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Title Sum-
Institution Dataset ID
     data   graph     files  public Egg sizes and macromere allocation for diverse annelids and molluscs    ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_683186

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv
attribute NC_GLOBAL acquisition_description String See complete methodolgy in:
Jones, C., et al. 2016.\u00a0Allocation of cytoplasm to macromeres in
embryos of annelids and molluscs is positively correlated with egg size.
Evolution & Development,\u00a018:3, 156\u2013170.

In brief (extracted from above):
Data on 43 specieswere obtained fromthe literature.We searched the online
databases Web of Science, Biological Abstracts, and Zoological Record using
one or more keywords (development, cleavage, macromeres, micromeres, or
blastomeres) and taxonomic names (Spiralia, Gastropoda, Bivalvia, Annelida, or
Polychaeta).\u00a0We used studies that contained at least one clear micrograph
or drawing of an embryo at the eight-cell stage, with boundaries of at least
one micromere and macromere visible.

Embryos of an additional six species were imaged in our laboratory. For three
species of gastropods in the genus Crepidula, we could measure the dimensions
of a specific isolated zygote, allow it to cleave, and then image it at the
eightcell stage to obtain estimates of allocation to macromeres. We did this
for Crepidula fornicata and C. plana (collected June 2014 from Cedar Beach,
Bailey Island, Maine: 43.743730, -69.986991) and C. williamsi (collected
several times in 2013 and 2014 from White Point, Rancho Palos Verde,
California: 33.715604, -118.319490).\u00a0For these species, capsules
deposited in the laboratory were removed from females, and 8\u201310 embryos
from each brood were imaged at the zygote and eight-cell stages. Eight-cell
stages were imaged in animal-pole view using brightfield illumination.

For members of three additional species we could not follow the development of
specific isolated zygotes, but instead imaged different zygotes and eight-cell
embryos from the same or different broods, depending on the species. We
collected aggregations of S. tribranchiata from floating docks at the Alamitos
Bay Marina, Long Beach,California (33.754743,-118.111179) in May 2014. We
broke open tubes until zygotes and eight-cell embryos were found. Ten zygotes
and 10 eight-cell embryos (in animal-pole view) were imaged. Adults of the
opisthobranch gastropod Haminoea vesicula were collected in May 2014 from the
intertidal zone of Alamitos Bay, Long Beach, California (33.747227,
-118.118773). Adults kept in mesh-sided containers in a recirculating seawater
system deposited egg masses on the sides of the containers. We imaged 10
zygotes and 10 eight-cell embryos (in animal-pole view) fromone brood fromeach
of three different parents.Wealso imaged zygotes and eight-cell embryos (in
animal-pole view) of the poecilogonous opisthobranch gastropod Alderia
willowi. Individual adults of this species deposit egg masses containing small
zygotes (approx. 68mm diameter) or egg masses containing large zygotes
(approx. 105mm) (Krug 2007). We collected adults of A. willowi in April and
May 2014 from their host alga, Vaucheria longicaulis, from the intertidal zone
of Golden Shore Marine Biological Reserve, Long Beach, California (33.763624,
-118.202146). Pairs of adults were kept in small dishes in the laboratory
until broods were deposited.We imaged 10 zygotes and 10 eight-cell embryos
from each of three \"small-egg\" broods, and 10 zygotes and 10 eight-cell
embryos from each of three \"large-egg\" broods, each deposited by a different

