Moreno, K., Medrano, S., Gosliner, T.M., Wilson, N.G., Krug, P.J. and Á.A. Valdés. Phylogenetic systematics of the genus Cyerce Bergh, 1871 (Mollusca, Heterobranchia, Sacoglossa, Caliphyllidae) from the Pacific and Indian oceans with descriptions of ten new species. In review.

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Martín-Hervás*, M.R., Carmona, L., Krug, P.J., Gosliner, T.M., Cervera, J.C., and M.A. Malaquias. Origin and biogeography of the colourful sap-sucking sea slugs genus Thuridilla Bergh, 1872 (Mollusca, Gastropoda, Heterobranchia). In review.

 

Scesa, P., Nguyen*, H., Weiss*, P., Rodriguez*, A., Garchow*, M. Ohlemacher, S.I., Prappas*, E., Caplins, S.A., Bewley, C.A., Bohnert, L., Zellmer, A.J., Wood, E., Schmidt, E.W. and P.J. Krug. Defensive polyketides produced by an abundant gastropod are candidate keystone molecules in estuarine ecology. Science Advances, 10, eadp8643.

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Lin, Z., Li, F., Krug, P.J, and E.W. Schmidt. 2024. The polyketide to fatty acid transition in the evolution of animal lipid metabolism. Nature Communications, 15: 236.

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Kelly, R.P., Klinger T., Krug P.J., and J.J. Meyer. 2024. Between the Tides in California. University of Washington Press: Seattle. (328 pp.)  More information here.

- for more information, check out this interview or this review about our new book on the intertidal and beaches of California!

 

Moreno, K., Rico, D.M.*, Middlebrooks, M., Medrano, S., Valdés, Á.A., and P.J. Krug. 2023. A cryptic radiation of Caribbean sea slugs: integrative analysis indicates Cyerce "antillensis" (Sacoglossa: Caliphyllidae) is six species. Zoological Journal of the Linnean Society, 200: 940–979. Weblink (https://doi.org/10.1093/zoolinnean/zlad111)

Dryad data repository: //doi:10.5061/dryad.gxd2547rw

 - see news story about naming a new species in honor of colleague, Dr. Skip Pierce!

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Li, F., Lin, Z., Krug, P.J, Catrow, J.L., Cox, J.E., and E.W. Schmidt. 2023. Animal FAS-like polyketide synthases produce diverse polypropionates. Proceedings of the National Academy of Sciences USA, 120: e2305575120.  (https://doi.org/10.1073/pnas.2305575120)
 

Martín-Hervás*, M.R., Carmona, L., Jensen, K.R., Krug, P.J, Vitale, F., and J.L. Cervera. 2023. Molecular insights into the global phylogeny of Elysia Risso, 1818 (Gastropoda, Heterobranchia) with a focus on the European seas. Zoological Journal of the Linnean Society, 200: 670-689. Weblink (https://doi.org/10.1093/zoolinnean/zlad086)

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Rodriguez*, A. K. and P.J. Krug. 2022. Ecological speciation by sympatric host shifts in a clade of herbivorous sea slugs, with introgression and localized mitochondrial capture between species. Molecular Phylogenetics & Evolution, 174: 107523. PDF (https://doi.org/10.1016/j.ympev.2022.107523). Dryad data repository: //doi:10.5061/dryad.vmcvdncwb

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Krug, P.J, Caplins, S.A., Algoso*, K., Thomas*, K., Valdés, Á.A., Wade, R., Wong, N.L., Eernisse, D.J., and K.M. Kocot. 2022. Phylogenomic resolution of the root of Panpulmonata, a hyperdiverse radiation of gastropods: new insight into the evolution of air breathing. Proceedings of the Royal Society B, 289: 20211855.  (https://doi.org/10.1098/rspb.2021.1855) 
Dryad data repository: //doi.org/10.5061/dryad.q83bk3jkk
 

Krug, P.J, Wares, J.P., and J.D. Allen. 2021. Adaptive and plastic responses to environmental variation: Introduction to a virtual symposium in The Biological Bulletin. Biological Bulletin, 241: 1–3. Weblink (https://doi.org/10.1086/716013)

 

Krug, P.J, Shimer*, E., and V.A. Rodriguez*. 2021. Differential tolerance and seasonal adaptation to temperature and salinity stress at a dynamic range boundary between estuarine gastropods. Biological Bulletin, 241: 105–122. Weblink

(https://doi.org/10.1086/715845).

