Ryan Hechinger

Title(s)Professor, Scripps Institution of Oceanography Department
SchoolVc-marine Sciences
Address9500 Gilman Drive #
La Jolla CA 92093
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    Evaluating the possible transmission in California of food-borne zoonotic trematode parasites carried by the introduced snail Melanoides tuberculata
    NIH R03AI156569Dec 1, 2020 - Nov 30, 2022
    Role: Principal Investigator

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    1. Social evolution: Diverse divisions of labor in trematode parasites. Curr Biol. 2023 12 04; 33(23):R1238-R1240. Hechinger RF, Metz DCG. PMID: 38052175.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    2. More on formally naming trematode parthenitae and cercariae. Trends Parasitol. 2023 Nov; 39(11):891-892. Hechinger RF. PMID: 37658005.
      View in: PubMed   Mentions:    Fields:    
    3. EXPERIMENTAL INFECTIONS WITH EUHAPLORCHIS CALIFORNIENSIS AND A SMALL CYATHOCOTYLID INCREASE CONSPICUOUS BEHAVIORS IN CALIFORNIA KILLIFISH (FUNDULUS PARVIPINNIS). J Parasitol. 2023 07 01; 109(4):362-376. Weinersmith KL, Nadler LE, Bengston E, Turner AV, Birda A, Cobian K, Dusto JA, Helland-Riise SH, Terhall JM, Øverli Ø, Hechinger RF. PMID: 37527277; PMCID: PMC10658870.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    4. Let's restart formally naming 'larval' trematodes. Trends Parasitol. 2023 08; 39(8):638-649. Hechinger RF. PMID: 37385923.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    5. Potential for Emergence of Foodborne Trematodiases Transmitted by an Introduced Snail (Melanoides tuberculata) in California and Elsewhere in the United States. J Infect Dis. 2023 01 11; 227(2):183-192. Metz DCG, Turner AV, Nelson AP, Hechinger RF. PMID: 36214840; PMCID: PMC10202430.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansAnimals
    6. Lynnia grapsolytica n. gen, n. sp. (Ciliophora: Apostomatida: Colliniidae), a Deadly Blood Parasite of Crabs with a Novel Pseudocytopharynx. J Eukaryot Microbiol. 2021 05; 68(3):e12847. Metz DCG, Hechinger RF. PMID: 33650262.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    7. Broadening the ecology of fear: non-lethal effects arise from diverse responses to predation and parasitism. Proc Biol Sci. 2021 02 24; 288(1945):20202966. Daversa DR, Hechinger RF, Madin E, Fenton A, Dell AI, Ritchie EG, Rohr J, Rudolf VHW, Lafferty KD. PMID: 33622122; PMCID: PMC7935051.
      View in: PubMed   Mentions: 13     Fields:    Translation:HumansAnimals
    8. Brain-encysting trematodes (Euhaplorchis californiensis) decrease raphe serotonergic activity in California killifish (Fundulus parvipinnis). Biol Open. 2020 07 08; 9(7). Helland-Riise SH, Vindas MA, Johansen IB, Nadler LE, Weinersmith KL, Hechinger RF, Øverli Ø. PMID: 32439741; PMCID: PMC7358127.
      View in: PubMed   Mentions: 2     Fields:    Translation:AnimalsCells
    9. Social trematode parasites increase standing army size in areas of greater invasion threat. Biol Lett. 2020 02; 16(2):20190765. Resetarits EJ, Torchin ME, Hechinger RF. PMID: 32097594; PMCID: PMC7058954.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    10. Regional Distribution of a Brain-Encysting Parasite Provides Insight on Parasite-Induced Host Behavioral Manipulation. J Parasitol. 2020 02; 106(1):188-197. Helland-Riise SH, Nadler LE, Vindas MA, Bengston E, Turner AV, Johansen IB, Weinersmith KL, Hechinger RF, Øverli Ø. PMID: 32097105.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    11. Metabolic theory of ecology successfully predicts distinct scaling of ectoparasite load on hosts. Proc Biol Sci. 2019 12 18; 286(1917):20191777. Hechinger RF, Sheehan KL, Turner AV. PMID: 31847763; PMCID: PMC6939921.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    12. Guide to the trematodes (Platyhelminthes) that infect the California horn snail (Cerithideopsis californica: Potamididae: Gastropoda) as first intermediate host. Zootaxa. 2019 Dec 17; 4711(3):zootaxa.4711.3.3. Hechinger RF. PMID: 32230486.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    13. Hermaphrodites and parasitism: size-specific female reproduction drives infection by an ephemeral parasitic castrator. Sci Rep. 2019 12 13; 9(1):19121. Fong CR, Kuris AM, Hechinger RF. PMID: 31836736; PMCID: PMC6911060.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    14. Parasitic nematodes of marine fishes from Palmyra Atoll, East Indo-Pacific, including a new species of Spinitectus (Nematoda, Cystidicolidae). Zookeys. 2019; 892:1-26. González-Solís D, Soler-Jiménez LC, Aguirre-Macedo ML, McLaughlin JP, Shaw JC, James AK, Hechinger RF, Kuris AM, Lafferty KD, Vidal-Martínez VM. PMID: 31824201; PMCID: PMC6892965.
