Topic
Treefish
About: Treefish is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 3 citations. The topic is also known as: Sebastes serriceps.
Papers
TL;DR: In this article, the authors used remotely sensed and in situ measurements of currents and hydrography to reconstruct pathways taken by pelagic juvenile fishes to offshore oil platforms from remotely sensed data.
Abstract: Recent pathways taken by pelagic juvenile fishes to offshore oil platforms were reconstructed from remotely sensed and in situ measurements of currents and hydrography. Juvenile fishes comprised 52.8% (16,952 of 23 species) of all individuals (32,080 juveniles and adults of 35 species) observed during scuba surveys conducted about twice per week at two platforms in the eastern Santa Barbara Channel from May to August 2004. Blacksmith, Chromis punctipinnis (Cooper, 1863), and rockfishes (genus Sebastes, at least 18 taxa) comprised 95.1% of the recruits. Almost all rockfishes recruited to the deepest part of the platforms surveyed (26 and 31 m), while most blacksmith recruited in shallower waters. The onset of the recruitment season for juvenile rockfishes (genus Sebastes, Scorpaenidae) coincided with the advection of a low salinity water mass into the channel from the Southern California Bight. Before arrival of this water mass, water at the platforms resembled upwelled, high salinity water around the Point Conception region at the western channel entrance. Settlement pulses of rockfishes and blacksmith were observed during advective events when salinity decreased in the upper 40 m and currents turned northwestward or intensified in that direction. Two abundant rockfish species [bocaccio, Sebastes paucispinis Ayres, 1854, and treefish, Sebastes serriceps (Jordan and Gilbert, 1880)] showed synchronous patterns of juvenile settlement between platforms separated by 7 km. Our findings indicate that currents from the bight, rather than from central California, supplied recruits to settlement habitat in the eastern channel and that the spatial scale of connectivity for some fish populations in this region is greater than the channel itself.
13 citations
TL;DR: Four species of eastern North Pacific rockfishes of the genus Sebastes are easily distinguished from their congeners by the coloration characteristic of broad lateral banding by Hyde and Vetter (2007), shown to be closely related.
Abstract: Four species of eastern North Pacific rockfishes of the genus Sebastes are easily distinguished from their congeners by the coloration characteristic of broad lateral banding These species are the Tiger Rockfish, S nigrocinctus; Treefish, S serriceps; Flag Rockfish, S rubrivinctus; and Redbanded Rockfish, S babcocki These species are shown to be closely related and have been placed in the Sebastichthys clade by Hyde and Vetter (2007) The Tiger Rockfish and Treefish are distinguished by differences in their general body form and coloration of the banding pattern The Treefish invariably exhibits alternating black, brown, or dark green and yellow bars, and the lips are distinctly pink to red (rarely without coloration) The Tiger Rockfish manifests greater variation in banding with the darker bars being primarily red, but can vary from reddish-black to reddish-brown The alternating lighter bars are mainly white, but occasionally show a reddish hue The Flag and Redbanded rockfishes possess alternating red and white bars (Love et al, 2002) The general similarity in body shape and color pattern between the latter two species was cause for them to be considered conspecific from shortly after the year of description of S babcocki (Thompson, 1915) until Rosenblatt and Chen (1972) clarified the distinction of these species and pointed out a number of meristic and morphological characteristics that definitively separate these two species The Flag Rockfish was described in the late 1800’s (Jordan and Gilbert, 1880) On 10 February 2004, a uniformly red rockfish (Fig 1) was encountered by Diane Haas, then a Fishery Technician with the Pacific States Marine Fisheries Commission, during routine sampling of commercial groundfishes The F/V Alex Kevin D had unloaded three market categories of groundfishes: Longspine Thornyhead, Sebastolobus altivelis; Shortspine Thornyhead, S alascanus; and Blackgill Rockfish, Sebastes melanostomus, which were to be sampled The uniformly red rockfish was included in the Blackgill Rockfish market category, where a 50 pound cluster was randomly selected from a total landing of 764 pounds The species composition of the cluster consisted of Blackgill Rockfish, one Rosethorn Rockfish, S helvomaculatus, and the uniformly red rockfish Also present in the landing, but not included in the sample, were at least two Rougheye Rockfish, S aleutianus, (from California the species is now considered as Blackspotted Rockfish, Sebastes melanostictus [Orr and Hawkins, 2008]) The fishes were taken in Monterey Bay (ca 36u479 N, 122u079 W) by commercial longline gear on the continental slope at a depth of 200–260 fathoms (366–475 meters) The red rockfish was not immediately identifiable with any of the red-colored, outer shelf-upper slope rockfishes normally encountered off central California and was Bull Southern California Acad Sci 111(1), 2012, pp 22–24 E Southern California Academy of Sciences, 2012
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 1 |
| 2012 | 1 |