Geology topics

Victor M. Vidal-Martinez

Publications and source records attributed to Victor M. Vidal-Martinez.

3 recordsLinked to original sources

USGS2026

Adult digeneans of fishes from the lagoon flats of Palmyra Atoll, Eastern Indo-Pacific, with the description of three new species of the Monorchiidae Odhner, 1911

Palmyra Atoll is considered a well-conserved and relatively pristine area with high fish diversity. Since digenean trematodes represent one of the most abundant and diverse parasites of marine fish, the aim of this study was to perform taxonomic analysis of adult digeneans in fishes from the intertidal lagoon of Palmyra Atoll. Parasitological analyses were conducted on 653 individual fishes from 44 species collected from the intertidal sand flats, lagoon, and submerged reefs. Along with morphological descriptions of the adult digeneans, we report prevalence, mean intensities, host species, and tissue microhabitats. We identified 306 individual digeneans representing ten species across six families: one enenterid, Enenterum elongatum Yamaguti 1970; one gyliauchenid, Ichthyotrema vogelsangi Caballero & Bravo-Hollis 1952; one lepocreadiid, Diploproctodaeum arothroni Bray & Nahhas 1998; two opecoelids, Opecoelus mulloidichthydis Yamaguti 1970 and Paropecoelus parupenei Yamaguti 1970; one zoogonid, Lecithostaphylus nitens (Linton 1898) Linton 1940; and four monorchiids, Hurleytrematoides coronatus Yamaguti 1970; Sinistroporomonorchis palmyrensis n. sp.; Sinistroporomonorchis crenimugilis n. sp.; and Lasiotocus glossodontae n. sp. The composition of adult digenean species in fishes from Palmyra Atoll’s sand flats shows significant affinities with previously reported for the Eastern Indo-Pacific (EIP) marine ecoregion, specifically Hawaii and the Central Indo-Pacific (CIP), as well as the Great Barrier Reef.

Parasitology Research↗

USGS2019

Parasitic copepods (Crustacea, Hexanauplia) on fishes from the lagoon flats of Palmyra Atoll, Central Pacific

We surveyed copepods parasitic on the fishes at Palmyra, a remote atoll in the Central Indo-Pacific faunal region. In total, we collected 849 individual fish, representing 44 species, from the intertidal lagoon flats at Palmyra and recovered 17 parasitic copepod species. The parasitic copepods were: Orbitacolax williamsi on Mulloidichthys flavolineatus ; Anuretes serratus on Acanthurus xanthopterus ; Caligus confusus on Carangoides ferdau , Carangoides orthogrammus , Caranx ignobilis , Caranx melampygus , and Caranx papuensis ; Caligus kapuhili on Chaetodon auriga and Chaetodon lunula ; Caligus laticaudus on Rhinecanthus aculeatus , Pseudobalistes flavimarginatus , M. flavolineatus , Upeneus taeniopterus , Chrysiptera glauca , and Epinephalus merra ; Caligus mutabilis on Lutjanus fulvus and Lutjanus monostigma ; Caligus randalli on C. ignobilis ; Caligus sp. on L. fulvus ; Caritus serratus on Chanos chanos ; Lepeophtheirus lewisi on A. xanthopterus ; Lepeophtheirus uluus on C. ignobilis ; Dissonus similis on Arothron hispidus ; Nemesis sp. on Carcharhinus melanopterus ; Hatschekia longiabdominalis on A. hispidus ; Hatschekia bicaudata on Chaetodon auriga and Chaetodon lunula ; Kroyeria longicauda on C. melanopterus and Lernanthropus sp. on Kyphosus cinerascens . All copepod species reported here have been previously reported from the Indo-Pacific but represent new geographical records for Palmyra, demonstrating large-scale parasite dispersion strategies.

ZooKeys↗

USGS2011

Trematode communities in snails can indicate impact and recovery from hurricanes in a tropical coastal lagoon

In September 2002, Hurricane Isidore devastated the Yucatán Peninsula, Mexico. To understand its effects on the parasites of aquatic organisms, we analyzed long-term monthly population data of the horn snail Cerithidea pliculosa and its trematode communities in Celestún, Yucatán, Mexico before and after the hurricane (February 2001 to December 2009). Five trematode species occurred in the snail population: Mesostephanus appendiculatoides , Euhaplorchis californiensis , two species of the genus Renicola and one Heterophyidae gen. sp. Because these parasites use snails as first intermediate hosts, fishes as second intermediate hosts and birds as final hosts, their presence in snails depends on food webs. No snails were present at the sampled sites for 6 months after the hurricane. After snails recolonised the site, no trematodes were found in snails until 14 months after the hurricane. It took several years for snail and trematode populations to recover. Our results suggest that the increase in the occurrence of hurricanes predicted due to climate change can impact upon parasites with complex life cycles. However, both the snail populations and their parasite communities eventually reached numbers of individuals and species similar to those before the hurricane. Thus, the trematode parasites of snails can be useful indicators of coastal lagoon ecosystem degradation and recovery.

International Journal for Parasitology↗