Results: 54

Crinoidea y Asteroidea (Echinodermata) del talud de la península de Yucatán, de la Colección Nacional de Equinodermos de México

Rev. biol. trop; 72 (supl.1), 2024
Resumen Introducción: Las especies de las clases Crinoidea y Asteroidea se distribuyen en gran variedad de hábitats en todos los océanos desde la zona intermareal hasta grandes profundidades, existen pocos registros en aguas mexicanas, a profundidades superiores a los 200 m, los escasos registros ex...

Equinodermos de la colección biológica del Laboratorio de Ecología Molecular, Microbiología y Taxonomía (LEMITAX) de la Universidad de Guadalajara, México

Rev. biol. trop; 72 (supl.1), 2024
Resumen Introducción: Las colecciones biológicas representan los cimientos para el conocimiento y manejo de la biodiversidad de una región. No obstante, en México, y en particular en el Pacífico central mexicano (PCM), las colecciones regionales enfocadas en equinodermos, son escasas. La colecció...

Recent molecular techniques to strengthen ecological studies in echinoderms

Rev. biol. trop; 72 (supl.1), 2024
Abstract Introduction: Echinoderms, an integral component of marine ecosystems worldwide, have captivated scientific interest for centuries. Despite this longstanding attention, comprehending key facets such as trophic relationships, diet composition, and host-microbiota relationships still represents ...

Riqueza y densidad de equinodermos en los arrecifes rocosos de Punta Amapala, El Salvador

Rev. biol. trop; 72 (supl.1), 2024
Resumen Introducción: Los equinodermos son animales estrictamente acuáticos y de los grupos de invertebrados marinos cuya importancia ecológica es crucial para los ambientes en donde habitan. La característica más destacada es su simetría pentarradial. Estos organismos pueden distribuirse en una ...

Evaluating the reliability of DNA Barcoding for Central American Pacific shallow water echinoderms identification: a molecular taxonomy and database accuracy analysis

Rev. biol. trop; 72 (supl.1), 2024
Abstract Introduction: Molecular divergence thresholds have been proposed to distinguish recently separated evolutive units, often displaying more accurate putative species assignments in taxonomic research compared to traditional morphological approaches. This makes DNA barcoding an attractive identif...

Effect of gamete aging on fertilization success of the sea urchin Arbacia dufresnii (Arbacioida: Arbaciidae)

Rev. biol. trop; 72 (supl.1), 2024
Abstract Introduction: Short-term gametes storage is an inexpensive and simple technique that allows the use of the same batch of eggs or sperm at different times, maximizing the application of research protocols and the use of gametes in production. Arbacia dufresnii is a sea urchin species with prove...

Biochemical composition of some Echinodermata (Holothuroidea, Echinoidea) from the Red Sea, Egypt

Braz. j. biol; 82 (), 2022
In the present study, the biochemical composition of some Echinodermata (Holothuroidea, Echinoidea) from the Red Sea, Egypt was investigated. The results showed that the highest percentage of saturated fatty acids (SFA) was in Holothuria nobilis and the lowest percentage was recorded in Holothuria scabra...

Bycatch of Asteroidea from shrimp trawl fishery in the southwestern Atlantic Ocean – Brazil

Pap. avulsos zool; 62 (), 2022
Shrimp trawling is considered a significant negative impact on the marine ecosystem, especially on the benthic community. Sea stars (Echinodermata: Asteroidea) are one of the most affected groups by unintentional catches. This study was performed at the Santana Archipelago, a Marine Protected Area in the...

Problems and puzzles in echinoderm demography

Rev. biol. trop; 69 (supl. 2), 2021
Introduction: There are problems and puzzles in understanding reproduction, growth and mortality in echinoderm life cycles. Objective: Explore problems and puzzles in life cycles that are important and challenging. Methods: The literature is used to elucidate problems associated with all life stages. Res...

Expansion of the genus Massinium (Holothuroidea: Thyonidae) to the American continent and description of a new species

Rev. biol. trop; 69 (supl. 2), 2021
Introduction: The genus Massinium includes 11 species, most from the Indo Pacific Ocean, and had not previously being reported from the American continent. Objective: To present the new record of the genus Massinium and describe a new species of this genus. Methods: Material collection was done by SCUBA-...