Topic
Panulirus pascuensis
About: Panulirus pascuensis is a research topic. Over the lifetime, 7 publications have been published within this topic receiving 75 citations.
Papers
Journal Article•
TL;DR: It is the conclusion that the Chthamalus-Euraphia dichotomy for the bulk of the six-plated chthamalid barnacles is not now adequate and the Notochthamalinae, a new subfamily of South Pacific species with card setae on some or all of the anterior cirri is recognised.
Abstract: Euraphia devaneyi new species (of the hernbeli-group) is described from Easter Island. Rehderella belyaevi (Zevina and Kurshakova) new genus is given a supplementary description and its range extended from Easter Island to Pitcairn Island. Consideration of the pleisomorphies and apomorphies of R. belyaevi and related genera necessitates recognition of the Notochthamalinae, a new subfamily of South Pacific species with card setae on some or all of the anterior cirri. Diagnoses are given for Notochtharnalus new genus, for N. scabrosus from South America, Nesochtharnalus new genus, for N. intertextus from widespread west Pacific localities, and Charnaesipho Darwin containing three species from New Zealand and Australia. Both chthamalids of Easter Island are peripheral Polynesian endemics, and the historical biogeography of this in connection with such young islands is discussed. Chthamalid barnacles are characteristic of rocky shores all round the world. Twenty-five species have been assigned to the genus Chthamalus or the closely related genus Euraphia (Newman and Ross, 1976; Dando and Southward, 1980). The distinction between Chthamalus and Euraphia has rested primarily on the nature ofthe mandible; quadridentoid with a combed lower margin in the former and tridentoid with a pectinate lower angle in the latter. Difficulties with this were raised by Pope (1965), particularly with Euraphia intertextus (Darwin) in which characters other than the mandible relate it to Chamaesipho columna (Spengler) which has a quadridentoid mandible. Our attention was refocused on this and related matters when we examined barnacles from Easter Island. The commonest barnacle on the basalt shores there is a chthamalid described and named Chthamalus belyaevi by Zevina and Kurshakova (1973). It has a Chthamalus-like mandible yet is tridentoid, and shows clear shell relationships with E. intertexta of the tropical western Pacific as well as with Chthamalus scabrosus Darwin and Chamaesipho spp. of southeast and southwest shores of the South Pacific respectively. It is our conclusion that the Chthamalus-Euraphia dichotomy for the bulk of the six-plated chthamalid barnacles is not now adequate. The barnacle fauna of Easter Island is meager. Only three shore species are known: a new species of Euraphia described herein, the chthamalid C. belyaevi here given a supplementary description and generically redefined, and a Tesseropora of small size and similar to specimens that have been collected from Norfolk Island and the Hawaiian Islands, and also reminiscent of T. atlantica from Bermuda and the Azores in the Atlantic Ocean (Newman and Ross, 1977). Two stalked barnacles are known: Lepas anserifera Linnaeus was collected on floating debris (BAF, pers. obs.) and Temnaspis cf. hawaiensis (Pilsbry) was shown as commensal on the mouthparts of the lobster Panulirus pascuensis Reed by Holthuis (1972). This paper pays particular attention to the two Easter Island chthamalids, considers their relationship to other chthamalids of the South Pacific Ocean, and
29 citations
TL;DR: In this article, the authors reconstructed fisheries catches in the Exclusive Economic Zone (EEZ) of the Easter Island Province of Chile over the 1950-2010 time period using anecdotal information, historical descriptions and the limited quantitative information available.
Abstract: Easter Island (Rapa Nui) is well studied in terms of its archaeology; however, information regarding the history of fishing is extremely limited. Marine resources have likely been exploited from the time the first Polynesians arrived on this remote island. While large pelagics are part of the traditional Rapa Nui diet, inshore fish and invertebrates have also made their way into the diet. Official records of fisheries catches in what is now the Easter Island Province of Chile, which also includes the uninhabited island of Salas y Gomez, are very limited and were available for only some years. Using anecdotal information, historical descriptions and the limited quantitative information available, we reconstructed fisheries catches in the Exclusive Economic Zone (EEZ) of the Easter Island Province over the 1950-2010 time period. Totaling almost 6,000 ton, legal catches have been increasing rapidly since the late 1970s, but are now stagnating at around 150-200 ton yr -1 . The main species targeted were Pacific chub or 'nanue' (Kyphosus sandwicensis) and yellowfin tuna or 'kahi ave ave' (Thunnus albacares), with spiny lobster or 'ura' (Panulirus pascuensis) being the most important invertebrate species. There are indications of a substantial illegal fishery for large pelagics in the EEZ of the province, estimated at 200-2,000 ton yr -1 , which may have operated for two decades and may be the cause for the declining artisanal catch of tuna by Rapa Nui fishers. Continued pressure on these geographically remote oceanic and inshore marine species, especially those popular amongst tourists, makes accounting for fisheries catches an even greater priority.
