Cells infilled with NA indicate that information is not applicable.

1. metadata.csv

• description: a CSV which contains the metadata collected for each individual crab collected and monitored during the duration of this study
• format: csv
• variables:

  • crab_id: the unique identification tag given to each individual crab and follows the structure below

    1. species (first three letters of species name)
    • options include:
      1. Cancer anthonyi (Metacarcinus anthonyi): ANT
      2. Cancer productus: PRO
      3. Cancer antennarius (Romaleon antennarium): ATS
    1. location (first three letters of collection location)
    • options include:
      1. Gaviota coast: GAV
      2. Unknown: UNK
      3. Alegria Beach: ALE
      4. Sripps: SIO
      5. Hendry’s Beach: HNE
    1. unique number (unique number starting with 001) for individuals that are NOT sexually mature females (i.e. males or immature females), the species name will be given a prefix of M for males and IF for immature females
    • examples:
      1. sexually mature female Metacarcinus anthonyi from the Gaviota Coast: ANT-GAV-001
      2. sexually immature female Cancer productus from Alegria Beach: IFPRO-ALE-001
      3. male Romaleon antennarium from Gaviota Scripps: MATS-SIO-001

  • collection_date: the date that the individual was collected from the baited crab pot and brought into the lab for examination

    • the date is formatted as MM/DD/YYYY

  • species: the species of rock crab

    • options include:
      1. Cancer anthonyi (Metacarcinus anthonyi): cancer_anthonyi
      2. Cancer productus: cancer_productus
      3. Cancer antennarius (Romaleon antennarium): cancer_antennarius

  • carapace_width: the length of the carapce in mm - measured using the standard practices outlined in The Light and Smith Manual by James Carlton

  • abdomen_width: the length of the abdomen in mm

    • measured using the standard practices outlined in The Light and Smith Manual by James Carlton

  • sex: the sex of the individual - options include:

    1. sexually mature female: F
    2. immature female: IF
    3. male: M

  • gravid: the status of sexually mature females, either classified as gravid (yes) or not gravid (no) - options include:

    1. yes: Y
    2. no: N
    3. not applicable (for immature females IF or males M): NA

  • eds: the egg development stage (EDS) of the egg mass for gravid sexually mature females as outlined in the supplemental material (Appendix S1: Table S1) of the associated manuscript

    • this is the EDS of the majority of the brood on the date of collection

  • location: the location of collection - options include:

    1. Gaviota coast: gaviota
    2. Unknown: unknown
    3. Alegria Beach: alegria
    4. Scripps: scripps
    5. Hendry’s Beach: hendrys

  • notes: these are notes about the general appearance and the prevalence of nicothoids upon initial examination

  • nico_date: the date that nicothoids were first identified infesting the individual - the date is formatted as MM/DD/YYYY

  • first_location: the first location that nicothoids were found infested the individual - options include:

    1. egg mass of gravid sexually mature females: eggs
    2. gill chamber: gills
    3. not applicable (nicothoids were not found): NA

  • dissected: was the individual dissected, yes or no - options include:

    1. yes
    2. no

  • nico_location: the locations which nicothoids were found infesting the individual - options include:

    1. ONLY the egg mass of gravid sexually mature females: egg_mass
    2. ONLY the gill chamber: gills
    3. BOTH the egg mass of gravid sexually mature females and the gill chamber: both
    4. nicothoids were not found infesting the individual: neither
    5. not applicable (died before examination or insufficient search effort): NA

  • ever_gravid: was the sexually mature female ever gravid during the duration of the observation, yes or no - options include:

    1. yes: Y
    2. no: N
    3. not applicable (for immature females IF or males M): NA

  • final_notes: these are final notes recoreded about the individual during the duration of the observation including if the individual died before examination, if the individual molted, or other notable features

  • analysis_status: whether or not the individual should be included in the analysis - options include:

    1. exclude from analysis (see final notes for justification): exclude
    2. include in analysis (blank):

2. dissection_data.csv

• description: a CSV which contains the dissection data collected for each individual dissection performed during the duration of this study
• format: csv
• variables:

  • dissection_id: the unique identificaiton tag given to each dissection and follows the structure below

    1. Dissection
    2. unique number (unique number starting with 001)
    • example: the first dissection: Dissection-001

  • crab_id: the unique identifcation tag given to each indvidual crab and follows the structure below

    1. species (first three letters of species name)
    • options include:
      1. Cancer anthonyi (Metacarcinus anthonyi): ANT
      2. Cancer productus: PRO
      3. Cancer antennarius (Romaleon antennarium): ATS
    1. location (first three letters of collection location)
    • options include:
      1. Gaviota coast: GAV
      2. Unknown: UNK
      3. Alegria Beach: ALE
      4. Sripps: SIO
      5. Hendry’s Beach: HNE
    1. unique number (unique number starting with 001) for individuals that are NOT sexually mature females (i.e. males or immature females), the species name will be given a prefix of M for males and IF for immature females
    • examples:
      1. sexually mature female Metacarcinus anthonyi from the Gaviota Coast: ANT-GAV-001
      2. sexually immature female Cancer productus from Alegria Beach: IFPRO-ALE-001
      3. male Romaleon antennarium from Gaviota Scripps: MATS-SIO-001”

