Results 91 to 100 of about 58,795 (312)

Neglected Biodiversity of Fish Assemblages Associated With Antipatharia (Black Corals) on Tropical Shallow Reef Ecosystems

open access: yesEcology and Evolution
Addressing anthropogenic threats compromising the persistence of tropical marine ecosystems requires a comprehensive understanding of the fundamental ecological functions organisms fulfill in these realms.
Erika Gress   +3 more
doaj   +1 more source

Informe de la Comisión Interamericana del Atún Tropical correspondiente al año 1999 [PDF]

open access: yes, 2001
ENGLISH: The Inter-American Tropical Tuna Commission (IATTC) operates under the authority and direction of a convention originally entered into by Costa Rica and the United States.

core  

Hepatic morphology and serum biochemical profile according to dry and rainy seasons in Pygocentrus nattereri (Characiformes: Serrasalmidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract This study investigated the physiological and morphological adaptations of the liver of the carnivorous fish Pygocentrus nattereri (piranha) in response to seasonal variations (dry and rainy seasons) in the Brazilian Pantanal. The objective was to describe how the liver, a central organ in metabolic regulation, responds to environmental ...
Maria Eduarda Corona Garcia   +9 more
wiley   +1 more source

Morfología de las especies de Hyphessobrycon (Characiformes: Characidae), grupo heterorhabdus, en Colombia

open access: yesRevista de Biología Tropical, 2011
El género Hyphessobrycon incluye dieciocho especies reportadas para Colombia de las cuales 13 son miembros del grupo heterorhabdus; con las mismas, se realizó un análisis morfogeométrico por medio del Método de Cerchas (Box Truss) y Láminas Delgadas (TPS)
Carlos A. García-Alzate   +4 more
doaj  

Informe de la Comisión Interamericana del Atún Tropical correspondiente al año 1998 [PDF]

open access: yes, 2000
ENGLISH: The Inter-American Tropical Tuna Commission (IATTC) operates under the authority and direction of a convention originally entered into by Costa Rica and the United States.

core  

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

open access: yesThe Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti   +2 more
wiley   +1 more source

Diversity across organisational scale emerges through dispersal ability and speciation dynamics in tropical fish. [PDF]

open access: yesBMC Biol, 2023
Keggin T   +6 more
europepmc   +1 more source

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

open access: yesThe Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox   +8 more
wiley   +1 more source

Morfogeometría de los peces del género Hyphessobrycon (Characiformes: Characidae), grupo heterorhabdus, en Venezuela

open access: yesRevista de Biología Tropical, 2010
El género Hyphessobrycon es uno de los más numerosos y morfológicamente complejos de la familia Characidae, incluye 122 especies válidas, de las cuales 17 están en Venezuela.
Carlos A García-Alzate   +2 more
doaj  

Assessing factors affecting smallholder earthen pond fish farming in the varied climates of the Rwenzori Region, Uganda

open access: yesAquaculture Reports
The impact of climatic variations on the aquaculture yield of tropical mountainous regions is an understudied phenomenon. These regions are subdivided into microclimatic zones that range from polar to tropical climate types.
Athanasius Ssekyanzi   +3 more
doaj   +1 more source

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