• Professor of Biological Sciences, Lehman College of the City University of New York
• Director of Lehman College's Laboratory for Marine and Estuarine Research (LaMER).
• Advisory Board Member, The National Institutes of Health's and Minority Access to Research Careers Programs at Lehman College
• Professor, Biology Ph.D. Program, Graduate School & University Center, City University of New York
• Professor Rachlin has been elected a Fellow of The Linnean Society of London, and has prepared a transcription of the

original Darwin/Wallace 1858 Paper on the Origin of Species that was read before the Linnean Society  July 1, 1858.

How to reach me:

• E-mail: rachlin@lehman.cuny.edu or wolfe1936@aol.com
• Office: Room 233 Davis Hall, (718) 960-8239
• LaMER Laboratory: Rooms 231-A & 231-B, Davis Hall

Education:

• B.S. in Biology, 1957, The City College of New York
• M.S. in Biology, 1962, New York University
• Ph.D. in Biology, 1967, New York University

Research Interests:

• Fish Ecology - Population Dynamics and Niche Overlap
• Fish Systematics - Phylogeny and Cytogenetics
• Aquatic Ecology
• Estuarine Ecology
• Fish and Invertebrate sub-fossils from an archaeological site, Ghazi Shah, Pakistan

The long range activities of this laboratory are to understand the phylogenetic relationships, interactions, and general life histories of both freshwater and marine aquatic organisms. Among the techniques employed are the use of cytogenetics in studies of the interrelationships of monophyletic genera and species, mathematical models for evaluating population dynamics and life histories, and the development of new approaches for the understanding of resource partitioning in aquatic environments. We will also be exploring the use of high-end computer graphics for studies of the comparative morphology of aquatic organisms, and to develop virtual models for studies of form and function.

Selected Publications:

• Cloherty, T.M. and J.W. Rachlin. 2011. Physicochemical and shoreline development factors affecting lake littoral benthic macroinvertebrates. J. Freshwater Ecology (In Press). DOI:10.1080/02705060.2011.588435
• Warkentine, B.E. and J.W. Rachlin. 2010. The First Record of Palaemon macrodactylus from the Eastern Coast of North America. Northeastern Naturalist, 17(1): 91-102.
• Rachlin, J.W., B.E. Warkentine, and A. Pappantoniou. 2008. Use of a parsimony algorithm as a method for evaluating ichthyofaunal distribution and co-occurrence in an urban stream.
  Journal of Freshwater Ecology, 23 (1): 1-11.
• Rachlin, J.W., B.E. Warkentine, and A. Pappantoniou. 2007. An evaluation of the ichthyofauna of the Bronx River, a resilient urban waterway. Northeastern Naturalist, 14(4): 531-544.
• Schreibman, M., J.W. Rachlin, and B.E. Warkentine. 2004. Examining Chile’s tenth region and the tri-state estuary models for understanding issues in the management of world fisheries. Flacso, Santiago Chile. In Press.
• Nickum, J.G., H.L. Bart, Jr., P.R. Bowser, I.E. Greer, C. Hubbs, J.A. Jenkins, J.R. MacMillan, J.W. Rachlin, J.D. Rose, P.W. Sorensen, J.R. Tomasso. 2004. Guidelines for the Use of Fishes in Research. American Fisheries Society, Bethesda, Maryland, 53 pages.
• Flam, L., J.W. Rachlin, P. Matthews, and M.A. Mirani. 2000. Ghazi Shah Excavations 1997-1998: An Interim Report. Pakistan Archaeology, 29 : In Press.
• Rachlin, J.W., & B.E. Warkentine. 1997. Comments on the population dynamics of the marine isopod Politolana concharum collected by the Atlantic sturgeon, Acipenser oxyrhynchus. Crustaceana, 70(3): 368-379
• Johnson, J.H., D.S. Dropkin, B.E. Warkentine, J.W. Rachlin, and W.D. Andrews. 1977. Food habits of the Atlantic Sturgeon off the Central New Jersey Coast. Transactions of the American Fisheries Society, 126: 166-170.
• Rachlin, J.W., & B.E. Warkentine. 1990. Reexamination of some population dynamics of the silver hake in the New York Bight. Northeastern Environmental Sciences 9(1/2): 66-68.
• Warkentine, B.E., & J.W. Rachlin. 1989. The winter offshore diet of the Atlantic silverside, Menidia menidia. Copeia (1989), No. 1:195-198.
• Rachlin, J.W., B.E. Warkentine, & A. Pappantoniou. 1989. The use of niche breadth and proportional similarity in feeding to stipulate resource strategies in fish. Journal of Freshwater Ecology, 5(1): 103-112.
• Rivlin, K.A., J.W. Rachlin,& B.E. Warkentine. 1988. G-banding of the chromosomes of Apogon maculatus and A. pseudomaculatus (Perciformes: Apogonidae). Annals of the New York Academy of Sciences, 259: 160-163.
• Warkentine, B.E., & J.W. Rachlin. 1988. Analysis of the dietary preference of the sand flounder, Scophthalmus aquosus, from the New Jersey Coast. Annals of the New York Academy of Sciences, 529: 164-168.
• Rachlin, J.W., & B.E. Warkentine. 1987. The use of museum ichthyological holdings for initial diet studies. Copeia (1987), No. 1: 214-216.
• Rachlin, J.W., A. Pappantoniou, & B.E. Warkentine. 1987. A bias estimator of the environmental resource base in diet preference studies with fish. Journal of Freshwater Ecology, 4(1): 23-31.
• Warkentine, B.E., C.L. Smith, & J.W. Rachlin. 1987. A reevaluation of the karyotype of the Atlantic silverside, Menidia menidia. Copeia (1987), No. 1: 222-224.
• Rivlin, K.A., J.W. Rachlin, & G. Dale. 1987. Intraspecific chromosomal variation on Apogon binotatus (Perciformes: Apogonidae) from the Florida Keys and St. Croix. Annals of the New York Academy of Sciences, 494: 263-265.
• Rivlin, K.A., G. Dale, & J.W. Rachlin. 1986. Karyotypic analysis of Apogon (Apogon) pseudomaculatus, Apogon (Nectamia) nubilis, and Phaeoptyx pigmentaria, and implications to the taxonomic status of the genera Apogon and Phaeoptyx. Annals of the New York Academy of Sciences, 463: 211-213.