DOCSLIB.ORG

Entrainment of the Circadian Rhythm of Food Demand by Infradian Cycles of Light-Dark Alternation in Hoplosternum Littorale (Teleostei) Thierry Boujard, Y

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Entrainment of the Circadian Rhythm of Food Demand by Infradian Cycles of Light-Dark Alternation in Hoplosternum Littorale (Teleostei) Thierry Boujard, Y Entrainment of the circadian rhythm of food demand by infradian cycles of light-dark alternation in Hoplosternum littorale (Teleostei) Thierry Boujard, Y. Moreau, P. Luquet To cite this version: Thierry Boujard, Y. Moreau, P. Luquet. Entrainment of the circadian rhythm of food demand by infradian cycles of light-dark alternation in Hoplosternum littorale (Teleostei). Aquatic Living Re- sources, EDP Sciences, 1991, 4, pp.221-225. hal-02714622 HAL Id: hal-02714622 https://hal.inrae.fr/hal-02714622 Submitted on 1 Jun 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Aquaf. Liring Rrsour., 1991, 4, 221-225 Entrainment of the circadian rhythm of food demand by infradian cycles of light-dark alternation in Hoplosternum littorale (Teleostei) Thierry Roujard ('), Yanri Morcau arid Pierre Luyuct I,VRA, Hydrubiulugie, HI' 70y, 97.787 X"OUIOII Cedex, 1;rance. Rrceikrd April r y, I!)~)I; acccptcd July r, 1991. "' Prcscnt addrcss: I,VRL4 Hydrubioloçie, RP3, 64310 Aicain, fiarup. Boujard T., Y. Morcau, P. Luquct. Aquat. Liring Re.~our.,1991, 4, 221-225. Abstract Hoplosterum littorale (Hancock, 1828) shows a markcd circadian rhythm of food demand. Feeding activity is mainly nocturnal, with two pcaks, and is synchronized with the diel light cycle. We tested the cffect of infradian (period >28 h) lightldark cycles on this rhythm in fish wilh dcmand-fccdcrs: fish subjected to a 13.5 L122.5 D lightldark cycle for 8 days and a 25.5L/10.5D cycle for a further 8 days showed a strictly nocturnal fccding activity, a response that only passively reflected the cyclic altcrnation of light and dark. Keywords : Siluriform, diel cycle, fccding rhythms. Synchronisation du rythme circudien d'auto-distribution d'aliments par des cycles infrudiens d'kcluirugr chez Hoplostcrnum littorale (Teleostei). Résumé Hoplosternurn littorulc (Hancock, 1828) préscntc un rythme circadien marqué d'auto-distribution de nourriture. Ce rythme, à acrophase nocturne, se caractérise par deux pics, il est synchronisé par l'alternance jourInuit de la lumière. Nous avons mis à l'épreuve Ic caractère circadien (24&4h) de ce rythme à l'aide de distributeurs d'aliments «A la demande)). Les poissons soumis à un éclairage simulant la photopériode naturelle (13.5 5110.5 N) ont un rythme circadien d'auto-distribution d'ali- ments. Lorsqu'ils sont sujets à un cycle d'éclairage infradien (période >28 h) à longue scotophase (13.5 5122.5 N) durant Sjours, puis à longue photophasc (25.5 J/10.5N) durant 8 autres jours, ils ont un cycle d'auto-distribution d'aliments qui est entraîné sans délai par les changements successifs de cycles d'éclairage, et se nourrissent exclusivement durant les scotophases. Mots-clés : Siluriforme, rythmes circadicns, cyclcs nycthéméraux, alimentation. INTRODUCTION alternation of day and night, or dawn, or dusk) or temperature (Randolph and Clemens, 1976). It may A circadian rhythm (24f 4 hrs.) is characterized by be endogenous, i. e., persisting with its own period in its amplitude, mean value (or Mesor) and acrophase constant environmental conditions, or exogenous if it (Gwinner, 1986; Halberg et al., 1977; Koukkari etul., only passively reflects the cyclic fluctuations of the 1987). It is generally synchronized by photoperiod (or environment. Circadian rhythms have been demon- Aquat. Living Resour. 