      View in: PubMed   Mentions: 6  
    15. Parasitic copepods (Crustacea, Hexanauplia) on fishes from the lagoon flats of Palmyra Atoll, Central Pacific. Zookeys. 2019; 833:85-106. Soler-Jiménez LC, Morales-Serna FN, Aguirre-Macedo ML, McLaughlin JP, Jaramillo AG, Shaw JC, James AK, Hechinger RF, Kuris AM, Lafferty KD, Vidal-Martínez VM. PMID: 31048953; PMCID: PMC6477860.
      View in: PubMed   Mentions: 5  
    16. Parasite and host biomass and reproductive output in barnacle populations in the rocky intertidal zone. Parasitology. 2019 03; 146(3):407-412. Fong CR, Kuris AM, Hechinger RF. PMID: 30301482.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    17. Sea-level rise, habitat loss, and potential extirpation of a salt marsh specialist bird in urbanized landscapes. Ecol Evol. 2018 Aug; 8(16):8115-8125. Rosencranz JA, Thorne KM, Buffington KJ, Takekawa JY, Hechinger RF, Stewart TE, Ambrose RF, MacDonald GM, Holmgren MA, Crooks JA, Patton RT, Lafferty KD. PMID: 30250688; PMCID: PMC6144993.
      View in: PubMed   Mentions: 2  
    18. Euhaplorchis californiensis Cercariae Exhibit Positive Phototaxis and Negative Geotaxis. J Parasitol. 2018 06; 104(3):329-333. Weinersmith KL, Brown CE, Clingen KB, Jacobsen MC, Topper LB, Hechinger RF. PMID: 29381420.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    19. Monogenea of fishes from the lagoon flats of Palmyra Atoll in the Central Pacific. Zookeys. 2017; (713):1-23. Vidal-Martínez VM, Soler-Jiménez LC, Aguirre-Macedo ML, Mclaughlin J, Jaramillo AG, Shaw JC, James A, Hechinger RF, Kuris AM, Lafferty KD. PMID: 29134039; PMCID: PMC5674209.
      View in: PubMed   Mentions: 4  
    20. Host density increases parasite recruitment but decreases host risk in a snail-trematode system. Ecology. 2017 Aug; 98(8):2029-2038. Buck JC, Hechinger RF, Wood AC, Stewart TE, Kuris AM, Lafferty KD. PMID: 28518406.
      View in: PubMed   Mentions: 8     Fields:    Translation:Animals
    21. No One Saw This Coming: Endoparasitic Mites Behind the Eyes of a Double-Crested Cormorant. J Parasitol. 2017 06; 103(3):295-297. Sheehan KL, Spicer GS, OConnor BM, Hechinger RF. PMID: 28165862.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    22. Sea-level driven glacial-age refugia and post-glacial mixing on subtropical coasts, a palaeohabitat and genetic study. Proc Biol Sci. 2016 Nov 30; 283(1843). Dolby GA, Hechinger R, Ellingson RA, Findley LT, Lorda J, Jacobs DK. PMID: 27903870; PMCID: PMC5136581.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    23. Trematodes with a reproductive division of labour: heterophyids also have a soldier caste and early infections reveal how colonies become structured. Int J Parasitol. 2017 01; 47(1):41-50. Garcia-Vedrenne AE, Quintana AC, DeRogatis AM, Dover CM, Lopez M, Kuris AM, Hechinger RF. PMID: 27914977.
      View in: PubMed   Mentions: 6     Fields:    Translation:Animals
    24. The role of competition - colonization tradeoffs and spatial heterogeneity in promoting trematode coexistence. Ecology. 2016 Jun; 97(6):1484-1496. Mordecai EA, Jaramillo AG, Ashford JE, Hechinger RF, Lafferty KD. PMID: 27859218.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    25. The role of competition--colonization tradeoffs and spatial heterogeneity in promoting trematode coexistence. Ecology. 2016 Jun; 97(6):1484-96. Mordecai EA, Jaramillo AG, Ashford JE, Hechinger RF, Lafferty KD. PMID: 27459779.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    26. Social Organization in Parasitic Flatworms--Four Additional Echinostomoid Trematodes Have a Soldier Caste and One Does Not. J Parasitol. 2016 Feb; 102(1):11-20. Garcia-Vedrenne AE, Quintana AC, DeRogatis AM, Martyn K, Kuris AM, Hechinger RF. PMID: 26560890.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    27. Parasite species richness and intensity of interspecific interactions increase with latitude in two wide-ranging hosts. Ecology. 2015 Nov; 96(11):3033-42. Torchin ME, Miura O, Hechinger RF. PMID: 27070022.
