OE damage takes place during the chrysalid stage. While the infected adults do not survive to migrate, they do spread the protozoan parasite. If you see the sign of infection above, keep this butterfly isolated when it emerges.
Thursday, August 31, 2023
Monarch Butterflies and Tropical Milkweed Do's and Do Nots.
Sunday, April 23, 2023
NAMING RIGHTS TO SAGAMARTHA (aka Everest), THE HIGHEST MOUNTAIN IN THE WORLD
Everest never saw the mountain and never visited the area, but the mountain was given a colonial name without the consent of the Nepali people.
Nor was Edmund Hilary the first to climb Sagarmatha.
wiki In November 2020, Nepali politicians claimed China had annexed more than 150 hectares of Nepal land. The Nepali government in September 2021 formed a team
This team submitted its report on 26 September which brought the conclusion of claim being truth. It suggested making a joint force for dispute resolution. In early 2022, a Nepali government report was leaked. The report indicated the previously alleged buildings were on Chinese side, but found that China has built fences, a canal, and a road that encroached on Nepali soil.[20]
Sagarmatha (Everest) borders China and Nepal. From it's highest point, the southern slope in Nepalese, the northern Chinese. This view from the south shows the Nepalese view of Sagarmatha.
Wednesday, February 1, 2023
SEASON 3: MONARCH BUTTERFLY
Friday, Sept. 8 Scott volunteers to take home the most recent chrysalid for release in his neighborhood. Tuesday, August 29 of the vivarium six, 1 caterpillar (A) fatality (tachinid) today. The four remaining larvae are simultaneously briefly and unexpectedly pausing their feeding behavior (all are still). (B) missing one antennae is now 10:39 am) on the netted vivarium "ceiling". Is it ready for it's chrysalid stage? No. It has descended back to the wooden deck. 10:45 am now back to the ceiling. 10:50 now at leaf level. 10:53 now at bottom.
Monday, August 28, 2023 Monarch caterpillar census 10 (five on the deck, six in the vivarium). The 6th, too small to be noticed, maybe 1st or 2nd install, was a milkweed stowaway. Idea: this larva too young to be parasitized? Only 5 seeds sprouted from the 40 tropical milkweed seeds from 2021. From a late start*, caterpillar activity is back in full swing.
*Later start because of wet winter, and/or cooler temperature?
Tuesday July 25, 2023 A. I found a monarch caterpillar today on the soil near the base of a tropical milkweed on the front deck (south long planter.) B. Also, planted (in a 4"X10"tray) 40 seeds originally collected between November and December 2021. C. Milkweed trimmed down to 3inches on the south side of the house have not yet come back. 4 containers of tropical milkweed (on or adjacent to the deck) are growing fast.
Photo Paul Ho
Sunday, July 23 Paul has 20 monarch caterpillars in Zone 3. They are eating milkweed faster than the plants can grow.
See photo -->
How many caterpillars are in this photo?
Friday, June 23, 2023 5th straight day of sunshine. Paul (Zone 3 on the map) reports that his first monarch caterpillar has just gone to chrysalis stage. Let's check where he is on the map. I bet it's warmer in Zone 3.
Tom and Virginia(Zone 2) report they've spotted monarch adults in the last few weeks, but none seen here is South Laguna. Only 1 butterfly sighting (laying eggs) here in Zone 1 but I only found 1 egg.
Wednesday June 21 Third sunny day in a row following 9 weeks without sunshine here in Laguna Beach, which may explain why we haven't seen monarch butterflies as of this date.
Milkweed has sprouted from last seasons trimmed 3 inch stalks. (See Figure 1 below). So there is plenty of food when they arrive.
Almost Season 3.
Wednesday, Feb. 1, 2023 I have trimmed last season's tropical milkweed down to about 3 inches from the ground. This will reduce Monarch butterfly exposure to the fatal disease known as OE Ophryocystis elektroscirria (See Figure 2 below) Click HERE for more.
Spring temperatures are a few weeks away but good news has been published.(See Winter Count below)
WINTER COUNT SHOWS REBOUND FROM NEAR EXTINCTION
2020 Fewer than 2000 butterflies
2021 247,000.
2022 330,000
FIGURE 1. If you haven't topped your tropical milkweed, this is a good time to do it to protect next seasons monarch butterflies from OE. Ophryocystis elektroscirria, a protozoan (single celled) organism infecting monarch, queen and lesser wanderer butterflies that scientists believe evolved alongside monarchs.OE damage takes place during the chrysalid stage. While the infected adults do not survive to migrate, they do spread the protozoan parasite. If you see the sign of infection above, keep this butterfly isolated when it emerges, Place milkweed florets with blossoms to feed the isolated adult.
