干旱区生态环境知识资源中心(Arid): A test of adaptive divergence in a newly discovered host association of the soapberry bug Jadera haematoloma on Mexican buckeye, Ungnadia speciosa

Arid

DOI	10.1111/eea.13118
	A test of adaptive divergence in a newly discovered host association of the soapberry bug Jadera haematoloma on Mexican buckeye, Ungnadia speciosa
	Comerford, Mattheau S.; Carroll, Scott P.; Egan, Scott P.
通讯作者	Comerford, MS (corresponding author), Rice Univ, Dept BioSci, Anderson Biol Labs, 6100 Main St, Houston, TX 77005 USA.
来源期刊	ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
ISSN	0013-8703
EISSN	1570-7458
出版年	2022
卷号	170 期号:1 页码:64-78
英文摘要	Host races represent an important step in the speciation process of phytophagous insects as they reflect the maintenance of genetically divergent host-associated populations in the face of appreciable gene flow. The red-shouldered soapberry bug, Jadera haematoloma (Herrich-Schaffer) (Hemiptera: Rhopalidae), is an oligophagous seed predator with a history of host race evolution on plant associations in the (soapberry) family Sapindaceae. Soapberry bugs are a model group for understanding rapid ecological adaptation to their hosts, and hence good candidates for investigating evolutionary divergence in host associations over short timescales. Here, we describe the recent discovery of Mexican buckeye, Ungnadia speciosa Endl., as a host of J. haematoloma in a region of the Chihuahuan desert including west Texas and southeastern New Mexico, USA. This host differs from J. haematoloma's previously recorded hosts in the Sapindaceae in seed chemistry, ecology, and phylogeny. The tendency toward rapid, host-associated adaptations by populations of J. haematoloma and the unique biology of the newly discovered Ungnadia host create the opportunity for potential host race formation, as it overlaps geographically with two previously recorded host plants in this region - the native western soapberry tree, Sapindus saponaria var. drummondii (Hook & Arn.), and the non-native goldenrain tree, Koelreuteria paniculata Laxm. We explore the possibility of host race formation on Ungnadia-associated insects by testing for host-associated differentiation in morphology and feeding behaviors. We find evidence of differentiation in the length of the mouth parts, which is an ecologically relevant feeding trait between host plant species with larger or smaller seed capsules. This divergence is maintained in the face of potential gene flow by reproductive isolation in the form of habitat isolation, which we detect in host preference trials. Together, our results demonstrate that soapberry bugs associated with this newly discovered host exhibit morphological and behavioral traits consistent with host race formation, but additional work is required to confirm its state along the speciation continuum.
英文关键词	host race adaptation speciation sympatry phenotypic differentiation habitat preference Hemiptera Rhopalidae Sapindaceae host-associated divergence Jadera haematoloma Ungnadia speciosa
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000719904600001
WOS关键词	REPRODUCTIVE ISOLATION ; NATURAL-SELECTION ; GENETIC DIFFERENTIATION ; NORTHEASTERN MEXICO ; PLANT ADAPTATION ; SYMPATRIC RACES ; SPECIATION ; HEMIPTERA ; SAPINDACEAE ; CYANOLIPIDS
WOS类目	Entomology
WOS研究方向	Entomology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374368
作者单位	[Comerford, Mattheau S.; Egan, Scott P.] Rice Univ, Dept BioSci, Houston, TX 77005 USA; [Carroll, Scott P.] Inst Contemporary Evolut, Davis, CA 95616 USA; [Carroll, Scott P.] Univ Calif Davis, Dept Entomol & Nematol, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Comerford, Mattheau S.,Carroll, Scott P.,Egan, Scott P.. A test of adaptive divergence in a newly discovered host association of the soapberry bug Jadera haematoloma on Mexican buckeye, Ungnadia speciosa[J],2022,170(1):64-78.
APA	Comerford, Mattheau S.,Carroll, Scott P.,&Egan, Scott P..(2022).A test of adaptive divergence in a newly discovered host association of the soapberry bug Jadera haematoloma on Mexican buckeye, Ungnadia speciosa.ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA,170(1),64-78.
MLA	Comerford, Mattheau S.,et al."A test of adaptive divergence in a newly discovered host association of the soapberry bug Jadera haematoloma on Mexican buckeye, Ungnadia speciosa".ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA 170.1(2022):64-78.