Bulletin (Southern California Academy of Sciences)最新文献

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Spots on Sides of Giant Sea Bass (Stereolepis gigas Ayres, 1859) are Likely Unique to Each Individual 巨大的海鲈鱼(Stereolepis gigas Ayres, 1859)身上的斑点可能是每个个体独有的
Bulletin (Southern California Academy of Sciences) Pub Date : 2018-06-07 DOI: 10.3160/soca-117-01-77-81.1
M. Love, Katelin Seeto, Conner Jainese, M. Nishimoto
{"title":"Spots on Sides of Giant Sea Bass (Stereolepis gigas Ayres, 1859) are Likely Unique to Each Individual","authors":"M. Love, Katelin Seeto, Conner Jainese, M. Nishimoto","doi":"10.3160/soca-117-01-77-81.1","DOIUrl":"https://doi.org/10.3160/soca-117-01-77-81.1","url":null,"abstract":"The giant sea bass (Sterolepis gigas Ayres, 1859; hereafter GSB) is a large and presumably keystone nearshore reef species found from California, USA to southern Mexico, including the Gulf of California. Giant sea bass were severely overfished in the twentieth century leading to local extinctions. Restrictions on harvest off California have led to at least a mild resurgence in the population (Pondella and Allen 2008; House et al. 2016) and, based on a genetics study, an effective population size of perhaps 500 individuals off southern California and northern Baja California (Chabot et al. 2015). However, there has been no direct assessment of their numbers off California. From at least spring through fall, it is likely that most, if not all, GSB inhabit nearshore waters to depths of perhaps 30 m (Love 2011). We are interested in determining if recreational divers can assist us in determining the abundance of this species in California waters as divers can often easily approach and photograph these fish. If there was a way of identifying individuals underwater from still or video images, images from divers could help us determine the number of individuals in the sampling area. This process would require individuals to have unique markings. Giant sea bass of all ages have dark spots or blotches on their heads and flanks and these might be idiosyncratic and thus useful in identifying individuals. Among fishes, markings of various sorts, including spots and stripes, have been shown to be unique to individuals and thus may be of value in determining species abundances (Meekan et al. 2006; van Tienhoven et al. 2007; Claydon et al. 2010; Giglio et al. 2014). To determine if we could use the spotting on the flanks of GSB as unique markers, we made preliminary observations of GSB spot patterns at the Aquarium of the Pacific in Long Beach. Here we took photographs of the three GSBs (two adults and one likely subadult) on 18 June, 1 July and 3–4 July 2014. We photographed these fish at least hourly for 12 hours (18 June, 1 July) or over 24 hours (3–4 July). Over the past few years, pattern recognition software, such as the Individual Identification System (I3S Spot 4.02; www.reijns.com/i3s, hereafter referred to as I3S), have been developed to partially automate the process of reviewing images and helping to identify individuals (van Tienhoven et al. 2007). We used I3S to compare spots on the sides of each individual and between individuals. Using both this software and visual comparisons, we found: 1) the spot patterns did not change over the 12 or 24 hours surveyed, 2) the spot patterns were unique to an individual, and 3) each pattern was unique to a side of each individual (i.e., the spot patterns were asymmetric). Soon after these analyses, we acquired from Ms. Sandy Trautwein (Aquarium of the Pacific) images taken in 2003 of two of these Aquarium of the Pacific fish. Again, using I3S and a visual inspection, we determined that the spot patterns of the","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"16 1","pages":"77 - 81"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77645598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Investigating the Disappearance of Short-finned Pilot Whales (Globicephala macrorhynchus) from Southern California: Did Fisheries Play a Role? 调查南加州短鳍领航鲸(Globicephala macrorhynchus)的消失:渔业是否起作用?