      View in: PubMed   Mentions: 6     Fields:    Translation:Animals
    28. Parasites help find universal ecological rules. Proc Natl Acad Sci U S A. 2015 Feb 10; 112(6):1656-7. Hechinger RF. PMID: 25630508; PMCID: PMC4330728.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    29. A lack of crowding? Body size does not decrease with density for two behavior-manipulating parasites. Integr Comp Biol. 2014 Jul; 54(2):184-92. Weinersmith KL, Warinner CB, Tan V, Harris DJ, Mora AB, Kuris AM, Lafferty KD, Hechinger RF. PMID: 24935987.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    30. Two 'new' renicolid trematodes (Trematoda: Digenea: Renicolidae) from the California horn snail, Cerithidea californica (Haldeman, 1840) (Gastropoda: Potamididae). Zootaxa. 2014 Apr 01; 3784:559-74. Hechinger RF, Miura O. PMID: 24872073.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    31. A metabolic and body-size scaling framework for parasite within-host abundance, biomass, and energy flux. Am Nat. 2013 Aug; 182(2):234-48. Hechinger RF. PMID: 23852357.
      View in: PubMed   Mentions: 19     Fields:    Translation:Animals
    32. Parasites affect food web structure primarily through increased diversity and complexity. PLoS Biol. 2013; 11(6):e1001579. Dunne JA, Lafferty KD, Dobson AP, Hechinger RF, Kuris AM, Martinez ND, McLaughlin JP, Mouritsen KN, Poulin R, Reise K, Stouffer DB, Thieltges DW, Williams RJ, Zander CD. PMID: 23776404; PMCID: PMC3679000.
      View in: PubMed   Mentions: 59     Fields:    Translation:Animals
    33. Maritrema orensense and Maritrema bonaerense (Digenea: Microphallidae): descriptions, life cycles, and comparative morphometric analyses. J Parasitol. 2013 Apr; 99(2):218-28. Alda P, Bonel N, Hechinger RF, Martorelli SR. PMID: 22988841.
      View in: PubMed   Mentions: 1     Fields:    Translation:AnimalsCells
    34. Digenean metacercariae of fishes from the lagoon flats of Palmyra Atoll, Eastern Indo-Pacific. J Helminthol. 2012 Dec; 86(4):493-509. Vidal-Martínez VM, Aguirre-Macedo ML, McLaughlin JP, Hechinger RF, Jaramillo AG, Shaw JC, James AK, Kuris AM, Lafferty KD. PMID: 22217399.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    35. Flying shells: historical dispersal of marine snails across Central America. Proc Biol Sci. 2012 Mar 22; 279(1731):1061-7. Miura O, Torchin ME, Bermingham E, Jacobs DK, Hechinger RF. PMID: 21920976; PMCID: PMC3267146.
      View in: PubMed   Mentions: 10     Fields:    Translation:Animals
    36. A common scaling rule for abundance, energetics, and production of parasitic and free-living species. Science. 2011 Jul 22; 333(6041):445-8. Hechinger RF, Lafferty KD, Dobson AP, Brown JH, Kuris AM. PMID: 21778398; PMCID: PMC3236646.
      View in: PubMed   Mentions: 30     Fields:    Translation:Animals
    37. Social organization in a flatworm: trematode parasites form soldier and reproductive castes. Proc Biol Sci. 2011 Mar 07; 278(1706):656-65. Hechinger RF, Wood AC, Kuris AM. PMID: 20851830; PMCID: PMC3030857.
