Molecular biogeography and host relations of a parasitoid fly

David A. Gray, Henry D. Kunerth, Marlene Zuk, William H. Cade, Susan L. Balenger

Research output: Contribution to journalArticle

Abstract

Successful geographic range expansion by parasites and parasitoids may also require host range expansion. Thus, the evolutionary advantages of host specialization may trade off against the ability to exploit new host species encountered in new geographic regions. Here, we use molecular techniques and confirmed host records to examine biogeography, population divergence, and host flexibility of the parasitoid fly, Ormia ochracea (Bigot). Gravid females of this fly find their cricket hosts acoustically by eavesdropping on male cricket calling songs; these songs vary greatly among the known host species of crickets. Using both nuclear and mitochondrial genetic markers, we (a) describe the geographical distribution and subdivision of genetic variation in O. ochracea from across the continental United States, the Mexican states of Sonora and Oaxaca, and populations introduced to Hawaii; (b) demonstrate that the distribution of genetic variation among fly populations is consistent with a single widespread species with regional host specialization, rather than locally differentiated cryptic species; (c) identify the more-probable source populations for the flies introduced to the Hawaiian islands; (d) examine genetic variation and substructure within Hawaii; (e) show that among-population geographic, genetic, and host song distances are all correlated; and (f) discuss specialization and lability in host-finding behavior in light of the diversity of cricket songs serving as host cues in different geographically separate populations.

Original languageEnglish (US)
Pages (from-to)11476-11493
Number of pages18
JournalEcology and Evolution
Volume9
Issue number19
DOIs
StatePublished - Oct 1 2019

Fingerprint

parasitoid
biogeography
cricket
Gryllidae
song
animal communication
Hawaii
genetic variation
range expansion
Ormia ochracea
host location
host seeking
gravid females
host range
genetic marker
geographical distribution
trade-off
parasitoids
parasite
divergence

Keywords

  • Gryllus
  • Ormia
  • Teleogryllus
  • host specialization
  • parasitoid
  • range expansion
  • song distance matrix

PubMed: MeSH publication types

  • Journal Article

Cite this

Gray, D. A., Kunerth, H. D., Zuk, M., Cade, W. H., & Balenger, S. L. (2019). Molecular biogeography and host relations of a parasitoid fly. Ecology and Evolution, 9(19), 11476-11493. https://doi.org/10.1002/ece3.5649

Molecular biogeography and host relations of a parasitoid fly. / Gray, David A.; Kunerth, Henry D.; Zuk, Marlene; Cade, William H.; Balenger, Susan L.

In: Ecology and Evolution, Vol. 9, No. 19, 01.10.2019, p. 11476-11493.

Research output: Contribution to journalArticle

Gray, DA, Kunerth, HD, Zuk, M, Cade, WH & Balenger, SL 2019, 'Molecular biogeography and host relations of a parasitoid fly', Ecology and Evolution, vol. 9, no. 19, pp. 11476-11493. https://doi.org/10.1002/ece3.5649
Gray, David A. ; Kunerth, Henry D. ; Zuk, Marlene ; Cade, William H. ; Balenger, Susan L. / Molecular biogeography and host relations of a parasitoid fly. In: Ecology and Evolution. 2019 ; Vol. 9, No. 19. pp. 11476-11493.
@article{74d3b8e7b4784165827bc91985b91f84,
title = "Molecular biogeography and host relations of a parasitoid fly",
abstract = "Successful geographic range expansion by parasites and parasitoids may also require host range expansion. Thus, the evolutionary advantages of host specialization may trade off against the ability to exploit new host species encountered in new geographic regions. Here, we use molecular techniques and confirmed host records to examine biogeography, population divergence, and host flexibility of the parasitoid fly, Ormia ochracea (Bigot). Gravid females of this fly find their cricket hosts acoustically by eavesdropping on male cricket calling songs; these songs vary greatly among the known host species of crickets. Using both nuclear and mitochondrial genetic markers, we (a) describe the geographical distribution and subdivision of genetic variation in O. ochracea from across the continental United States, the Mexican states of Sonora and Oaxaca, and populations introduced to Hawaii; (b) demonstrate that the distribution of genetic variation among fly populations is consistent with a single widespread species with regional host specialization, rather than locally differentiated cryptic species; (c) identify the more-probable source populations for the flies introduced to the Hawaiian islands; (d) examine genetic variation and substructure within Hawaii; (e) show that among-population geographic, genetic, and host song distances are all correlated; and (f) discuss specialization and lability in host-finding behavior in light of the diversity of cricket songs serving as host cues in different geographically separate populations.",
keywords = "Gryllus, Ormia, Teleogryllus, host specialization, parasitoid, range expansion, song distance matrix",
author = "Gray, {David A.} and Kunerth, {Henry D.} and Marlene Zuk and Cade, {William H.} and Balenger, {Susan L.}",
year = "2019",
month = "10",
day = "1",
doi = "10.1002/ece3.5649",
language = "English (US)",
volume = "9",
pages = "11476--11493",
journal = "Ecology and Evolution",
issn = "2045-7758",
publisher = "John Wiley and Sons Ltd",
number = "19",

