle Biology and Conservation (32 papers). Ian P. Callard is often cited by papers focused on Reproductive biology and impacts on aquatic species (66 papers), Hormonal and reproductive studies (36 papers) and Turtle Biology and Conservation (32 papers). Ian P. Callard collaborates with scholars based in United States, Thailand and United Kingdom. Ian P. Callard's co-authors include Valentine A. Lance, Shuk‐Mei Ho, Thomas J. Koob, S.W.C. Chan, Gloria V. Callard, Paul C. W. Tsang, J. H. Leathem, David H. Barad, Georgia Giannoukos and Janice L. Bolaffi and has published in prestigious journals such as Brain Research, Biochemical and Biophysical Research Communications and Endocrinology.

In The Last Decade

Ian P. Callard

139 papers receiving 3.4k citations

Peers

Ian P. Callard
Ian Mayer Norway
B. Lofts Hong Kong
Akihiro Takemura Japan
Martin P. Schreibman United States
Tracy A. Marchant Canada
Duncan S. MacKenzie United States
Gustavo M. Somoza Argentina
Stacia A. Sower United States
Gad Degani Israel
N. R. Liley Canada
Ian Mayer Norway
Ian P. Callard
Citations per year, relative to Ian P. Callard Ian P. Callard (= 1×) peers Ian Mayer

Countries citing papers authored by Ian P. Callard

Since Specialization
Citations

This map shows the geographic impact of Ian P. Callard'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 Ian P. Callard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ian P. Callard more than expected).

Fields of papers citing papers by Ian P. Callard

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ian P. Callard. 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 Ian P. Callard. The network helps show where Ian P. Callard may publish in the future.

Co-authorship network of co-authors of Ian P. Callard

This figure shows the co-authorship network connecting the top 25 collaborators of Ian P. Callard. A scholar is included among the top collaborators of Ian P. Callard 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 Ian P. Callard. Ian P. Callard is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Marquez, Emily, Nikki Traylor‐Knowles, Apolonia Novillo, & Ian P. Callard. (2011). Cloning of estrogen receptor alpha and aromatase cDNAs and gene expression in turtles (Chrysemys picta and Pseudemys scripta) exposed to different environments. Comparative Biochemistry and Physiology Part C Toxicology & Pharmacology. 154(3). 213–225. 7 indexed citations
2.
Marquez, Emily, Nikki Traylor‐Knowles, Apolonia Novillo, & Ian P. Callard. (2011). Novel cDNA sequences of aryl hydrocarbon receptors and gene expression in turtles (Chrysemys picta and Pseudemys scripta) exposed to different environments. Comparative Biochemistry and Physiology Part C Toxicology & Pharmacology. 154(4). 305–317. 5 indexed citations
3.
Kitana, Noppadon & Ian P. Callard. (2008). Effect of cadmium on gonadal development in freshwater turtle (Trachemys scripta,Chrysemys picta) embryos. Journal of Environmental Science and Health Part A. 43(3). 262–271. 30 indexed citations
4.
Callard, Ian P., et al.. (2007). Effects of reproductive activity and sex hormones on apoptosis in the epigonal organ of the skate (Leucoraja erinacea). General and Comparative Endocrinology. 154(1-3). 75–84. 8 indexed citations
5.
Callard, Ian P., et al.. (2007). Influence of reproductive activity, sex steroids, and seasonality on epigonal organ cellular proliferation in the skate (Leucoraja erinacea). General and Comparative Endocrinology. 155(1). 116–125. 16 indexed citations
6.
Callard, Ian P., et al.. (2003). Lipids and lipid-transporting proteins in Chrysemys picta: role of gonadal steroids and growth hormone in intact and hypophysectomized turtles. General and Comparative Endocrinology. 131(2). 176–184. 7 indexed citations
7.
Callard, Ian P., et al.. (2001). Cadmium: tissue distribution and binding protein induction in the painted turtle, Chrysemys picta. Comparative Biochemistry and Physiology Part C Toxicology & Pharmacology. 130(1). 41–51. 39 indexed citations
8.
Paolucci, Marina, et al.. (2001). Seasonal variation in plasma lipids, lipoproteins, apolipoprotein A-I and vitellogenin in the freshwater turtle, Chrysemys picta. Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology. 130(2). 253–269. 33 indexed citations
9.
Novillo, Apolonia, et al.. (2001). Caenorhabditis elegans as an Environmental Monitor Using DNA Microarray Analysis. Annals of the New York Academy of Sciences. 948(1). 32–42. 65 indexed citations
10.
Callard, Ian P., et al.. (2001). Phylogenetic distribution of apolipoproteins A‐I and E in vertebrates as determined by Western blot analysis. Journal of Experimental Zoology. 290(3). 255–264. 15 indexed citations
11.
Steinetz, Bernard G., et al.. (1998). Dogfish Shark (Squalus acanthias) Testes Contain a Relaxin. Journal of Andrology. 19(1). 110–115. 17 indexed citations
12.
Blackburn, Daniel G. & Ian P. Callard. (1997). Morphogenesis of placental membranes in the viviparous, placentotrophic lizardChalcides chalcides (Squamata: Scincidae). Journal of Morphology. 232(1). 35–55. 59 indexed citations
13.
Paolucci, Marina & Ian P. Callard. (1995). Distribution and characterization of apolipoproteins in Chrysemys picta plasma. Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology. 110(3). 583–588. 11 indexed citations
14.
Giannoukos, Georgia & Ian P. Callard. (1995). Reptilian (Chrysemys picta) hepatic progesterone receptors: Relationship to plasma steroids and the vitellogenic cycle. The Journal of Steroid Biochemistry and Molecular Biology. 55(1). 93–106. 21 indexed citations
15.
Callard, Ian P., et al.. (1992). Identification of vitellogenin in the little skate (Rajah erinacea). Comparative Biochemistry and Physiology Part B Comparative Biochemistry. 103(3). 699–705. 14 indexed citations
16.
Tsang, Paul C. W. & Ian P. Callard. (1992). Regulation of ovarian steroidogenesis in vitro in the viviparous shark, Squalus acanthias. Journal of Experimental Zoology. 261(1). 97–104. 21 indexed citations
17.
Callard, Ian P., et al.. (1991). Seasonal variations in oviductal morphology of the painted turtle, Chrysemys picta. Journal of Morphology. 207(1). 59–71. 20 indexed citations
18.
Callard, Ian P., et al.. (1988). Seasonal variations in oviductal activity, extensibility, and tensile strength in Chrysemys picta. General and Comparative Endocrinology. 72(3). 453–460. 8 indexed citations
19.
20.
Tsang, Paul C. W. & Ian P. Callard. (1988). In vivo steroidogenic effects of homologous pituitary ventral lobe extract in the spiny dogfish, Squalus acanthias. General and Comparative Endocrinology. 70(1). 164–168. 3 indexed citations

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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