Bulletin (Southern California Academy of Sciences) Pub Date : 2018-06-07 DOI: 10.3160/soca-117-01-29-51.1
T. Jefferson, Alisa Schulman-Janiger
{"title":"Investigating the Disappearance of Short-finned Pilot Whales (Globicephala macrorhynchus) from Southern California: Did Fisheries Play a Role?","authors":"T. Jefferson, Alisa Schulman-Janiger","doi":"10.3160/soca-117-01-29-51.1","DOIUrl":"https://doi.org/10.3160/soca-117-01-29-51.1","url":null,"abstract":"Abstract There is a mystery surrounding the disappearance of short-finned pilot whales (Globicephala macrorhynchus) from southern California. This species was very common in these waters through the early 1980s, with an apparently seasonally-resident population centered around Santa Catalina Island in the Southern California Bight. From 1980-1985, pilot whale numbers off Catalina Island declined dramatically, and they eventually disappeared. One theory has been proposed for this phenomenon, suggesting that a strong El Niño event in 1982/83 resulted in a failure of their main prey, market squid (Doryteuthis opalescens), which lead to their departure. However, we argue that previously underestimated impacts from fishery by-catch and other anthropogenic effects may have actually been the primary driver. Information from diverse sources show that from the 1950s to 1980s, pilot whales were subject to extensive by-catches in purse-seine nets, lampara nets, and oceanic driftnets, as well as intentional shooting by fishermen, and live-captures for the aquarium industry. As a result, dozens of animals may have been removed in some years. From 1952 to 2014, we have documented no less than 232 individuals removed from southern California, with >52% through known anthropogenic factors. If these removals primarily affected the Catalina Island ‘residents’, they would have had a severe impact on that population. We conclude that human interactions of various types almost certainly played an important, and previously unrecognized, role in the disappearance of short-finned pilot whales from southern California waters.","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"116 1","pages":"29 - 51"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88846595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aspects of the Life Histories of Pinkrose Rockfish (Sebastes simulator) and Swordspine Rockfish (Sebastes ensifer) with Notes on the Subgenus Sebastomus 粉玫瑰岩鱼(模拟岩鱼)和剑棘岩鱼(模拟岩鱼)的生活史及其亚属注释
Bulletin (Southern California Academy of Sciences) Pub Date : 2018-06-07 DOI: 10.3160/soca-117-01-64-76.1
M. Love, M. McCrea, L. Kui
{"title":"Aspects of the Life Histories of Pinkrose Rockfish (Sebastes simulator) and Swordspine Rockfish (Sebastes ensifer) with Notes on the Subgenus Sebastomus","authors":"M. Love, M. McCrea, L. Kui","doi":"10.3160/soca-117-01-64-76.1","DOIUrl":"https://doi.org/10.3160/soca-117-01-64-76.1","url":null,"abstract":"The rockfishes, genus Sebastes, form an extremely speciose group that often dominates the fish assemblages of California reefs between depths of 30 and 300 m (Love et al. 2002). The genus is divided into a number of subgenera (estimated at between 13 and 15, Hyde and Vetter 2007) among which the subgenus Sebastomus is particularly well characterized by congruencies in both morphology and genetics (Chen 1971; Rochas-Olivares et al. 1999; Hyde and Vetter 2007). In general, species in this subgenus are relatively small (to a maximum of 56 cm total length) (Table 1) and all are benthic or epibenthic (Love 2011). In addition, with the exception of Sebastes helvomaculatus, all of the North American species are relatively warm-water, and most are rare or absent from waters north of central California (Table 1). The basic biology and ecology of most of the Sebastomus living in the northeastern Pacific (i.e., with ranges extending at least into California waters) have been fairly well documented (summarized in Love et al. 2002; Love 2011; Fields 2016). The main exception was Sebastes simulator, the pinkrose rockfish, and to a lesser extent, Sebastes ensifer, the swordspine rockfish, whose life histories, were poorly understood. In this paper, we report on a number of aspects on the biology of S. simulator, provide supplementary data on the biology of Sebastes ensifer, and update basic information on all species in the subgenus Sebastomus. We collected specimens by hook-and-line from southern California waters (primarily from the northern Channel Islands), immediately placed them on ice aboard a research vessel, and then froze them in the lab for later examination. All specimens were measured [standard (SL), fork (FL), and total (TL) length] to the nearest millimeter and most were weighed (to the nearest 0.1 g). All lengths are reported as TL. We used sagittal otoliths for age determinations; these were removed and stored dry in coin envelopes. For age determinations, each otolith was glued to a wooden block, placed on a Bueller Isomet low-speed saw and a 0.05-cm wafer was cut from it, using two diamond-edge blades separated by a stainless-steel shim. Before reading, the wafers were slightly burned over an