To control the dangerous spread of Ophryocystis elektroscirrha (OE), a parasite that infects monarch butterflies, I have cut my tropical milkweed plants down to 4 inch stems without leaves. (see photo below)
Wednesday, December 28, 2022
SCIENCE QUESTIONS: #2 WHAT IS THE SPEED OF THE WORLD'S FASTEST BASEBALL?
1. WHAT IS THE ABSOLUTE FASTEST SPEED A BASEBALL HAS EVER REACHED?
2. WHAT WILL IT LOOK LIKE TRAVELING THAT FAST?
3. WHAT WILL IT LOOK LIKE WHEN IT HITS A BAT (OR A THICK STEEL PLATE)?
4. HOW DID THEY DO IT?
ANSWER TO QUESTION #2 (SCRUB TO 18:38)
ANSWER TO QUESTION #4 START VIDEO AT THE BEGINNING
BUT THE FIRST 18 MINUTES ARE HEAVY WITH ENGINEERING AND PHYSICS
HEY, WE MIGHT LEARN SOMETHING!
Monday, November 21, 2022
THE SCENT OF RAIN
Friday, August 5, 2022
SCIENCE QUESTIONS (in reverse chronology)
Our question for today is which method of egg transfer is being used by tachinid flies here in Orange County California? When we find this answer, we'll better be able to increase the chances of survival for local monarch butterflies. This week, I've brought small caterpillars to safety inside just in case tachinid eggs are deposited on older caterpillars. I've also started washing milkweed leaves and seed pods in case tachinid eggs have been left on the milkweed. Next, I'll do research on which egg depositing method is in play at this location.
https://nathistoc.bio.uci.edu/diptera/index.htm#Brachycera
Count five seconds. Sound travels about 1 mile in 5 seconds.
Monday, August 1, 2022
PARASITES, PARISITOIDS, AND MONARCH BUTTERFLIES
Monarch butterflies are facing extinction. The cause might just be a Tachinid, a beneficial fly (beneficial to agriculture) but not to Monarch butterflies. See video clips 1 & 2.
"In some species, eggs are deposited on foliage near the host insect, and the maggots are ingested during feeding by the host after they hatch. In other species, the adult fly glues eggs to the body of the host, and the maggots penetrate into the host's body after the eggs hatch. Some female tachinids possess a piercing ovipositor and insert their eggs into the host body. In all cases, tachinid maggots feed internally in their hosts and exit the host body to pupate." --From University of California Agriculture and Natural Resources.
The following four photos are to aid in the identification of the tachinid fly parasite in our South Laguna Beach study.
"A study looking at the rates of parasitization by the most common tachinid parasitoid of Monarchs, Lespesia archippivora, showed that about 13% of wild Monarch caterpillars contained these parasitoids!" --Matthew L. Gimmel, Ph.D. Santa Barbara Museum of Natural History
So how do Tachinid eggs get onto and into a Monarch caterpillar?
James E. O'Hara http://www.nadsdiptera.org/Tach/AboutTachs/TachOverview.html
"The ancestral mode of host finding in Tachinidae likely involved a series of cues, olfactory and visual, that guided a searching female to the right microhabitat and host plant and then to an exposed host, where perhaps tactile stimuli initiated oviposition behavior. This method of host location is still common, but there are many sophisticated behaviors that have evolved to aid the searching tachinid. For example, oviposition in numerous tachinids does not involve the visual sighting of a host. In the case of Goniini, microtype eggs are deposited on the food plant of a host, usually in response to plant volatiles released at the site of feeding damage, and the eggs do not hatch until ingested by a host."
"Tachinid flies and other parasitoids exert selection pressures on their hosts to evolve ways in which to minimize parasitism. The more obvious may involve the evolution of cryptic coloration, specialized feeding strategies such as concealed feeding or feeding at night, or evasive maneuvers that are evoked when a host is attacked. Less obvious, but quite important at the community level, are the effects of tachinid parasitism on host and host-plant interactions (i.e., tritrophic interactions). Insect herbivores do not always feed preferentially on plant species that provide the highest nutrition. Certain insect herbivores will feed on less preferred host plants if such feeding reduces their level of mortality due to parasitism. The investigation of enemy-free space as an important component of tritrophic interactions is an active area of research."
Click HERE for the entire O'Hara article.
Flight of the Bumblebee
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Over the last five years I've not had much success with native milkweed to feed hungry monarch caterpillars. So, under close management ...
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Tide Chart Click HERE. or HERE for a Tide Graph Southern California Beaches November 10, 2023 Friday 9:15am Spotted 4 unhurried dol...
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Source: journeynorth.org Source: journeynorth.org Sunday, September 24 Today a female monarch butterfly is on the dockside tropical milkw...
















