Population assessment of the pacific green spiny lobster Panulirus gracilis in Pacific Panama

Hector M. Guzman, Roberto Cipriani, Angel J. Vega, Melina Lopez, James M. Mair

    Research output: Contribution to journalArticle

    Abstract

    Populations of the green spiny lobster Panulirus gracilis (Streets 1871) have sustained increasing harvesting pressure in Pacific Panama for decades, but basic information about their biology and ecology in the region is scarce. This study provides baseline data for the densities and biometrics of P. gracilis in Las Perlas and Coiba Archipelagos. The number of surveyed lobsters in both archipelagos was surprisingly low (85 in Las Perlas and 67 in Coiba), and average densities were dismal (4.1 ± 8.8 ind. ha-1 and 5.3 ± 7.6 ind. ha-1, respectively). Saboga and San Jose Islands had the highest relative densities of P. gracilis in Las Perlas, whereas intermediate relative densities were found only on Coiba Island in the Coiba Archipelago. Lobster density was not associated with either substrate or depth. In Las Perlas, female carapace length (CL) was 40-95 mm and that of males was 25-100 mm; in Coiba, female CL was 45-124 mm and male CL was 45-121 mm. In Las Perlas, the smallest lobster with eggs had a CL = 65 mm and a tail length (TL) = 120 mm, whereas the smallest in Coiba had a CL = 60 mm and a TL = 81-115 mm. We recommend implementing: (1) the minimum capture CL as the average carapace length at which half of the lobster population from Coiba is adult (CL = 84 mm; TL = 112-155 mm); (2) a fishing season no longer than 6 mo; (3) management decisions involving local fishermen and native peoples; (4) marine reserves or no-take areas (NTA); and (5) long-term monitoring plans, as the best current options to insure the survival of P. gracilis in the region.

    Original languageEnglish
    Pages (from-to)907-915
    Number of pages9
    JournalJournal of Shellfish Research
    Volume27
    Issue number4
    DOIs
    Publication statusPublished - Aug 2008

    Fingerprint

    Panulirus
    lobsters
    Panama
    tail
    indigenous peoples
    fishermen
    biometry

    Keywords

    • Coiba
    • Fishery management
    • Green spiny lobster
    • Las perlas
    • Overfishing
    • Panama
    • Panulirus gracilis

    Cite this

    Guzman, Hector M. ; Cipriani, Roberto ; Vega, Angel J. ; Lopez, Melina ; Mair, James M. / Population assessment of the pacific green spiny lobster Panulirus gracilis in Pacific Panama. In: Journal of Shellfish Research. 2008 ; Vol. 27, No. 4. pp. 907-915.
    @article{acdb3c3b37a44cabae9ad1f18a60ef7f,
    title = "Population assessment of the pacific green spiny lobster Panulirus gracilis in Pacific Panama",
    abstract = "Populations of the green spiny lobster Panulirus gracilis (Streets 1871) have sustained increasing harvesting pressure in Pacific Panama for decades, but basic information about their biology and ecology in the region is scarce. This study provides baseline data for the densities and biometrics of P. gracilis in Las Perlas and Coiba Archipelagos. The number of surveyed lobsters in both archipelagos was surprisingly low (85 in Las Perlas and 67 in Coiba), and average densities were dismal (4.1 ± 8.8 ind. ha-1 and 5.3 ± 7.6 ind. ha-1, respectively). Saboga and San Jose Islands had the highest relative densities of P. gracilis in Las Perlas, whereas intermediate relative densities were found only on Coiba Island in the Coiba Archipelago. Lobster density was not associated with either substrate or depth. In Las Perlas, female carapace length (CL) was 40-95 mm and that of males was 25-100 mm; in Coiba, female CL was 45-124 mm and male CL was 45-121 mm. In Las Perlas, the smallest lobster with eggs had a CL = 65 mm and a tail length (TL) = 120 mm, whereas the smallest in Coiba had a CL = 60 mm and a TL = 81-115 mm. We recommend implementing: (1) the minimum capture CL as the average carapace length at which half of the lobster population from Coiba is adult (CL = 84 mm; TL = 112-155 mm); (2) a fishing season no longer than 6 mo; (3) management decisions involving local fishermen and native peoples; (4) marine reserves or no-take areas (NTA); and (5) long-term monitoring plans, as the best current options to insure the survival of P. gracilis in the region.",
    keywords = "Coiba, Fishery management, Green spiny lobster, Las perlas, Overfishing, Panama, Panulirus gracilis",
    author = "Guzman, {Hector M.} and Roberto Cipriani and Vega, {Angel J.} and Melina Lopez and Mair, {James M.}",
    year = "2008",
    month = "8",
    doi = "10.2983/0730-8000(2008)27[907:PAOTPG]2.0.CO;2",
    language = "English",
    volume = "27",
    pages = "907--915",
    journal = "Journal of Shellfish Research",
    issn = "0730-8000",
    publisher = "National Shellfisheries Association",
    number = "4",

    }

    Population assessment of the pacific green spiny lobster Panulirus gracilis in Pacific Panama. / Guzman, Hector M.; Cipriani, Roberto; Vega, Angel J.; Lopez, Melina; Mair, James M.