91/04 221 05 $ 2.5010 IFREMER-Gauthier-Villars T. Roujard et al. strated in a varicty of eukaryotes, with most applica- thereafter changcd to a 36hrs. light cycle with a tions in thc field of chronopharmacology. Spieler longcr scotophase for a period of 8 days from the 30th (1977), and later Parker (1984), suggested that such of January 1990 (13.5 L122.5 D), and subscquently to rhythms could be uscd to improve production cffici- a cycle of 36 hrs. with a longer photophase for another ency in aquaculture. period of 8 days, from the 7th of Fcbruary 1990 The feeding pcriods of fish living in natural (25.5 Ll10.5 D). environmcnts follow a marked dicl cycle (Elliott, Each tank was fittcd with a metal rod which closcd 1973; Müller, 1978; Jacob and Nair, 1983; Sagar and a 12V circuit whcn a fish moved the rod. A 220V Glova, 1988; Walsh et al., 1988). In artificial rcaring feedcr dclivcred 1 g of food via a rclay. This devicc conditions, and with the exception of Rozin and was coupled to a computcr, which recorded the hour, Mayer (1961) who found no circadian rhythm in date and tank numbcr of each demand for food. In the fccding activity of Curu.s.~iu.suurutu.s, most other order to rcstrict unintentional triggering of the feeder authors report strong circadian patterns of feeding in by thc fish, the rod was located 2cm below the water fish (Hoar, 1942; Adron etul., 1973; Hirata, 1973; surface, i.e., far from the usual zone of activity of Landless, 1976; Grove et al., 1978; Eriksson and Van this bottom dweller fish. Furthermorc, thc thank Veen, 1980; Boujard etul., 1990). Lightldark alterna- design was such that unconsumed food pellets were tion is generally thought to bc the main synchronizcr constantly drained from the thanks with the water (Gibson and Keenleysidc, 1966; Chaston, 1968; Man- ovcrflow. WC therefore know that the consumption teifel etal.. 1978; Müller, 1978; Molina Borja etul., of food could take place only within a few minutes 1990), and in CU~USS~U.~au ru tu.^, feeding rhythm is after demand-feeding. Operators entered thc cxpcr- free-running for at least 5 days (Spiclcr and Clough- imental room only cvcry 3-4 days and hcncc the fish crty, 1989). Meal times also affcct growth rates (Otta- werc disturbcd very little during the cxpcriment. way, 1978; Greenland and Gill, 1979; Nocskc et ul., 1981; Sundararaj ctul., 1982; Noeskc and Spieler, 1984; Nocske-Hallin etul., 1985), and can act as a synchronizer for several bchavioural parametcrs RESULTS (Weber and Spieler, 1987; Spieler and Cloughcrty, 1989) and for a large number of circulating hormones (Leatherland et ul., 1974; Spieler, 1977; Spieler et al., The timing of food dcmand during the threc consc- 1977; Eales et al., 1981; Spiclcr and Noeske, 1981, cutive periods with different light cycles, from the 1984; Perez etal., 1988). 22nd January to the end of the experimcnt, is shown in .figure 1. Regardless of the lighting cycle, self-feed- On the basis of thcsc observations, and with thc ing always took place throughout the phase of dark- aim of improving thc production of Hoplo.sternum ness and was infrequcnt during the light phases. littorale, a siluriform fish of economic intcrcst for French Guiana (Boujard etul., 1988), the circadian Figure2 shows the distribution of food dcmand rhythm of food intake in this species was described during the scotophases for each of thc three condi- using demand-feedcrs chccked every 3 hours (Roujard tions. When the lighting cyclc simulated the natural et al., 1990): food demand, synchronized by day-night photoperiod, food dcmand followed the same timing shifts, was characterized by a nocturnal acrophase. as that obscrved by Boujard etul., (1990), i.e., a Using the same device as in thc previous experiment, significantly bimodal feeding activity (p<O.OS; sign- but with automatic recording of the