}

TY - JOUR

T1 - Molecular biogeography and host relations of a parasitoid fly

AU - Gray, David A.

AU - Kunerth, Henry D.

AU - Zuk, Marlene

AU - Cade, William H.

AU - Balenger, Susan L.

PY - 2019/10/1

Y1 - 2019/10/1

N2 - Successful geographic range expansion by parasites and parasitoids may also require host range expansion. Thus, the evolutionary advantages of host specialization may trade off against the ability to exploit new host species encountered in new geographic regions. Here, we use molecular techniques and confirmed host records to examine biogeography, population divergence, and host flexibility of the parasitoid fly, Ormia ochracea (Bigot). Gravid females of this fly find their cricket hosts acoustically by eavesdropping on male cricket calling songs; these songs vary greatly among the known host species of crickets. Using both nuclear and mitochondrial genetic markers, we (a) describe the geographical distribution and subdivision of genetic variation in O. ochracea from across the continental United States, the Mexican states of Sonora and Oaxaca, and populations introduced to Hawaii; (b) demonstrate that the distribution of genetic variation among fly populations is consistent with a single widespread species with regional host specialization, rather than locally differentiated cryptic species; (c) identify the more-probable source populations for the flies introduced to the Hawaiian islands; (d) examine genetic variation and substructure within Hawaii; (e) show that among-population geographic, genetic, and host song distances are all correlated; and (f) discuss specialization and lability in host-finding behavior in light of the diversity of cricket songs serving as host cues in different geographically separate populations.

AB - Successful geographic range expansion by parasites and parasitoids may also require host range expansion. Thus, the evolutionary advantages of host specialization may trade off against the ability to exploit new host species encountered in new geographic regions. Here, we use molecular techniques and confirmed host records to examine biogeography, population divergence, and host flexibility of the parasitoid fly, Ormia ochracea (Bigot). Gravid females of this fly find their cricket hosts acoustically by eavesdropping on male cricket calling songs; these songs vary greatly among the known host species of crickets. Using both nuclear and mitochondrial genetic markers, we (a) describe the geographical distribution and subdivision of genetic variation in O. ochracea from across the continental United States, the Mexican states of Sonora and Oaxaca, and populations introduced to Hawaii; (b) demonstrate that the distribution of genetic variation among fly populations is consistent with a single widespread species with regional host specialization, rather than locally differentiated cryptic species; (c) identify the more-probable source populations for the flies introduced to the Hawaiian islands; (d) examine genetic variation and substructure within Hawaii; (e) show that among-population geographic, genetic, and host song distances are all correlated; and (f) discuss specialization and lability in host-finding behavior in light of the diversity of cricket songs serving as host cues in different geographically separate populations.

KW - Gryllus

KW - Ormia

KW - Teleogryllus

KW - host specialization

KW - parasitoid

KW - range expansion

KW - song distance matrix

UR - http://www.scopus.com/inward/record.url?scp=85073598490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85073598490&partnerID=8YFLogxK

U2 - 10.1002/ece3.5649

DO - 10.1002/ece3.5649

M3 - Article

C2 - 31641487

AN - SCOPUS:85073598490

VL - 9

SP - 11476

EP - 11493

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

IS - 19

ER -