    In: Journal of Shellfish Research, Vol. 27, No. 4, 08.2008, p. 907-915.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Population assessment of the pacific green spiny lobster Panulirus gracilis in Pacific Panama

    AU - Guzman, Hector M.

    AU - Cipriani, Roberto

    AU - Vega, Angel J.

    AU - Lopez, Melina

    AU - Mair, James M.

    PY - 2008/8

    Y1 - 2008/8

    N2 - Populations of the green spiny lobster Panulirus gracilis (Streets 1871) have sustained increasing harvesting pressure in Pacific Panama for decades, but basic information about their biology and ecology in the region is scarce. This study provides baseline data for the densities and biometrics of P. gracilis in Las Perlas and Coiba Archipelagos. The number of surveyed lobsters in both archipelagos was surprisingly low (85 in Las Perlas and 67 in Coiba), and average densities were dismal (4.1 ± 8.8 ind. ha-1 and 5.3 ± 7.6 ind. ha-1, respectively). Saboga and San Jose Islands had the highest relative densities of P. gracilis in Las Perlas, whereas intermediate relative densities were found only on Coiba Island in the Coiba Archipelago. Lobster density was not associated with either substrate or depth. In Las Perlas, female carapace length (CL) was 40-95 mm and that of males was 25-100 mm; in Coiba, female CL was 45-124 mm and male CL was 45-121 mm. In Las Perlas, the smallest lobster with eggs had a CL = 65 mm and a tail length (TL) = 120 mm, whereas the smallest in Coiba had a CL = 60 mm and a TL = 81-115 mm. We recommend implementing: (1) the minimum capture CL as the average carapace length at which half of the lobster population from Coiba is adult (CL = 84 mm; TL = 112-155 mm); (2) a fishing season no longer than 6 mo; (3) management decisions involving local fishermen and native peoples; (4) marine reserves or no-take areas (NTA); and (5) long-term monitoring plans, as the best current options to insure the survival of P. gracilis in the region.

    AB - Populations of the green spiny lobster Panulirus gracilis (Streets 1871) have sustained increasing harvesting pressure in Pacific Panama for decades, but basic information about their biology and ecology in the region is scarce. This study provides baseline data for the densities and biometrics of P. gracilis in Las Perlas and Coiba Archipelagos. The number of surveyed lobsters in both archipelagos was surprisingly low (85 in Las Perlas and 67 in Coiba), and average densities were dismal (4.1 ± 8.8 ind. ha-1 and 5.3 ± 7.6 ind. ha-1, respectively). Saboga and San Jose Islands had the highest relative densities of P. gracilis in Las Perlas, whereas intermediate relative densities were found only on Coiba Island in the Coiba Archipelago. Lobster density was not associated with either substrate or depth. In Las Perlas, female carapace length (CL) was 40-95 mm and that of males was 25-100 mm; in Coiba, female CL was 45-124 mm and male CL was 45-121 mm. In Las Perlas, the smallest lobster with eggs had a CL = 65 mm and a tail length (TL) = 120 mm, whereas the smallest in Coiba had a CL = 60 mm and a TL = 81-115 mm. We recommend implementing: (1) the minimum capture CL as the average carapace length at which half of the lobster population from Coiba is adult (CL = 84 mm; TL = 112-155 mm); (2) a fishing season no longer than 6 mo; (3) management decisions involving local fishermen and native peoples; (4) marine reserves or no-take areas (NTA); and (5) long-term monitoring plans, as the best current options to insure the survival of P. gracilis in the region.

    KW - Coiba

    KW - Fishery management

    KW - Green spiny lobster

    KW - Las perlas

    KW - Overfishing

    KW - Panama

    KW - Panulirus gracilis

    UR - http://www.scopus.com/inward/record.url?scp=50049106770&partnerID=8YFLogxK

    U2 - 10.2983/0730-8000(2008)27[907:PAOTPG]2.0.CO;2

    DO - 10.2983/0730-8000(2008)27[907:PAOTPG]2.0.CO;2

    M3 - Article

    VL - 27

    SP - 907

    EP - 915

    JO - Journal of Shellfish Research

    JF - Journal of Shellfish Research

    SN - 0730-8000

    IS - 4

    ER -