DOCSLIB.ORG

Food Habits of the Bay Anchovy, Anchoa Mitchilli, in Apalachicola Bay, Florida Peter F

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Food Habits of the Bay Anchovy, Anchoa Mitchilli, in Apalachicola Bay, Florida Peter F Northeast Gulf Science Volume 2 Article 6 Number 2 Number 2 12-1978 Food Habits of the Bay Anchovy, Anchoa mitchilli, in Apalachicola Bay, Florida Peter F. Sheridan Florida State University DOI: 10.18785/negs.0202.06 Follow this and additional works at: https://aquila.usm.edu/goms Recommended Citation Sheridan, P. F. 1978. Food Habits of the Bay Anchovy, Anchoa mitchilli, in Apalachicola Bay, Florida. Northeast Gulf Science 2 (2). Retrieved from https://aquila.usm.edu/goms/vol2/iss2/6 This Article is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Gulf of Mexico Science by an authorized editor of The Aquila Digital Community. For more information, please contact [email protected]. Sheridan: Food Habits of the Bay Anchovy, Anchoa mitchilli, in Apalachicola 126 Northeast Gulf Science Vol. 2, No.2 December 1978 opinion that the tag would be retained Marion T. Fannaly, Research Associate in successive molts. III, Coastal Ecology Lab, Center for In summary, the method described Wetland Resources, Louisiana State above of tagging crabs by internally University, Baton Rouge, LA 70803. anchoring an external spaghetti tag seems promising based on laboratory FOOD HABITS OF THE BAY trials. The only drawback observed in ANCHOVY, Anchoa mitchilli, IN the laboratory is that the tag some­ APALACHICOLA BAY, FLORIDA what hinders molting and may therefore Ontogenetic, spatial and temporal increase the susceptibility to predation aspects of the food habits of the bay of the crab during this vulnerable time. anchovy, Anchoa mitchilli, were exa­ It is possible that this drawback could be mined in fish collected from Apalachicola avoided by hand insertion of a con­ Bay, Florida. Calanoid copepods were ventional dart tag which has no leader the major constituent of the anchovy and would offer less resistance to molt­ diet, but their importance declined with ing. However, this type of tag would fish growth as larger zooplankters such also be more difficult to insert and re­ as mysids were consumed. Special­ quire punching a larger hole in the mem­ ization upon copepods led to moderate brane. The gun produces a small hole diet similarity among sites in the estuary, only about one mm in diameter and mini­ except in areas near the mouth of the mizes trauma to the crab. Apalachicola River where mysids, insect larvae, and cladocerans were major food ACKNOWLEDGEMENTS items. Copepods were the dominant prey in all months but were markedly less I would like to thank Dr. Frank Trues­ abundant prey in October, December, dale for his advice and assistance and Dr. and February when other crustaceans and James Bishop for the use of the aquaria. insect larvae became relatively more abundant. LITERATURE CITED INTRODUCTION Cargo, D. G. 1958. The migration of adult 'female blue crabs, Callinectes The bay anchovy, Anchoa mitchilli, sapidus Rathbun, in Chincoteague Bay IS one of the· most abundant fishes in and adjacent waters. J. Mar. Res. South Atlantic and Gulf coast estuaries, 16(3):180-191. ranking first in numerical abundance in Cronin, L. E. 1949. Comparison of many areas (Gunter, 1945; Perret, 1971; methods of tagging the blue crab. Swingle, 19 71; Gallaway and Strawn, Ecology 30(3) :390-394. 