|
José Luis Castro Aguirre
José Luis Castro Aguirre (24 June 1943 – 20 January 2011) was a Mexican ichthyology, ichthyologist. He was a founding member of the Mexican Ichthyological Society and a member of the Sistema Nacional de Investigadores, National System of Investigators who produced around 150 publications, focusing chiefly on the taxonomy, ecology, and biogeography of the fishes of Mexico. His 1978 book ''Catálogo sistemático de los peces marinos que penetran en aguas continentales de México, con aspectos zoogeográficos y ecológicos'' (''"Systematic catalog of marine fish entering inland waters of Mexico, with zoogeographical and ecological aspects"'') was the first catalog of estuarine fishes of Mexico. Born in Mexico City, he attended the Escuela Nacional de Ciencias Biológicas, National School of Biological Sciences at the Instituto Politécnico Nacional, National Polytechnic Institute (ENCB-IPN) earning a master's degree in 1974 and a PhD in 1986. He worked at the National Fisheries Insti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichthyology
Ichthyology is the branch of zoology devoted to the study of fish, including bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 35,800 species of fish had been described as of March 2025, with approximately 250 new species described each year. Etymology The word is derived from the Ancient Greek words ἰχθύς, ''ikhthus'', meaning "fish"; and λόγος, ''logos'', meaning "study". History The study of fish dates from the Upper Paleolithic Revolution (with the advent of "high culture"). The science of ichthyology was developed in several interconnecting epochs, each with various significant advancements. The study of fish receives its origins from humans' desire to feed, clothe, and equip themselves with useful implements. According to Michael Barton, a prominent ichthyologist and professor at Centre College, "the earliest ichthyologists were hunters and gatherers who had learned how to obtain the most use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypoplectrus Castroaguirrei
''Hypoplectrus'' is a genus of fishes commonly known as hamlets, found mainly in coral reefs in the Caribbean Sea and the Gulf of Mexico, particularly around Florida and the Bahamas. They are a popular choice for hobbyist saltwater aquariums, and come in a variety of colors. Reproduction Hamlets are simultaneous hermaphrodite A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic. The individuals of many ...s (or synchronous hermaphrodites): They have both male and female sexual organs at the same time as an adult, meaning that they function as a male and female, making them one of the few vertebrates that are male and female at the same time. They seem quite at ease mating in front of divers, allowing observations in the wild to occur readily. They do not practice self-fertilization, but when they find a mate, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientists From Mexico City
A scientist is a person who researches to advance knowledge in an area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science. Though Thales ( 624–545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods,Frank N. Magill''The Ancient World: Dictionary of World Biography'', Volume 1 Routledge, 2003 it was not until the 19th century that the term ''scientist'' came into regular use after it was coined by the theologian, philosopher, and historian of science William Whewell in 1833. History The roles of "scientists", and their predecessors before the emergence of modern scientific disciplines, have evolved considerably over time. Scientists of different eras (and before them, natural philosophers, mathematicians, natur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichthyologists
Ichthyology is the branch of zoology devoted to the study of fish, including bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 35,800 species of fish had been described as of March 2025, with approximately 250 new species described each year. Etymology The word is derived from the Ancient Greek words ἰχθύς, ''ikhthus'', meaning "fish"; and λόγος, ''logos'', meaning "study". History The study of fish dates from the Upper Paleolithic Revolution (with the advent of "high culture"). The science of ichthyology was developed in several interconnecting epochs, each with various significant advancements. The study of fish receives its origins from humans' desire to feed, clothe, and equip themselves with useful implements. According to Michael Barton, a prominent ichthyologist and professor at Centre College, "the earliest ichthyologists were hunters and gatherers who had learned how to obtain the most use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2011 Deaths
This is a list of lists of deaths of notable people, organized by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked below. 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 Earlier years ''Deaths in years earlier than this can usually be found in the main articles of the years.'' See also * Lists of deaths by day * Deaths by year (category) {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1943 Births