self-distributed test) with a "dusk" peak and a second phase of self- food, we tested the effect of infradian (period feeding during thc sccond part of the scotophase. >28 hrs.) lightldark cycles on this rhythm. When the fish wcrc subjected to a 36hrs. cyclc of lighting with a longer scotophase, self-fccding rcmai- ned constant throughout the nocturnal pcriod. During 36 hrs. cycles of lighting with longcr photophases, the MATERIAI, AND METHODS "dusk" peak of feeding activity was again marked. The amount of sclf-distributed food per hour varied Four groups of 10 IIoplosternum littorule that had during thc scotophases of each situation. It was very been hatched in the laboratory and reared in ponds high when the phase of light was prolonged and (mean weight 49 g) in Frcnch Guiana at the Socou- low with a longer phase of darkness. However, these mou Farm (5"N,52"30fW)were distributed into 200-1 differences werc not significant (p< 0.05; sign-tcst) tanks, on the 18th of January 1990. The tanks were because thc bctween-group variability was vcry high. continuously supplied with recyclcd water (temperat- Neverthcless, it can be interprctcd as the expression ure 28f 2"C, oxygen at saturation) and held in a of a compensation maintaining the 24 h-consumption light-tight room with artificial lighting provided by (ranging between 3.4 and 4.0% of live weight) at a four 50 watt ncon tubcs controlled by an clcctric constant level (tahlc 1). Similarly, the dusk peak of timer. For a period of 12 days, the fish werc subjectcd self-feeding obscrvcd after the long photophases to a 24hrs. light cycle that simulatcd the natural might be thc consequence of the long fasting observed photopcriod (13.5 L110.5 D). The light cycle was during thc light periods. Aquat. Living Resour. Feeding rhythm in Hoplosternum littorale 30101 31/01 O1 /O2 OU02 03/02 04/02 05/02 ma rml no data --- *- Li 4 - - mie; 07/02 08/02- 09/02 -10102 11/02 12/02 13/02 14/02 1 Ft IT u 10 ' -LL -m,m I 4 - no data - - O 05 115 2 25 3 35 4 45 5 55 6 55 7 75 8 Time (days) Figure 1.
Load more

Recommended publications
  • Research Article Restoration Effects of the Riparian Forest on the Intertidal Fish Fauna in an Urban Area of the Amazon River
    Hindawi Publishing Corporation e Scientific World Journal Volume 2016, Article ID 2810136, 9 pages http://dx.doi.org/10.1155/2016/2810136 Research Article Restoration Effects of the Riparian Forest on the Intertidal Fish Fauna in an Urban Area of the Amazon River Júlio C. Sá-Oliveira,1 Stephen F. Ferrari,2 Huann C. G. Vasconcelos,3 Raimundo N. G. Mendes-Junior,4 Andrea S. Araújo,5 Carlos Eduardo Costa-Campos,6 Walace S. Nascimento,1 and Victoria J. Isaac7 1 Ichthyology and Limnology Laboratory, Universidade Federal do Amapa-NEPA´ (UNIFAP-NEPA), Rodovia JK, km 02, 68.903-419 Macapa,´ AP, Brazil 2Department of Ecology, Universidade Federal de Sergipe (UFS), Sao˜ Cristov´ ao,˜ SE, Brazil 3Ichthyology and Limnology Laboratory, Universidade Federal do Amapa´ (UNIFAP), Rodovia JK, km 02, 68.903-419 Macapa,´ AP, Brazil 4Cajari River Extractive Reserve, Instituto Chico Mendes de Conservac¸ao˜ da Biodiversidade (ICMBio), Rua Leopoldo Machado, 1126 Centro, Macapa,´ AP, Brazil 5Zoology Laboratory, Universidade Federal do Amapa´ (UNIFAP), Rodovia JK, km 02, 68.903-419 Macapa,´ AP, Brazil 6Herpetology Laboratory, Universidade Federal do Amapa´ (UNIFAP), Rodovia JK, km 02, 68.903-419 Macapa,´ AP, Brazil 7Fishery Biology Laboratory, ICB, Universidade Federal do Para´ (UFPA), Av. Perimetral 2651, Guama,´ 66077530 Belem,´ PA, Brazil Correspondence should be addressed to Julio´ C. Sa-Oliveira;´ [email protected] Received 12 June 2016; Accepted 8 August 2016 Academic Editor: Regis Cereghino Copyright © 2016 Julio´ C. Sa-Oliveira´ et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    [Show full text]
