High Prevalence and Potential Impacts of Caligid Ectoparasites on Larval Atlantic Croaker (Micropogonias undulatus) in the Chesapeake Bay

Ribeiro, Filipe; Hilton, Eric J.; Carnegie, Ryan B.

doi:10.1007/s12237-015-0010-z

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…The median was lower than other previously published data for the same larval species (14·5%, Landaeta et al ., ; 12·8%, Palacios‐Fuentes et al ., ) and it can be consequence of different temporal scales involved in these studies. Low prevalence of ectoparasites on fish larvae has been described during winter, increasing in spring and autumn, in nearshore waters off central Chile (Landaeta et al ., ) and in estuarine waters of Chesapeake Bay (Ribeiro et al ., ). Water‐column stratification and mixing also affect the ectoparasite load in postlarval and juvenile fishes (Neilson et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Parasitic copepods affect morphospace and diet of larvae of a temperate reef fish

Jahnsen-Guzmán

Bernal-Durán

Landaeta

2018

Journal of Fish Biology

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The effects of ectoparasites on larvae of the clingfish Gobiesox marmoratus were evaluated at the dietary and morphometric levels. The larvae and ectoparasites were collected by nearshore plankton samplings during October, November and December 2013 off El Quisco Bay, central Chile. The standardized abundance of total larvae and those ectoparasitized larvae (PL) was positively related and high parasite prevalence was found throughout the sampling period (up to 38%). Geometric morphometrics analyses indicate main changes in the shape through early ontogeny and subtle but significant variations between PL and non-parasitized larvae (NPL). Prey composition varied between PL and NPL; small size (<6 mm standard length, L ) parasitized larval G. marmoratus ate mostly gastropod larvae, whereas small non-parasitized specimens ate mainly cirripede nauplii. All larger (>8 mm L ), pre-settlement stages parasitized by Trifur and, or Caligus copepods had content in their gut, suggesting that ectoparasites did not diminish prey capture in host with larger size. Morphometric and dietary changes occurring during larval development were decoupled, both for PL and NPL. The maintenance of a slender, more hydrodynamic body through pelagic development and the ingestion of less-mobile prey in PL suggests non-lethal effects of ectoparasitism on rocky-reef fish larvae.

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Section: Discussionmentioning

confidence: 99%

Parasitic copepods affect morphospace and diet of larvae of a temperate reef fish

Jahnsen-Guzmán

Bernal-Durán

Landaeta

2018

Journal of Fish Biology

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Fish ectoparasite detection, collection and curation

Chew,

Cobcroft,

Hutson

2024

Advances in Parasitology

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Modelling seasonal patterns of larval fish parasitism in two northern nearshore areas in the Humboldt Current System

Paredes

Landaeta

Molinet

et al. 2021

Sci Rep

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Macro- and micro-environmental factors modulate parasite loads in fish, determining parasitic abundances, diversity, and interaction dynamics. In this study, seasonal variations in larval ectoparasites on fish larvae in the northern Humboldt Current System (HCS) were evaluated using a delta-gamma generalized linear model to predict their occurrence frequencies. Fish larvae were collected from two nearshore areas during austral spring–summer and autumn–winter. Only five (of 38) larval fish species were parasitized by copepods: Gobiesox marmoratus, Ophiogobius jenynsi, Helcogrammoides cunninghami, Myxodes sp., and Auchenionchus crinitus. A binomial model showed that the presence/absence of parasitized fish larvae varied among the fish species and their larval abundances, while a positive delta-gamma model showed that ectoparasite frequency varied among the seasons and fish species. Seasonal variations in parasitized fish larvae frequency could be associated with host and parasite reproductive processes, which are related to oceanographic features responsible for larval retention and subsequent higher infestation probabilities. Host length was positively correlated with ectoparasite length, suggesting early infection and combined growth until the detachment of the ectoparasite. Our results suggest that infestation patterns in larval fish species can be identified using delta-gamma models and that they respond to local (retention) and high-scale (HCS) processes.

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High Prevalence and Potential Impacts of Caligid Ectoparasites on Larval Atlantic Croaker (Micropogonias undulatus) in the Chesapeake Bay

Cited by 3 publications

References 23 publications

Parasitic copepods affect morphospace and diet of larvae of a temperate reef fish

Parasitic copepods affect morphospace and diet of larvae of a temperate reef fish

Fish ectoparasite detection, collection and curation

Modelling seasonal patterns of larval fish parasitism in two northern nearshore areas in the Humboldt Current System

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