6533b860fe1ef96bd12c3b78
RESEARCH PRODUCT
First record of Pachygrapsus transversus (Gibbes, 1850) (Brachyura, Grapsidae) in Italian waters
VaccaroPipitonesubject
Settore BIO/07 - Ecologiaeducation.field_of_studybiologyPachygrapsus transversusGrapsidaePopulationIntertidal zoneForestryAquatic Sciencebiology.organism_classificationlanguage.human_languageEastern mediterraneanPachygrapsus transversusUn habitatlanguageAnimal Science and ZoologyCarapaceeducationSiciliandescription
[Pachygrapsus transversus (Gibbes, 1850) is reported for the first time from Italian waters. This crab was collected at Ustica Island and at several other localities on NW Sicily (southern Tyrrhenian Sea) on vermetid reefs, an intertidal habitat frequent in the sampling area. P. transversus, whose distributional range covers the warm and warm-temperate areas of the eastern and western Atlantic and the eastern Pacific, was already known from the eastern Mediterranean since the 1920s; prior to this paper it was recorded in the western Mediterranean only in 1980 and 1994 with very few specimens.There are no data to ascertain the origin of the Sicilian population, i.e., natural or ship-mediated diffusion; either is considered possible in theory. Yet, the presence of young specimens (around 5 mm carapace length) and ovigerous females, as well as the numerical abundance at one of the Sicilian sites, suggest that the NW Sicily population is stable and well acclimatized. Pachygrapsus transversus (Gibbes, 1850) est signale pour la premiere fois dans les eaux italiennes. Ce crabe a ete recolte a l'ile d'Ustica et dans plusieurs autres localites du nord-ouest de la Sicile (partie sud de la mer Tyrrhenienne) sur des trottoirs a vermets, un habitat intertidal frequent dans la zone de recolte. P. transversus, dont la zone de distribution couvre les zones tiedes et temperees de l'Atlantique est et ouest et l'est du Pacifique etait deja connu dans l'est de la Mediterranee depuis les annees 1920; il a ete anterieurement signale dans la partie ouest de la Mediterranee seulement en 1980 et 1994 avec peu de specimens.Aucune donnee ne permet d'affirmer l'origine de la population sicilienne, naturelle ou arrivee par bateaux; en theorie les deux sont possibles. Cependant, la presence de jeunes specimens (autour de 5 mm de longueur de carapace) et de femelles ovigeres, ainsi que l'abondance numerique sur l'un des sites sicilien, suggere que la population NO de la Sicile est stable et bien acclimatee., Pachygrapsus transversus (Gibbes, 1850) is reported for the first time from Italian waters. This crab was collected at Ustica Island and at several other localities on NW Sicily (southern Tyrrhenian Sea) on vermetid reefs, an intertidal habitat frequent in the sampling area. P. transversus, whose distributional range covers the warm and warm-temperate areas of the eastern and western Atlantic and the eastern Pacific, was already known from the eastern Mediterranean since the 1920s; prior to this paper it was recorded in the western Mediterranean only in 1980 and 1994 with very few specimens.There are no data to ascertain the origin of the Sicilian population, i.e., natural or ship-mediated diffusion; either is considered possible in theory. Yet, the presence of young specimens (around 5 mm carapace length) and ovigerous females, as well as the numerical abundance at one of the Sicilian sites, suggest that the NW Sicily population is stable and well acclimatized. Pachygrapsus transversus (Gibbes, 1850) est signale pour la premiere fois dans les eaux italiennes. Ce crabe a ete recolte a l'ile d'Ustica et dans plusieurs autres localites du nord-ouest de la Sicile (partie sud de la mer Tyrrhenienne) sur des trottoirs a vermets, un habitat intertidal frequent dans la zone de recolte. P. transversus, dont la zone de distribution couvre les zones tiedes et temperees de l'Atlantique est et ouest et l'est du Pacifique etait deja connu dans l'est de la Mediterranee depuis les annees 1920; il a ete anterieurement signale dans la partie ouest de la Mediterranee seulement en 1980 et 1994 avec peu de specimens.Aucune donnee ne permet d'affirmer l'origine de la population sicilienne, naturelle ou arrivee par bateaux; en theorie les deux sont possibles. Cependant, la presence de jeunes specimens (autour de 5 mm de longueur de carapace) et de femelles ovigeres, ainsi que l'abondance numerique sur l'un des sites sicilien, suggere que la population NO de la Sicile est stable et bien acclimatee.]
year | journal | country | edition | language |
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2005-01-01 | Crustaceana |