DOI: 10.6078/d1cb04
title: Chemical data of Hawaiian Tetragnatha spiders

description: Studies of adaptive radiations have played a central role in our
 understanding of reproductive isolation. Yet the focus has been on
 human-biased visual and auditory signals, leaving gaps in our knowledge of
 other modalities. To date, studies on chemical signals in adaptive
 radiations have focused on systems with multimodal signaling, making it
 difficult to isolate the role chemicals play in reproductive isolation. In
 this study we examine the use of chemical signals in the species
 recognition and adaptive radiation of Hawaiian Tetragnatha spiders by
 focusing on entire communities of co-occurring species, and conducting
 behavioral assays in conjunction with chemical analysis of their silks
 using gas chromatography-mass spectrometry. Male spiders significantly
 preferred the silk extracts of conspecific mates over those of sympatric
 heterospecifics. The compounds found in the silk extracts, long chain
 alkyl methyl ethers, were remarkably species-specific in the combination
 and quantity. The differences in the profile were greatest between
 co-occurring species and between closely related sibling species. Lastly,
 there were significant differences in the chemical profile between two
 populations of a particular species. These findings provide key insights
 into the role chemical signals play in the attainment and maintenance of
 reproductive barriers between closely related co-occurring species.
description: # GENERAL INFORMATION 1\. Title of Dataset: Chemical Data of Hawaiian
 Tetragnatha Spiders 2\. Author Information: A. Principal Investigator
 Contact Information Name: Seira Ashley Adams Institution: University of
 California, Berkeley Address: 130 Mulford Hall, #3114, University of
 California-Berkeley, Berkeley CA 94720 Email:
 B. Associate or Co-investigator Contact
 Information Name: Rosemary Gillespie Institution: University of
 California, Berkeley Address: 130 Mulford Hall, #3114, University of
 California-Berkeley, Berkeley CA 94720 Email:
 3\. Date of data collection: 2016 - 2020
 4\. Geographic location of data collection: \- Waikamoi Preserve, Maui,
 Hawaii \- Haleakala Crater, Maui, Hawaii \- Angelo Coast Range Reserve,
 California \- Bodega Marine Reserve, California 5\. Information about
 funding sources that supported the collection of the data: National
 Science Foundation Graduate Research Fellowships Program (Grant #
 DGE 1106400) # SHARING/ACCESS INFORMATION 1\. Licenses/restrictions placed
 on the data: Please cite paper published from this dataset when available
 (publication in review) 2\. Links to publications that cite or use the
 data: (publication in review) 3\. Recommended citation for this dataset:
 (publication in review) # DATA & FILE OVERVIEW 1\. File List: * Methyl
 Ether Matrix = Abundance data of the methyl ether compounds found in each
 specimen * Metadata = Additional information of each specimen * S6 =
 Derivatization information of the most common methyl ethers * S17 = 3-D
 traitgram * 3d_traitgram_cleaned = Code to generate 3-D traitgram *
 Chemical_Analysis_cleaned = Code used for chemical analysis *
 group_analysis = Code used for group analysis * priority_order = Code used
 to generate priority order # METHODOLOGICAL INFORMATION 1\. Description of
 methods used for collection/generation of data: (Publication in review)