Results 131 to 140 of about 19,656 (270)

Host specificity and host stage preference of Psyllaephagus species (Hymenoptera: Encyrtidae) towards invasive eucalypt psyllids (Hemiptera: Aphalaridae)

open access: yesAgricultural and Forest Entomology, EarlyView.
Abstract Invasive eucalypt psyllids pose a threat to the long‐term production of eucalypts worldwide. In order to reduce their economic impact, classical biological control using Psyllaephagus species has been used successfully. The objectives of this study were to determine the host specificity and host stage preference of Psyllaephagus blastopsyllae,
Privilege T. Makunde   +3 more
wiley   +1 more source

Periparturient mortality in merino ewes in Australia: Incidence, impact and the path to mitigation strategies

open access: yesAustralian Veterinary Journal, Volume 103, Issue 5, Page 287-297, May 2025.
Managing breeding ewe mortality is a priority for the Australian sheep industry. The periparturient period carries the highest risk of mortality, but the incidence and causes in Merino ewes are not well characterised. Here, we outline the reported incidence of annual and periparturient mortality for Australian Merino ewes, causes and risk factors for ...
B Kirk   +11 more
wiley   +1 more source

Establishing updated haematological and biochemical reference intervals for urban brushtail possums (Trichosurus vulpecula) in Australia

open access: yesAustralian Veterinary Journal, EarlyView.
Reference intervals (RIs) or reference ranges are crucial tools in clinical practice and research, aiding in the interpretation of laboratory test results by providing values expected in a healthy population. This paper provides haematology and biochemistry reference intervals and ranges established from a population of urban brushtail possums ...
C Marschner   +3 more
wiley   +1 more source

Causes of mortality in koalas autopsied at the University of Melbourne

open access: yesAustralian Veterinary Journal, EarlyView.
Objective To determine the causes of mortality in koalas autopsied at the University of Melbourne based on the retrospective analysis of autopsy reports. Methods The autopsy reports of 239 koalas examined at the University of Melbourne from 1970 to 2023 were reviewed to determine which of the comorbidities present was the primary cause to which death ...
L Wilson   +8 more
wiley   +1 more source

Efecto del parasitismo del isópodo bopírido Ionella agassizi (Isopoda: Epicaridea) (Bornnier, 1900) sobre la fisiología nutricional del nape Neotrypaea uncinata (M. Edwards, 1837) (Decapoda: Thalassinidea) Effects of parasitism in nutritional physiology of the ghost shrimp Neotrypaea uncinata parasitized by the isopod Ionella agassizi

open access: yesRevista Chilena de Historia Natural, 2000
El nape Neotrypaea uncinata se encuentra parasitado en sus branquias por el isópodo Ionella agassizi. Trabajos anteriores han señalado que I. agassizi provoca un efecto negativo en la biología reproductiva del nape, afectando significativamente tanto el ...
Lorena P. Astete-Espinoza   +1 more
doaj  

In Vitro and In Vivo Effect of Amitraz on Honey Bee Drone Sperm Quality

open access: yesActa Zoologica, EarlyView.
ABSTRACT Honey bee hive infestation by the ectoparasitic mite, Varroa destructor, has been a major cause of declining populations. Treating such infestations is important for sustainability. Knowledge about the sub‐lethal effects of commonly used acaricides on drone reproductive health, particularly sperm quality, is limited. The effect of in vitro and
Janice Faith Murray   +3 more
wiley   +1 more source

Relevance of state–behaviour feedbacks for animal welfare

open access: yesBiological Reviews, EarlyView.
ABSTRACT An animal's behaviour and its state, including its health and affective state, are dynamic and tightly coupled, influencing each other over time. Although both are relevant to the animal's welfare, there has been limited research on their dynamics in welfare studies. Here we aim to: (i) review evidence for feedbacks between state and behaviour
Camille M. Montalcini   +2 more
wiley   +1 more source

The evolution of reproduction in Ediacaran–Cambrian metazoans

open access: yesBiological Reviews, EarlyView.
ABSTRACT The evolution of reproductive style is a fundamental aspect of metazoan life history but has not been explored holistically through the Ediacaran–Cambrian rise of metazoans. Recent molecular clock analyses based on only unequivocal metazoan fossil calibrations suggest that Porifera were present by at least 590 million years ago (Ma), all major
Rachel A. Wood, Mary L. Droser
wiley   +1 more source

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