 

Martín-Hervás, M.R., Carmona, L., Malaquias, M., Krug, P.J, Gosliner, T.M., and Cervera, J.L. 2021. A molecular phylogeny of Thuridilla Bergh, 1872 sea slugs (Gastropoda, Sacoglossa) reveals a case of flamboyant and cryptic radiation in the marine realm. Cladistics, 37: 647–676. Weblink (https://doi.org/10.1111/cla.12465)

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Torres, J., Lin, Z., Winter, J., Krug, P.K., and E. Schmidt. 2020. Animal biosynthesis of complex polyketides in a photosynthetic partnership. Nature Communications, 11: 2882. Weblink

 

Galvão Filho, H., Paulay, G., and P.J. Krug. 2019. Eggs sunny-side up: A new species of Olea, an unusual oophagous sea slug (Gastropoda: Heterobranchia: Sacoglossa), from the western Atlantic. Zootaxa, 4614: 541-565.  Weblink

  - read press coverage here

 

Medrano, S., Krug, P.J., Gosliner, T.M., Kumar, A.B., and A.A. Valdés. 2019. Molecular data reveal that color variations in Polybranchia Pease, 1860 (Mollusca: Gastropoda: Sacoglossa) constitute different psedocryptic species. Zoological Journal of the Linnean Society, 186: 76–115. Weblink

 

McCarthy, J.D., Krug, P.J., and A.A. Valdés. 2019. Integrative systematics of Placida cremoniana Trinchese, 1892) (Gastropoda, Heterobranchia, Sacoglossa) reveals multiple pseudocryptic species. Marine Biodiversity, 49: 357–371. (doi.org/10.1007/s12526-017-0812-2) PDF

 

Krug, P.J., Wong, N.L.W., Medina, M., Gosliner, T.M., and A.A. Valdés. 2018. Cryptic speciation yields remarkable mimics: a new genus of sea slugs that masquerade as toxic algae (Caulerpa spp.) Zoologica Scripta, 47: 699–713. PDF  supplementary files  

  - featured in National Geographic

  - one of the top 20 most downloaded papers in the journal for 2018

 

Krug, P.J., Berriman*, J.S., and A.A. Valdés. 2018. Phylogenetic systematics of the shelled sea slug genus Oxynoe Rafinesque, 1814 (Heterobranchia: Sacoglossa), with integrative descriptions of seven new species. Invertebrate Systematics, 32: 950–1003. http://www.publish.csiro.au/IS/IS17080

 

Berriman*, J.S., Ellingson, R.A., Awbrey*, J.D., Rico*, D.M., Valdés, A.A., Wilson, N.G., Aguilar, A., Herbert, D.G., Hirano, Y.M., Trowbridge, C.D., and P.J. Krug. 2018. A biting commentary: Integrating tooth characters with molecular data doubles known species diversity in a lineage of sea slugs that consume “killer algae.” Molecular Phylogenetics & Evolution, 126: 356–370. PDF  Dryad data repository, doi.org/10.5061/dryad.ch6b3.

 

Oladi, M., Nasrolahi, A., Ahmadzadeh, F., Alizadeh, O., and P.J. Krug. 2018. Molecular confirmation of the occurrence of Elysia cf. tomentosa (Mollusca, Heterobranchia) in the Persian Gulf. Zoology in the Middle East, 64: 124–130.  PDF

 

Krug, P.J., Vendetti, J.E., and A.A. Valdés. 2016. Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region. Zootaxa, 4148: 1–137. PDF part 1  part 2 

(doi: 10.11646/zootaxa.4148.1.1)

 

Goodheart, J., Ellingson, R., Vital, X., Galvao-Filho, H., McCarthy, J., Medrano, S., Bhave, V., Garcia-Mendez, K., Jimenez, L., Lopez, G., Hoover, C., Awbrey*, J., DeJesus*, J., Gowacki, W., Krug, P.J., and A.A. Valdés. 2016. Identification guide to the heterobranch sea slugs (Mollusca: Gastropoda) from Bocas del Toro, Panama. Marine Biodiversity Records, 9:56. PDF (31 pages; doi: 10.1186/s41200-016-0048-z)

 

Ellingson*, R.A. and P.J. Krug. 2016. Reduced genetic diversity and increased reproductive isolation follow population-level loss of larval dispersal in a marine gastropod. Evolution, 70: 18-37.  PDF [Cover article]

(doi:10.1111/evo.12830) Dryad data repository: dx.doi.org/10.5061/dryad.87k2p

 

Krug, P.J., Vendetti, J.E., Ellingson, R.A., Trowbridge, C.D., Hirano, Y.M., Trathen*, D.Y., Rodriguez*, A.K., Swennen, C., Wilson, N.G., and A.A. Valdés. 2015. Species selection favors dispersive life histories in sea slugs, but higher per-offspring investment drives shifts to short-lived larvae. Systematic Biology, 64: 983–999. PDF [Cover article]