1974; Subrahmanyam and Drake, 1975; Fiedler, R. H. 1930. Solving the question Cain and Dean, 1976). An extended of crab migrations. Fishing Gazette spawning season has been indicated 47:18-21. (Gunter, 1938; Springer and Woodburn, Tagatz, M. E. 1968. Biology of the Blue 1960; Haese, 1973), and one study crab, Callinectes sapidus Rathbun, in (Dunham, 1972) found planktonic eggs the St. Johns River, Florida, U. S. and larvae throughout most of the year. Fish and Wildl. Serv. Fish. Bull. This accounts for the collection of 67(1) :17-33. juveniles less than 30 mm in length Published by The Aquila Digital Community, 1978 1 Gulf of Mexico Science, Vol. 2 [1978], No. 2, Art. 6 Short papers and notes 127 during many months in southern paper is concerned with refining pre­ estuaries. Major abundance peaks are vious observations on anchovy feeding generally observed in late summer by examining ontogenetic, spatial and through early winter, and the aforement­ temporal differences in feeding habits. ioned studies indicate that anchovies are able to exploit all habitats from marshes MATERIALS AND METHODS to open waters. In the Apalachicola estuary of northwest Florida, anchovies Anchovies were collected monthly by are the numerical dominant, comprising trawling with a 16' (5 m) otter trawl at 33% of the total catch of trawl-sus­ ten sites in the Apalachicola Bay - East ceptible fishes over five years of study Bay complex (Figure 1). Details of (Livingston e tal., 19 7 6, and unpublished field methods and area descriptions are data). Peak abundances are noted in given in Livingston et al. (1976). After October and November, with occasional field preservation in 10% Formalin, spring and summer peaks of lesser anchovies were rinsed and stored in 40% intensity. isopropanol until analysis. At such time, Apalachicola Bay is a relatively un­ fish were sorted into 10 mm (SL) size polluted, shallow, barrier island estuary classes by station and date of collection. dominated by the Apalachicola River. Stomachs of up to 25 individuals (as Much of the information concerning the collections permitted) from each size Apalachicola drainage basin has been re­ class were resected and their contents viewed by Livingston et al. (1974) and pooled. Stomach contents were then in Livingston and Joyce (1977). This analyzed as percent dry weight com- apalachicola river I I tate's hell swamP I gulf of mexico kilometers 0 6 Figure 1. Map of the Apalachicola estuary showing permanent sampling locations. https://aquila.usm.edu/goms/vol2/iss2/6 2 DOI: 10.18785/negs.0202.06 Sheridan: Food Habits of the Bay Anchovy, Anchoa mitchilli, in Apalachicola 12"8 Northeast Gulf Science Vol. 2, No.2 December 1978 Table 1. Stomach contents (%of total dry weight) of Anchoa mitchilli relative to standard length groups. Size (rnm) Material recovered 10-19 20-29 30-39 40-49 50-59 60-69 Avg. 10-69 Sand grains <.1 <.1 0.1 0.1 <.1 Detritus 2.2 2.5 2.3 2.4 1.6 Diatoms 0.7 1.0 0.8 0.4 0.2 0.5 Plant remains <.1 0.7 0.2 1.0 0.5 0.4 Scyphozoans <.1 <.1 <.1 Polychaete larvae 1.1 0.3 0.2 0.3 0.3 0.3 0.4 Polychaetes 0.2 0.2 2.2 0.3 0.5 Gastropod veligers <.1 0.4 0.2 0.2 0.1 Gastropods <.1 0.4 1.2 1.0 1.6 0.7 Bivalve veligers 0.3 0.5 0.8 0.6 0.8 0.5 Bivalves 1.3 <.1 0.3 0.4 0.2 0.4 Unassigned mollusc larvae <.1 0.1 <.1 Hydracarinids <.1 <.1 <.I Cladocerans 2.8 3.9 1.5 0.8 3.1 2.0 Ostracods 0.4 1.0 0.9 1.8 2.6 1.1 Calanoid copepods 97.8 82.3 72.7 60.6 52.7 49.3 69.2 Barnacle nauplii 0.2 4.8 4.2 1.2 0.4 1.8 Cumaceans <.1 <.1 0.2 0.1 0.2 <.1 Isopods <.1 <.1 <.1 Amphipods <.1 0.5 1.3 1.0 