Results 61 to 70 of about 1,879 (181)

Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing

open access: yesFish and Fisheries, Volume 26, Issue 3, Page 473-487, May 2025.
ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard threatened species have increasingly focused on retention bans to reduce bycatch mortality. However, the population effects of such measures remain unevaluated across species.
Leonardo Manir Feitosa   +7 more
wiley   +1 more source

Observations on Phallocryptus spinosa (Branchiopoda, Anostraca) populations from the high plateaus of Northeastern Algeria [PDF]

open access: yes, 2015
Phallocryptus spinosa (Thamnocephalidae) is a small primitive crustacean which lives in temporary saline pools of the Palaearctic region called Chott, Sebkha, Garâa or Daya in North Africa. Data on its biology and life history are very scarce despite its

core  

Transgenerational Plasticity of Maternal Hemolymph Trehalose in Aphids

open access: yesArchives of Insect Biochemistry and Physiology, Volume 118, Issue 1, January 2025.
Maternal hemolymph trehalose influences aphid transgenerational plasticity and adaptation to environmental stress. Higher trehalose levels in winged aphids are associated with increased trehalose levels in the offspring, potentially aiding resilience.
Naomi Soma, Shingo Kikuta
wiley   +1 more source

Matrotrophic viviparity constrains microbiome acquisition during gestation in a live‐bearing cockroach, Diploptera punctata

open access: yesEcology and Evolution, 2019
The vertical transmission of microbes from mother to offspring is critical to the survival, development, and health of animals. Invertebrate systems offer unique opportunities to conduct studies on microbiome‐development‐reproduction dynamics since ...
Emily C. Jennings   +3 more
doaj   +1 more source

The brine shrimp Artemia: adapted to critical life conditions

open access: yesFrontiers in Physiology, 2012
The brine shrimp Artemia is a micro-crustacean, well adapted to the harsh conditions that severely hypersaline environments impose on survival and reproduction.
Gonzalo M Gajardo, John A Beardmore
doaj   +1 more source

The whale shark: Is the species endangered or vulnerable? [PDF]

open access: yes, 1989
Notable contributions summarising our knowledge of the known habits of the whale shark in general, and its occurrence in Indian coastal waters have been made by Gudger (1935), Chevey (1936) and Prater (1941).
Silas, E G
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First Report of Calceostoma glandulosum (Monogenea) in Argyrosomus regius: Morphological and Molecular Characterization and Temperature Effects on Life Cycle

open access: yesAquaculture Research, Volume 2025, Issue 1, 2025.
The increase in fish production in aquaculture reflects the growth of the world population. However, this expansion is accompanied by challenges, such as the intensification of production systems through increased stocking density, which induces stress in fish, weakening their immune system and making them more susceptible to disease outbreaks ...
Maria Carolina Ribeiro   +5 more
wiley   +1 more source

Observations on the egg-cases of some ovo-viviparous and viviparous elasmobranchs, with a note on the formation of the elasmobranch egg-case [PDF]

open access: yes, 1951
Egg-cases of a number of oviparous Elasmobranchs have been described from time to time, the oblong egg-capsules of skates and rays being known as `skate barrows,' 'sailors' purses,' 'mermaids' purses,' and 'mermaids' pin-boxes'.
Raghu Prasad, R
core  

Shell Constraints on Evolutionary Body Size–Limb Size Allometry Can Explain Morphological Conservatism in the Turtle Body Plan

open access: yesEcology and Evolution, Volume 14, Issue 11, November 2024.
Turtle body size and limb size scale nearly isometrically along the group's evolution, although major deviations are only seen in highly specialized ecological or morphological groups. The evolution of the shell constrained turtle body proportions, as they show lower rates of variance accumulation in these allometries than other more diverse and ...
Guilherme Hermanson, Serjoscha W. Evers
wiley   +1 more source

Extraembryonic Membranes and Placentation in the Mexican Snake Conopsis lineata

open access: yesJournal of Morphology, Volume 285, Issue 10, October 2024.
This research is mainly focused on the structure of the extraembryonic membranes and placentation of the viviparous snake Conopsis lineata, during the gestation. C. lineata is a lecithotrophic species, eggs/embryos that develop inside the uterus remain enclosed by a thin eggshell membrane with unchanged fibers throughout gestation; and it has five ...
Cecilia de Dios‐Arcos   +1 more
wiley   +1 more source

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