      View in: PubMed   Mentions: 22     Fields:    Translation:Animals
    38. Ecology of the brain trematode Euhaplorchis californiensis and its host, the California killifish ( Fundulus parvipinnis ). J Parasitol. 2010 Jun; 96(3):482-90. Shaw JC, Hechinger RF, Lafferty KD, Kuris AM. PMID: 20557191.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    39. Mortality affects adaptive allocation to growth and reproduction: field evidence from a guild of body snatchers. BMC Evol Biol. 2010 May 07; 10:136. Hechinger RF. PMID: 20459643; PMCID: PMC2887408.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    40. Diversity increases biomass production for trematode parasites in snails. Proc Biol Sci. 2008 Dec 07; 275(1652):2707-14. Hechinger RF, Lafferty KD, Kuris AM. PMID: 18700204; PMCID: PMC2605822.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    41. Two new species of Camallanus (Nematoda: Camallanidae) from freshwater turtles in Queensland, Australia. J Parasitol. 2008 Dec; 94(6):1364-70. Rigby MC, Sharma RS, Hechinger RF, Platt TR, Weaver JC. PMID: 19127966.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    42. Colloquium paper: homage to Linnaeus: how many parasites? How many hosts? Proc Natl Acad Sci U S A. 2008 Aug 12; 105 Suppl 1:11482-9. Dobson A, Lafferty KD, Kuris AM, Hechinger RF, Jetz W. PMID: 18695218; PMCID: PMC2556407.
      View in: PubMed   Mentions: 164     Fields:    Translation:Animals
    43. Trematodes indicate animal biodiversity in the Chilean intertidal and Lake Tanganyika. J Parasitol. 2008 Aug; 94(4):966-8. Hechinger RF, Lafferty KD, Kuris AM. PMID: 18576749.
      View in: PubMed   Mentions: 8     Fields:    Translation:Animals
    44. Ecosystem energetic implications of parasite and free-living biomass in three estuaries. Nature. 2008 Jul 24; 454(7203):515-8. Kuris AM, Hechinger RF, Shaw JC, Whitney KL, Aguirre-Macedo L, Boch CA, Dobson AP, Dunham EJ, Fredensborg BL, Huspeni TC, Lorda J, Mababa L, Mancini FT, Mora AB, Pickering M, Talhouk NL, Torchin ME, Lafferty KD. PMID: 18650923.
      View in: PubMed   Mentions: 129     Fields:    Translation:Animals
    45. Endangered light-footed clapper rail affects parasite community structure in coastal wetlands. Ecol Appl. 2007 Sep; 17(6):1694-702. Whitney KL, Hechinger RF, Kuris AM, Lafferty KD. PMID: 17913133.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    46. Annotated key to the trematode species infecting Batillaria attramentaria (Prosobranchia: Batillariidae) as first intermediate host. Parasitol Int. 2007 Dec; 56(4):287-96. Hechinger RF. PMID: 17644398.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    47. Introduced cryptic species of parasites exhibit different invasion pathways. Proc Natl Acad Sci U S A. 2006 Dec 26; 103(52):19818-23. Miura O, Torchin ME, Kuris AM, Hechinger RF, Chiba S. PMID: 17179044; PMCID: PMC1750888.
      View in: PubMed   Mentions: 21     Fields:    Translation:Animals
    48. Can parasites be indicators of free-living diversity? Relationships between species richness and the abundance of larval trematodes and of local benthos and fishes. Oecologia. 2007 Feb; 151(1):82-92. Hechinger RF, Lafferty KD, Huspeni TC, Brooks AJ, Kuris AM. PMID: 17024376.
      View in: PubMed   Mentions: 27     Fields:    Translation:Animals
    49. Parasites alter host phenotype and may create a new ecological niche for snail hosts. Proc Biol Sci. 2006 Jun 07; 273(1592):1323-8. Miura O, Kuris AM, Torchin ME, Hechinger RF, Chiba S. PMID: 16777719; PMCID: PMC1560305.
      View in: PubMed   Mentions: 23     Fields:    Translation:Animals
    50. Trematodes associated with mangrove habitat in Puerto Rican salt marshes. J Parasitol. 2005 Jun; 91(3):697-9. Lafferty KD, Hechinger RF, Lorda J, Soler L. PMID: 16108572.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    51. Host diversity begets parasite diversity: bird final hosts and trematodes in snail intermediate hosts. Proc Biol Sci. 2005 May 22; 272(1567):1059-66. Hechinger RF, Lafferty KD. PMID: 16024365; PMCID: PMC1599879.
      View in: PubMed   Mentions: 102     Fields:    Translation:Animals
    52. Molecular-genetic analyses reveal cryptic species of trematodes in the intertidal gastropod, Batillaria cumingi (Crosse). Int J Parasitol. 2005 Jun; 35(7):793-801. Miura O, Kuris AM, Torchin ME, Hechinger RF, Dunham EJ, Chiba S. PMID: 15925598.
      View in: PubMed   Mentions: 50     Fields:    Translation:AnimalsCells
    53. Why should parasite resistance be costly? Trends Parasitol. 2002 Mar; 18(3):116-20. Rigby MC, Hechinger RF, Stevens L. PMID: 11854088.
      View in: PubMed   Mentions: 27     Fields:    Translation:AnimalsPHPublic Health
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