0.7 0.6 Mysids 1.1 1.7 3.1 17 .o 16.5 15.3 9.1 Shrimp zoeae 0.2 0.5 0.4 0.4 0.2 Shrimp postlarvae 2.1 1.6 0.4 0.2 0.7 Shrimp 0.2 0.3 2.3 0.7 0.6 Crab zoeae 0.2 0.4 0.9 0.5 0.3 Crab megalopae <.1 2.1 0.4 Unassigned decapod larvae 0.4 0.6 0.5 0.4 0.3 0.4 Insect larvae 4.5 2.6 2.2 4.3 12.0 4.3 Insects 0.4 <.1 <.1 <.1 <.1 Chaetognaths 0.6 0.1 Invertebrate eggs 2.0 3.2 2.1 1.5 0.6 1.6 Fish eggs 0.1 0.4 1.0 0.6 0.4 Fish larvae 1.1) <.1 Fishes 0.2 2.6 6.7 1.6 Number of individuals 28 851 1055 839 525 101 3399 Number of samples (after pooling) 44 69 62 56 18 250 Number of dates (maximum~31) 26 28 28 25 10 31 Number of stations (maximum~ 10) 8 9 9 10 8 10 positiOn by a gravimetric method de­ was obtained (due to mesh size of the scribed by Carr and Adams (1972, 1973). trawl), the apparent specialization upon copepods is thought to be real since RESULTS lab oratory studies of larval anchovies (Detwyler and Houde, 1970) indicated A total of 3,399 anchovy stomachs selection of copepods over other zoo­ were examined in the present study, plankters. Foods which increased in spanning the dates December, 1973, importance with growth of anchovies through October, 1976. When pooled included mysids (predominantly My­ as described above, 250 discrete station­ sidopsis bahia, occasionally M. bigelowi, date-size combinations were formed. M.- almyra, and Taphromysis bowmani), Calanoid copepods (Acartia spp.) were insect larvae (Dicrontendipes sp.), and the major food item of all size classes larval/juvenile fishes. of A. mitchilli (Table 1), although pre­ Spatial comparison of anchovy feed­ dation upon copepods decreased steadily ing indicated specialization on calanoid with growth of anchovies. Although copepods in most areas of the estuary only one sample of 10-19 mm anchovies (Table 2). Anchovies collected near the Published by The Aquila Digital Community, 1978 3 Gulf of Mexico Science, Vol.
Load more

Recommended publications
  • Species Anchoa Analis (Miller, 1945)
    FAMILY Engraulidae Gill, 1861 - anchovies [=Engraulinae, Stolephoriformes, Coilianini, Anchoviinae, Setipinninae, Cetengraulidi] GENUS Amazonsprattus Roberts, 1984 - pygmy anchovies Species Amazonsprattus scintilla Roberts, 1984 - Rio Negro pygmy anchovy GENUS Anchoa Jordan & Evermann, 1927 - anchovies [=Anchovietta] Species Anchoa analis (Miller, 1945) - longfin Pacific anchovy Species Anchoa argentivittata (Regan, 1904) - silverstripe anchovy, Regan's anchovy [=arenicola] Species Anchoa belizensis (Thomerson & Greenfield, 1975) - Belize anchovy Species Anchoa cayorum (Fowler, 1906) - Key anchovy Species Anchoa chamensis Hildebrand, 1943 - Chame Point anchovy Species Anchoa choerostoma (Goode, 1874) - Bermuda anchovy Species Anchoa colonensis Hildebrand, 1943 - narrow-striped anchovy Species Anchoa compressa (Girard, 1858) - deepbody anchovy Species Anchoa cubana (Poey, 1868) - Cuban anchovy [=astilbe] Species Anchoa curta (Jordan & Gilbert, 1882) - short anchovy Species Anchoa delicatissima (Girard, 1854) - slough anchovy Species Anchoa eigenmannia (Meek & Hildebrand, 1923) - Eigenmann's anchovy Species Anchoa exigua (Jordan & Gilbert, 1882) - slender anchovy [=tropica] Species Anchoa filifera (Fowler, 1915) - longfinger anchovy [=howelli, longipinna] Species Anchoa helleri (Hubbs, 1921) - Heller's anchovy Species Anchoa hepsetus (Linnaeus, 1758) - broad-striped anchovy [=brownii, epsetus, ginsburgi, perthecatus] Species Anchoa ischana (Jordan & Gilbert, 1882) - slender anchovy Species Anchoa januaria (Steindachner, 1879) - Rio anchovy