  • Siluriformes: Callichthyidae) in the Subterranean Domain of Northern and Northeastern Brazil
    13 4 297 Tencatt et al NOTES ON GEOGRAPHIC DISTRIBUTION Check List 13 (4): 297–303 https://doi.org/10.15560/13.4.297 First report of armored catfishes Callichthyinae Bonaparte, 1838 (Siluriformes: Callichthyidae) in the subterranean domain of northern and northeastern Brazil Luiz Fernando Caserta Tencatt,1 Bruno Ferreira dos Santos,2 Maria Elina Bichuette3 1 Universidade Estadual de Maringá, Coleção Ictiológica do Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura e Programa de Pós- Graduação em Ecologia de Ambientes Aquáticos Continentais, Av. Colombo, 5790, 87020-900 Maringá, Paraná, Brazil. 2 Universidade Federal de Mato Grosso do Sul, Programa de Pós-Graduação em Biologia Animal, Av. Costa e Silva, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil. 3 Universidade Federal de São Carlos, Departamento de Ecologia e Biologia Evolutiva, Laboratório de Estudos Subterrâneos, Rodovia Washington Luis, km 235, 13565-905 São Carlos, São Paulo, Brazil. Corresponding author: Luiz Fernando Caserta Tencatt, [email protected] Abstract The first occurrence of the armored catfishes of the subfamily Callichthynae is reported in subterranean water bodies of northern and northeastern Brazil. The records include 3 species, each occurring in 1 of the 3 caves in the central and northeastern regions of Brazil: Callichthys callichthys from Casa do Caboclo cave, Sergipe state; Hoplosternum lit- torale from the Gruna da Lagoa do Meio, Bahia state; and Megalechis thoracata, from Casa de Pedra cave, Tocantins state. Keywords Camboatá, cave, hypogean habitat, karstic areas, Neotropical region. Academic editor: Bárbara Calegari | Received 2 March 2017 | Accepted 10 June 2017 | Published 14 August 2017 Citation: Tencatt LFC, Ferreira dos Santos B, Bichuette ME (2017) First report of armored catfishes Callichthyinae( Bonaparte, 1838) (Siluriformes: Callichthyidae) in the subterranean domain.
    [Show full text]
  • Summary Report of Freshwater Nonindigenous Aquatic Species in U.S
    Summary Report of Freshwater Nonindigenous Aquatic Species in U.S. Fish and Wildlife Service Region 4—An Update April 2013 Prepared by: Pam L. Fuller, Amy J. Benson, and Matthew J. Cannister U.S. Geological Survey Southeast Ecological Science Center Gainesville, Florida Prepared for: U.S. Fish and Wildlife Service Southeast Region Atlanta, Georgia Cover Photos: Silver Carp, Hypophthalmichthys molitrix – Auburn University Giant Applesnail, Pomacea maculata – David Knott Straightedge Crayfish, Procambarus hayi – U.S. Forest Service i Table of Contents Table of Contents ...................................................................................................................................... ii List of Figures ............................................................................................................................................ v List of Tables ............................................................................................................................................ vi INTRODUCTION ............................................................................................................................................. 1 Overview of Region 4 Introductions Since 2000 ....................................................................................... 1 Format of Species Accounts ...................................................................................................................... 2 Explanation of Maps ................................................................................................................................
