scholarly journals Ophioderma hendleri sp. nov. (Echinodermata: Ophiuroidea: Ophiodermatidae) and its congeners from the Eastern Pacific

2020 ◽  
Vol 729 ◽  
Author(s):  
Rebeca Granja-Fernández ◽  
Tania Pineda-Enríquez ◽  
Francisco Alonso Solís-Marín ◽  
Alfredo Laguarda-Figueras
Keyword(s):  
Costa Rica ◽  
Original Description ◽  
Tropical Pacific ◽  
Distribution Range ◽  
Eastern Pacific ◽  
Type Material ◽  
Valid Species ◽  
Eastern Tropical Pacific ◽  
The World ◽  
Cocos Island

The widespread Ophioderma hendleri sp. nov., from the Eastern Tropical Pacific (Mexico to Colombia) is distinguished from its congeners by having radial shields covered by granules, naked adoral shields, up to 11 arm spines, and by its brown and beige coloration. Ophioderma hendleri sp. nov. belongs to the group of species with naked adoral shields (i.e., O. pentacanthum H.L. Clark, 1917, O. variegatum Lütken, 1856), and it has frequently been misidentified as O. panamense Lütken, 1859 or O. variegatum. Therefore, the main aim of the present work was to describe Ophioderma hendleri sp. nov. and differentiate it from its congeners. The original description of O. panamense was incomplete; thus, we provide a redescription. Due to the confusion in previous designations of its type material, we designate a lectotype and paralectotype of O. variegatum. Finally, we expand the distribution range of O. pentacanthum to Cocos Island, Costa Rica. With this work, the total number of valid species of Ophioderma Müller & Troschel, 1840 in the world increases to 33 and in the Eastern Pacific to nine species.

scholarly journals Movements of scalloped hammerhead sharks (Sphyrna lewini) at Cocos Island, Costa Rica and between oceanic islands in the Eastern Tropical Pacific

PLoS ONE ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. e0213741 ◽  
Author(s):  
Elena Nalesso ◽  
Alex Hearn ◽  
Oscar Sosa-Nishizaki ◽  
Todd Steiner ◽  
Alex Antoniou ◽  
...  
Keyword(s):  
Costa Rica ◽  
Oceanic Islands ◽  
Tropical Pacific ◽  
Eastern Tropical Pacific ◽  
Sphyrna Lewini ◽  
Scalloped Hammerhead ◽  
Cocos Island ◽  
Hammerhead Sharks

scholarly journals NOTES ON THE ECOLOGY OF THE COLOMBIAN LEAFTOED GECKO (PHYLLODACTYLUS TRANSVERSALIS), ENDEMIC TO MALPELO ISLAND

2016 ◽  
Vol 42 (2) ◽  
Author(s):  
Mateo López Victoria ◽  
Matthias Jurczyk ◽  
Volkmar Wolters
Keyword(s):  
Population Size ◽  
Breeding Season ◽  
Habitat Preference ◽  
Habitat Preferences ◽  
Original Description ◽  
Tropical Pacific ◽  
Reference Points ◽  
Eastern Tropical Pacific ◽  
Reptile Species ◽  
Malpelo Island

The Colombian leaf-toed gecko (Phyllodactylus transversalis) is the least known reptile species of Malpelo Island (Eastern Tropical Pacific). In the 37 years since its original description, no single study strictly dedicated to this species has been conducted. With the goal of providing information on the ecology and population size of this gecko, data collected during two visits to the island are presented. Behavior and reproduction were studied by following individuals during the night and by searching for hidden individuals and eggs during the day. Population’s density and habitat preferences were estimated by classifying the island’s surfaces into four types and counting geckos inside those habitats within band transects. General morphological measurements of geckos were performed as reference points for future comparisons. Phyllodactylus transversalis lays its eggs in narrow crevices of rocks, apparently communally. Reproduction seems to take place during most of the year, probably associated with the peak breeding season of seabirds. Although conspecifics shared shelters during the day, densities during the night suggest no apparent habitat preference for foraging. Population size of this species was estimated at approximately 114000 individuals.