    [Show full text]
  • Mid-Atlantic Forage Species ID Guide
    Mid-Atlantic Forage Species Identification Guide Forage Species Identification Guide Basic Morphology Dorsal fin Lateral line Caudal fin This guide provides descriptions and These species are subject to the codes for the forage species that vessels combined 1,700-pound trip limit: Opercle and dealers are required to report under Operculum • Anchovies the Mid-Atlantic Council’s Unmanaged Forage Omnibus Amendment. Find out • Argentines/Smelt Herring more about the amendment at: • Greeneyes Pectoral fin www.mafmc.org/forage. • Halfbeaks Pelvic fin Anal fin Caudal peduncle All federally permitted vessels fishing • Lanternfishes in the Mid-Atlantic Forage Species Dorsal Right (lateral) side Management Unit and dealers are • Round Herring required to report catch and landings of • Scaled Sardine the forage species listed to the right. All species listed in this guide are subject • Atlantic Thread Herring Anterior Posterior to the 1,700-pound trip limit unless • Spanish Sardine stated otherwise. • Pearlsides/Deepsea Hatchetfish • Sand Lances Left (lateral) side Ventral • Silversides • Cusk-eels Using the Guide • Atlantic Saury • Use the images and descriptions to identify species. • Unclassified Mollusks (Unmanaged Squids, Pteropods) • Report catch and sale of these species using the VTR code (red bubble) for • Other Crustaceans/Shellfish logbooks, or the common name (dark (Copepods, Krill, Amphipods) blue bubble) for dealer reports. 2 These species are subject to the combined 1,700-pound trip limit: • Anchovies • Argentines/Smelt Herring •
    [Show full text]
  • NC-Anchovy-And-Identification-Key
    Anchovy (Family Engraulidae) Diversity in North Carolina By the NCFishes.com Team Engraulidae is a small family comprising six species in North Carolina (Table 1). Their common name, anchovy, is possibly from the Spanish word anchova, but the term’s ultimate origin is unclear (https://en.wiktionary.org/wiki/anchovy, accessed December 18, 2020). North Carolina’s anchovies range in size from about 100 mm Total Length for Bay Anchovy and Cuban Anchovy to about 150 mm Total Length for Striped Anchovy (Munroe and Nizinski 2002). Table 1. Species of anchovies found in or along the coast of North Carolina. Scientific Name/ Scientific Name/ American Fisheries Society Accepted Common Name American Fisheries Society Accepted Common Name Engraulis eurystole - Silver Anchovy Anchoa mitchilli - Bay Anchovy Anchoa hepsetus - Striped Anchovy Anchoa cubana - Cuban Anchovy Anchoa lyolepis - Dusky Anchovy Anchoviella perfasciata - Flat Anchovy We are not aware of any other common names applied to this family, except for calling all of them anchovies. But as we have learned, each species has its own scientific (Latin) name which actually means something (please refer to The Meanings of the Scientific Names of Anchovies, page 9) along with an American Fisheries Society-accepted common name (Table 1; Page et al. 2013). Anchovies from large schools of fishes that feed on zooplankton. In North Carolina they may be found in all coastal basins, nearshore, and offshore (Tracy et al. 2020; NCFishes.com [Please note: Tracy et al. (2020) may be downloaded for free at: https://trace.tennessee.edu/sfcproceedings/vol1/iss60/1.] All species are found in saltwater environments (Maps 1-6), but Bay Anchovy is a seasonal freshwater inhabitant in our coastal rivers as far upstream as near Lock and Dam No.