We estimated the volumes of cytoplasm allocated to micromeres and macromeres
at the eight-cell stage from images of eight-cell embryos.
attribute NC_GLOBAL awards_0_award_nid String 528890
attribute NC_GLOBAL awards_0_award_number String OCE-1060801
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1060801 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Egg sizes and macromere allocation
PI: Bruno Pernet (CSU Long Beach)
Version: 28 February 2017
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2017-02-28T18:14:47Z
attribute NC_GLOBAL date_modified String 2019-08-02T20:10:32Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.683186.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/683186 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 683246
attribute NC_GLOBAL instruments_0_description String Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope".
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB05/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Microscope-Optical
attribute NC_GLOBAL instruments_0_instrument_nid String 708
attribute NC_GLOBAL keywords String alloc, alloc_pcnt, allocation, bco, bco-dmo, biological, chemical, data, dataset, diameter, dmo, egg, egg_diameter, egg_volume, erddap, log, log_egg_diameter, log_egg_volume, logit, logit_allocation, management, nutrition, oceanography, office, pcnt, preliminary, species, taxa, taxon, volume
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/683186/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/683186 (external link)
attribute NC_GLOBAL param_mapping String {'683186': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/683186/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String California State University Long Beach
attribute NC_GLOBAL people_0_affiliation_acronym String CSULB
attribute NC_GLOBAL people_0_person_name String Bruno Pernet
attribute NC_GLOBAL people_0_person_nid String 528893
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Shannon Rauch
attribute NC_GLOBAL people_1_person_nid String 51498
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String Ciliated Larvae Feeding
attribute NC_GLOBAL projects_0_acronym String Ciliated Larvae Feeding
attribute NC_GLOBAL projects_0_description String Description from NSF award abstract:
Many marine invertebrate larvae must feed to fuel development through metamorphosis to the juvenile stage. These feeding larvae capture suspended food particles in diverse ways. Laboratory evidence suggests that different larval feeding mechanisms may affect performance depending on particle types. For example, larvae of echinoderms feed by ciliary reversal, a mechanism that apparently limits clearance rates on small particles (10 um). Because the concentration of suspended food particles can constrain larval growth in natural waters, and because the size distribution of natural particles varies over space and time, maximum clearance rates imposed by a particular feeding mechanism may restrict larval growth rates and development. As a result, the planktonic period of suspension-feeding larvae would be extended and larval mortality (due to predation, or advection from suitable adult habitat) increased, leading to lower recruitment. In this way, performance constraints associated with particular larval feeding mechanisms could strongly affect population dynamics. Such effects are missing from population-dynamic models of benthic invertebrates, largely because they are not well understood. Toward this end, controlled comparisons are needed of the feeding capabilities of ciliated larvae that differ in feeding mechanism.
The present study will examine the feeding capabilities of larvae that gather food using one of three particle capture mechanisms (ciliary reversal, opposed band, or a "mixed" strategy of opposed band feeding and encounter feeding on large particles), and for larvae with distinct body forms (e.g., within opposed band feeding, trochophores vs. veligers). Three main hypotheses will be tested. (1) Larvae that differ in particle capture mechanisms/body form will also differ in either maximum clearance rates, or in the size spectrum of particles cleared at high rates. Laboratory experiments will involve artificial particles, varying only in size. (2) Hypothesized differences in (1) also hold for natural particles. Experiments will test semi-natural prey communities. (3) Larvae with different feeding mechanisms will perform best in specific feeding environments (e.g., those dominated by small particles versus large particles). Larval growth rates will be tested in experimentally manipulated, semi-natural food regimes.