Assessing the vulnerability of demersal elasmobranchs to a data-poor shrimp trawl fishery in Costa Rica, Eastern Tropical Pacific

2018 ◽  
Vol 217 ◽  
pp. 321-328 ◽  
Author(s):  
Tayler M. Clarke ◽  
Mario Espinoza ◽  
Raquel Romero Chaves ◽  
Ingo S. Wehrtmann
Keyword(s):  
Costa Rica ◽  
Tropical Pacific ◽  
Eastern Tropical Pacific ◽  
Trawl Fishery ◽  
Shrimp Trawl

scholarly journals A new Lepeophtheirus (Copepoda: Siphonostomatoida: Caligidae) from Isla del Coco National Park, Costa Rica, Eastern Tropical Pacific

2017 ◽  
pp. 235-242
Author(s):  
Eduardo Suárez-Morales ◽  
Rebeca Gasca
Keyword(s):  
New Species ◽  
Costa Rica ◽  
National Park ◽  
Relative Length ◽  
Tropical Pacific ◽  
Costa Rican ◽  
Tropical Region ◽  
Nominal Species ◽  
Eastern Tropical Pacific ◽  
Genital Complex

Among the several groups of copepods that are teleost parasites, the siphonostomatoid family Caligidae is by far the most widespread and diverse. With more than 108 nominal species, the caligid genus Lepeophtheirus von Nordmann is one of the most speciose. There are no reports of this genus in Costa Rican waters. A new species of Lepeophtheirus is herein described based on female specimens collected from plankton samples in waters off Bahía Wafer, isla del Coco, an oceanic island in the Eastern Tropical Pacific. The new species, L. alvaroi sp. nov., has some affinities with other congeners bearing a relatively short abdomen, a wider than long genital complex and a 3-segmented exopod of leg 4. it differs from most of these species by the presence of an unbranched maxillular process and by the relative lengths of the terminal claws of leg 4, with two equally long elements. it is most closely related to two other Eastern Pacific species: L. dissimulatus Wilson, 1905 and L. clarionensis Shiino, 1959. it differs from these species by the proportions and shape of the genital complex, the shape of the sternal furca, the relative length of the maxillar segments, the absence of a pectiniform process on the distal maxillar segment, the length of leg 4 and the armature of leg 5. The new species represents the first Lepeophtheirus described from Costa Rican waters of the Pacific. The low diversity of this genus in this tropical region is explained by its tendency to prefer hosts from temperate latitudes. Until further evidence is found, the host of this Lepeophtheirus species remains unknown. Citation: Suárez-Morales, E. & R. Gasca. 2012. A new Lepeophtheirus (Copepoda: Siphonostomatoida: Caligidae) from isla del Coco National Park, Costa Rica, Eastern Tropical Pacific. Rev. Biol. Trop. 60 (Suppl. 3): 235-242. Epub 2012 Dec 01.

scholarly journals Facilitative behavioral interactions between deepwater piscivores at Isla del Coco National Park and Las Gemelas Seamount, Costa Rica

2016 ◽  
Vol 64 (1) ◽  
pp. 187 ◽  
Author(s):  
Peter J. Auster ◽  
Astrid Sánchez-Jiménez ◽  
Jesús A. Rodríguez-Arrieta ◽  
Andrés J. Quesada ◽  
Cinthya Pérez ◽  
...  
Keyword(s):  
Costa Rica ◽  
Ad Hoc ◽  
Time Frame ◽  
Tropical Pacific ◽  
Valuable Insight ◽  
Apex Predators ◽  
Eastern Tropical Pacific ◽  
Behavioral Interactions ◽  
Conservation Actions ◽  
Patterns And Processes

