Cryptic diversification, phenotypic plasticity, and host specialization in a sponge-dwelling goby

Coral Reefs, Journal Year: 2024, Volume and Issue: 43(2), P. 391 - 403

Published: Feb. 22, 2024

Language: Английский

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Diet and size-at-birth affect larval rockfish condition and survival

Marine Ecology Progress Series, Journal Year: 2024, Volume and Issue: 745, P. 95 - 114

Published: Aug. 7, 2024

Feeding success and maternal effects on larval size have long been hypothesized to be important contributors interannual recruitment variability in marine fishes. This study examined the feeding ecology influences of diet at birth length growth rockfishes ( Sebastes spp.). Prey carbon biomass selection were calculated from gut contents, was estimated using otolith core size, recent derived outer increment widths. Biomass contributions preferred prey data integrated into Bayesian hierarchical models predicting growth. Larvae primarily fed selected for copepod nauplii calanoid copepodites, modulating with ontogeny response availability. Based weight, relative contribution copepodites more strongly positively correlated than that nauplii. Younger larvae experienced faster association copepodite consumption older larvae. Positive radius suggest initial believed mediated by provisioning, increases likelihood survival, larger These findings ultimately provide evidence selective mediate rockfish survival early life stages.

Language: Английский

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Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

Copeia, Journal Year: 2020, Volume and Issue: 108(4)

Published: Dec. 18, 2020

Gobies (family Gobiidae) have a complex mechanosensory lateral line system characterized by reduced canals and dramatic proliferation of small superficial neuromasts (on "sensory papillae"), which are arranged in lines on the head, trunk, tail. A suite morphological methods was used to describe distribution morphology canal neon goby, Elacatinus lori, ontogeny for first time any gobiiform fish. Portions only three cranial retained they contain total eight neuromasts. In addition, 128–155 found six head series (comprising 33 neuromast or rows). Superficial one body (65–80 groups vertical "stitches") caudal fin (3 lines, each located between rays comprised many neuromasts; 27–53 neuromasts) extending tip fin. The general is established early during larval stage, numbers increase within among resulting an overall complexity system. On day-of-hatch, 22 present. At ∼15 days post-hatch, all present, and, post-settlement juveniles ("settlers"), enclosed ∼185 All (∼40 lm long) diamond-shaped, but subpopulations (canal neuromasts, homologs, defined based their location arrangement ("tip-to-tip" "side-by-side"). distinctions help reveal structural functional organization will contribute interpretation patterns other gobiiforms. comparison number 12 species Tigrigobius (sister genera) revealed variation that live different reef microhabitats, suggests adaptive evolution evident closely related taxa.

Language: Английский

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Automated flow control of a multi-lane swimming chamber for small fishes indicates species-specific sensitivity to experimental protocols

Conservation Physiology, Journal Year: 2020, Volume and Issue: 9(1)

Published: Dec. 7, 2020

In fishes, swimming performance is considered an important metric to measure fitness, dispersal and migratory abilities. The of individual larval fishes often integrated into models make inferences on how environmental parameters affect population-level dynamics (e.g. connectivity). However, little information exists regarding experimental protocols the marine fish larvae. addition, technical setups used lack automation accurate control water quality flow velocity. this study, we automated multi-lane chambers for small by developing open-source algorithm. This allowed us execute repeatable scenarios reduce operator interference inaccuracies in velocity typically associated with manual control. Furthermore, made structural modifications a prior design areas lower We then validated new using computational fluid particle-tracking software. algorithm provided alignment between set measured velocities it test whether faster critical speed (

Language: Английский

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Parental Care

CRC Press eBooks, Journal Year: 2022, Volume and Issue: unknown, P. 159 - 166

Published: Sept. 6, 2022

Parents play a key role in promoting the survival of their offspring, yet care is often given at expense other activities. Therefore, optimal parenting strategy can shift depending on parental environment. This especially true species with biparental care, as parents must account for own environment well motivations and capabilities partner. Moreover, mechanisms underlying behaviour constrain how parent manages demands parenting. Conversely, selection behaviours might facilitate evolution that allow to manage these demands. A question then arises: when faced challenges parenting, do successfully raise offspring? Anemonefishes provide unique opportunities explore this related questions tractability laboratory field allows comprehensive studies into proximate ultimate causes care. chapter begins by describing well-known variations anemonefishes. Next, recent advances our understanding plasticity personality negotiations between parents, are discussed. Lastly, promising avenues highlighted future research

