Functional relationships were derived in order to describe the effects of fish weight (262–2066 g), temperature (1–14° C), prey size and ration (0.4–8.4% body weight) on gastric evacuation cod fed four natural types. Interindividual (unexplained) differences among voluntary relatively large. Power functions appropriate for describing half‐time evacuation. Effects meal and/or appeared counterbalance size. It is suggested that when different sizes are fixed proportions their time constant...

A model that describes single-meal evacuation in Atlantic cod, Gadus morhua L., fed whole natural prey was developed and tested using a large set of data. Evacuation rates clearance patterns were derived for four important prey. Results Monte Carlo error analysis suggested that: (i) the single meals is highly temperaturedependent process; (ii) meal size (as percentage body weight) also modulating rate evacuation. When applied to sequential-meal situations, adequately simulated digestion...

RESUMO:Este trabalho teve como objetivo verificar o efeito dos extratos aquosos de raízes do cÓl1ex caule e folhas mata-cacau (Aeanlhosyris paulo-alvinii Banoso) na germinação crescimento plântulas cacau (Theobroma caeao L.) milho (Zea ma)'s feijão (Plwseolus vugaris L

Particles 2 mm or smaller may be passed relatively easily through the pylorus of cod, Gadus morhua L., but, under some conditions, 5 particles are held in stomach for prolonged periods. The emptying indigestible appears to impaired by consumption additional meals, and retention these occur fish fed multiple meals. findings agree general with those reported mammals results discussed relation mechanisms thought control gastric motor activity patterns.

Whole herring, Clupea harengus , were digested and emptied from cod stomachs much more slowly than meals of minced showing that prey integrity is an important factor controlling emptying. Increasing the energy content herring by addition fish meal oil led to a reduction in percentage 24 h subsequent feeding, but rates throughput on enriched diet high. The physical form appears be control gastric emptying cod. results are discussed with respect possible effects dietary type absorptive...

The difficulty of ensuring adequate statistical coverage whole fleets is a challenge for the implementation observer programmes and may reduce usefulness data they obtain management purposes. This makes it necessary to find cost-effective alternatives. Electronic monitoring (EM) systems are being used in some fisheries as an alternative or complement human observers. objective this study was test use reliability EM on tropical tuna purse-seine fishery. To achieve objective, seven trips purse...

Abstract The fruit of Euterpe oleracea provides an energetic and nutritional juice that moves the Brazilian economy. major obstacle in production chain this species is scarcity off‐season lack knowledge about environmental or genetic factors control its production. We collected seeds from two populations E. produce fruits at different times year Amazon estuary (population 1, west region; population 2, east region) performed progeny tests (installed to determine hydroclimatic are related...

Abstract Case study of the stimulation 9 subsea wells throughout offshore Angola utilizing a riserless light well intervention vessel for hydraulic access only, plus dedicated treatment injection. These were intervened over two campaigns in 2023 and 2024 with deployment various acid systems to remove different formation damage mechanisms achieve production injection goals. Candidate selection investigated multiple sources data compare current trends, versus forecasted results from reservoir...

The ecology of common snook Centropomus undecimalis in Amatique Bay, a tropical estuary eastern Guatemala, was investigated and life‐history traits were used to conduct meta‐analysis the species from Florida Brazil. reproduction cycle C. strongly related precipitation cycle, with lag 2 months. Spawning occurred April November peak spawning after onset summer rains. Protandric sex reversal early dry season (December) before somatic recovery spawning. growth preceded that body condition by c ....

The population structure, reproductive biology, age and growth, diet of shortfin makos caught by pelagic longliners (2005–10) bather protection nets (1978–2010) in the south-west Indian Ocean were investigated. mean fork length (FL) measured observers on targeting tuna, swordfish sharks was similar, decreased from east to west, with smallest individuals occurring near Agulhas Bank edge, June November. Nearly all immature, equal sex ratio. Makos significantly larger, males more frequent, 93%...

A comparison is made of the feeding habits cod in two fjords northern Norway, Ullsfjord and Balsfjord. Of two, warmer fairly typical Norwegian coastal waters. Balsfjord closer to Barents Sea its temperature regime ecosystem. In Balsfjord, main food small consisted benthic crustaceans, while large fed mainly on capelin, with occasional concentration prawns when near seabed or krill pelagically. Ullsfjord, crustaceans were present diet all sizes, being demersally that larger The dietary...

Marine species such as deep-sea geryonid crabs often exhibit high spatio-temporal variability in abundance and size over depth, substratum type season, therefore data collected from a single gear may not represent the whole population. Complementary trawl (soft substratum) trap (hard fisheries were analysed within general linear modelling (GLM) framework to assess distribution, population structure of Chaceon macphersoni off eastern South Africa. Catch rates, mean size, maturation sex ratio...

The conservation status of several pelagic shark species is considered vulnerable with declining populations, yet data on fishing mortality remain limited for large ocean regions. Pelagic sharks are increasingly retained by mixed-species fisheries, or discarded and not reported selective fisheries tunas (Thunnus spp.) swordfish (Xiphias gladius). We estimated the (landings plus discard mortalities) in a South African-flagged longline fishery diverse targeting behaviour. A hierarchical...

In the paper Stability of Holomorphic Foliations with Split Tangent Sheaf one finds a study locus $\mathrm{Dec}$ where tangent sheaf {\it family} foliations in $\mathbb{P}_{\mathbb C}^n$ is decomposable}, i.e. sum line bundles. A prime conclusion an ``openness'' result: once singular has sufficiently large codimension, turns out to be open. present paper, we $\mathrm{LF}$ points family distributions locally free}. Through general Commutative Algebra, show that open provided singularities...

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 533:29-46 (2015) - DOI: https://doi.org/10.3354/meps11342 Ecological linkages in a Caribbean estuary bay H. Andrade1,2,*, J. Santos1, M. Ixquiac3 1Norwegian College of Fishery Science, University Tromsø, 9037 Norway 2Akvaplan-niva AS, Framsenteret, 9296 3Centro de Estudios del Mar y Acuicultura, Universidad...

Research on life-history variations in widely distributed fish species is needed to understand global warming impacts populations and improve fisheries management advice. The lane snapper Lutjanus synagris (Linnaeus, 1758) commercially important the Western Central Atlantic, where spread information its traits available. We studied growth, age, reproduction mortality of Guatemalan Caribbean, warmest part distribution range, collated new with published data a latitudinal analysis extending...