(doi: 10.1093/sysbio/syv046) Dryad data repository: dx.doi.org/10.5061/dryad.88mv3.2

 

Jensen, K.R., Krug P.J., DuPont A., and M. Nishina. 2014. A review of taxonomy and phylogenetic relationships within Costasiella (Mollusca, Heterobranchia, Sacoglossa), with description of a new species. Journal of Molluscan Studies, 80: 562–574. (doi:10.1093/mollus/eyu048) PDF

 

Krug, P.J., Vendetti, J.E., Retana*, J., Rodriguez*, A., Hirano, Y., and C.D. Trowbridge. 2013. Integrative species delimitation in photosynthetic sea slugs reveals twenty candidate species in three nominal species studied for drug discovery, plastid symbiosis or biological control. Molecular Phylogenetics & Evolution, 69: 1101–1119.

(doi: 10.1016/j.ympev.2013.07.009) PDF

 

Kocot, K.M.,  Halanych, K., and P.J. Krug. 2013. Phylogenomics supports Panpulmonata: Resolving key evolutionary steps in a major radiation of gastropod molluscs. Molecular Phylogenetics & Evolution, 69: 764–771.

(doi: 10.1016/j.ympev.2013.07.001) PDF

 

Romero*, M.R., Phuong*, M., Bishop, C.D., and P.J. Krug. 2013. Differential function of nitric oxide signaling during habitat choice by two larval morphs of the sea slug Alderia willowi: mechanistic insight into evolutionary transitions in dispersal strategies. Journal of Experimental Biology, 216: 1114-1125. (doi: 10.1242/jeb.080747) PDF

 

Marshall, D.J., Krug, P.J., Kupriyanova, E., Byrne, M., and R.B. Emlet. 2012. The biogeography of marine invertebrate life histories. Annual Reviews of Ecology, Evolution & Systematics, 43: 97-114.

(doi: 10.1146/annurev-ecolsys-102710-145004) PDF

 

Krug, P.J., Gordon*, D., and M. Romero*. 2012. Seasonal polyphenism in larval type: Rearing environment influences the development mode expressed by adults in the sea slug Alderia willowi. Integrative & Comparative Biology, 52: 161-172. (doi: 10.1093/icb/ics059) PDF

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Vendetti, J.E., Trowbridge, C.D., and P.J. Krug. 2012. Poecilogony and population genetic structure in Elysia pusilla (Heterobranchia: Sacoglossa), and reproductive data for five sacoglossans that express dimorphisms in larval development. Integrative & Comparative Biology, 52: 138-150. (doi: 10.1093/icb/ics077) PDF Table S1

 

Krug, P.J., Asif*, J., Baeza*, I., Morley, M., Blom, W., and T. Gosliner. 2012. Molecular identification of two species of the carnivorous sea slug Philine, invaders of the U.S. west coast. Biological Invasions, 14: 2447-2459.

(doi: 10.1007/s10530-012-0242-9) PDF  Table S1

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Asif*, J.H. and P.J. Krug. 2012. Lineage distribution and barriers to gene flow among populations of a globally invasive marine mollusc. Biological Invasions, 14: 1431-1444. (doi: 10.1007/s10530-011-0169-6) PDF supp data

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Krug, P.J., Händeler, K., and J.E. Vendetti. 2011. Genes, morphology, development and photosynthetic ability support the resurrection of Elysia cornigera (Heterobranchia: Plakobranchoidea) as distinct from the solar-powered sea slug E. timida. Invertebrate Systematics, 25: 477–489. (doi: 10.1071/IS11026) PDF  Table S1

 

Krug, P.J. 2011. Patterns of speciation in marine gastropods: A review of the phylogenetic evidence for localized radiations in the sea. American Malacological Bulletin, 29: 169-186. (doi: 10.4003/006.029.0210) PDF

 

Händeler, K., Grzymbowski, Y.P., Krug, P.J. and H. Wägele. 2009. Functional chloroplasts in metazoan cells –

a unique evolutionary strategy in animal life. Frontiers in Zoology, 6: 28. (doi:10.1186/1742-9994-6-28) PDF

 

Allen*, R.M., Krug, P.J., and D.J. Marshall. 2009. Larval size in Elysia stylifera is determined by extra-embryonic provisioning but not egg size. Marine Ecology Progress Series, 389: 127-137. PDF

 

Krug, P.J. 2009. Not my “type”: Bet-hedging and dispersal dimorphisms in opisthobranch life histories. Biological Bulletin, 216: 355-372. PDF

 

Smolensky*, N., Romero*, M., and P.J. Krug. 2009. Evidence for costs of mating and self-fertilization in a simultaneous hermaphrodite with hypodermic insemination, the opisthobranch Alderia willowi. Biological Bulletin, 216: 188-199. PDF