    [Show full text]
  • Anchoa Mitchilli) Eggs and Larvae in Chesapeake Bay ) E.W
    Estuarine, Coastal and Shelf Science 60 (2004) 409e429 www.elsevier.com/locate/ECSS Distribution and transport of bay anchovy (Anchoa mitchilli) eggs and larvae in Chesapeake Bay ) E.W. North , E.D. Houde1 University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, USA Received 28 February 2003; accepted 8 January 2004 Abstract Mechanisms and processes that influence small-scale depth distribution and dispersal of bay anchovy (Anchoa mitchilli) early-life stages are linked to physical and biological conditions and to larval developmental stage. A combination of fixed-station sampling, an axial abundance survey, and environmental monitoring data was used to determine how wind, currents, time of day, physics, developmental stage, and prey and predator abundances interacted to affect the distribution and potential transport of eggs and larvae. Wind-forced circulation patterns altered the depth-specific physical conditions at a fixed station and significantly influenced organism distributions and potential transport. The pycnocline was an important physical feature that structured the depth distribution of the planktonic community: most bay anchovy early-life stages (77%), ctenophores (72%), copepod nauplii (O76%), and Acartia tonsa copepodites (69%) occurred above it. In contrast, 90% of sciaenid eggs, tentatively weakfish (Cynoscion regalis), were found below the pycnocline in waters where dissolved oxygen concentrations were !2.0 mg lÿ1. The dayenight cycle also influenced organism abundances and distributions. Observed diel periodicity in concentrations of bay anchovy and sciaenid eggs, and of bay anchovy larvae O6 mm, probably were consequences of nighttime spawning (eggs) and net evasion during the day (larvae). Diel periodicity in bay anchovy swimbladder inflation also was observed, indicating that larvae apparently migrate to surface waters at dusk to fill their swimbladders.
    [Show full text]
  • Hotspots, Extinction Risk and Conservation Priorities of Greater Caribbean and Gulf of Mexico Marine Bony Shorefishes
    Old Dominion University ODU Digital Commons Biological Sciences Theses & Dissertations Biological Sciences Summer 2016 Hotspots, Extinction Risk and Conservation Priorities of Greater Caribbean and Gulf of Mexico Marine Bony Shorefishes Christi Linardich Old Dominion University, [email protected] Follow this and additional works at: https://digitalcommons.odu.edu/biology_etds Part of the Biodiversity Commons, Biology Commons, Environmental Health and Protection Commons, and the Marine Biology Commons Recommended Citation Linardich, Christi. "Hotspots, Extinction Risk and Conservation Priorities of Greater Caribbean and Gulf of Mexico Marine Bony Shorefishes" (2016). Master of Science (MS), Thesis, Biological Sciences, Old Dominion University, DOI: 10.25777/hydh-jp82 https://digitalcommons.odu.edu/biology_etds/13 This Thesis is brought to you for free and open access by the Biological Sciences at ODU Digital Commons. It has been accepted for inclusion in Biological Sciences Theses & Dissertations by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. HOTSPOTS, EXTINCTION RISK AND CONSERVATION PRIORITIES OF GREATER CARIBBEAN AND GULF OF MEXICO MARINE BONY SHOREFISHES by Christi Linardich B.A. December 2006, Florida Gulf Coast University A Thesis Submitted to the Faculty of Old Dominion University in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE BIOLOGY OLD DOMINION UNIVERSITY August 2016 Approved by: Kent E. Carpenter (Advisor) Beth Polidoro (Member) Holly Gaff (Member) ABSTRACT HOTSPOTS, EXTINCTION RISK AND CONSERVATION PRIORITIES OF GREATER CARIBBEAN AND GULF OF MEXICO MARINE BONY SHOREFISHES Christi Linardich Old Dominion University, 2016 Advisor: Dr. Kent E. Carpenter Understanding the status of species is important for allocation of resources to redress biodiversity loss.