    [Show full text]
  • (Hoplosternum Littorale) on Starvation
    UTILIZATION OF THE PRINCIPAL NUTRIENTS FOR ROUTINE METABOLISM IN ATIPA (HOPLOSTERNUM LITTORALE) ON STARVATION P. LUQUET,* Y. MOREAU,* F. MEDALE** and S.J. KAUSHIK** CORE Metadata, citation and similar papers at core.ac.uk +INRA ORSTOM Laboratoire d'Hydrobiologie. BP 709. 97387, Kourou, French Guiana Provided by Horizon / Pleins textes Present address: CRO. BP VI& Abidjan 01, Ivory Coast **INRA Station d'Hydrobiologie. BP 3 Saint-Pét%ur-NiveN, 64310 Ascain. France ABSTRACT Atipa (Hoplosternum litrorale),a nopical fish from South America, was starved for 50 days. Changes in whole body composition (dry maner. proteins. amino acids. minerals, fats, and energy) were studied in order to assess the utilization of such nutrients for routine metabolism. The intensity of catabolism decreased with the duration of the fast. During the fmt 10 days the daily losses amounted to 0.55 g. 0.29 g. and 0.14 g. respectively for fresh body weight, dry matter, and proteins per 100 g initial body weight. During the following 40 days, daily losses were on average half of the previous values. There was remarkable conservation of certain nutrients including mineral and lipid reserves and amino acids. There were two very distinct phases in energy utilization. Lipids played an important role in energy supply during the first phase but. in the long ten. routine energy requirements are met mainly by protein mobilization. Hoplosternum littorale (vemacular French name: Atipa) is an armoured catfrsh of the family Callichtyidae, of wide distribution in marshes and flood plains of the northem part of South America. Although information is available on the behaviour of this species, data on its biology are very scarce (Sing, 1977; Machado-Allison, 1987; Winemiller, 1987; Gautier et al., 1988).
    [Show full text]
  • Dwarf Hoplo (Lepthoplosternum Pectorale) Ecological Risk Screening Summary
    Dwarf Hoplo (Lepthoplosternum pectorale) Ecological Risk Screening Summary U.S. Fish and Wildlife Service, July 2017 Revised, January 2018 Web Version, 5/16/2018 1 Native Range and Status in the United States Native Range From Froese and Pauly (2017): “South America: Paraguay River basin. [The basin includes the countries of Argentina, Brazil, Bolivia, Paraguay and Uruguay]” From Zarucki et al. (2010): “We report the presence of Leporinus lacustris, Lepthoplosternum pectorale, and Apistogramma borellii registered from the middle Paraná River (Casciotta et al. 2005) in the middle and lower Uruguay River [in Uruguay].” Status in the United States This catfish species has not been reported in the United States. There is no indication that this species is in trade in the U.S. 1 Means of Introductions in the United States Lepthoplosternum pectorale has not been reported as introduced in the United States. Remarks From ScotCat (2005): “One look at the photograph of this species and you will realise that this [i.e., Lepthoplosternum pectorale] is, or used to be, Hoplosternum pectorale. The above has been moved into a new genus along with Hoplosternum thoracatum ( now Megalechis thoracata) with Hoplosternum littorale staying put. The Brazilian ichthyologist Roberto E.Reis [sic] completely revised this family in 1996 and erected a new genus for pectorale.” 2 Biology and Ecology Taxonomic Hierarchy and Taxonomic Standing From ITIS (2017): “Kingdom Animalia Subkingdom Bilateria Infrakingdom Deuterostomia Phylum Chordata Subphylum Vertebrata Infraphylum
    [Show full text]
  • Hoplosternum Littorale
    ADVANCES IN TROPICAL A AOUACOP IFREMER Actes \ I ; 48 , The culture of Hoplosternum littorale : 7 state of the art and perspectives J P. LUQUET, T. BOUJARD, P. PLANQUEnE, Y. MOREAU and G. HOSTACHE Laboratoire d’Hydrobiologie. INRA. KOUROU. Guyane Française Abstract - Hoplosternum linorale is a siluriform fuh of very high commercial value in some countries of South America. Some biological characteristics as easy /-spawning in confinement and good tolerance of low oxygen level make it easy to / cultivate. I Aquatic oxygen uptake does not allow to sustain standard metabolism. so it is 1 considered as an obligated air breather. Routine metabolism and growth cannot be ! completed without air access. i A circadian rythm for feeding behaviour is observed. Most voluntary food intake \ occurs during the night. nte sunset is a directive factor even in case of time lag. So. a a night feeding schedule should be used in practise. x ”- L __ Spawning occurs during the rainy seasons in nests built by the male on the water sudace. The seasonal fecundity is very high with more than 2SOOO large size (1.4 mm in diameter) eggs for a hundred gram female. The larvae are quite large (6- 7 mm length) and can be reared in standing water on complete diet with a good survival rate (70 %) but poor growth. Newly hatched fvtransferred in ponds give a better growth - I2 g in one month - but with only few survivors. As initial rearing conditions seem to be determinant for sex ratio, promising perspectives are open for a high proportion of male, if not monosex.