Language: Английский

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Links between the timing of life‐history transitions and dietary and morphological variation during early life history in the sand goby, Pomatoschistus minutus

Journal of Fish Biology, Journal Year: 2023, Volume and Issue: 103(3), P. 684 - 694

Published: June 19, 2023

Bipartite life histories involve a suite of morphological changes that support the pelagic to demersal transition and an expanded range prey options microhabitats. Pelagic individuals are thought shift (settle) their preferred benthic habitat at earliest opportunity once they have attained minimum level competency access new environment. In theory, early in larval morphology (collectively termed 'metamorphosis'), diet-a measure habitat-use-ought be synchronous. Yet relationships may decoupled by factors linked behaviour, availability or complexity, few descriptions exist allow such synchrony assessed. The sand goby, Pomatoschistus minutus, is common coastal fish across north-western Europe, with size metamorphosis settlement around 10 16-18 mm standard length (SL), respectively. We sampled shoreline juvenile populations examine between morphology, diet stage. Prey diversity increased body length; however, dietary change was clearest SL, reduction calanoid copepods larger as Nereis polychaetes mysid amphipod crustacea. Early growth five capture processing morphologies rapid. Four these showed subsequent marked slower growth, but none were aligned only mouth width coincided settlement. history P. minutus appears geared towards protracted reorganization prior alternative resources. Larval seems limited consequence this regard. Comparable studies other Baltic Sea fishes would confirm whether dynamics relate shared environmental pressures intrinsic biology.

Language: Английский

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Molecular identification of Brachygenys and Haemulon species (Perciformes: Haemulidae) from the Brazilian coast

Neotropical Ichthyology, Journal Year: 2021, Volume and Issue: 19(2)

Published: Jan. 1, 2021

Abstract The fishes of the Haemulidae family are currently allocated to 19 genera with a worldwide distribution in tropical and subtropical waters world’s oceans. Brachygenys Haemulon important reef fish Brazil, as they occur large shoals, which both ecologically commercially valuable. This study identified Brazilian species using DNA barcodes. While we found only single lineage chrysargyrea, melanurum, H. parra, squamipinna, more than one molecular operational taxonomic unit (MOTU) was atlanticus, aurolineatum, plumieri, indicating possible existence discrete populations or cryptic species.

Language: Английский

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Simple larvae sustain the world’s smallest marine vertebrates

Coral Reefs, Journal Year: 2020, Volume and Issue: 40(1), P. 75 - 82

Published: Nov. 2, 2020

Language: Английский

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Multisensory navigational strategies of hatchling fish for dispersal

Current Biology, Journal Year: 2023, Volume and Issue: 33(22), P. 4917 - 4925.e4

Published: Oct. 20, 2023

Language: Английский

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Composición taxonómica de las larvas de peces en el arrecife coralino de La Azufrada, Pacífico colombiano, entre 2017 a 2019

Boletín Científico Centro de Museos Museo de Historia Natural, Journal Year: 2023, Volume and Issue: 27(2), P. 245 - 261

Published: July 1, 2023

Objetivo: Conformar el listado taxonómico de las larvas peces asociadas a la columna agua del arrecife coralino La Azufrada, Pacífico Oriental Tropical (POT), en periodo comprendido entre 2017 2019, acompañado con tipo hábitat que ocupa especie estado adulto y estadio desarrollo se encontró larva. Alcance: Incrementar conocimiento sobre riqueza especies marinos asociados formaciones coralinas colombiano través los estadios iniciales desarrollo. Metodología: Durante dos campañas muestreo anuales (marzo septiembre) realizaron recolectas zooplancton diurnas nocturnas nueve estaciones dispuestas Azufrada isla Gorgona utilizando una red bongo luz malla 300 500 micras. En laboratorio, separaron todas muestras identificaron hasta menor nivel posible. Resultados: Se capturaron 4779 peces, siendo identificadas 88 especies, pertenecientes 46 familias. Cuarenta registraron por primera vez para esta localidad, incrementando registro 162 taxa. Las familias más abundantes fueron Engraulidae, Bregmacerotidae, Haemulidae, Myctophidae Carangidae, estando ensamblaje dominado pelágico-costeras (Bregmaceros bathymaster), pelágica (Cetengraulis mysticetus) batipelágica (Diaphus pacificus). Conclusión: incrementó científico presencia arrecifes coralinos oriental tropical colombiano, información permitirá fortalecer acciones estrategias conservación este ecosistema estratégico.

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