Description
Project goal: While market squid play an important role in the California current ecosystem and the economy of the state of California, little is known about the population dynamics of the species. This project aims to collect information on when and where market squid egg capsules are present in the waters off the coast of southern California. The data will provide information on the spatial and temporal distr About this project: What do we need to know? Where are market squid egg capsules present? substrate type, depth, water temperature, location description When were egg capsules sighted? How many egg capsules were present? Do you have a photo of the egg capsules? Any other observations/information about eggs? squid actively laying eggs, color of eggs (translucent or opaque), etc. What are market squid? The market squid, or Doryteuthis opalescens, is a small squid, found in coastal waters from Alaska to Baja California. Market squid adults can reach a length of 11 inches and have a lifespan of 6-9 months. The coloration of the squid varies from translucent white to dark brown as squid can change their color and patterning in response to their environment. They often turn dark red when excited, frightened, or feeding. Adult squid form spawning aggregations in calm waters and the females lay egg capsules after fertilization events. Adult squid often die shortly after spawning. The commercial fisheries in California target these spawning aggregations. Why are market squid important? Market squid are an important resource for the state of California. In terms of tons caught, the market squid fishery is the largest fishery in the state of California. During the 2014-2105 season, fisherman landed over 103,000 metric tons of market squid with a total ex-vessel value of over $72 million (California Department of Fish and Wildlife). Furthermore, market squid have been found in the diets of marine mammals and are believed to play an important role in the transfer of energy from zooplankton to higher trophic levels in the California current system. Although this species is of great importance to the state of California, little is known about the population dynamics of the species. Market squid are believed to experience extreme population declines during El Niño events. However, the cause of these population declines is not understood. While spawning grounds of the species have been identified, information is needed on the spatial and temporal distribution of market squid egg capsules. Without knowledge of the basic ecology of the species, it is difficult to estimate the impact of the fishery on market squid populations and to make informed management decisions. Identifying market squid egg capsules: Females encapsulate hundreds of eggs in a capsule that is made up of layers of protein. Egg capsules are around 6 inches long and are normally laid on sandy bottoms at depths of 10-50 m. Females attach the egg capsules to the bottom using a sticky substance that anchors them in place while allowing ocean water to aerate the eggs. The presence of eggs on the bottom can stimulate other females to lay eggs in the same location. This results in eggs being placed in masses or egg beds that can cover acres of the ocean floor. Egg capsules vary in color from white capsules, which are recently laid, to translucent capsules, which are closer to maturation.
Enregistrements de données
Les données de cette ressource occurrence ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 6 enregistrements.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Versions
Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est The Community Environmental Health Laboratory at MDI Biological Laboratory. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : 847cb205-347d-437b-b463-6a3f143a8743. The Community Environmental Health Laboratory at MDI Biological Laboratory publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF-US.
Mots-clé
Occurrence
Contacts
- Créateur ●
- Personne De Contact
- Associate Professor of Environmental Health
- Créateur ●
- Personne De Contact
- Systems Developer
- Créateur ●
- Personne De Contact
- Community Manager
- Fournisseur Des Métadonnées ●
- Créateur ●
- Utilisateur ●
- Personne De Contact
- Community Environmental Health Laboratory Manager
- Personne De Contact
- Community Environmental Health Laboratory
Couverture géographique
California, United States
Enveloppe géographique | Sud Ouest [32,859, -118,409], Nord Est [33,844, -117,259] |
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Couverture taxonomique
Pas de description disponible
Species | Doryteuthis opalescens |
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Couverture temporelle
Date de début / Date de fin | 2016-12-26 / 2018-04-20 |
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Données sur le projet
Anecdata is a free online citizen science platform developed by the Community Lab at the MDI Biological Laboratory in Bar Harbor, Maine. Anecdata is used by hundreds of individuals and organizations to gather and access citizen science observations and provides a platform to easily collect, manage, and share their citizen science data. How Anecdata works: Project managers create projects, creating datasheets that participants fill out to share their observations. Participants join projects and use the Anecdata website or mobile app to share their observations with the project. Project data is now available for anyone to view and download!
Titre | Anecdata.org |
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Identifiant | Anecdata.org |
Les personnes impliquées dans le projet:
- Chercheur Principal
- Conservateur
Méthodes d'échantillonnage
Documenting locations and sightings of Musca domestica
Etendue de l'étude | Documenting locations and sightings of Musca domestica |
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Description des étapes de la méthode:
- Input the location, date and time, species name, and count for Musca domestica.
Métadonnées additionnelles
Identifiants alternatifs | 847cb205-347d-437b-b463-6a3f143a8743 |
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https://doi.org/10.15468/tsq3hy | |
https://bison.usgs.gov/ipt/resource?r=market-squid |