Riascos, José M; Laudien, Jürgen; Heilmayer, Olaf (2008): Gametogenic cycle of Mesodesma donacium in Hornitos, Chile, 2007 [dataset]. Instituto de Investigaciones Oceanológicas, Universidad de Antofagasta, PANGAEA, https://doi.org/10.1594/PANGAEA.694025
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Related to:
Riascos, José M (2009): Thriving and declining: Population dynamics of the macha (Mesodesma donacium, Bivalvia, Mesodesmatidae) along a latitudinal gradient of the Humboldt Current Upwelling System. PhD Thesis, University of Bremen, Germany, 124, urn:nbn:de:gbv:46-diss000113783
Project(s):
Funding:
Sixth Framework Programme (FP6), grant/award no. 511071: Climate variability and El Niño Southern Oscillation
Coverage:
Latitude: -22.916500 * Longitude: -70.290300
Date/Time Start: 2007-01-15T00:00:00 * Date/Time End: 2007-04-15T00:00:00
Minimum Elevation: 0.0 m * Maximum Elevation: 0.0 m
Event(s):
Hornitos_meso_dona * Latitude: -22.916500 * Longitude: -70.290300 * Date/Time Start: 1970-01-01T00:00:00 * Date/Time End: 2008-12-31T00:00:00 * Elevation: 0.0 m * Location: Hornitos, Chile * Campaign: Historical_Chile * Method/Device: Sampling by hand (HAND)
Comment:
Collected clams were fixed in formalin and processed later in the laboratory using standard methods (Romeis 1989), embedding gonad tissue in paraplast wax after dehydration. Gonad tissue samples were always taken equally distant between the digestive gland and the proximal end of the foot. Two distinct slides (15mm length, 8mm whidth, 5 µm thik) were analyzed and no differences in gonad developement were observed between slides. Tissue slides were stained with hematoxylin-eosin. Gonad stages were classified following Delgado & Defeo (2007) for Donax hanleyanus.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Geocode | |||
| 2 | Gonad stage, preactive | Gon stg preact | # | Tarifeño-Silva, Eduardo | ||
| 3 | Gonad stage, active | Gon stg act | # | Tarifeño-Silva, Eduardo | ||
| 4 | Gonad stage, spawned | Gon stg spawn | # | Tarifeño-Silva, Eduardo | ||
| 5 | Gonad stage, cytholysed | Gon stg cytho | # | Tarifeño-Silva, Eduardo |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
16 data points