Yielding explicit, planned comparisons of larval performance as a function of feeding mechanism, larval body form, and particle type, this research would improve understanding of the importance of larval feeding mechanism in the population dynamics of marine invertebrates. This study is relevant to many compelling questions in reproductive biology, ecology and evolution, such as: how do seasonal changes in the types of particulate food affect the performance of larvae with particular feeding mechanisms; how might such linkages be related to the evolution of seasonal reproductive patterns in various taxa of marine invertebrates; and how might human-mediated shifts in ocean temperature and chemistry (predicted to alter the size spectrum of potential food particles) affect performance of larvae with particular feeding mechanisms?
attribute NC_GLOBAL projects_0_end_date String 2015-09
attribute NC_GLOBAL projects_0_geolocation String coastal northeastern Pacific (California, Washington)
attribute NC_GLOBAL projects_0_name String Feeding by the ciliated larvae of marine invertebrates: effects of diverse particle capture mechanisms on feeding performance
attribute NC_GLOBAL projects_0_project_nid String 528891
attribute NC_GLOBAL projects_0_project_website String http://www.csulb.edu/colleges/cnsm/depts/biology/invertebrate_reproduction/ (external link)
attribute NC_GLOBAL projects_0_start_date String 2011-10
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Egg sizes and macromere allocation for annelids and molluscs used in a comparative analysis of allocation of cytoplasm to macromeres. Many of these data were obtained from the literature, but some were obtained directly by the authors.
attribute NC_GLOBAL title String Egg sizes and macromere allocation for diverse annelids and molluscs
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable taxon   String  
attribute taxon bcodmo_name String taxon
attribute taxon description String Broader taxonomic group
attribute taxon long_name String Taxon
attribute taxon units String unitless
variable species   String  
attribute species bcodmo_name String species
attribute species description String Species name
attribute species long_name String Species
attribute species units String unitless
variable nutrition   byte  
attribute nutrition _FillValue byte 127
attribute nutrition actual_range byte 0, 1
attribute nutrition bcodmo_name String unknown
attribute nutrition description String Larval nutrition; 0=feeding, 1=nonfeeding
attribute nutrition long_name String Nutrition
attribute nutrition units String unitless
variable taxa   String  
attribute taxa bcodmo_name String unknown
attribute taxa description String ?
attribute taxa long_name String Taxa
attribute taxa units String unitless
variable egg_diameter   float  
attribute egg_diameter _FillValue float NaN
attribute egg_diameter actual_range float 45.4, 1700.0
attribute egg_diameter bcodmo_name String unknown
attribute egg_diameter description String Egg diameter
attribute egg_diameter long_name String Egg Diameter
attribute egg_diameter units String micrometers (um)
variable egg_volume   double  
attribute egg_volume _FillValue double NaN
attribute egg_volume actual_range double 49002.97971, 2.572774333E9
attribute egg_volume bcodmo_name String unknown
attribute egg_volume description String Egg volume
attribute egg_volume long_name String Egg Volume
attribute egg_volume units String cubic micrometer (um3)
variable allocation   float  
attribute allocation _FillValue float NaN
attribute allocation actual_range float 0.4814, 0.9984
attribute allocation bcodmo_name String unknown
attribute allocation description String Macromere allocation: proportion of egg volume found in the four macromeres at 8-cell stage
attribute allocation long_name String Allocation
attribute allocation units String unitless
variable alloc_pcnt   float  
attribute alloc_pcnt _FillValue float NaN
attribute alloc_pcnt actual_range float 48.14, 99.84
attribute alloc_pcnt bcodmo_name String unknown
attribute alloc_pcnt description String Macromere allocation expressed as a percentage
attribute alloc_pcnt long_name String Alloc Pcnt
attribute alloc_pcnt units String unitless
variable log_egg_diameter   float  
attribute log_egg_diameter _FillValue float NaN
attribute log_egg_diameter actual_range float 1.6571, 3.2304
attribute log_egg_diameter bcodmo_name String unknown
attribute log_egg_diameter description String Log of egg diameter
attribute log_egg_diameter long_name String Log Egg Diameter
attribute log_egg_diameter units String micrometers (um)
variable log_egg_volume   float  
attribute log_egg_volume _FillValue float NaN
attribute log_egg_volume actual_range float 4.6902, 9.4104
attribute log_egg_volume bcodmo_name String unknown
attribute log_egg_volume description String Log of egg volume
attribute log_egg_volume long_name String Log Egg Volume
attribute log_egg_volume units String cubic micrometer (um3)
variable logit_allocation   float  
attribute logit_allocation _FillValue float NaN
attribute logit_allocation actual_range float -0.0744, 6.4362
attribute logit_allocation bcodmo_name String unknown
attribute logit_allocation description String Logit of allocation
attribute logit_allocation long_name String Logit Allocation
attribute logit_allocation units String unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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