Embryonic development time of the freshwater mysid Limnomysis benedeni Czerniavsky as a function of water temperature

Abstract

The numbers of alien species in freshwater systems and their detrimental impacts on the stability of ecosystems and global species diversity are increasing. To predict and assess such impacts, a thorough knowledge of the autecology and life cycle of the alien species is required. Limnomysis benedeni is common and one of the most invasive mysids in Europe. Here we show a clear dependency of the development time of the brood of L. benedeni on water temperature. In laboratory experiments (one in spring 2008 and two in 2009, in spring and summer) under controlled conditions, we determined embryonic development times and the probability of survival of the females and juveniles at water temperatures ranging from 4 to 25°C. At 6.5 and 25°C, the probability of survival of both the females and the larvae was lower than at 10, 15, or 20°C. Since the development time is one of the key characteristics of the life cycle and is therefore necessary to calculate, for example, birth and mortality rates, we determined an equation for the development time as a function of the water temperature. This information will be useful to understand the distribution potential of this invasive species.

Temperature-dependent development and survival of an invasive genotype of wheat curl mite, Aceria tosichella

“…Ergo, whereas warmer regions foster more generations of WCM than cooler regions, it can be postulated that there is great potential for increased WCM pest status in regions where temperatures would rise from cool to moderate levels. Increased pest status under warming climates has also been predicted for other ectothermic pest species (Pulatov et al 2016;Gu et al 2018;Iwamura et al 2020) and the data presented here add to these global concerns.…”

Dual‐tracer‐based isotope turnover rates in a highly invasive mysid Limnomysis benedeni from Lake Constance

“…Before SIA on tissues of experimental animals, mysids were kept overnight in filtered lake water over gauze screens to allow gut clearance. All experiments were conducted from 19th October to the 2nd November (2013), using only sexually matured adults of the winter generation, that are unlikely to invest neither in increasing body size nor in reproduction (Hanselmann et al., , ). SIA was conducted on replicate samples consisting of single individuals monitored over 2 weeks.…”

“…Using a laboratory‐based dual stable isotope tracer approach (Na 15 NO 3 and NaH 13 CO 3 ), we tested how the stable isotope values adult individual L. benedeni shift over a 2‐week period when exposed to a new isotopic environment. In addition to the effect this invader species could exert on benthos, biofilm communities, and small pelagic bioseston and abioseston (such as plankton, nekton, and detritus), it represents a suitable food resource for higher trophic consumers, such as fish (Hanselmann, Gergs, & Rothhaupt, , ).…”

Niche differentiation between sympatric alien aquatic crustaceans: An isotopic evidence

“…Feeding niche differentiation can minimize interspecific competition and lead to a relatively higher species richness. In some specific locations of Lake Constance, K. warpachowskyi is estimated to comprise up to 40% of the mysid population (Hanselmann et al 2011a(Hanselmann et al , 2011b. Feeding niche differentiation may be one factor enabling this mysid to outcompete other species.…”

“…Their migration into Western Europe is likely to have taken place via the river systems of the Main-Danube Canal and the River Rhine (Bij De Vaate, Jazdzewski, Ketelaars, Gollasch, & Van Der Velde 2002). Previous studies on the feeding ecology and lifehistory of L. benedeni show that it resides on coarse rocky structures and macrophytes (Gergs, Hanselmann, Eisele, & Rothhaupt 2008) and filters or grazes on small particles of benthic and pelagic origin (Hanselmann, Gergs, & Rothhaupt 2011a, 2011bHanselmann, Hodapp, & Rothhaupt 2013). In a recently established population in North-Western Germany, L. benedeni was shown to utilize pelagic carbon sources with omnivorous feeding characteristics (Fink & Harrod 2013).…”