    [Show full text]
  • Cichlasoma Bimaculatum) Ecological Risk Screening Summary
    Black Acara (Cichlasoma bimaculatum) Ecological Risk Screening Summary U.S. Fish & Wildlife Service, February 2011 Revised, August 2014 and January 2018 Web Version, 4/5/2018 Photo: Florida Fish and Wildlife Conservation Commission. Licensed under Creative Commons (CC BY-NC). Available: https://www.invasive.org/browse/detail.cfm?imgnum=5371466. (January 2018). 1 Native Range and Status in the United States Native Range From Froese and Pauly (2017): “South America: Orinoco River basin, in the Caroni […] River [in] Venezuela; Guianas, from the Essequibo River to the Sinnamary River; Amazon River basin, in the upper Branco River basin [Brazil].” 1 Status in the United States From Nico et al. (2018): “The species has been established in Florida since the early 1960s; it was first discovered in Broward County (Rivas 1965). The expanded geographic range of the species includes the counties of Broward (Courtenay et al. 1974; Courtenay and Hensley 1979a; museum specimens), Collier (Courtenay and Hensley 1979a; Courtenay et al. 1986; museum specimens), Glades (museum specimens), Hendry (Courtenay and Hensley 1979a; museum specimens), Highlands (Baber et al. 2002), Lee (Ceilley and Bortone 2000; Nico, unpublished), Martin (museum specimens), Miami-Dade (Kushlan 1972; Courtenay et al. 1974; Hogg 1976; Courtenay and Hensley 1979a; Loftus and Kushlan 1987; museum specimens), Monroe (Kushlan 1972; Courtenay et al. 1974; Courtenay and Hensley 1979a; Loftus and Kushlan 1987; museum specimens), Palm Beach (Courtenay et al. 1974; Courtenay and Hensley 1979a; museum specimens), Pasco (museum specimens), and Pinellas (museum specimens). It is established in Big Cypress National Preserve, Biscayne National Park, Everglades National Park (Kushlan 1972; Loftus and Kushlan 1987; Lorenz et al.
    [Show full text]
  • Checklist of Fish in Rice and Sugarcane Fields of the Everglades Agricultural Area
    Biological Sciences CHECKLIST OF FISH IN RICE AND SUGARCANE FIELDS OF THE EVERGLADES AGRICULTURAL AREA (1) (1) (2) ELISE PEARLSTINE ,WENDY M. BEAR ,FRANK J. MAZZOTTI , AND (3) KENNETH G. RICE (1)IFAS, University of Florida, Ft. Lauderdale Research and Education Center, 3205 College Ave., Davie, FL 33314 (2)Department of Wildlife Ecology, Ft. Lauderdale Research and Education Center, University of Florida, 3205 College Avenue, Davie, FL 33314 (3)U.S. Geological Survey, University of Florida Field Station, 3205 College Ave., Fort Lauderdale, FL 33314 ABSTRACT: We conducted three years of fish surveys in rice and sugarcane fields of the Everglades Agricultural Area. Canals and ditches, as well as rice fields, were included in the survey. We observed 22 species of fish, of which eight were non-native species. Eastern mosquitofish (Gambusia holbrooki) dominated the catch numerically (77%). Other small fishes made up most of the remainder, and included flagfish (Jordanella floridae) (5%), bluefin killifish (Lucania goodei) (2%), least killifish (Heterandria formosa)( 4%), and sailfin molly (Poecilia latipinna) (10%). Species composition of fish communities were similar to those found in other studies in south Florida in rice fields and in ditches and canals. While there were a number of non-native species caught they did not dominate the communities in numbers or species richness. Key Words: Fish checklist, fish, Everglades Agricultural Area, agriculture, Florida THE Everglades Agricultural Area (EAA) is a 280,000 ha area of farmlands in south Florida at the southern end of Lake Okeechobee. South Florida has been the site of many environmental studies in natural habitats of the Everglades system due to a major restoration effort currently underway.