    [Show full text]
  • Chesapeake Bay Species Habitat Literature Review
    Chesapeake Bay Species Habitat Literature Review December 31, 2015 Bob Murphy Sam Stribling 1 Table of Contents Atlantic Silverside (Menidia menidia)……………………………………………...……. 3 Bay Anchovy (Anchoa mitchilli)………………………………………………..……….. 5 Black Sea Bass (Cenropristis striata)……………………………………………...…….. 8 Chain Pickerel (Esox niger)………………………………………………………..…… 11 Eastern Elliptio (Elliptio complanata)…………………………………………..…….... 13 Eastern Floater (Pyganodon cataracta) ………………………………………............... 15 Largemouth Bass (Micropterus salmoides)………………………………….............…. 17 Macoma (Macoma balthica)……………………………………………………...…..… 19 Potomac Sculpin (Cottus Girardi)…………………………………………………...…. 21 Selected Anodontine Species: Dwarf Wedgemussel (Alasmidonta heterodon), Green Floater (Lasmigona subviridis), and Brook Floater (Alasmidonia varicosa)…..... 23 Smallmouth Bass (Micropterus dolomieu)………………………………………...…… 25 Spot (Leiostomus xanthurus)…………………………………………………………… 27 Summer Flounder (Paralichthys dentatus)…………………………………………...… 30 White Perch (Morone Americana)……………………………………………………… 33 Purpose: The Sustainable Fisheries Goal Implementation Team (Fisheries GIT) of the Chesapeake Bay Program was allocated Tetra Tech (Tt) time to support Management Strategies under the 2014 Chesapeake Bay Program (CBP) Agreement. The Fish Habitat Action Team under the Fisheries GIT requested Tt develop a detailed literature review for lesser- studied species across the Chesapeake Bay. Fish and shellfish in the Chesapeake Bay and its watershed rely on a variety of important habitats throughout
    [Show full text]
  • Teleostei, Clupeiformes)
    Old Dominion University ODU Digital Commons Biological Sciences Theses & Dissertations Biological Sciences Fall 2019 Global Conservation Status and Threat Patterns of the World’s Most Prominent Forage Fishes (Teleostei, Clupeiformes) Tiffany L. Birge Old Dominion University, [email protected] Follow this and additional works at: https://digitalcommons.odu.edu/biology_etds Part of the Biodiversity Commons, Biology Commons, Ecology and Evolutionary Biology Commons, and the Natural Resources and Conservation Commons Recommended Citation Birge, Tiffany L.. "Global Conservation Status and Threat Patterns of the World’s Most Prominent Forage Fishes (Teleostei, Clupeiformes)" (2019). Master of Science (MS), Thesis, Biological Sciences, Old Dominion University, DOI: 10.25777/8m64-bg07 https://digitalcommons.odu.edu/biology_etds/109 This Thesis is brought to you for free and open access by the Biological Sciences at ODU Digital Commons. It has been accepted for inclusion in Biological Sciences Theses & Dissertations by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. GLOBAL CONSERVATION STATUS AND THREAT PATTERNS OF THE WORLD’S MOST PROMINENT FORAGE FISHES (TELEOSTEI, CLUPEIFORMES) by Tiffany L. Birge A.S. May 2014, Tidewater Community College B.S. May 2016, Old Dominion University A Thesis Submitted to the Faculty of Old Dominion University in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE BIOLOGY OLD DOMINION UNIVERSITY December 2019 Approved by: Kent E. Carpenter (Advisor) Sara Maxwell (Member) Thomas Munroe (Member) ABSTRACT GLOBAL CONSERVATION STATUS AND THREAT PATTERNS OF THE WORLD’S MOST PROMINENT FORAGE FISHES (TELEOSTEI, CLUPEIFORMES) Tiffany L. Birge Old Dominion University, 2019 Advisor: Dr. Kent E.
    [Show full text]
  • Species Habitat Matrix
    Study reference Fish/shellfish Habitat Requirements Threat/Stressor Fish/Habitat species Response Type DO Temp Salinity Direct Indirect Species 1 – Elliptio complanata Bogan and Proch Eastern elliptio Permanent 1997, Cummings body of and Cordeiro 2011, water: large Strayer 1993; rivers, small USACE 2013 streams, canals, reservoirs, lakes, ponds Harbold et al. Eastern elliptio Presence of Environmental Diminished 2014; LaRouche fish host stressors on fish reproductive 2014; Lellis et al. species species, success; local 2013; Watters (American eel migratory extirpation 1996 [Anguilla blockages rostrata], Brook trout [Salvelinus fontinalis], Lake trout [S. namaycush], Slimy sculpin [Cottus cognatus], and Mottled sculpin [C. bairdii]) Sparks and Strayer Eastern elliptio Rivers Interstitial Reduced Behavioral stress 1998 (juveniles) DO > 2-4 dissolved responses mg/L oxygen caused (surfacing, gaping, by extending siphons sedimentation, and foot), increased Study reference Fish/shellfish Habitat Requirements Threat/Stressor Fish/Habitat species Response Type DO Temp Salinity Direct Indirect nutrient exposure to loading, organic predation inputs, or high temperatures Gelinas et al. 2014 Eastern elliptio Freshwater Harmful algal Compromised blooms, algal immune system, toxins reduced fitness Ashton 2009 Eastern elliptio Multiple 20-24°C Land cover Decreased environment conversion in frequency of al variables upstream observation, lower (pH, mean drainage area, numbers of daily water elevated individuals temperature, nutrients, conductivity, acidification,