Events Below, the events of World War II have the "WWII" prefix. January * January 1 – WWII: The Soviet Union announces that 22 German divisions have been encircled at Stalingrad, with 175,000 killed and 137,650 captured. * January 4 – WWII: Greek-Polish athlete and saboteur Jerzy Iwanow-Szajnowicz is executed by the Germans at Kaisariani. * January 10 – WWII: Guadalcanal campaign, Guadalcanal Campaign: American forces of the 2nd Marine Division and the 25th Infantry Division (United States), 25th Infantry Division begin their assaults on the Battle of Mount Austen, the Galloping Horse, and the Sea Horse#Galloping Horse, Galloping Horse and Sea Horse on Guadalcanal. Meanwhile, the Japanese Seventeenth Army (Japan), 17th Army makes plans to abandon the island and after fierce resistance withdraws to the west coast of Guadalcanal. * January 11 ** The United States and United Kingdom revise previously unequal treaty relationships with the Republic of China (1912–194 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mojarra
The mojarras are a family, Gerreidae, of fish in the order Perciformes. The family includes about 53 species found worldwide in tropical and warm temperate regions. They mostly inhabit coastal salt and brackish waters, although some occur in fresh water. Mojarras are a common prey and bait fish in many parts of the world, including the South American coast and Caribbean islands, as well as the Gulf of Mexico and the Atlantic Coast of North America. These species tend to be difficult to identify in the field, and often require microscopic examination. Most species exhibit a schooling behavior and tend to exploit the shallow water refugia associated with coastal areas presumably to avoid large-bodied predators, such as the lemon shark. Mojarra is also commonly used in Latin American countries as a name for various species of the cichlid family, including tilapia. Genera The 10 genera currently assigned to this family are: * '' Deckertichthys'' Vergara-Solana, 2014Vergara-Solan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugerres Castroaguirrei
''Eugerres'' is a genus of ray-finned fish in the family Gerreidae, the mojarras. The genus was erected by David Starr Jordan and Barton Warren Evermann in 1927. They are native to the Atlantic and Pacific coasts of the Americas, occurring mainly in salt and brackish waters, but may enter fresh water. The genus also includes one strict fresh water species, ''E. mexicanus'', native to southern Mexico and Guatemala (''E. castroaguirrei''González-Acosta, A.F. & Rodiles-Hernández, R. (2013)New species of ''Eugerres'' from the Usumacinta Province, México and Guatemala with a redescription of ''E. mexicanus'' (Steindachner, 1863) (Teleostei: Gerreidae). ''Neotropical Ichthyology, 11 (2): 307-318.'' is a junior of ''E. mexicanus'') Species The currently recognized species in this genus are: * '' Eugerres axillaris'' ( Günther, 1864) (black axillary mojarra) * '' Eugerres brasilianus'' ( G. Cuvier, 1830) (Brazilian mojarra) * '' Eugerres brevimanus'' (Günther, 1864) (short-fin mojar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamlet (fish)
''Hypoplectrus'' is a genus of fishes commonly known as hamlets, found mainly in coral reefs in the Caribbean Sea and the Gulf of Mexico, particularly around Florida and the Bahamas. They are a popular choice for hobbyist saltwater aquariums, and come in a variety of colors. Reproduction Hamlets are simultaneous hermaphrodite A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic. The individuals of many ...s (or synchronous hermaphrodites): They have both male and female sexual organs at the same time as an adult, meaning that they function as a male and female, making them one of the few vertebrates that are male and female at the same time. They seem quite at ease mating in front of divers, allowing observations in the wild to occur readily. They do not practice self-fertilization, but when they find a mate, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Hornshark
The Mexican hornshark (''Heterodontus mexicanus'') is a bullhead shark of the family Heterodontidae. This shark is grey-brown in color, with black spots scattered on the fins and body. It has a cylindrical trunk, conical head, and small spiracles behind the eyes. The snout of the Mexican hornshark is very round and blunt. Like all members of the order Heterodontiformes, this shark has fin spines in front of both of its dorsal fins. The first dorsal fin originates before the pectoral fins, while the second dorsal fin originates behind the pelvic fins. The Mexican hornshark reaches a maximum length around 70 cm, but usually reaches between 50 and 60 cm on average. Young hornsharks hatch around 14 cm. Habitat and range Mexican hornsharks are distributed throughout the coast of the Eastern Pacific, mainly around southern Baja California, and possibly as far south as Peru. The rocky bottoms, coral reefs, and sandy areas of the littoral zone create the habitat of this ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sistema Nacional De Investigadores
Sistema Nacional de Investigadores (National System of Researchers) or SNI is a governmental agency established in Mexico in 1984 to promote both the quantity and quality of research in Mexico, especially in the sciences. In the 1980s, the country suffered from “brain drain,” with talent leaving Mexico for better economic opportunities in other places in the world. SNI first worked to establish compensation guides to keep researchers in the country, but since has also been involved in the reform of Mexico's graduate-level education. Membership in the system is prestigious, especially in Levels II, III, and Emeritus, which require demonstration of significant contributions in research as well as teaching and the promotion of research in Mexico. The organization The Sistema Nacional de Investigadores (National System of Researchers) is a governmental agency which promotes and evaluates professional research activity in Mexico. Its objective is to promote and strengthen the quant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