    [Show full text]
  • G:\Common\GCFI\Gcfi 47Th Papers\New Folder\10 Souza
    POLYCULTURE TRIALS INVOLVING RED TILAPIA, ARMOURED CATFISH (Hoplosternum littorale) AND View metadata, citation and similar papersFRESHWATER at core.ac.uk PRAWN (Macrobrachium rosenbergii) IN brought to you by CORE EARTHEN PONDS IN TRINIDAD. provided by Aquatic Commons GREGORY DE SOUZA, PAUL W. GABBADON AND ADDISON S. TITUS Institute of Marine Affairs P.O. Box 3160, Carenage Post Office Trinidad and Tobago, West Indies ABSTRACT Polyculture trials were conducted under semi-intensive conditions in earthen ponds in Trinidad using the following combinations of species: (i) red hybrid tilapia and armoured catfish (Hoplosternum littorale); (ii) freshwater prawn (Macrobrachium rosenbergii) and armoured catfish; and (iii) tilapia and prawn. Stocking densities were: tilapia 25 000 ha-1; catfish 30 000 - 50 000 ha-1; and prawn 10 000 - 100 000 h-1. A 35% protein diet of pelleted ration in floating (for tilapia) and sinking (for catfish and prawn) forms were fed as a percentage of estimated biomass. Growout times approximated 5.5 months. Average maximum yields were as follows: tilapia and catfish 27 614 kg ha-1 yr-1; prawn and catfish 12 622 kg ha-1 yr-1; and tilapia and prawn 24 176 kg ha-1 yr-1. INTRODUCTION Aquaculture in Trinidad and Tobago started in the 1950's with the introduction of Sarotheradon mossambicus. Up to the 1980's, however, commercial aquaculture had not been successful and this was largely due to low management levels and backyard systems of culture. Generally, mixed-sex tilapia and some indigenous species were cultured in poorly designed ponds (Manwaring and Romano 1990), resulting in low and unpredictable yields.
    [Show full text]
  • Use of Otolith Microincrements for Estimating the Age and Growth of Young Armoured Catfish Hoplosterizunt Littorale J
    Journal of Fish Biology (2001) 58, 1274-1285 doi: 10.1006/jfbi.2000.1533, available online at http://www.idealibrary.com on IDE,kL@ Use of otolith microincrements for estimating the age and growth of young armoured catfish Hoplosterizunt littorale J. J. D. PON TON*^, H. MOL$AND PANFILIS TIRD, Universitè Montpellier II, UMR-CNRS 5556 Écosystèmes lagunaires, Case 093, 34095 Montpellier Cedex 05, France; 5University of Surinaine, CELOS, P, O. B. 9212, Paramaribo, Suriname and SIRD, LASAA, B. P. 70, 29280 Plouzanéj Frame (Received I7 June 2000, Accepted 30 November 2000) At 27.0-28.0" C, the lapilli of Hoplosterriuni littorale developed rapidly in the embryo between 35 and 21 h before hatching. At hatching, lapilli averaged 78 pm on their longest axis and 69 pm on their shortest axis, and had up to three faint narrow microstructures. Primordia were fused and the large core was surrounded by a conspicuous discontinuous zone, formed at hatching, and visible in both sagittal and transverse preparations. The deposition rate of microincrements, counted in transverse thin sections.of lapilli, was daily at least for the first 50 days and the innermost microincrements were deposited from hatching on. The growth rates of H. littorale differed significantly between two different rice field habitats in Suriname. Q 2001 The Fisheries Society of the British Isles Key words: otolith microstructures; daily deposition; juvenile; Siluriformes; Suriname; South America. INTRODUCTION Hoplosternum littorale (Hancock, 1828) is a medium-sized armoured catfish (family Callichthyidae), of maximal L, 20 cm (Singh, 1978), endemic to neotropical fresh waters (Mol, 1994; Reis, 1997).