    [Show full text]
  • Anchoa Trinitatis (Fowler, 1915) EAK Frequent Synonyms / Misidentifications: None / None
    click for previous page Clupeiformes: Engraulidae 781 Anchoa trinitatis (Fowler, 1915) EAK Frequent synonyms / misidentifications: None / None. FAO names: En - Trinidad anchovy; Fr - Anchois machète; Sp - Anchoa machete. Diagnostic characters: Body fusiform, strongly compressed. Snout pointed; posterior tip of maxilla pointed, reaching beyond anterior margin of preoperculum, almost to gill opening; jaw teeth small. Pseudobranch shorter than eye. Lower gill rakers 13 to 21;gill cover canals of panamensis-type.Dorsal-fin origin slightly nearer to posterior margin of eye than to caudal-fin base; anal fin with 26 to 30 branched rays, its origin about at vertical through midpoint of dorsal-fin base. Anus advanced, opening nearer to pel- vic-fin tips than to anal-fin origin. Colour: dorsum blue-green, with distinct and fairly broad midlateral silver stripe; fins hyaline, but dark pigmentation at bases of anal and caudal fins. Size: Maximum 14 cm total length, commonly to 12 cm total length. Habitat, biology, and fisheries: Shallow coastal waters, especially abundant in man- grove-lined lagoons. Sometimes captured very close to the bottom over soft sediments. Often forms large schools. Caught with seine nets. Marketed fresh, but mainly used as bait. No spe- cial fishery; not very suitable as a foodfish be- cause of its strongly compressed body.Separate statistics are not reported for this species. Distribution: Northern coasts of Colombia and Venezuela, and Trinidad. 782 Bony Fishes Anchovia clupeoides (Swainson, 1839) AHU Frequent synonyms / misidentifications: Engraulis productus Poey, 1866; Anchovia nigra Schultz, 1949 / None. FAO names: En - Zabaleta anchovy; Fr - Anchois hachude; Sp - Anchoa bocona. Diagnostic characters: Body fusiform, fairly compressed.
    [Show full text]
  • Coilia Dussumieri Valenciennes, 1848 at Ye River Estuary, Southern Mon Coastal Water
    Journal of Aquaculture & Marine Biology Research Article Open Access Early life distribution of gold spotted grenadier anchovy Coilia dussumieri valenciennes, 1848 at ye river estuary, southern mon coastal water Abstract Volume 7 Issue 2 - 2018 The pattern of the use of the Ye River Estuary, euryhaline area in southern Mon coastal water, by Coilia dussumieri was investigated to assess spawning period, recruitment and Naung Naung Oo to detect spatial-temporal patterns of this major fishery resource. Fishes were sampled Department of Marine Science, Mawlamyine University, by seine nets, from early premonsoon, 2013 to postmonsoon, 2014 and by beach seine, Myanmar from premonsoon, 2013 to postmonsoon, 2015. Reproductive season, measured in terms of GSI, gonad development and appearance of recruits, indicate that reproduction occurs Correspondence: Naung Naung Oo, Assistant Lecturer, Department of Marine Science, Mawlamyine University, from August to March, when they reach the best condition. Recruitment peaks in post and Myanmar, Email [email protected] pre-monsoon at sandy beaches where they stay until early monsoon, moving toward deeper estuary areas during late monsoon. After that, they join adults and perform movements Received: March 24, 2018 | Published: April 25, 2018 between the estuary and the adjacent continental shelf to reproduce. Keywords: anchovies, condition, Engraulidae, recruitment, reproduction Introduction spawning period was related to the juvenile recruitment at sandy beaches, 3) to know the early life stages were assessed to detect Fishes of the Engraulidae family, known as anchovies, are widely eventual spatial-temporal pattern, and 4) to examine the length 1 distributed in tropical and sub-tropical waters. Most anchovies frequency distribution of C.