 

Krug, P.J., Riffell, J., and R.K. Zimmer. 2009. Endogenous signaling pathways and chemical communication between sperm and egg. Journal of Experimental Biology, 212: 1092-1100. PDF

 

Krug, P.J., Morley, M., Asif*, J., Hellyar, L. and W. Blom. 2008. Molecular confirmation of species status for the rare cephalaspidean Melanochlamys lorrainae (Rudman, 1968), and comparison with its sister species M. cylindrica Cheeseman, 1881. Journal of Molluscan Studies, 74: 267-276. PDF

 

Krug, P.J. 2007. Poecilogony and larval ecology in the gastropod genus Alderia. American Malacological Bulletin, 23: 99-111. PDF

 

Krug, P.J., Ellingson*, R., Burton, R., and A. Valdés. 2007. A new poecilogonous species of sea slug (Opisthobranchia: Sacoglossa) from California: Comparison with the planktotrophic congener Alderia modesta (Lovén, 1844). Journal of Molluscan Studies, 73: 29-38. PDF

 

Ellingson*, R.A. and P.J. Krug. 2006. Evolution of poecilogony from planktotrophy: Cryptic speciation, phylogeography and larval development in the gastropod genus Alderia.  Evolution 60: 2293-2310. PDF

 

Zimmer, R.K., Schar, D., Ferrer, R., Krug, P.J., Katz, L., and W. Michel. 2006. The scent of danger: Tetrodotoxin (TTX) as an olfactory cue of predation risk. Ecological Monographs 76: 585-600. PDF

 

Botello*, G. and P.J. Krug. 2006. Desperate larvae revisited: Age, energy and experience affect sensitivity to settlement cues in larvae of the gastropod Alderia sp. Marine Ecology Progress Series 312: 149-159. PDF

 

Krug, P.J. 2006. Defense of benthic invertebrates against surface colonization by larvae: A chemical arms race. Pp. 1-53 in: Clare A. and Fusetani N. (eds) Marine Molecular Biotechnology, vol 2. Springer, Berlin. PDF

 

Krug, P.J. and R.K. Zimmer. 2004. Developmental dimorphism: Consequences for larval behavior and dispersal potential in a marine gastropod.  Biological Bulletin 207: 233-246. PDF

 

Riffell, J., Krug, P.J., and R.K. Zimmer. 2004. The ecological and evolutionary consequences of sperm chemoattraction.  Proceedings of the National Academy of Sciences USA 101: 4501-4506. PDF

 

Riffell, J., Krug, P.J., and R.K. Zimmer. 2002. Fertilization in the sea: The chemical identity of an abalone sperm attractant. Journal of Experimental Biology 205: 1439-1450. PDF [Cover article]

 

Krug, P.J.  2001.  Bet-hedging dispersal strategy of a specialist marine herbivore: A settlement dimorphism among sibling larvae of Alderia modesta.  Marine Ecology Progress Series 213: 177-192. PDF

 

Krug, P.J. and R.K. Zimmer. 2000. Developmental dimorphism and expression of chemosensory-mediated behavior: Habitat selection by a specialist marine herbivore. Journal of Experimental Biology 203: 1741-1754. PDF

 

Krug, P.J. and R.K. Zimmer. 2000. Larval settlement: chemical markers for tracing production, transport, and distribution of a waterborne cue. Marine Ecology Progress Series 207: 283-296. PDF

 

Krug, P.J., and A.E. Manzi,  1999.  Waterborne and surface-associated carbohydrates as settlement cues for larvae of the specialist marine herbivore Alderia modesta.  Biological Bulletin 197: 94-103. PDF

 

Krug, P.J., 1998.  Poecilogony in an estuarine opisthobranch: Planktotrophy, lecithotrophy, and mixed clutches in a population of the ascoglossan Alderia modesta.  Marine Biology 132: 483-494. PDF

 

Graziani, E., Andersen, R., Krug, P.J., and D.J. Faulkner. 1996. Stable isotope incorporation evidence for the de novo biosynthesis of terpenoic acid glycerides by dorid nudibranchs. Tetrahedron 52: 6869-6878. PDF

 

Krug, P.J., Boyd, K.G., and D.J. Faulkner. 1995. Isolation and synthesis of Tanyolides A and B, metabolites of the nudibranch Sclerodoris tanya. Tetrahedron 51: 11063-11074. PDF

 

Krug, P.J., Gileski, A.Z., Code, R., Torjussen, A., and M.B. Schmid. 1994. Endpoint bias in large Tn-10 catalyzed inversions in Salmonella typhimurium. Genetics 136: 747-756. PDF

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