alcohol lamp. The wafers were then placed in a water-filled, blackbottomed watch glass and examined under a dissecting microscope. All wafers were read twice by M. Love. When reading did not agree, the otoliths were read again. The value of two coincident readings was accepted as the best estimate of age. We judged that the otoliths of about 5% of the specimens were unreadable due to poorly developed annuli. Lengths at ages were estimated by direct observation of otolith annuli and by using the von Bertalanffy growth model:","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"1 1","pages":"64 - 76"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77960624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Comparison of the Polychaetous Annelids Populations on Suspended Test Panels in Los Angeles Harbor in 1950-1951 with the Populations in 2013-2014 1950-1951年洛杉矶港悬挂试验板上多毛环节动物种群与2013-2014年种群比较
Bulletin (Southern California Academy of Sciences) Pub Date : 2018-06-07 DOI: 10.3160/soca-117-01-82-90.1
D. Reish, T. Gerlinger, R. Ware
{"title":"Comparison of the Polychaetous Annelids Populations on Suspended Test Panels in Los Angeles Harbor in 1950-1951 with the Populations in 2013-2014","authors":"D. Reish, T. Gerlinger, R. Ware","doi":"10.3160/soca-117-01-82-90.1","DOIUrl":"https://doi.org/10.3160/soca-117-01-82-90.1","url":null,"abstract":"Abstract A 14-month study was conducted of the polychaetous annelids present on attached wooden blocks at nine stations in Los Angeles Harbor in 2013-2014. The results were compared to a similar study conducted at the same stations in 1950-1951. The primary objective in both studies was to determine the location and occurrence of marine borers in the harbor. Since fouling organisms, including polychaetes, attached to the wooden blocks, it also provided an opportunity to study the polychaetes that settled on the blocks. The number of polychaete species in these two studies increased from 22 to 71. The serpulid Hydroides elegans was a dominate species in both studies but the pollution indicator Capitella capitata, common in the earlier study, was rare in the recent study. There was a seasonal occurrence in both the number of species and specimens with highs in the warmer months and lows from December through March in both studies. Many environmental changes have occurred in the Los Angeles Harbor complex over the past 63 years. New harbor piers constructed that extend into the Outer Harbor, channels have been dredged deeper and pollution abatement programs initiated. The water quality has been improved especially in the Inner Harbor as a result of these changes where the dissolved oxygen in the water was low or absent in 1950-1951 but higher (over 6.0 mg/L) in 2013-2014. This study is unusual since long-term, seasonal comparisons of marine invertebrate populations are uncommon.","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"45 1","pages":"82 - 90"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80993809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Late Quaternary Chorus Frog (Pseudacris) from the Channel Islands, California 加利福尼亚海峡群岛的晚第四纪合唱蛙
Bulletin (Southern California Academy of Sciences) Pub Date : 2018-06-07 DOI: 10.3160/soca-117-01-52-63.1
J. Mead, Justin Wilkins, P. Collins
{"title":"Late Quaternary Chorus Frog (Pseudacris) from the Channel Islands, California","authors":"J. Mead, Justin Wilkins, P. Collins","doi":"10.3160/soca-117-01-52-63.1","DOIUrl":"https://doi.org/10.3160/soca-117-01-52-63.1","url":null,"abstract":"Abstract Fossil and subfossil remains of the vertebrate faunas from the northern Channel Islands, southern California, have been studied for many decades. Continued interest has focused on skeletal remains of birds, rodents, and mammoths from archaeological and paleontological localities, but considerably less attention has been placed on the detailed description of the herpetofauna (salamanders, anurans [frogs and toads], lizards, and snakes) on the Channel Islands. We present descriptions of an ilium of an anuran from Santa Rosa Island (Larramendy North; radiocarbon dating at least 13,393 calibrated years ago) and two tibiofibulae San Miguel Island (Daisy Cave) dating from earliest and middle late Holocene layers. We identify the fossil ilium as Pseudacris sp. (chorus frog): 1) it is the lowest level that skeletal morphology permits us to attempt, 2) realizing that it appears morphologically closest to P. regilla, and 3) yet realizing that not all species of Pseudacris and Hyla have been directly compared or are understood. The extant amphibian fauna on these islands is depauperate. The remains presented here represent the first description of a fossil anuran from the northern Channel Islands. It is now understood that a chorus frog lived on glacial-age Santarosae Island, yet it is not understood when its distribution was reduced to just the present two largest islands, Santa Rosa and Santa Cruz.","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"82 1","pages":"52 - 63"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88905768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Long-term Qualitative Changes in Fish Populations and Aquatic Habitat in San Mateo Creek Lagoon, Northern San Diego County, California 加州北部圣地亚哥县圣马特奥溪泻湖鱼类种群和水生栖息地的长期质变