    [Show full text]
  • Master List of Fishes
    FISHES OF THE FRESHWATER POTOMAC Compiled by Jim Cummins, The Interstate Commission on the Potomac River Basin Always DRAFT - Version 02/21/2013 The following list of one-hundred and eighteen fish species known to be present in the freshwater portions of the Potomac River basin. Included, but not numbered, are fish that once were in the Potomac but are no longer are present; eight extirpated fish species (only one of which, the log perch, was perhaps a native to the Potomac) and three with uncertain presences. The list was originally (1995) compiled through a combination of personal field experience, a search of the literature, and input from regional fisheries biologists Ed Enamait (MD), Gerald Lewis (WV), Ed Stienkoenig (VA), and Jon Siemiens (DC). However, I attempt to keep the list updated when new information becomes available, thus the list is always draft. The distribution of these fishes within the Potomac is highly variable. Many are year-round residents and are fairly wide-spread, while some, such as the torrent shiner, are only found in very limited habitats/areas. Eleven are migratory species which typically come into the river system to spawn, and nine represent occasional visitors in freshwater-tidal areas. The native or introduced status of most of these species are generally accepted, but for some species this status is an object of continued researched and therefore caution should be used in interpreting this designation, especially when noted with a “?” mark. Of the 118 species currently found in the river, approximately 80 (68%) are considered native, 23 (19%) are considered introduced, and the rest (15, or 13%) are uncertain in origin.
    [Show full text]
  • The Living Planet Index (Lpi) for Migratory Freshwater Fish Technical Report
    THE LIVING PLANET INDEX (LPI) FOR MIGRATORY FRESHWATER FISH LIVING PLANET INDEX TECHNICAL1 REPORT LIVING PLANET INDEXTECHNICAL REPORT ACKNOWLEDGEMENTS We are very grateful to a number of individuals and organisations who have worked with the LPD and/or shared their data. A full list of all partners and collaborators can be found on the LPI website. 2 INDEX TABLE OF CONTENTS Stefanie Deinet1, Kate Scott-Gatty1, Hannah Rotton1, PREFERRED CITATION 2 1 1 Deinet, S., Scott-Gatty, K., Rotton, H., Twardek, W. M., William M. Twardek , Valentina Marconi , Louise McRae , 5 GLOSSARY Lee J. Baumgartner3, Kerry Brink4, Julie E. Claussen5, Marconi, V., McRae, L., Baumgartner, L. J., Brink, K., Steven J. Cooke2, William Darwall6, Britas Klemens Claussen, J. E., Cooke, S. J., Darwall, W., Eriksson, B. K., Garcia Eriksson7, Carlos Garcia de Leaniz8, Zeb Hogan9, Joshua de Leaniz, C., Hogan, Z., Royte, J., Silva, L. G. M., Thieme, 6 SUMMARY 10 11, 12 13 M. L., Tickner, D., Waldman, J., Wanningen, H., Weyl, O. L. Royte , Luiz G. M. Silva , Michele L. Thieme , David Tickner14, John Waldman15, 16, Herman Wanningen4, Olaf F., Berkhuysen, A. (2020) The Living Planet Index (LPI) for 8 INTRODUCTION L. F. Weyl17, 18 , and Arjan Berkhuysen4 migratory freshwater fish - Technical Report. World Fish Migration Foundation, The Netherlands. 1 Indicators & Assessments Unit, Institute of Zoology, Zoological Society 11 RESULTS AND DISCUSSION of London, United Kingdom Edited by Mark van Heukelum 11 Data set 2 Fish Ecology and Conservation Physiology Laboratory, Department of Design Shapeshifter.nl Biology and Institute of Environmental Science, Carleton University, Drawings Jeroen Helmer 12 Global trend Ottawa, ON, Canada 15 Tropical and temperate zones 3 Institute for Land, Water and Society, Charles Sturt University, Albury, Photography We gratefully acknowledge all of the 17 Regions New South Wales, Australia photographers who gave us permission 20 Migration categories 4 World Fish Migration Foundation, The Netherlands to use their photographic material.
    [Show full text]