<p>The shallow waters around Isla del Coco, Costa Rica, have the highest density of apex predators within the Eastern Tropical Pacific. This represents a unique opportunity to assess the structure of predatory interactions in a community relatively unimpacted by fishing. Facilitation of predation has commonly been observed in shallow reef systems, limited in depth by observations via scuba divers. Here we present a preliminary catalog of facilitative behavioral interactions between 12 taxa of deepwater piscivores at Isla del Coco and Las Gemelas Seamount in the Eastern Tropical Pacific, collected via video from submersible vehicles to depths of approximately 311 m from 2002-2012. Observations were ad hoc and likely represent only a portion of the web of interactions that occur in this ecological setting. That such interactions can be observed to 300 m during the narrow time frame of submersible dives suggests that direct behavioral facilitation of piscivory may play a significant role in the apex predator guild of deepwater fishes. Investigating the extent and population-community consequences of such interactions will provide valuable insight into patterns and processes that occur in communities protected from direct fisheries as well as focus conservation actions. Rev. Biol. Trop. 64 (Suppl. 1): S187-S196. Epub 2016 February 01.</p><p> </p>

New records of Rheumatobates Bergroth (Hemiptera: Heteroptera: Gerridae) from the Pacific coast of Colombia and Costa Rica, with a key to males of Rheumatobates in the Eastern Tropical Pacific

Zootaxa ◽  
2012 ◽  
Vol 3427 (1) ◽  
pp. 33 ◽  
Author(s):  
DORA N. PADILLA-GIL ◽  
BERNALD PACHECO-CHAVES
Keyword(s):  
Costa Rica ◽  
Pacific Coast ◽  
New Records ◽  
Tropical Pacific ◽  
Adult Males ◽  
Eastern Tropical Pacific ◽  
Ecological Data ◽  
The Pacific

Three species of the genus Rheumatobates, R. peculiaris, R. longisetosus, and R. probolicornis are recorded from the Pacific coast of Colombia, municipality of Tumaco (department of Nariño); and R. bergrothi is recorded from the Pacific coast of Costa Rica; the macropterous morph of R. longisetosus is described, ecological data are provided and it is included together with other four species in a key to adult males from Eastern Tropical Pacific; the male habitus for six species is illustrated.

Worldwide revision of the genus Phaenoglyphis (Hymenoptera, Cynipoidea, Figitidae, Charipinae)

2019 ◽  
Vol 50 (2) ◽  
pp. 235-296 ◽  
Author(s):  
Mar Ferrer-Suay ◽  
Jesús Selfa ◽  
Noel Mata-Casanova ◽  
Nicolas Pérez Hidalgo ◽  
Juli Pujade-Villar
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Morphological Characters ◽  
Type Material ◽  
Valid Species ◽  
Key To Species ◽  
World Species ◽  
Incertae Sedis ◽  
The World ◽  
Two New Species

A complete revision of the world species of the genus Phaenoglyphis Förster, 1869 has been conducted. A total of 25 species of Phaenoglyphis are valid after studying their type material. Two new species are described: Phaenoglyphis belizini sp. n. and Phaenoglyphis palmirae sp. n. Two species are synonymized: P. dolichocera (Cameron, 1889) with P. nigripes (Thomson, 1877) and P. pecki Andrews, 1978 with P. villosa (Hartig, 1841). Phaenoglyphis bangalorensis Kurian, 1953 was considered as incertae sedis. Phaenoglyphis duplocarpentieri (Kieffer, 1904) and P. hedickei Hedicke, 1928 are considered lost. Other three species are discarded as valid species because they are missing important parts without which the species cannot be defined: P. cincta (Hartig, 1841), P. frigidus (Belizin, 1968) and P. repentinus Belizin, 1962. A complete redescription and an illustrative plate are presented. A key to species of the genus Phaenoglyphis is given. Phylogenetic analysis based on morphological characters has been performed.

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