Dataset: Number of eggs spawned
Deployment: White_2012

Describes how many eggs were produced in each trial.

Principal Investigator:

J. Wilson White (University of North Carolina - Wilmington, UNC-Wilmington)

Co-Principal Investigator:

Susanne Brander (University of North Carolina - Wilmington, UNC-Wilmington)

Contact:

J. Wilson White (University of North Carolina - Wilmington, UNC-Wilmington)

BCO-DMO Data Manager:

Hannah Ake (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Impacts of size-selective mortality on sex-changing fishes (Goby size-selection)

Current State:

Final no updates expected

Version:

Final

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/713309/data

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Description

The number of Menidia beryllina eggs spawned in each trial, organized by replicate tanks.

Methods & Sampling

Dataset acquisition description

Fish survey data were collected by beach seine in the Suisun Bay region of the San Francisco Bay-Delta by Susanne Brander and Bryan Cole. Sampling methodology is fully described in Brander et al. (2013).

Laboratory spawning trials were used to determine the relationship between sex ratio and egg production. Adult inland silversides were placed together in 95 liter circular tanks and allowed to spawn on an artificial spawning substrate (polyester yarn clumps). Substrate was removed daily and inspected for eggs; fertilization was determined by coloration. Full details are provided in White et al. (2017).

Data Processing Description

Dataset Processing Description

Scripts that were used to process these data can be found here: github.com/jwilsonwhite/IPM_statespace. Model code implements an explicit-sex, age-structured model that examines the effects of sex change (due to endocrine disruption) on fish populations. The code also fits a nonlinear mating function to laboratory spawning data, for use in parameterizing the model. All methodological details are provided in White et al. (2017).

BCO-DMO Data Processing Notes:

-dates were reformatted from mm/dd/yy to yyyy/mm/dd

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1435473	NSF Division of Ocean Sciences

Instruments

Purse-seine Fishing Gear

Supplied Name: Beach seine

Supplied Description:

Used to collect samples

Instrument Type

Generic Name: Purse-seine Fishing Gear

Acronym: Purse-seine

Generic Description:

A purse seine is a large wall of netting deployed in a circle around an entire school of fish. The seine has floats along the top line with a lead line of chain along the bottom. Once a school of fish is located, a skiff pulls the seine into the water as the vessel encircles the school with the net. A cable running along the bottom is then pulled in, "pursing" the net closed on the bottom, preventing fish from escaping by swimming downward. The catch is harvested by bringing the net alongside the vessel and brailing the fish aboard.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
date	Date of trial; YYYY/MM/DD	unitless	date
trial	Trial number	unitless	no_bcodmo_term
tank	Aquarium tank for this fish	unitless	tank
fert	Number of fertilized eggs collected	count	count
unfert	Number of unfertilized eggs collected	count	count
day	Day of trial; 1 or 2	unitless	day

Database

Contribute Data

Dataset: Number of eggs spawned
Deployment: White_2012

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Number of eggs spawnedDeployment: White_2012

Dataset acquisition description

Dataset Processing Description

Dataset: Number of eggs spawned
Deployment: White_2012