Bulletin (Southern California Academy of Sciences) Pub Date : 2018-06-07 DOI: 10.3160/soca-117-01-1-28.1
C. Swift, D. Holland, Melissa Booker, R. Woodfield, A. Gutierrez, Steve Howard, J. Mulder, Brian Lohstroh, E. Bailey
{"title":"Long-term Qualitative Changes in Fish Populations and Aquatic Habitat in San Mateo Creek Lagoon, Northern San Diego County, California","authors":"C. Swift, D. Holland, Melissa Booker, R. Woodfield, A. Gutierrez, Steve Howard, J. Mulder, Brian Lohstroh, E. Bailey","doi":"10.3160/soca-117-01-1-28.1","DOIUrl":"https://doi.org/10.3160/soca-117-01-1-28.1","url":null,"abstract":"Abstract Patterns of abundance were documented for 17 species of fish in the lagoon at the mouth of San Mateo Creek, northern San Diego County, California from occasional observations (1974-1997) and multiple samples per year (1998-2008). Fish populations varied with Mediterranean climate patterns of rainfall, stream flow and consequent breaching of the lagoon to the ocean through the barrier sand berm. Two near-record rainfall seasons occurred during this period; the 1997-1998 El Niño due to southern storms and the 2004-2005 winter wet season of more usual storms from the north and northwest. The lagoon stabilized as fresh to brackish in the dry season and for multiple years during successive drier winters. Closed conditions benefitted the native, federally endangered southern tidewater goby, Eucyclogobius kristinae, but were less suitable for other native estuarine species more common in wetter years. Wet year flows also reduced non-native freshwater species; some thrived and increased predation pressure on the southern tidewater goby. Historically these exotics were absent and two additional native species were present, partially armored threespine stickleback, Gasterosteus aculeatus, and the federally endangered southern steelhead, Oncorhynchus mykiss. Restoring and maintaining a full suite of native species will require a combination of 1) habitat maintenance and restoration, 2) control or management of non-native species, and 3) reintroduction of some native fishes and amphibians.","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"41 1","pages":"1 - 28"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78889342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Distribution of the Eastern Gray Squirrel (Sciurus carolinensis) within California as of 2015 2015年加利福尼亚东部灰松鼠(Sciurus carolinensis)的分布
Bulletin (Southern California Academy of Sciences) Pub Date : 2017-12-01 DOI: 10.3160/soca-116-03-204-213.1
C. M. Creley, A. Muchlinski
{"title":"Distribution of the Eastern Gray Squirrel (Sciurus carolinensis) within California as of 2015","authors":"C. M. Creley, A. Muchlinski","doi":"10.3160/soca-116-03-204-213.1","DOIUrl":"https://doi.org/10.3160/soca-116-03-204-213.1","url":null,"abstract":"Abstract The goals of this study were to map the distribution of the invasive eastern gray squirrel, Sciurus carolinensis, in California as of 2015 and to assess range expansion since the first documented sightings within the state. Range maps exist, but the last update by the California Department of Fish and Wildlife was in 2007. An assessment of the rate of range expansion over time has not been conducted, but comparisons between the locations of initial sightings and the current distribution are included. Location data were obtained from museum specimens, wildlife rehabilitation centers, a roadkill database, and research-grade citizen observations. Range maps were produced with ArcGIS software. Populations of eastern gray squirrels are currently concentrated around Sacramento and Davis, the western side of San Francisco Bay, within as well as north and east of Santa Cruz, within Monterey, north of the Golden Gate Bridge through Marin County as well as around Santa Rosa, and around the Bellota/Stockton area. Isolated populations on the eastern side of San Francisco Bay occur around Berkeley, Hayward, and Pleasanton. Observations extend into the foothills of the Sierra Nevada Mountain Range from north of the American River to south of the San Antonio River. We suggest that the eastern gray squirrel might become more damaging to the two native diurnal species of tree squirrels in California, Sciurus griseus and Tamiasciurus douglasii, than the introduced eastern fox squirrel (Sciurus niger).","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"1 1","pages":"204 - 213"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86491653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Reproductive Morphology of Male Black Perch (Embiotoca jacksoni) 雄性黑鲈(Embiotoca jacksoni)的生殖形态
Bulletin (Southern California Academy of Sciences) Pub Date : 2017-12-01 DOI: 10.3160/soca-116-03-219-226.1
E. C. Bond, Arthur D. Barraza, K. Forsgren