28 citations
1 Jan 2014
TL;DR: In this article, the authors reconstructed fisheries catches in the Exclusive Economic Zone (EEZ) of the Easter Island Province of Chile over the 1950-2010 time period using anecdotal information, historical descriptions and the limited quantitative information available.
Abstract: Easter Island (Rapa Nui) is well studied in terms of its archaeology; however, information regarding the history of fishing is extremely limited. Marine resources have likely been exploited from the time the first Polynesians arrived on this remote island. While large pelagics are part of the traditional Rapa Nui diet, inshore fish and invertebrates have also made their way into the diet. Official records of fisheries catches in what is now the Easter Island Province of Chile, which also includes the uninhabited island of Salas y Gomez, are very limited and were available for only some years. Using anecdotal information, historical descriptions and the limited quantitative information available, we reconstructed fisheries catches in the Exclusive Economic Zone (EEZ) of the Easter Island Province over the 1950-2010 time period. Totaling almost 6,000 metric tonnes, legal catches have been increasing rapidly since the late 1970s, but are now stagnating at around 150-200 t·year -1 . The main species targeted were Pacific chub ('nanue'; Kyphosus sandwicensis) and yellowfin tuna ('kahi'; Thunnus albacares), with spiny lobster ('ura'; Panulirus pascuensis) being the most important invertebrate species. There are indications of a substantial illegal fishery for large pelagics in the EEZ of the province, estimated at 200-2,000 t·year -1 , which may have operated for two decades and may be the cause for the declining artisanal catch of tuna by Rapa Nui fishers. Continued pressure on these geographically remote oceanic and inshore marine species, especially those popular amongst tourists, makes accounting for fisheries catches an even greater priority.
16 citations
TL;DR: A literature review of stomatopoda and decapod records from the Chilean oceanic islands is presented in this paper, focusing on three families of Stomata and 57 families of Decapoda.
Abstract: The Chilean oceanic islands are located in the southeastern Pacific Ocean and include Easter Island, Salas y Gomez Island, Desventuradas Islands (San Felix Island and San Ambrosio Island), and the Juan Fernandez Archipelago. They are of volcanic origin and are the emerged peaks of seamounts that form part of the Salas y Gomez and Nazca ranges that rise up from the Nazca tectonic plate. The islands are at a great distance from each other and from the South American continent, and their surrounding areas have depths around 4000 m to the ocean floor. The objective of this study is to update stomatopods and decapods records from these islands, from their surrounding waters and from the seamount ranges of which they are part of. Given that there is little information on some of these sites, and the records are disperse, a literature review is carried out, analysing different sources including both published reports and reports with limited circulation. To date, three families of Stomatopoda with five species and 57 families of Decapoda with 194 species have been recorded. Of this total, three species represent potential resources to develop fisheries and only another three are exploited to differing degrees ( Jasus frontalis , Panulirus pascuensis and Chaceon chilensis ). Their more relevant aspects, including their exploitation status, are described.
9 citations
TL;DR: Panulirus pascuensis stage I phyllosoma were observed in fall, suggesting that larval development would be synchronized with the productivity cycle in the region of Rapa Nui, where maximum chlorophyll concentration is observed during austral winter.
Abstract: Among the most striking crustaceans from Rapa Nui Island (27° S, 109° 22′ W) is the endemic lobster Panulirus pascuensis , commonly known as the spiny lobster. This species is also present in Pitcairn Island and the Salas y Gomez Ridge. Larvae of this species pass through different phyllosoma stages until metamorphosis, during which they molt to a puerulus, a transitional stage adapted to benthic life. This species is an important fishery resource for inhabitants of Rapa Nui. However, there are several gaps in biological knowledge of this species, including its ontogeny. We sampled zooplankton to obtain first-stage P. pascuensis phyllosoma during three oceanographic campaigns around Rapa Nui (April 2015, September 2015, and March 2016). Individuals were encountered between the surface and 200 m depth with an abundance of 1.3 indiv./1,000 m3. These individuals, along with laboratory-hatched phyllosoma, allowed us to describe the morphology of this larval stage. Panulirus pascuensis stage I phyllosoma were observed in fall, suggesting that larval development would be synchronized with the productivity cycle in the region of Rapa Nui, where maximum chlorophyll concentration is observed during austral winter.
3 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2018 | 1 |
| 2017 | 2 |
| 2016 | 1 |
| 2014 | 2 |
| 1987 | 1 |