    [Show full text]
  • Teleostei: Ostariophysi: Siluriformes)
    Neotropical Ichthyology, 5(3):337-350, 2007 Copyright © 2007 Sociedade Brasileira de Ictiologia Comparative analysis of spermiogenesis and sperm ultrastructure in Callich- thyidae (Teleostei: Ostariophysi: Siluriformes) Maria A. Spadella*, Claudio Oliveira**and Irani Quagio-Grassiotto** In Corydoradinae, the presence of spermatids in the lumen of the testicular tubules together with spermatozoa suggests that spermatogenesis is of the semicystic type, whereas in Callichthyinae, sperm production occurs entirely within spermatocysts in the germinal epithelium, characterizing cystic spermatogenesis. Spermiogenesis in Callichthyinae is characterized by an initial lateral development of the flagellum, the presence of nuclear rotation to different degrees, an eccentric or medial formation of a nuclear fossa, formation of a cytoplasmic channel, and presence of centriolar migration, being more similar to type I spermiogenesis. In Corydoradinae, spermiogenesis is characterized by eccentric development of the flagellum, the absence of nuclear rotation, an eccentric nuclear fossa formation, formation of a cytoplasmic channel, and absence of centriolar migration, differing from the types previously described. The process of spermatogenesis and spermiogenesis in Corydoradinae and Callichthyinae revealed unique characters for each of these subfamilies, corroborating the hypotheses that they constitute monophyletic groups. In relation to sperm ultrastructure, the comparative analysis of the callichthyid species shows that the general characteristics found
    [Show full text]
  • Hoplosternum Littorale) Ecological Risk Screening Summary
    Brown Hoplo (Hoplosternum littorale) Ecological Risk Screening Summary U.S. Fish & Wildlife Service, July 2019 Revised, July 2019 Web Version, 11/13/2019 Photo: Cláudio Dias Timm. Licensed under Creative Commons Attribution- ShareAlike 2.0 Generic License. Available: https://fr.wikipedia.org/wiki/Fichier:Hoplosternum_littorale.jpg. (July 2019). 1 Native Range and Status in the United States Native Range From Froese and Pauly (2019): “South America: Most Cis-Andean South American river drainages north of Buenos Aires, Argentina [Reis 2003].” Froese and Pauly (2019) and CABI (2019) lists Hoposternum littorale as native to Trinidad Tobago, Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela. 1 From Nico et al. (2019): “Native Range: Tropical America. Occurs in Trinidad, and is widespread in South America east of the Andes and north of Buenos Aires, including the Rio Orinoco, coastal rivers of the Guianas, Rio Amazonas basin, Rio Paraguay, lower Rio Parana and coastal systems in southern Brazil (Reis 1997).” From CABI (2019): “Over its native range, this species occurs in lowland areas of Trinidad, Guyana, Suriname, French Guiana, Bolivia, Paraguay, Argentina and Brazil (Nico et al., 1996).” Status in the United States From Froese and Pauly (2019): “Introduced in the USA [Orfinger 2015].” “A population was discovered in ditches of the Indian River lagoon system of Florida in late 1995 [Bartley 2006]. Populations have been found in the St. Johns and Kissimmee River drainages [Nico et al. 2011].” According to Nico et al. (2019), nonindigenous occurrences of Hoplosternum littorale have been reported in the following states, with range of years and hydrologic units in parentheses: Florida (1995-2019; Alafia; Big Cypress Swamp; Caloosahatchee; Cape Canaveral; Charlotte Harbor; Crystal-Pithlachascotee; Daytona-St.
    [Show full text]