{"title":"Reproductive Morphology of Male Black Perch (Embiotoca jacksoni)","authors":"E. C. Bond, Arthur D. Barraza, K. Forsgren","doi":"10.3160/soca-116-03-219-226.1","DOIUrl":"https://doi.org/10.3160/soca-116-03-219-226.1","url":null,"abstract":"The surfperches (Embiotocidae) are comprised of 24 species, all but one species is marine and they range from central Baja California to Alaska (not including the Aleutian Islands) and Japan in the Pacific Ocean (Baltz 1984; Holbrook et al. 1997; Longo and Bernardi 2015). Embiotocids occupy various marine habitats including sandy bottoms, rocky reefs, kelp forests, and seagrass beds (Allen and Pondella 2006). The tule perch (Hypsterocarpus traskii) is freshwater and occupies lakes and rivers in central to northern California (Baltz and Moyle 1982; Wang 1986). The surfperches are among approximately 500 fishes that exhibit internal fertilization and bear live young (Contreras-Balderas 2006). During copulation, male surfperches utilize external copulatory structures (e.g., genital papilla, intromittent organs) to transfer sperm into the female reproductive tract (Blake 1868; Hubbs 1917; Tarp 1952; Gardiner 1978). Sperm are transferred in a mass, which contains spermatozoa from multiple lobules (Gardiner 1978; Grier et al. 2005). The sperm mass of surfperches has been referred to as a spermatophore in previous literature (Shaw and Allen 1977; Gardiner 1978). It should be noted however, that the term spermatophore refers to a package of sperm which is encapsulated by an extracellular capsule (Ginzburg 1968; Wourms 1981). In embiotocids, the spermatozoa come together to form large aggregates called spermatozeugmata, which are not enclosed by a membrane (Ginzburg 1968; Wourms 1981; Grier et al. 2005). Spermatozeugmata are common in internally fertilizing teleosts (Grier et al. 1978; Downing and Burns 1995; Fishelson et al. 2007; Uribe et al. 2014). Previous studies on black perch (Embiotoca jacksoni) have described multiple paternities of offspring by a given female, sperm competition, and population genetics (Reisser et al. 2009; Liu and Avise 2011; LaBrecque et al. 2014; Longo and Bernardi 2015; Johnson et al. 2016), but the basic reproductive biology of the black perch remains poorly understood. The black perch intromittent organs were first described by Agassiz (1853) who documented a smooth patch located on the anal fin with a surrounding sheath with a burrow to house the intromittent organ. The specific aims of our research note were to increase our understanding of the black perch reproductive biology. We have documented the progression of spermatocyte development and formation of the spermatozeugmata within the testicular tissue. Additionally, we have used histology to detail the association of the intromittent organs with the anal fin. We used paraffin histological techniques to describe the black perch spermatocyte and intromittent organ morphology. Male black perch (111 ± 30 mm SL; 70–157 mm; n = 8) were collected from June to November 2014 in eel grass beds in Los Angeles, Orange, and San Diego Counties with at least two sites per location using a beach seine and hook and line methods. Fish were euthanized using an overdose of tricane metha","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"41 1","pages":"219 - 226"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86430734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Status of the Isolated, Threatened Valle de la Trinidad Round-Tailed Ground Squirrel, Baja California, Mexico 墨西哥下加利福尼亚特立尼达谷圆尾地松鼠的孤立、受威胁状况
Bulletin (Southern California Academy of Sciences) Pub Date : 2017-12-01 DOI: 10.3160/soca-116-03-214-218.1
E. Mellink, S. Tremor, H. Thomas, N. Siordia, Jaime Luévano, S. Vanderplank
{"title":"Status of the Isolated, Threatened Valle de la Trinidad Round-Tailed Ground Squirrel, Baja California, Mexico","authors":"E. Mellink, S. Tremor, H. Thomas, N. Siordia, Jaime Luévano, S. Vanderplank","doi":"10.3160/soca-116-03-214-218.1","DOIUrl":"https://doi.org/10.3160/soca-116-03-214-218.1","url":null,"abstract":"Eric Mellink,1∗ Scott Tremor,2 Howard Thomas,2 Nadia Siordia,1,3 Jaime Luévano,1 and Sula Vanderplank1,4 1Departamento de Biologı́a de la Conservación, Centro de Investigación Cientı́fica y de Educación Superior de Ensenada, B.C., Carretera Ensenada-Tijuana #3918, 22860 Ensenada, B.C., México 2San Diego Natural History Museum. P.O. Box 121390. San Diego, CA 92112 3Calle 20 de Noviembre #150. Sauzal de Rodrı́guez. 22760 Ensenada, B.C., México 4Botanical Research Institute of Texas, 1700 University Drive, Fort Worth TX 76107","PeriodicalId":90803,"journal":{"name":"Bulletin (Southern California Academy of Sciences)","volume":"14 1","pages":"214 - 218"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87276832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effects of a Prolonged Drought on Southern Steelhead Trout (Oncorhynchus mykiss) in a Coastal Creek, Los Angeles, California 长期干旱对加州洛杉矶沿海小溪中南部钢头鳟鱼(Oncorhynchus mykiss)的影响
Bulletin (Southern California Academy of Sciences) Pub Date : 2017-12-01 DOI: 10.3160/soca-116-03-162-173.1
Rosi Dagit, E. Bell, K. Adamek, Jennifer Mongolo, E. Montgomery, Nina Trusso, P. Baker
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引用次数: 4
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