  • sex: the sex of the individual

    • options include:
      1. sexually mature female: F
      2. immature female: IF
      3. male: M

  • species: the species of rock crab

    • options include:
      1. Cancer anthonyi (Metacarcinus anthonyi): cancer_anthonyi
      2. Cancer productus: cancer_productus
      3. Cancer antennarius (Romaleon antennarium): cancer_antennarius

  • date: the date of the dissection

    • the date is formatted as MM/DD/YYYY

  • nico_count: the total count of larval nicothoids (the only life stage present in the gill chamber) found across the one gill removed and examined from the host

  • number_lamellae: the total count of lamallae found across the one gill removed and examined from the host

  • notes: these are general notes about the dissection and any significant findings

  • analysis_status: whether or not the individual should be included in the analysis - options include:

    1. exclude from analysis (see final notes for justification): exclude
    2. include in analysis (blank):

3. egg_mass_data.csv

• description: a CSV which contains the egg mass examination data collected for each crab monitored during the duration of this study
• format: csv
• variables:

  • trial_id: the unique identification tag given to each egg mass examination - egg mass examinations occurred during two investigations studying autoinfection and egg mass moratlity; therefore the naming follows the structure below

    1. investigation name
    • options include:
      1. Autoinfection
      2. Mortality
    1. unique number (unique number starting with 001 for each investigation)
    • examples:
      1. first autoinfection investigation: Autoinfection-001
      2. first egg mass mortality investigation: Mortality-001

  • crab_id: the unique identifcation tag given to each indvidual crab and follows the structure below

    1. species (first three letters of species name)
    • options include:
      1. Cancer anthonyi (Metacarcinus anthonyi): ANT
      2. Cancer productus: PRO
      3. Cancer antennarius (Romaleon antennarium): ATS
    1. location (first three letters of collection location)
    • options include:
      1. Gaviota coast: GAV
      2. Unknown: UNK
      3. Alegria Beach: ALE
      4. Sripps: SIO
      5. Hendry’s Beach: HNE
    1. unique number (unique number starting with 001) for individuals that are NOT sexually mature females (i.e. males or immature females), the species name will be given a prefix of M for males and IF for immature females
    • examples:
      1. sexually mature female Metacarcinus anthonyi from the Gaviota Coast: ANT-GAV-001
      2. sexually immature female Cancer productus from Alegria Beach: IFPRO-ALE-001
      3. male Romaleon antennarium from Gaviota Scripps: MATS-SIO-001”

  • date: the date of the examination

    • the date is formatted as MM/DD/YYYY

  • eds: the egg development stage (EDS) of the egg mass for gravid sexually mature females as outlined in the supplemental material (Appendix S1: Table S1) of the associated manuscript

    • this is the EDS of the majority of the brood on the date of examination

  • day: the day in the developmental period of the host egg mass that corresponds to the date of the examination

    • this is extrapolated based on known developmental periods for each species and the timeline of examinations and corresponding egg development stages (eds) records

  • pleopod_number: the numerical location of the pleopod from which the sample that was examined was removed prior to investigation

    • the pleopods are numbered 1- 8 starting with the left posterior pleopod from the ventral view as number 1 and moving in a counterclockwise fashion increasing through the final pleopod, number 8

  • crab_eggs: the total number of crab eggs counted in the smaple during the examination

  • adult_nicos: the total number of adult nicothoid copepods counted in the sample during the examination

  • larval_nicos: the total number of larval nicothoid copepods counted in the sample during the examination

  • nico_eggs: the total number of nicothoid copepod eggs counted in the sample during the examination

  • nemerteans: the total number of nemertean worms counted in the sample during the examination

4. locations.csv

• description: a CSV which contains the egg mass examination data collected for each crab monitored during the duration of this study
• format: csv
• variables:
  • family: the family of the copepod egg predator, nicothoidae
  • genus: the genus of the copepod egg predator, choniosphaera
  • species: the species of the copepod egg predator
    • options include:
      1. Ch. cancrorum
      2. Ch. maenadis
      3. Ch. indica
      4. Ch. sp.
  • host_species: the Latin name of the host species which was infested by the egg predator copepod
  • region: the country where the species of copepod egg predator was found
  • subregion: the subregion of the country where the species of copepod egg predator was found
  • location: the most precise location, a body of water, where the species of copepod egg predator was found
  • longitude: the longitude for the most precise location for the copepod egg predator
  • latitude: the latitude for the most precise location for the copepod egg predator
  • year: the year of the discovery of this copepod egg predator on this particular host species
  • author: the author of the corresponding paper
  • host_group: the group of the host species, brachyura
  • host_order: the order of the host species, decapoda
  • paper: the paper corresponding to the first recording of this particular copepod egg predator on the various host species
  • notes: these are notes about the status of the species within the genus