Brown, Elizabeth E; Baumann, Hannes; Conover, David O (2014): Temperature and photoperiod effects on sex determination in Leuresthes tenuis (fish) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.835603, Supplement to: Brown, EE et al. (2014): Temperature and photoperiod effects on sex determination in a fish. Journal of Experimental Marine Biology and Ecology, 461, 39-43, https://doi.org/10.1016/j.jembe.2014.07.009
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
In some gonochoristic species, sex is influenced not only by genotype at conception but also by the environment that offspring experience during early ontogeny (termed environmental sex determination or ESD). ESD is thought to be adaptive when seasonal variations in environmental conditions provide a sex-specific fitness advantage. In vertebrates, temperature is the most common determinant of sex, and seasonal variation in temperature serves as a temporal cue of environmental quality such as length of the growing season. Some environments, however, lack strong seasonal temperature fluctuations and other cues, particularly photoperiod, may provide a more reliable indicator of the environment offspring enter. We tested this hypothesis by rearing the offspring of the California grunion (Leuresthes tenuis, Ayres), which experiences low seasonal temperature variation in nature, under common garden conditions at three temperature and two photoperiod treatments. Our experiments revealed that both temperature and photoperiod significantly affected sex ratios in L. tenuis. More females were produced at cooler temperatures and longer day lengths, which is consistent with female biased sex ratios early in the breeding season, and likely adaptive through increased female size and fecundity. To our knowledge, this is the first documented case of photoperiod-dependent sex determination in a gonochoristic vertebrate.
Coverage:
Median Latitude: 32.950000 * Median Longitude: -117.700000 * South-bound Latitude: 31.900000 * West-bound Longitude: -118.800000 * North-bound Latitude: 34.000000 * East-bound Longitude: -116.600000
Date/Time Start: 2010-06-30T00:00:00 * Date/Time End: 2010-06-30T00:00:00
Event(s):
Ensenada-MX * Latitude: 31.900000 * Longitude: -116.600000 * Location: Ensenada, Baja California, Mexico
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Geocode | |||
| 2 | Event label | Event | ||||
| 3 | Latitude of event | Latitude | ||||
| 4 | Longitude of event | Longitude | ||||
| 5 | Temperature, water | Temp | °C | Brown, Elizabeth E | ||
| 6 | Photoperiod, hours of daylight | Photoperiod | h | Brown, Elizabeth E | ||
| 7 | Replicates | Repl | # | Brown, Elizabeth E | Either 1, 2, or 3: Replicates were 20L rearing containers | |
| 8 | Number | No | Brown, Elizabeth E | Running number for individual fish within each replicate container | ||
| 9 | Fish, total length | Fish TL | mm | Brown, Elizabeth E | Caliper | |
| 10 | Sex | Sex | Brown, Elizabeth E | Microscopy | Female or male, determined from microscpic (100x) examination of gonads |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4248 data points
Download Data
View dataset as HTML (shows only first 2000 rows)